EBDW020A0B_技术文档

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Features

RoHS Compliant

.

Compliant to RoHS II EU “Directive 2011/65/EU (-Z versions)

Compliant to REACH Directive (EC) No 1907/2006

Compatible with reflow pin/paste soldering process

High and flat efficiency profile >95.4% at 12V_dc, 55% to 90%

rated output

.

Wide input voltage range: 36-75V_dc

Delivers up to 20A_dcoutput current

Remote sense and output voltage trim

Fully very tightly regulated output voltage

Output voltage adjust (via PMBus): 5.0V_dcto 13.2V_dc

Low output ripple and noise

No reverse current during prebias start-up or shut-down

Industry standard, DOSA compliant Eighth brick:

58.4 mm x 22.8 mm x 11.3 mm

Applications

.

Distributed power architectures

Intermediate bus voltage applications

Servers and storage applications

(2.30 in x 0.90 in x 0.44 in)

.

Constant switching frequency

Positive remote On/Off logic

Networking equipment including Power over Ethernet

(PoE)

Output over current/voltage protection

Digital interface with PMBus™ Rev.1.2 compliance^

Over temperature protection

.

Fan assemblies other systems requiring a tightly

regulated output voltage

Wide operating temperature range (-40°C to 85°C)

Options

CAN/CSA† C22.2 No. 60950-1-07, 2nd Edition + A1:2011

(MOD), ANSI/UL*60950-1-2011, IEC 60950-1 (2nd edition);

am1, and VDE‡ (EN60950-1, 2nd Ed.) Licensed

CE mark 2006/96/EC directives^§

.

Negative Remote On/Off logic (1=option code, factory

preferred)

.

Auto-restart after fault shutdown (4=option code, factory

preferred)

Meets the voltage and current requirements for ETSI 300-

132-2 and complies with and licensed for Basic insulation

rating per EN60950-1

2250 Vdc Isolation tested in compliance with IEEE 802.3^¤PoE

standards

.

Base plate option (-H=option code)

Passive Droop Load Sharing (-P=option code)

.

ISO** 9001 and ISO14001 certified manufacturing facilities

Description

The EBDW020A0B Barracuda™ series of dc-dc converters are a new generation of DC/DC power modules designed to support 9.6

-12V_dcintermediate bus applications where multiple low voltages are subsequently generated using point of load (POL) converters,

as well as other application requiring a tightly regulated output voltage. The EBDW020A0B series operate from an input voltage

range of 36 to 75V_dc, and provide up to 20A output current at output voltages from 5.0V_dcto 12.0V_dc, and 240W output power from

output voltages of 12.1V_dcto 13.2V_dcin a DOSA standard eighth brick. The converter incorporates digital control, synchronous

rectification technology, a fully regulated control topology and innovative packaging techniques to achieve efficiency reaching

95.4% peak at 12V_dcoutput. This leads to lower power dissipations such that for many applications a heat sink is not required.

Standard features include output voltage trim, remote sense, on/off control, output overcurrent and over voltage protection, over

temperature protection, input under and over voltage lockout, power good signal and PMBus interface.

The output is fully isolated from the input, allowing versatile polarity configurations and grounding connections. Built-in filtering for

both input and output minimizes the need for external filtering.

^

*

†

‡

§

¤

PMBus name and logo are registered trademarks of SMIF, Inc.

UL is a registered trademark of Underwriters Laboratories, Inc.

CSA is a registered trademark of Canadian Standards Association.

VDE is a trademark of Verband Deutscher Elektrotechniker e.V.

This product is intended for integration into end-user equipment . All of the required procedures of end-use equipment should be followed.

IEEE and 802 are registered trademarks of the Institute of Electrical and Electronics Engineers, Incorporated.

** ISO is a registered trademark of the International Organization of Standards.

April 15, 2013

Page 1

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings

only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations

sections of the Data Sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability.

Parameter

Device

Symbol

Min

Max

Unit

Input Voltage*

Continuous

V_IN

-0.3

75

V_dc

Operating transient ≤ 100mS

100

Operating Input transient slew rate, 50V_INto 75V_IN

(Output may exceed regulation limits, no protective

-

10

V/µs

shutdowns shall activate, C_O=220μF to C_{O, max}

)

Non- operating continuous

V_IN

T_A

80

100

85

V_dc

°C

Operating Ambient Temperature

(See Thermal Considerations section)

Logic Pin Voltage (to SIG_GND or V_O(-))

All

-40

V_pin

-0.3

3.6

V_dc

TRIM/C1, C2, ADDR0, ADDR1, CLK, DATA, SMBALERT

Storage Temperature

All

T_stg

-55

125

°C

I/O Isolation Voltage (100% factory Hi-Pot tested)

2250

V_dc



* Input over voltage protection will shutdown the output voltage when the input voltage exceeds threshold level.

Electrical Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.

Parameter

Device

Symbol

Min

Typ

Max

Unit

Operating Input Voltage

Maximum Input Current

V_IN

36

48

75

V_dc

I_IN,max

-

7

A_dc

(V_IN=0V to 75V, I_O=I_{O, max}

)

Input No Load Current

All

I_{IN,No load}

50

mA

(V_IN= V_{IN, nom}, I_O= 0, module enabled)

Input Stand-by Current

I_IN,stand-by

25

mA

(V_IN= V_{IN, nom}, module disabled)

External Input Capacitance

All

C_IN

I²t

100

-

μF

Inrush Transient

1

A²s

Input Terminal Ripple Current

(Measured at module input pin with maximum specified input

capacitance and ൏ 500uH inductance between voltage source

and input capacitance C_IN=220uF, 5Hz to 20MHz, V_IN= 48V, I_O=

All

-

900

-

mA_rms

I_Omax

)

Input Reflected Ripple Current, peak-to-peak

(5Hz to 20MHz, 12μH source impedance; V_IN= 48V, I_O= I_Omax; see

Figure 11)

All

-

24

50

-

mA_p-p

dB

Input Ripple Rejection (120Hz)

CAUTION: This power module is not internally fused. An input line fuse must always be used.

This power module can be used in a wide variety of applications, ranging from simple standalone operation to an integrated part

of sophisticated power architecture. To preserve maximum flexibility, internal fusing is not included, however, to achieve maximum

safety and system protection, always use an input line fuse. The safety agencies require a fast-acting fuse with a maximum rating

of 15 A (see Safety Considerations section). Based on the information provided in this Data Sheet on inrush energy and maximum

dc input current, the same type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s Data Sheet for further

information.

April 15, 2013

Page 2

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Electrical Specifications (continued)

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.

Parameter

Device

Symbol

Min

Typ

Max

Unit

Output Voltage Set-point (Default)

(V_IN=V_IN,nom, I_O=10A, T_A=25°C)

(Adjustable via PMBus)

All

V_{O, set}

11.97

12.00

12.03

V_dc

Output Voltage Variation from Default

(Over all operating input voltage (40V to 75V), resistive load, and

temperature conditions until end of life)

All w/o -P

V_O

11.76

12.24

V_dc



-P Option

All

V_O

11.63

10.8

12.37

V_dc



Output Voltage (V_IN=36V, T_A= 25ºC)

Output Regulation [V_{IN, min}= 40V]



Line (V_IN=V_{IN, min}to V_{IN, max}

Load (I_O=I_{O, min}to I_{O, max}

Line (V_IN=V_{IN, min}to V_{IN, max}

)

All w/o -P

-P Option

All

0.2

0.5

0.50

2

% V_{O, set}



)

% V_{O, set}

)

Load (I_O=I_{O, min}to I_{O, max}), Intentional Droop

Temperature (T_A= -40ºC to +85ºC)

V_dc

% V_{O, set}



Output Ripple and Noise on nominal output

(V_IN=V_{IN, nom}and I_O=I_{O, min}to I_{O, max}

)

RMS (5Hz to 20MHz bandwidth)

All

70

mV_rms



Peak-to-Peak (5Hz to 20MHz bandwidth)

200

mV_pk-pk

All w/o -02

All w -02

C_OUT

220

220¹

10,000

μF

External Output Capacitance



Output Current

All

I_O

0

20

A_dc

VOUT_OC_FAULT_LIMIT (Default)

(Adjustable via PMBus)

All w/o -02

All w -02

I_O,lim

23

28

A_dc



Efficiency (V_IN=V_{IN, nom}, V_O= V_O,set, T_A=25°C)

I_O= 100% I_{O, max}

All

η

95.2

95.4

%

I_O= 55% - 90% I_{O, max}

Switching Frequency (primary MOSFETs)

(Output Ripple 2X switching frequency)

Dynamic Load Response

f_sw

150

kHz

(dI_O/d_t=1A/10s; V_in=V_in,_nom; T_A=25°C; tested with a 10μF

ceramic and 1 x 470μF polymer capacitor across the load.)

Load Change from I_O= 50% to 75% of I_O,max

Peak Deviation

Settling Time (V_O<10% peak deviation)

:

All w/o -

02

__

mV_pk

s

V_pk

t_s

750

800

Load Change from I_O= 75% to 50% of I_O,max

Peak Deviation

Settling Time (V_O<10% peak deviation)

:

All w/o -

02

__

mV_pk

s

V_pk

t_s

750

800

(dI_O/d_t=1A/10s; V_in=V_in,_nom; T_A=25°C; tested with a 10μF

ceramic and 1 x 220μF polymer capacitor across the load.)

Load Change from I_O= 50% to 75% of I_O,max

Peak Deviation

Settling Time (V_O<10% peak deviation)

:

__

mV_pk

s

All w -02

V_pk

t_s

300

700

Load Change from I_O= 75% to 50% of I_O,max

Peak Deviation

:

__

mV_pk

s

V_pk

t_s

300

700

Settling Time (V_O<10% peak deviation)

Note (1): Polymer capacitors required.

Isolation Specifications

Parameter

Symbol

C_iso

Min



Typ

1000



Max



Unit

pF

Isolation Capacitance

Isolation Resistance

R_iso

10

MΩ



April 15, 2013

Page 3

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Feature Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See

Feature Descriptions for additional information.

Parameter

Device

Symbol

Min

Typ

Max

Unit

Remote On/Off Signal Interface

(V_IN=V_{IN, min}to V_{IN, max}, Signal referenced to V_IN-terminal)

Negative Logic: device code suffix “1”

Logic Low = module On, Logic High = module Off

Positive Logic: No device code suffix required

Logic Low = module Off, Logic High = module On

On/Off Thresholds:

Remote On/Off Current – Logic Low (Vin =100V)

Logic Low Voltage

Logic High Voltage – (Typ = Open Collector)

All

I_on/off

V_on/off

280

-0.3

2.0

310

0.8

14.5

μA

V_dc



Logic High maximum allowable leakage current

(V_on/off= 2.0V)

All

I_on/off

10

μA



Maximum voltage allowed on On/Off pin

V_on/off

14.5

V_dc

TON_DELAY and TON_RISE (I_O=I_{O, max}

)

(Adjustable via PMBus)

All w/o -P T_{delay, Enable with Vin}

160

40

ms



T_delay=Time until V_O= 10% of V_O,setfrom either application of Vin

with Remote On/Off set to On (Enable with Vin); or operation of

Remote On/Off from Off to On with Vin already applied for at

least 150 milli-seconds (Enable with on/off).

T_{delay, Enable with}

All w/o-P

on/off

w/ -P

T_delay

,

180*

40*

ms

Enable with Vin



* Increased T_delaydue to startup for parallel modules.

T_{delay, Enable with}

on/off

T_rise=Time for V_Oto rise from 10% to 90% of V_O,set, For C_O

All w/o -P

w/ -P

T_rise

40

>5000uF, I_Omust be < 50% I_{O, max}during T_rise

.

* Increased T_risewhen Vo exists at startup for parallel

modules.

300*

Load Sharing Current Balance

(difference in output current across all modules with outputs in

parallel, no load to full load)

-P Option

I_diff

3

A

Remote Sense Range

All

V_Sense

V_{O, set}

0.5

V_dc



External Resistor Trim Range

6.0

13.2

VOUT_COMMAND

All

V_{O, set}

V_O,limit

5.0

13.2

V_dc

(Adjustable via PMBus)

VOUT_OV_FAULT_LIMIT

(Adjustable via PMBus)

15

OT_FAULT_LIMIT

(Adjustable via PMBus)

All

T_ref

140

°C



Input Undervoltage Lockout

(Adjustable via PMBus)

VIN_ON

VIN_OFF

34

32

35

33.5

36

34.5

V_dc

Input Overvoltage Lockout

(Adjustable via PMBus)

Turn-off Threshold [VIN_OV_FAULT_LIMIT]

Turn-on Threshold

(follows VIN_OV_FAULT_LIMIT -7V)

85

79

V_dc



Pull down resistance of Power Good pin

All

150

15

ꢀ

Sink current capability into Power Good pin (V_PG=2.2V)

mA

April 15, 2013

Page 4

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

General Specifications

Parameter

Device

All

Symbol

Typ

Unit

Calculated Reliability Based upon Telcordia SR-332 Issue

2: Method I, Case 3, (I_O=80%I_{O, max}, T_A=40°C, Airflow = 200

LFM), 90% confidence

MTBF

4,169,213

Hours

FIT

239.9

10⁹/Hours

Weight – Open Frame

30.0 (1.06)

39.5 (1.39)

g (oz.)

Weight – with Base plate option

g (oz.)

Digital Interface Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See

Feature Descriptions for additional information.

Parameter

Conditions

Symbol

Min

Typ

Max

Unit

PMBus Signal Interface Characteristics

Input High Voltage (CLK, DATA)

VIH

VIL

I_IH

2.1

3.6

0.8

10

V

Input Low Voltage (CLK, DATA)

Input high level current (CLK, DATA)

Input low level current (CLK, DATA)

Output Low Voltage (CLK, DATA, SMBALERT#)

-10

μA

V

I_IL

10

I_OUT=2mA

V_OUT=3.6V

VOL

0.4

Output high level open drain leakage current (DATA,

SMBALERT#)

I_OH

C_O

0

10

μA

Pin capacitance

0.7

pF

PMBus Operating frequency range

(* 5-10 kHz to accommodate hosts not supporting clock

stretching)

Slave Mode

FPMB

5*

400

kHz

Measurement System Characteristics

Output current reading range

I_OUT(RNG)

I_OUT(RES)

I_OUT(ACC)

0.56

63.9375

A

Output current reading resolution

Output current reading accuracy

0.19

5A < Iout <20A

-5.0

-1.4

0

4.0

2.7

%

Output current reading accuracy (absolute difference

between actual and reported values)

0.56A < Iout <5A

I_OUT(ACC)

A

V_OUTreading range

V_OUT(RNG)

V_OUT(RES)

V_OUT(ACC)

V_IN(RNG)

V_IN(RES)

V_IN(ACC)

T_(RES)

15.9997

V

mV

%

V_OUTreading resolution

V_OUTreading accuracy

V_INreading range

0.244

0.6

-2.0

0

2.0

127.875

V

V_INreading resolution

V_INreading accuracy

125

0.8

mV

%

-4.0

-5.0

4.0

5.0

Temperature reading resolution

Temperature reading accuracy

0.25

°C

%

T_(ACC)

April 15, 2013

Page 5

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Characteristic Curves

The following figures provide typical characteristics for the EBDW020A0B (12V, 20A) at 25ºC. The figures are identical for either

positive or negative Remote On/Off logic.

INPUT VOLTAGE, V_O(V)

Figure 1. Typical Input Characteristic at Room Temperature.

OUTPUT CURRENT, I_O(A)

Figure 2. Typical Converter Efficiency Vs. Output current at

Room Temperature.

TIME, t (20 ms/div)

TIME, t (40 ms/div)

Figure 3. Typical Start-Up Using Remote On/Off with Vin

applied, negative logic version shown.

Figure 4. Typical Start-Up Using Vin with Remote On/Off

enabled, negative logic version shown.

TIME, t (1 ms/div)

Figure 5. Typical Transient Response to Step Change in Load

Figure 6. Typical Transient Response to Step Change in Load

from 25% to 50% to 25% of Full Load at 48Vdc Input and C_O= from 50% to 75% to 50% of Full Load at 48Vdc Input and

470uF Polymer, without -02 option.

C_O= 470uF Polymer, without -02 option.

April 15, 2013

Page 6

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Characteristic Curves (continued)

The following figures provide typical characteristics for the EBDW020A0B (12V, 20A) at 25ºC. The figures are identical for either

positive or negative Remote On/Off logic.

INPUT VOLTAGE, V_in(V)

Figure 7. Typical Output Voltage Regulation vs. Input

Voltage at Room Temperature.

Figure 8. Typical Output Voltage Regulation vs. Input Voltage

for the –P Version at Room Temperature.

36 Vin

48 Vin

75 Vin

OUTPUT CURRENT, I_O(A)

TIME, t (2s/div)

Figure 9. Typical Output Voltage Regulation vs. Output

Current for the –P Version at Room Temperature.

Figure 10. Typical Output Ripple and Noise at Room

Temperature I_o= I_o,maxand and C_OMin

.

Figure 11. Typical Transient Response to Step Change in

Load from 25% to 50% to 25% of Full Load at 48Vdc Input

and C_O= 220uF Polymer, with -02 option.

Figure 12. Typical Transient Response to Step Change in

Load from 50% to 75% to 50% of Full Load at 48Vdc Input

and C_O= 220uF Polymer, with -02 option.

April 15, 2013

Page 7

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Test Configurations

Design Considerations

Input Source Impedance

The power module should be connected to a low

ac-impedance source. A highly inductive source impedance

can affect the stability of the power module. For the test

configuration in Figure 13, a 100μF electrolytic capacitor, C_in,

(ESR<0.7 at 100kHz), mounted close to the power module

helps ensure the stability of the unit. If the module is subjected

to rapid on/off cycles, a 330μF input capacitor is required.

Consult the factory for further application guidelines.

Safety Considerations

Note: Measure input reflected-ripple current with a simulated

source inductance (LTEST) of 12 µH. Capacitor CS offsets

For safety-agency approval of the system in which the power

module is used, the power module must be installed in

compliance with the spacing and separation requirements of

the end-use safety agency standard, i.e., UL60950-1 2^ndEd.,

CSA C22.2 No. 60950-1 2^ndEd., and VDE0805-1 EN60950-1 2^nd

Ed.

possible battery impedance. Measure current as shown above.

Figure 13. Input Reflected Ripple Current Test Setup.

If the input source is non-SELV (ELV or a hazardous voltage

greater than 60 Vdc and less than or equal to 75Vdc), for the

module’s output to be considered as meeting the

requirements for safety extra-low voltage (SELV), all of the

following must be true:

.

The input source is to be provided with reinforced

insulation from any other hazardous voltages, including

the ac mains.

.

One V_INpin and one V_OUTpin are to be grounded, or both

the input and output pins are to be kept floating.

Note: Use a 1.0 µF ceramic capacitor and a 10 µF aluminum or

tantalum capacitor. Scope measurement should be made

using a BNC socket. Position the load between

.

The input pins of the module are not operator accessible.

Another SELV reliability test is conducted on the whole

system (combination of supply source and subject

module), as required by the safety agencies, to verify that

under a single fault, hazardous voltages do not appear at

the module’s output.

51 mm and 76 mm (2 in. and 3 in.) from the module.

Figure 14. Output Ripple and Noise Test Setup.

Note: Do not ground either of the input pins of the module

without grounding one of the output pins. This may

allow a non-SELV voltage to appear between the

output pins and ground.

CONTACT AND

DISTRIBUTION LOSSES

VO1

VI(+)

IO

II

The power module has safety extra-low voltage (SELV) outputs

when all inputs are SELV.

LOAD

SUPPLY

The input to these units is to be provided with a maximum 15 A

fast-acting (or time-delay) fuse in the unearthed lead.

V

I

(–)

VO2

CONTACT

RESISTANCE

The power module has internally generated voltages

exceeding safety extra-low voltage. Consideration should be

taken to restrict operator accessibility.

Note: All measurements are taken at the module terminals. When

socketing, place Kelvin connections at module terminals to avoid

measurement errors due to socket contact resistance.

Figure 15. Output Voltage and Efficiency Test Setup.

April 15, 2013

Page 8

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

The EBDW020A0B module contains circuitry to detect and

respond to input overvoltage conditions. If the overvoltage

Feature Descriptions

Overcurrent Protection

condition causes the input voltage to rise above the limit in the

Specifications Table, the module will shut down. The module is

factory default configured for auto-restart operation. The

auto-restart feature continually monitors the input voltage and

will restart the module when the level falls 7V below the

VIN_OV_FAULT level.

To provide protection in a fault output overload condition, the

EBDW020A0B module is equipped with internal current-

limiting circuitry and can endure current limiting continuously.

If the overcurrent condition causes the output voltage to fall

below 4.0V, the module will shut down. The module is factory

default configured for auto-restart operation. The auto-restart

feature continually attempts to restore the operation until fault

condition is cleared. If the output overload condition still exists

when the module restarts, it will shut down again. This

operation will continue indefinitely until the overcurrent

condition is corrected.

The IOUT_OC_WARN threshold level, IOUT_OC_FAULT

threshold level, and IOUT_OC_FAULT_RESPONSE can be

reconfigured via the PMBus interface. If the FAULT_RESPONSE

is reconfigured to remain latched off following an overcurrent

shutdown, the overcurrent latch is reset by either cycling the

input power, or by toggling the on/off pin for one millisecond.

The VIN_OV_FAULT threshold level can be reconfigured via the

PMBus interface.

Remote On/Off (i)

The module contains a standard on/off control circuit

reference to the V_IN(-) terminal. Two factory configured remote

on/off logic options are available. Positive logic remote on/off

turns the module on during a logic-high voltage on the

ON/OFF pin, and off during a logic LO. Negative logic remote

on/off turns the module off during a logic HI, and on during a

logic LO. Negative logic, device code suffix "1," is the factory-

preferred configuration. The On/Off circuit is powered from an

internal bias supply, derived from the input voltage terminals.

To turn the power module on and off, the user must supply a

switch to control the voltage between the On/Off terminal and

the V_IN(-) terminal (V_on/off). The switch can be an open collector

or equivalent (see Figure 16). A logic LO is V_on/off= -0.3V to 0.8V.

The typical I_on/offduring a logic LO (Vin=48V, On/Off

Output Overvoltage Protection

The module contains circuitry to detect and respond to output

overvoltage conditions. If the overvoltage condition causes the

output voltage to rise above the limit in the Specifications

Table, the module will shut down. The EBDW020A0B module is

factory default configured for auto-restart operation. The

auto-restart feature continually attempts to restore the

operation until fault condition is cleared. If the output

overvoltage condition still exists when the module restarts, it

will shut down again. This operation will continue indefinitely

until the overvoltage condition is corrected.

Terminal=0.3V) is 147µA. The switch should maintain a logic-

low voltage while sinking 310µA. During a logic HI, the

maximum V_on/offgenerated by the power module is 8.2V. The

maximum allowable leakage current of the switch at V_on/off

=

2.0V is 10µA. If using an external voltage source, the maximum

voltage V_on/offon the pin is 14.5V with respect to the V_IN(-)

terminal.

The VOUT_OV_FAULT threshold level and VOUT_OV_FAULT

_RESPONSE can be reconfigured via the PMBus interface. If the

FAULT _RESPONSE is reconfigured to remain latched off

following an overvoltage shutdown, the overvoltage latch is

reset by either cycling the input power, or by toggling the

on/off pin for one millisecond.

If not using the remote on/off feature, perform one of the

following to turn the unit on:

For negative logic, short ON/OFF pin to V_IN(-).

For positive logic: leave ON/OFF pin open.

Overtemperature Protection

The modules feature an overtemperature protection circuit to

safeguard against thermal damage. The circuit shuts down the

module when the default maximum device reference

temperature is exceeded. The module is factory default

configured to automatically restart once the reference

temperature cools by ~25°C.

The OT_WARNING and OT_FAULT threshold levels and

OT_FAULT_RESPONSE can be reconfigured via the PMBus

interface. If the FAULT_RESPONSE is reconfigured to remain

latched off following an overtemperature shutdown, the

overtemperature latch is reset by either cycling the input

power or by toggling the on/off pin for one millisecond.

Figure 16. Remote On/Off Implementation.

Input Under Voltage Lockout

When Vin exceeds VIN_ON, the module output is enabled,

when Vin falls below VIN_OFF, the module output is disabled.

VIN_ON and VIN_OFF can be reconfigured via the PMBus

interface. A minimum 2V hysteresis between VIN_ON and

VIN_OFF is required.

Input Over Voltage Lockout

April 15, 2013

Page 9

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Feature Descriptions (continued)

Load Sharing

For higher power requirements, the EBDW020A0 power

module offers an optional feature for parallel operation (-P

Option code). This feature provides a precise forced output

voltage load regulation droop characteristic. The output set

point and droop slope are factory calibrated to insure

optimum matching of multiple modules’ load regulation

characteristics. To implement load sharing, the following

requirements should be followed:

Figure 17. Circuit Configuration for remote sense.

. The V_OUT(+) and V_OUT(-) pins of all parallel modules must be

connected together. Balance the trace resistance for each

module’s path to the output power planes, to insure best load

sharing and operating temperature balance.

. V_INmust remain between 40V_dcand 75V_dcfor droop sharing

to be functional.

. It is permissible to use a common Remote On/Off signal to

start all modules in parallel.

Configurable Control Pins

The EBDW020A0B contains two configurable control pins, T/C1

and C2, referenced to the module secondary SIG_GND. See

Mechanical Views for pin locations. The following table list the

default factory configurations for the functions assigned to

these pins. Additional configurations can be accomplished via

. These modules contain means to block reverse current flow

the PMBus command, MFR_CPIN_ARA_CONFIG. Following the

upon start-up, when output voltage is present from other

table, there is a feature description for each function.

parallel modules, thus eliminating the requirement for

external output ORing devices. Modules with the –P option

will self-determine the presence of voltage on the output

from other operating modules, and automatically increase its

Turn On delay, T_delay, as specified in the Feature Specifications

Table.

. When parallel modules startup into a pre-biased output, e.g.

partially discharged output capacitance, the T_riseis

automatically increased, as specified in the Feature

Specifications Table, to insure graceful startup.

. Insure that the load is <50% I_O,MAX(for a single module) until

all parallel modules have started (load full start > module

T_delaytime max + T_risetime).

Pin Designation/Function Module

Configuration

T/C1

On/Off (o)

Trim

On/Off (o)

C2

Code

w/o -P

with -P

Power Good

On/Off (o)

Power Good

Factory Default

Via PMBus

Factory Default

Remote On/Off(o)

The module contains an additional remote on/off control input

On/Off(o), via either the T/C1 or C2 pin, reference to the

SIG_GND pin. The factory default configuration is set to ignore

this input, unless activated by the PMBus command,

. If fault tolerance is desired in parallel applications, output

ORing devices should be used to prevent a single module

failure from collapsing the load bus.

MFR_CPIN_ON_OFF_CONFIG. This command is also used to

configure the logic for the On/Off(o) pin. Positive logic remote

on/off turns the module on during a logic HI voltage on the

ON/OFF pin, and off during a logic LO. Negative logic remote

on/off turns the module off during a logic HI, and on during a

logic LO. The On/Off(o) circuit is powered from an internal bias

supply, referenced to SIG_GND. To turn the power module on

and off, the user must supply a switch to control the voltage

between the On/Off (o) terminal and the SIG_GND pin (V_on/off(o)).

The switch can be an open collector or equivalent (see Figure

14). A logic LO is V_on/off(o) = -0.3V to 0.8V. The typical I_on/off(o)

during a logic low is 330µA. The switch should maintain a logic

LO voltage while sinking 250µA. During a logic HI, the

maximum V_on/off(o) generated by the power module is 3.3V. The

maximum allowable leakage current of the switch at V_on/off(o) =

2.0V is 130µA. If using an external voltage source, the

maximum voltage V_on/offon the pin is 3.3V with respect to the

V_i(-) terminal.

Remote Sense

Remote sense minimizes the effects of distribution losses by

regulating the voltage at the remote-sense connections (See

Figure 17). The SENSE(-) pin should be always connected to

V_O(–).The voltage between the remote-sense pins and the

output terminals must not exceed the output voltage sense

range given in the Feature Specifications table:

[V_O(+) – V_O(–)] – [SENSE(+) ]  0.5 V

Although the output voltage can be increased by both the

remote sense and by the trim, the maximum increase for the

output voltage is not the sum of both. The maximum increase

is the larger of either the remote sense or the trim. The amount

of power delivered by the module is defined as the voltage at

the output terminals multiplied by the output current. When

using remote sense and trim, the output voltage of the module

can be increased, which at the same output current, would

increase the power output of the module. Care should be

taken to ensure that the maximum output power of the

module remains at or below the maximum rated power

(Maximum rated power = Vo,set x Io,max).

If not using the Remote On/Off(o) feature, the pin may be left

N/C.

April 15, 2013

Page 10

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

511

20





Feature Descriptions (continued)

Power Good, PG

R_trimdown



10.22 









R_{trim down} 15.3k

The EBDW020A0B module provides a Power Good (PG) feature,

which compares the module’s output voltage to the module’s

POWER_GOOD_ON and POWER_GOOD_OFF values. These

values are adjustable via PMBus. PG is asserted when the

module’s output voltage is above the POWER_GOOD_ON

value, and PG is de-asserted if any condition such as

overtemperature, overcurrent or loss of regulation occurs that

would result in the output voltage going below the

POWER_GOOD_OFF value.

Connecting an external resistor (R_trim-up) between the T/C1 pin

and the V_O(+) (or Sense (+)) pin increases the output voltage set

point. The following equations determine the required external

resistor value to obtain a percentage output voltage change of

∆%:

5.11  12 .0V  (100  %)

1.225  %

511





R_{trim up}





 10 .22 









 %

The PG signal, provided on pin C2, is implemented with an

open-drain node, pulled up via a 10kꢀ resistor to 3.3V

internally. For Positive Logic PG (default), the PG signal is HI,

when PG is asserted, and LO, when the PG is de-asserted. For

Negative Logic PG, the PG signal is LO, when PG is asserted,

and HI, when the PG is de-asserted.

V

 12 .0V

12 .0V

Where









desired

 % 

 100





For example, to trim-up the output voltage of the module by

5% to 12.6V, R_trim-upis calculated is as follows:

 %  5

5.11  12 .0  (100  5) 511





The PMBus command MFR_PGOOD_POLARITY is used to set

the logic polarity of the signal.

R_trim





 10 .22 

 up









1.225  5

5

R_{trim up} 938.8

If not using the Power Good feature, the pin may be left N/C.

The voltage between the V_O(+) and V_O(–) terminals must not

exceed the minimum output overvoltage protection value

shown in the Feature Specifications table. This limit includes

any increase in voltage due to remote-sense compensation

and output voltage set-point adjustment trim.

Although the output voltage can be increased by both the

remote sense and by the trim, the maximum increase for the

output voltage is not the sum of both. The maximum increase

is the larger of either the remote sense or the trim. The amount

of power delivered by the module is defined as the voltage at

the output terminals multiplied by the output current. When

using remote sense and trim, the output voltage of the module

can be increased, which at the same output current would

increase the power output of the module. Care should be

taken to ensure that the maximum output power of the

module remains at or below the maximum rated power

(Maximum rated power = V_O,setx I_O,max).

Trim, Output Voltage Programming

Trimming allows the output voltage set point to be increased

or decreased; this is accomplished by connecting an external

resistor between the TRIM pin and either the V_O(+) pin or the

V_O(-) pin.

V_O(+)

R_trim-up

LOAD

T/C1

EBDW020A0B

R_trim-down

V_O(-)

Thermal Considerations

Figure 18. Circuit Configuration to Trim Output Voltage.

The power modules operate in a variety of thermal

environments and sufficient cooling should be provided to help

ensure reliable operation.

Thermal considerations include ambient temperature, airflow,

module power dissipation, and the need for increased

reliability. A reduction in the operating temperature of the

module will result in an increase in reliability.

Connecting an external resistor (R_trim-down) between the T/C1

pin and the Vo(-) (or Sense(-)) pin decreases the output voltage

set point. To maintain set point accuracy, the trim resistor

tolerance should be ±1.0%.

The following equation determines the required external

resistor value to obtain a percentage output voltage change of

∆%.

The thermal data presented here is based on physical

measurements taken in a wind tunnel, using automated

thermo-couple instrumentation to monitor key component

temperatures: FETs, diodes, control ICs, magnetic cores,

ceramic capacitors, opto-isolators, and module pwb

conductors, while controlling the ambient airflow rate and

temperature. For a given airflow and ambient temperature, the

module output power is increased, until one (or more) of the

components reaches its maximum derated operating

511





R _trim



 10 .22 

 down









 %

12 .0V  V

12 .0V

Where







desired

 % 

 100







For example, to trim-down the output voltage of the module

by 20% to 9.6V, Rtrim-down is calculated as follows:

%  20

April 15, 2013

Page 11

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Please refer to the Application Note “Thermal Characterization

Thermal Considerations (continued)

Process For Open-Frame Board-Mounted Power Modules” for

temperature, as defined in IPC-9592. This procedure is then

a detailed discussion of thermal aspects including maximum

repeated for a different airflow or ambient temperature until a

device temperatures.

family of module output derating curves is obtained.

Heat Transfer via Convection

Increased airflow over the module enhances the heat transfer

via convection. The thermal derating of figure 21-23 shows

the maximum output current that can be delivered by each

module in the indicated orientation without exceeding the

maximum TH_xtemperature versus local ambient temperature

(T_A) for several air flow conditions.

The use of Figure 21 is shown in the following example:

Example

What is the minimum airflow necessary for a EBDW020A0B

operating at V_I= 48 V, an output current of 15A, and a

maximum ambient temperature of 60 °C in transverse

orientation.

Solution:

Velocity = 0.5m/s (100 LFM) or greater.

Given: V_in= 48V, I_O= 14A, T_A= 60 °C

Determine required airflow velocity (Use Figure 21):

Velocity = 0.5m/s (100 LFM) or greater.

Heat-dissipating components are mounted on the top side of

the module. Heat is removed by conduction, convection and

radiation to the surrounding environment. Proper cooling can

be verified by measuring the thermal reference temperature

(TH₁or TH₂). Peak temperature occurs at the position indicated

in Figure 19 and 20. For reliable operation this temperature

should not exceed TH₁=125°C or TH₂=105°C. For extremely

high reliability you can limit this temperature to a lower value.

LOCAL AMBIENT TEMPERATURE, T_A(C)

Figure 21. Output Current Derating for the Open Frame

EBDW020A0B in the Transverse Orientation; Airflow

Direction from Vin(-) to Vin(+); Vin = 48V.

Figure 19. Location of the thermal reference temperature TH. Do

not exceed 113 °C.

Figure 20. Location of the thermal reference temperature

TH3 for Baseplate module. Do not exceed 110 °C.

The output power of the module should not exceed the rated

power for the module as listed in the Ordering Information

Figure 22. Output Current Derating for the Base Plate

table.

LOCAL AMBIENT TEMPERATURE, T_A(C)

EBDW020A0Bxx-H in the Transverse Orientation; Airflow

Direction from Vin(-) to Vin(+); Vin = 48V.

April 15, 2013

Page 12

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Max. sustain temperature :

Thermal Considerations (continued)

245C (J-STD-020C Table 4-2: Packaging Thickness>=2.5mm

/

Volume > 2000mm³),

Peak temperature over 245C is not suggested due to the

potential reliability risk of components under continuous high-

temperature.

Min. sustain duration above 217C : 90 seconds

Min. sustain duration above 180C : 150 seconds

Max. heat up rate: 3C/sec

Max. cool down rate: 4C/sec

In compliance with JEDEC J-STD-020C spec for 2 times reflow

requirement.

Pb-free Reflow Profile

BMP module will comply with J-STD-020 Rev. C

(Moisture/Reflow Sensitivity Classification for

Nonhermetic Solid State Surface Mount Devices) for both Pb-

free solder profiles and MSL classification

procedures. BMP will comply with JEDEC J-STD-020C

specification for 3 times reflow requirement. The suggested

Pb-free solder paste is Sn/Ag/Cu (SAC). The recommended

linear reflow profile using Sn/Ag/Cu solder is shown in Figure

24.

LOCAL AMBIENT TEMPERATURE, T_A(C)

Figure 23. Output Current Derating for the Base Plate

EBDW020A0Bxx-H and 0.25” heat sink in the Transverse

Orientation; Airflow Direction from Vin(-) to Vin(+); Vin =

48V.

Layout Considerations

The EBDW020A0B power module series are low profile in order

to be used in fine pitch system card architectures. As such,

component clearance between the bottom of the power

module and the mounting board is limited. Avoid placing

copper areas on the outer layer directly underneath the power

module. Also avoid placing via interconnects underneath the

power module.

Peak Temp. 240-245°C

Ramp down

max. 4°C/Sec

217°C

200°C

Time Limited 90 Sec.

above 217°C

150°C

For additional layout guide-lines, refer to FLT007A0Z Data

Sheet.

Preheat time

100-150 Sec.

Through-Hole Lead-Free Soldering

Information

Ramp up

max. 3°C/Sec

The RoHS-compliant, Z version, through-hole products use the

SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant

25°C

Time

Figure 24. Recommended linear reflow profile using

Sn/Ag/Cu solder.

components. The non-Z version products use lead-tin (Pb/Sn)

solder and RoHS-compliant components. Both version

modules are designed to be processed through single or dual

wave soldering machines. The pins have an RoHS-compliant,

pure tin finish that is compatible with both Pb and Pb-free

wave soldering processes. A maximum preheat rate of 3C/s is

suggested. The wave preheat process should be such that the

temperature of the power module board is kept below 210C.

For Pb solder, the recommended pot temperature is 260C,

while the Pb-free solder pot is 270C max. Not all RoHS-

compliant through-hole products can be processed with

paste-through-hole Pb or Pb-free reflow process. If additional

information is needed, please consult with your GE

MSL Rating

The EBDW020A0B modules have a MSL rating of 2a.

Storage and Handling

The recommended storage environment and handling

procedures for moisture-sensitive surface mount packages is

detailed in J-STD-033 Rev. A (Handling, Packing, Shipping and

Use of Moisture/Reflow Sensitive Surface Mount Devices).

Moisture barrier bags (MBB) with desiccant are required for

MSL ratings of 2 or greater. These sealed packages should not

be broken until time of use. Once the original package is

broken, the floor life of the product at conditions of 30°C and

60% relative humidity varies according to the MSL rating (see

J-STD-020A). The shelf life for dry packed SMT packages will

be a minimum of 12 months from the bag seal date, when

stored at the following conditions: < 40° C, < 90% relative

humidity.

representative for more details.

Reflow Lead-Free Soldering Information

The RoHS-compliant through-hole products can be processed

with the following paste-through-hole Pb or Pb-free reflow

process.

April 15, 2013

Page 13

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Post Solder Cleaning and Drying

Considerations

Post solder cleaning is usually the final circuit-board assembly

process prior to electrical board testing. The result of

inadequate cleaning and drying can affect both the reliability

of a power module and the testability of the finished

circuit-board assembly. For guidance on appropriate soldering,

cleaning and drying procedures, refer to GE Board Mounted

Power Modules: Soldering and Cleaning Application Note

(AP01-056EPS).

EMC Considerations

The circuit and plots in Figure 25 shows a suggested

configuration to meet the conducted emission limits of

EN55022 Class B. For further information on designing for EMC

compliance, please refer to the FLT007A0Z data sheet.

Level [dBµV]

80

70

60

+x

50

+

x

+

x

40

30

20

10

0

xx

x

++

+

150k 300k 500k

1M

2M 3M 4M5M 7M 10M

30M

Frequency [Hz]

x xMES CE0916111952_fin QP

+ +MES CE0916111952_fin AV

MES CE0916111952_pre PK

MES CE0916111952_pre AV

Figure 25. EMC Considerations.

April 15, 2013

Page 14

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Packaging Details

All versions of the EBDW020A0B are supplied as standard in

the plastic trays shown in Figure 26. Each tray contains a total

of 18 power modules. The trays are self-stacking and each

shipping box for the EBDW020A0B module contains 2 full

trays plus one empty hold-down tray giving a total number of

36 power modules.

Tray Specification

Material

PET (1mm)

10⁹-10¹¹/PET

Max surface resistivity

Color

Clear

Capacity

18 power modules

Min order quantity

36pcs (1 box of 2 full trays +

1 empty top tray)

Open Frame Module Tray

Base Plate Module Tray

Figure 26. EBDW020 Packaging Tray

April 15, 2013

Page 15

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

active SMBALERT. However, when the EBDW020A0B module

is used in systems that do support ARA, Bit 4 of the

Digital Feature Descriptions

PMBus Interface Capability

MFR_CPIN_ARA_CONFIG command can be used to

reconfigure the module to utilize ARA. In this case, the

EBDW020A0B will no longer respond to its programmed

address, when in an ALERT active state. The master is

expected to perform the modified received byte operation,

and retire the ALERT active signal. At this time, the

EBDW020A0B will return to it’s resistor programmed address,

allowing normal master-slave communications to proceed.

The EBDW020A0B does not contain capability to arbitrate

data bus contention caused by multiple modules responding

to the modified received byte operation. Therefore, when the

ARA is used in a multiple module PMBus application, it is

necessary to have the EBDW020A0B module at the lowest

programmed address in order for the host to properly

determine all modules’ address that are associated with an

active SMBAlert. Please contact your GE sales representative

for further assistance, and for more information on the

SMBus alert response protocol, see the System Management

Bus (SMBus) specification.

The EBDW020A0B series is equipped with a digital PMBus

interface to allow the module to be configured, and

communicate with system controllers. Detailed timing and

electrical characteristics of the PMBus can be found in the

PMB Power Management Protocol Specification, Part 1,

revision 1.2, available at http://pmbus.org. The EBDW020A0B

supports both the 100kHz and 400kHz bus timing

requirements. The EBDW020A0B shall stretch the clock, as

long as it does not exceed the maximum clock LO period of

20ms. The EBDW020A0B will check the Packet Error Checking

scheme (PEC) byte, if provided by the PMBus master, and

include a PEC byte in all responses to the master. However,

the EBDW020A0B does not require a PEC byte from the

PMBus master.

The EBDW020A0B supports a subset of the commands in the

PMBus 1.2 specification. Most all of the controller

parameters can be programmed using the PMBus and stored

as defaults for later use. All commands that require data

input or output use the linear format. The exponent of the

data words is fixed at a reasonable value for the command

and altering the exponent is not supported. Direct format

data input or output is not supported by the EBDW020A0B.

The supported commands are described in greater detail

below.

PMBus Addressing

The power module can be addressed through the PMBus

using a device address. The module has 64 possible

addresses (0 to 63 in decimal) which can be set using

resistors connected from the ADDR0 and ADDR1 pins to GND.

Note that some of these addresses (0 through 12, 40, 44, 45,

and 55 in decimal) are reserved according to the SMBus

specifications and may not be useable. The address is set in

the form of two octal (0 to 7) digits, with each pin setting one

digit. The ADDR1 pin sets the high order digit and ADDR0 sets

the low order digit. The resistor values suggested for each

digit are shown in Table 4 (1% tolerance resistors are

recommended).

The EBDW020A0B contains non-volatile memory that is used

to store configuration settings and scale factors. The

settings programmed into the device are not automatically

saved into this non-volatile memory though. The

STORE_DEFAULT_ALL command must be used to commit the

current settings to non-volatile memory as device defaults.

The settings that are capable of being stored in non-volatile

memory are noted in their detailed descriptions.

Table 4

Resistor Value (KΩ)

Digit

0

1

2

3

4

5

6

7

10

SMBALERT Interface Capability

15.4

23.7

36.5

54.9

84.5

130

200

The EBDW020A0B also supports the SMBALERT response

protocol. The SMBALERT response protocol is a mechanism

through which the EBDW020A0B can alert the PMBus master

that it has an active status or alarm condition via pulling the

SMBALERT pin to an active low. The master processes this

condition, and simultaneously addresses all slaves on the

PMBus through the Alert Response Address. Only the slave(s)

that caused the alert (and that support the protocol)

acknowledges this request. The master performs a modified

receive byte operation to get the slave’s address. At this

point, the master can use the PMBus status commands to

query the slave that caused the alert. Note: The

ADDR1

ADDR0

R_ADDR0

R_ADDR1

EBDW020A0B can only respond to a single address at any

given time. Therefore, the factory default state for the

EBDW020A0B module is to retain it’s resistor programmed

address, when it is in an ALERT active condition, and not

respond to the ARA. This allows master systems, which do

not support ARA, to continue to communicate with the slave

EBDW020A0B using the programmed address, and using the

various READ_STATUS commands to determine the cause for

the SMBALERT. The CLEAR_FAULTS command will retire the

SIG_GND

Figure 27. Circuit showing connection of resistors used to

set the PMBus address of the module.

The user must know which I²C addresses are reserved in a

system for special functions and set the address of the

module to avoid interfering with other system operations.

April 15, 2013

Page 16

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Both 100kHz and 400kHz bus speeds are supported by the

module. Connection for the PMBus interface should follow

the High Power DC specifications given in section 3.1.3 in the

SMBus specification V2.0 for the 400kHz bus speed or the

Low Power DC specifications in section 3.1.2. The complete

SMBus specification is available from the SMBus web site,

smbus.org.

PU: Factory set to 1. EBDW025A0B requires On/Off(i) pin to

be connected to proper input rail for module to power up.

This bit is used together with the CMD, CPR and ON bits to

determine startup.

Bit Value

Action

Module does not power up until commanded

by the analog ON/OFF pin and the OPERATION

command as programmed in bits [2:0] of the

ON_OFF_CONFIG register.

1

PMBus Data Format

For commands that set or report any voltage thresholds

related to output voltage (including VOUT_COMMAND,

VOUT_MARGIN, POWER_GOOD and READ_VOUT), the module

supports the linear data format consisting of a two byte

value with a 16-bit, unsigned mantissa, and a fixed exponent

of -12. The format of the two data bytes is shown below:

CMD: The CMD bit controls how the device responds to the

OPERATION command.

Bit Value

Action

Module ignores the ON bit in the OPERATION

command

0

Module responds to the ON bit in the

OPERATION command

1

CPR: Factory set to 1. EBDW025A0B requires On/Off(i) pin to

be connected to proper input rail for module to power up.

This bit is used together with the CMD and ON bits to

determine startup.

Bit Value

Action

The value of the number is then given by

Value = Mantissa x 2^-12

Module requires the analog ON/OFF pin to be

asserted to start the unit

1

For commands that set all other thresholds, voltages or

report such quantities, the module supports the linear data

format consisting of a two byte value with an 11-bit, two’s

complement mantissa and a 5-bit, two’s complement

exponent. The format of the two data bytes is shown below:

PMBus Adjustable Input Undervoltage Lockout

The module allows adjustment of the input under voltage

lockout and hysteresis. The command VIN_ON allows setting

the input voltage turn on threshold, while the VIN_OFF

command sets the input voltage turn off threshold. For both

the VIN_ON and VIN_OFF commands, possible values range

from 32.000 to 46.000V in 0.125V steps. VIN_ON must be

2.000V greater than VIN_OFF.

Both the VIN_ON and VIN_OFF commands use the “Linear”

format with two data bytes. The upper five bits [7:3] of the

high data byte form the two’s complement representation of

the exponent, which is fixed at –3 (decimal). The remaining 11

bits are used for two’s complement representation of the

mantissa, with the 11^thbit fixed at zero since only positive

numbers are valid. The data associated with VIN_ON and

VIN_OFF can be stored to non-volatile memory using the

STORE_DEFAULT_ALL command.

The value is of the number is then given by

Value = Mantissa x 2 ^Exponent

PMBus Enabled On/Off

The module can also be turned on and off via the PMBus

interface. The OPERATION command is used to actually turn

the module on and off via the PMBus, while the

ON_OFF_CONFIG command configures the combination of

analog ON/OFF pin input and PMBus commands needed to

turn the module on and off. Bit [7] in the OPERATION

command data byte enables the module, with the following

functions:

PMBus Adjustable Soft Start Delay and Rise Time

The soft start delay and rise time can be adjusted in the

module via PMBus. The TON_DELAY command sets the delay

time in ms, and allows choosing delay times between 10ms

and 500ms, with resolution of 0.5ms. The TON_RISE

command sets the rise time in ms, and allows choosing soft

start times between 15ms and 500ms, with resolution of

0.5ms. When setting TON_RISE, make sure that the charging

current for output capacitors can be delivered by the module

in addition to any load current to avoid nuisance tripping of

the overcurrent protection circuitry during startup. Both the

TON_RISE and TON_DELAY commands use the “Linear”

format with two data bytes. The upper five bits [7:3] of the

high data byte form the two’s complement representation of

the exponent, which is fixed at –1 (decimal). The remaining 11

0

1

:

Output is disabled

Output is enabled

This module uses the lower five bits of the ON_OFF_CONFIG

data byte to set various ON/OFF options as follows:

Bit Position

Access

4

r

3

r/w

2

r

1

r

POL

1

0

r

CPA

1

Function

Default Value

PU

1

CMD CPR

1

April 15, 2013

Page 17

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

bits are used for two’s complement representation of the

mantissa, with the 11^thbit fixed at zero since only positive

numbers are valid. The data associated with TON_RISE and

TON_DELAY can be stored to non-volatile memory using the

STORE_DEFAULT_ALL command.

data in the linear format. The upper five bits [7:3] of the high

data byte form the two’s complement representation of the

exponent, which is fixed at –3 (decimal). The remaining 11

bits are used for two’s complement representation of the

mantissa, with the 11^thbit fixed at zero since only positive

numbers are valid.

Output Voltage Adjustment Using the PMBus

During module manufacture, offset and gain correction

values are written into the non-volatile memory of the

module to null errors in the tolerance and A/D conversion of

Vin. The command MFR_VIN_READ_CAL_OFFSET can be used

to read the offset - two bytes consisting of a five-bit

exponent (fixed at -3) and a 11-bit mantissa in two’s

complement format. The resolution is 120mV. The command

MFR_VIN_READ_CAL_GAIN can be used to read the gain

correction - two bytes consisting of a unsigned 16 bit

number. The resolution of this correction factor 0.000122.

The corrected input voltage reading is then given by:

The EBDW020A0B module output voltage set point is

adjusted using the VOUT_COMMAND. The output voltage

setting uses the Linear data format, with the 16 bits of the

VOUT_COMMAND formatted as an unsigned mantissa, and a

fixed exponent of -12 (decimal) (read from VOUT_MODE).

V_OUT= Mantissa x 2^-12

The range limits for VOUT_COMMAND are 5.00V to 13.20V,

and the resolution is 0.244mV.

The data associated with VOUT_COMMAND can be stored to

non-volatile memory using the STORE_DEFAULT_ALL

command.

V (Read) 

IN

[V (A/D)(MFR_VIN_READ_CAL_GAIN/8192)]

IN

Output Voltage Margining Using the PMBus

MFR_VIN_READ_CAL_OFFSET

The EBDW020A0B module can also have its output voltage

margined via PMBus commands. The command

Measuring Output Current Using the PMBus

VOUT_MARGIN_HIGH sets the margin high voltage, while the

command VOUT_MARGIN_LOW sets the margin low voltage.

Both the VOUT_MARGIN_HIGH and VOUT_MARGIN_LOW

commands use the “Linear” mode with the exponent fixed at

–12 (decimal). The data associated with VOUT_MARGIN_HIGH

and VOUT_MARGIN_LOW can be stored to non-volatile

memory using the STORE_DEFAULT_ALL command.

The module measures output current by using the output

filter inductor winding resistance as a current sense element.

The module can provide output current information using the

READ_IOUT command. The command returns two bytes of

data in the linear format. The upper five bits [7:3] of the high

data byte form the two’s complement representation of the

exponent, which is fixed at –4 (decimal). The remaining 11

bits are used for two’s complement representation of the

mantissa, with the 11^thbit fixed at zero since only positive

numbers are valid.

The module is commanded to go to the margined high or low

voltages using the OPERATION command. Bits [5:2] are used

to enable margining as follows:

00XX

0110

1010

:

Margin Off

Margin Low (Act on Fault)

Margin High (Act on Fault)

During module manufacture, offset and gain correction

values are written into the non-volatile memory of the

module to null errors in the tolerance and A/D conversion of

I_OUT. The command MFR_IOUT_CAL_OFFSET can be used to

read the offset - two bytes consisting of a five-bit exponent

(fixed at -4) and a 11-bit mantissa in two’s complement

format. The resolution is 0.19A. The command

MFR_IOUT_CAL_GAIN can be used to read the gain

correction - two bytes consisting of a unsigned 16 bit

number. The resolution of this correction factor 0.000122.

The READ_IOUT command provides module average output

current information. This command only supports positive

current sourced from the module. If the converter is sinking

current a reading of 0 is provided.

Measuring Output Voltage Using the PMBus

The module can provide output voltage information using

the READ_VOUT command. The command returns two bytes

of data in the linear format, with the 16 bits of the

READ_VOUT formatted as an unsigned mantissa, and a fixed

exponent of -12 (decimal).

During module manufacture, an offset correction value is

written into the non-volatile memory of the module to null

errors in the tolerance and A/D conversion of V_OUT. The

command MFR_VOUT_READ_CAL_OFFSET can be used to

read the offset - two bytes consisting of a signed 16-bit

mantissa in two’s complement format, using a fixed

exponent of -12 (decimal). The resolution is 0.244mV. The

corrected Output voltage reading is then given by:

I_OUT(Read) 

[I_OUT(A/ D)(MFR _ IOUT _CAL _GAIN /8192)]

 MFR _ IOUT _ CAL _ OFFSET

Note that the current reading provided by the module is

corrected for temperature.

V_OUT(Read) [V_OUT(A/ D) 

MFR_VOUT_ READ_CAL_OFFSET

Measuring Input Voltage Using the PMBus

The module can provide input voltage information using the

READ_VIN command. The command returns two bytes of

April 15, 2013

Page 18

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Measuring the Temperature using the PMBus

STATUS_IOUT : Returns one byte of information relating to

The module can provide temperature information using the

the status of the module’s output current related faults.

READ_TEMPERATURE_1 command. The command returns

Bit Position

Flag

Default Value

two bytes of data in the linear format. The upper five bits

[7:3] of the high data byte form the two’s complement

representation of the exponent, which is fixed at –2 (decimal).

The remaining 11 bits are used for two’s complement

representation of the mantissa.

7

6

5

4

3

2

1

0

IOUT OC Fault

0

X

IOUT OC Warning

X

Note that the module’s temperature sensor is located close

to the module hot spot TH₁(see Thermal Considerations).and

is subjected to temperatures higher than the ambient air

temperature near the module. The temperature reading will

be highly influenced by module load and airflow conditions.

STATUS_INPUT : Returns one byte of information relating to

the status of the module’s input voltage related faults.

Reading the Status of the Module using the PMBus

Bit Position

Flag

Default Value

The module supports a number of status information

commands implemented in PMBus. However, not all features

are supported in these commands. A X in the FLAG cell

indicates the bit is not supported.

7

6

5

4

3

2

1

0

VIN OV Fault

0

X

VIN UV Fault

Module Off (Low VIN)

STATUS_WORD : Returns two bytes of information with a

summary of the module’s fault/warning conditions.

High Byte

X

Bit Position

Flag

Default Value

15

14

13

12

11

10

9

VOUT fault

IOUT fault or warning

Input Voltage fault

0

STATUS_TEMPERATURE : Returns one byte of information

relating to the status of the module’s temperature related

faults.

X

Bit Position

Flag

Default Value

POWER_GOOD# (is negated)

7

6

5

4

3

2

1

0

OT Fault

OT Warning

0

X

8

Low Byte

Flag

X

OFF

Bit Position

Default Value

7

6

5

4

3

2

1

0

VOUT Overvoltage

IOUT Overcurrent

VIN Undervoltage

Temperature

CML (Comm. Memory Fault)

X

STATUS_CML : Returns one byte of information relating to the

status of the module’s communication related faults.

Bit Position

Flag

Default Value

Invalid/Unsupported

7

0

Command

6

5

4

3

2

1

0

Invalid/Unsupported Data

Packet Error Check Failed

0

STATUS_VOUT : Returns one byte of information relating to

the status of the module’s output voltage related faults.

X

Bit Position

Flag

Default Value

7

6

5

4

3

2

1

0

VOUT OV Fault

0

X

April 15, 2013

Page 19

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Summary of Supported PMBus Commands

This section outlines the PMBus command support for the EBDW020A0B bus converters. Each supported command is outlined in

order of increasing command codes with a quick reference table of all supported commands included at the end of the section.

Each command will have the following basic information.

Command Name [Code]

Command support

Data format

Factory default

Additional information may be provided in tabular form or other format, if necessary.

OPERATION [0x01]

Command support: On/Off Immediate and Margins (Act on Fault). Soft off with sequencing not supported and Margins (Ignore

Fault) not supported. Therefore bits 6, 3, 2, 1 and 0 set as read only at factory defaults.

Format

8 bit unsigned (bit field)

Bit Position

Access

7

r/w

6

r

5

r/w

4

r/w

3

r

2

r

1

r

0

r

Function

Default Value

ON/OFF

Bits[5:4]

Bits[3:2]

N/A

1

0

1

0

ON_OFF_CONFIG [0x02]

Command support: Bit 1 polarity will be set based upon module code [0=Negative on/off logic, 1=positive on/off logic to allow

customer system to know hardware on/off logic

Format

8 bit unsigned (bit field)

Bit Position

Access

7

r

6

r

5

r

4

r

3

r

2

r/w

1

r

0

r

Function

(reserved)

Bit 4 pu

Bit 3 cmd

Bit 2 cpr

Bit 1 pol

module

code

Bit 0 cpa

Default Value

0

1

CLEAR_FAULTS [0x03]

Command support: All functionality

STORE_DEFAULT_ALL[0x11]

Command support: All functionality – Stores operating parameters to EEprom memory.

RESTORE_DEFAULT_ALL[0x12]

Command support: All functionality – Restores operating parameters from EEprom memory.

VOUT_MODE[0x20]

Command support: Supported. Factory default: 0x14 – indicates linear mode with exp = -12

Format

8 bit unsigned (bit field)

Bit Position

Access

7

r

6

r

5

r

4

r

3

r

2

r

1

r

0

r

Function

Default Value

Mode (linear)

0

2’s complement exponent

1

0

1

0

VOUT_COMMAND [0x21]

Data format: 16 bit unsigned mantissa (implied exponent per VOUT_MODE)

Factory default: 12.000V ( 12.00 / 2^-12→ 49,152 = 0xC000 )

Range limits (max/min): 13.200V/5.000V

Units: volt

Command support: Supported

VOUT_CAL_OFFSET [0x23]

Range limits (max/min): +0.25/-0.25

Units: volt

Command support: read/write support, lockout per MFR_DEVICE_TYPE, functionality implemented

April 15, 2013

Page 20

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

VOUT_MARGIN_HIGH [0x25]

Range limits (max/min): 13.2/5.0

Units: volt

Command support: read/write support, full functionality except “Ignore faults”.

Note: Range cross-check - value must be greater than VOUT_MARGIN_LOW value.

VOUT_MARGIN_LOW [0x26]

Range limits (max/min): 13.2/5.0

Units: volt

Command support: read/write support, full functionality except “Ignore faults”.

Note: Range cross-check - value must be less than VOUT_MARGIN_HIGH value.

VOUT_DROOP [0x28]

Factory default: 0 (No droop); 15 (Parallel operation)

Range limits (max/min): 50/0

Units: mv/A

Command support: All functionality

VIN_ON [0x35]

Range limits (max/min): 46/32

Units: volt

Command support: All functionality

Note: Special interlock checks between VIN_ON and VIN_OFF maintain a hysteresis gap of 2V minimum and do not allow the OFF

level to be higher than and ON level

VIN_OFF [0x36]

Range limits (max/min): 46/32

Units: volt

Command support: All functionality

Note: Special interlock checks between VIN_ON and VIN_OFF maintain a hysteresis gap of 2V minimum and do not allow the OFF

level to be higher than and ON level

VOUT_OV_FAULT_LIMIT [0x40]

Range limits (max/min): 15.99/10.9 (See note 2)

Units: volt

Command support: All functionality

Note:

1. Range cross- check – value must be greater than VOUT_COMMAND value.

2. The maximum OV Fault Limit equals the output set point plus 3V, up to 15.99V. This is an automatic module protection

feature that will override a user-set fault limit if the user limit is set too high.

VOUT_OV_FAULT_RESPONSE [0x41]

Command support:

‐

Response settings (bits RSP0:1) – only a setting of 10, unit shuts down and responds according to the retry settings

below, is supported.

‐

Retry settings (bits RS0:2) – only settings of 000 (unit does not attempt to restart on fault) and 111 unit continuously

restarts (normal startup) while fault is present until commanded off, bias power is removed or another fault

condition causes the unit to shutdown.

‐

Delay time setting (bits 0-2) – only DT0:2 = 0 (no delay) supported.

Default Settings: The default settings for the VOUT_OV_FAULT_RESPONSE command are;

‐

The unit shuts down in response to a VOUT over voltage condition.

The unit will continuously restart (normal startup) while the VOUT over voltage condition is present until it is

commanded off, bias power is removed or another fault condition causes the unit to shutdown.

The shutdown delay is set to 0 delay cycles.

‐

Format

8 bit unsigned (bit field)

Bit Position

Access

Function

7

6

5

r/w

RS[2]

1

4

r/w

RS[1]

1

3

r/w

RS[0]

1

2

1

0

r

RSP[1]

1

r

RSP[0]

0

r

DT[2]

0

r

DT[1]

0

r

DT[0]

0

Default Value

April 15, 2013

Page 21

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

IOUT_OC_FAULT_LIMIT [0x46]

Range limits (max/min): 41.5/20

Units: amp

Command support: All functionality

Note: Range cross-check – value must be greater than IOUT_OC_WARN_LIMIT value.

IOUT_OC_FAULT_RESPONSE [0x47]

Command support:

‐

Response settings (bits RSP0:1) – only settings of 11, unit shuts down and responds according to the retry settings

below, is supported.

‐

Retry settings (bits RS0:2) – only settings of 000 (unit does not attempt to restart on fault) and 111 unit continuously

restarts (normal startup) while fault is present until commanded off, bias power is removed or another fault

condition causes the unit to shutdown.

‐

Delay time setting (bits 0-2) – only DT0:2 = 0 (no delay) supported.

Default Settings: The default settings for the IOUT_OC_FAULT_RESPONSE command are;

‐

The unit shuts down in response to an IOUT over current condition.

The unit will continuously restart (normal startup) while the IOUT over current condition is present until it is

commanded off, bias power is removed or another fault condition causes the unit to shutdown.

The shutdown delay is set to 0 delay cycles.

‐

Format

8 bit unsigned (bit field)

Bit Position

Access

Function

7

6

5

r/w

RS[2]

1

4

r/w

RS[1]

1

3

r/w

RS[0]

1

2

1

0

r

RSP[1]

1

r

RSP[0]

1

r

DT[2]

0

r

DT[1]

0

r

DT[0]

0

Default Value

IOUT_OC_WARN_LIMIT [0x4A]

Range limits (max/min): 30.3/7.6

Units: amp

Command support: read/write support, functionality complete

Note: Range cross-check – value must be less than IOUT_OC_FAULT_LIMIT value.

OT_FAULT_LIMIT [0x4F]

Range limits (max/min): 140/25

Units: degrees C.

Command support: All functionality

Note: Range cross-check – value must be greater than OT_WARN_LIMIT value.

OT_FAULT_RESPONSE [0x50]

Command support:

‐

Response settings (bits RSP0:1) – only setting of 10, unit shuts down and responds according to the retry settings

below.

‐

Retry settings (bits RS0:2) – only settings of 000 (unit does not attempt to restart on fault) and 111 unit continuously

restarts (normal startup) while fault is present until commanded off, bias power is removed or another fault

condition causes the unit to shutdown.

‐

Delay time setting (bits 0-2) – only DT0:2 = 0 (no delay) supported.

Default Settings: The default settings for the OT_FAULT_RESPONSE command are;

‐

The unit shuts down in response to an over-temperature condition.

The unit will continuously restart (normal startup) while the over-temperature condition is present until it is

commanded off, bias power is removed or another fault condition causes the unit to shutdown.

The shutdown delay is set to 0 delay cycles.

‐

Format

8 bit unsigned (bit field)

Bit Position

Access

Function

7

6

5

r/w

RS[2]

1

4

r/w

RS[1]

1

3

r/w

RS[0]

1

2

1

0

r

RSP[1]

1

r

RSP[0]

0

r

DT[2]

0

r

DT[1]

0

r

DT[0]

0

Default Value

April 15, 2013

Page 22

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

OT_WARN_LIMIT [0x51]

Range limits (max/min): 125/25

Units: degrees C.

Command support: All functionality

Note: Range cross-check – value must be less than OT_FAULT_LIMIT value.

VIN_OV_FAULT_LIMIT [0x55]

Range limits (max/min): 90/48

Units: volt

Command support: All functionality

VIN_OV_FAULT_RESPONSE [0x56]

Command support:

Response settings (bits RSP0:1) – only settings of 11 (The device’s output is disabled while the fault is present.) is supported..

‐

Retry settings (bits RS0:2) – only settings of 000 (unit does not attempt to restart on fault.

‐

Delay time setting (bits 0-2) – only DT0:2 = 0 (no delay) supported.

Default Settings: The default settings for the VIN_OV_FAULT_RESPONSE command are;

‐

The unit shuts down in response to a VIN over voltage condition.

The unit will continuously prepares to restart (normal startup) while the VIN over voltage condition is present until it

is commanded off, bias power is removed, the VIN over voltage condition is removed, or another fault condition

causes the unit to shutdown.

‐

The shutdown delay is set to 0 delay cycles.

Format

8 bit unsigned (bit field)

Bit Position

Access

Function

7

6

5

4

3

2

1

0

r

RSP[1]

1

r

RSP[0]

1

r

RS[2]

0

r

RS[1]

0

r

RS[0]

0

r

DT[2]

0

r

DT[1]

0

r

DT[0]

0

Default Value

POWER_GOOD_ON [0x5E]

Range limits (max/min): 13.2/5.0

Units: volt

Command support: full support

Note: Range cross-check – value must be greater than POWER_GOOD_OFF value by 1.6V.

POWER_GOOD_OFF [0x5F]

Range limits (max/min): 13.2/5.0

Units: volt

Command support: full support

Note: Range cross-check – value must be less than POWER_GOOD_ON value by 1.6V.

TON_DELAY [0x60]

Range limits (max/min): 500/10

Units: milliseconds

Command support: full support

TON_RISE [0x61]

Range limits (max/min): 500/15

Units: milliseconds

Command support: full support

April 15, 2013

Page 23

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

STATUS_WORD [0x79]

Command support: full implementation for supported functions (note: Fans, MFR_SPECIFIC, Unknown not supported)

Format

8 bit unsigned (bit field)

Bit Position

Access

15

r

14

r

13

r

12

r

11

r

10

r

9

r

8

r

#PWR_

GOOD

UN

MFR_SPEC¹

Function

VOUT

INPUT

FANS¹

OTHER¹

I/POUT

KNOWN¹

Format

8 bit unsigned (bit field)

Bit Position

Access

7

r

6

r

5

r

4

r

3

r

2

r

1

r

0

r

OUTPUT

_OFF

VOUT_O

V _FAULT

VIN_UV

_FAULT

NONE OF

BUSY¹

Function

IOUT_OC _FAULT

TEMP

CML

ABOVE¹

(1) Not supported

STATUS_VOUT [0x7A]

Command support: VOUT_OV_FAULT support, all bit reset supported

Format

8 bit unsigned (bit field)

Bit Position

Access

7

6

5

4

3

2

1

0

r/reset(1)

r/ reset

VOUT_

MAX

r/ reset

TON_

MAX_

FAULT¹

r/ reset

TOFF_

MAX_

WARN¹

r/ reset

VOUT

VOUT_OV

_FAULT

VOUT_OV

_WARN¹

VOUT_UV

_WARN¹

VOUT_UV

_FAULT¹

Function

TRACKING

_WARN¹

ERROR¹

(1) Not supported

STATUS_IOUT [0x7B]

Command support: IOUT_OC_FAULT support, all bit reset supported

Format

8 bit unsigned (bit field)

Bit Position

Access

Function

7

6

5

4

3

2

1

0

r/ reset(1)

r/ reset

In Power

Limiting

Mode¹

r/ reset

IOUT_OC IOUT_OC _LV IOUT_OC

_FAULT _WARN

_FAULT¹

IOUT_UC Current Share

POUT_OP

_FAULT¹

POUT_OP

_WARN¹

_FAULT¹

Fault¹

(1) Not supported

STATUS_INPUT [0x7C]

Command support: VIN_OV_FAULT support, all bit reset supported

Format

8 bit unsigned (bit field)

Bit Position

Access

7

6

5

4

3

2

1

0

r/ reset(1)

r/ reset

Unit Off

(low input

voltage)

r/ reset

VIN_OV

_FAULT

VIN_OV

VIN_UV

_FAULT

IIN_OC

PIN_OP

Function

_WARN¹

_FAULT¹

_WARN¹

(1) Not supported

STATUS_TEMPERATURE [0x7D]

Command support: OT_WARN, OT_FAULT supported, all bit reset supported

Format

8 bit unsigned (bit field)

Bit Position

Access

7

6

5

4

3

2

1

0

r/ reset(1)

r/ reset

UT_

r/ reset

UT_

r/ reset

Function

OT_ FAULT

OT_ WARN

reserved

WARN¹

FAULT¹

(1) Not supported

April 15, 2013

Page 24

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

STATUS_CML [0x7E]

Command support: PEC_FAULT, INVALID_DATA, INVALID_CMD supported, all bit reset supported

Format

8 bit unsigned (bit field)

Bit Position

Access

7

6

5

4

3

2

1

0

r/ reset(1)

r/ reset

COM

r/ reset

Memory/

Logic fault

(other)¹

INVALID

CMD

INVALID

DATA

MEMORY

FAULT¹

PROC

Function

PEC FAILED

reserved

FAULT

FAULT¹

(other)¹

(1) Not supported

READ_VIN [0x88]

Command support: full support

READ_VOUT [0x8B]

Command support: full support

READ_IOUT [0x8C]

Command support: full support

READ_TEMPERATURE_1 [0x8D]

Command support: full support

MFR_DEVICE_TYPE [0xD0]

Command support: partial support in place (Mod Name)

Format

Bit Pos.

Access

Function

Default

Unsigned Binary

7

6

5

4

r/w

Reserved

0

3

r/w

2

r

1

r

0

r

7

r/w

6

r/w

5

r/w

4

r/w

3

r/w

2

r/w

1

0

r/w

WPE

1

r/w

Res

0

Module Name

0

1

0

1

Byte

High Byte

Bit

7:0

7:2

Description

Reserved

Module Name¹

Value

Meaning

1xxxxx

Module Name

0

1

0

Write Protect Enable not active.

Write Protect Enable active.

Reserved

Low Byte

1

0

WPE

Reserved

1. Present module designations (Non-isolated units will have a 0XXXXX format)

a. QBDW033A0B4xxx: 100000

b. QBDW025A0B4xxx: 100001

c. EBDW025A0B4xxx: 100010

d. EBDW020A0B4xxx: 100011

MFR_VOUT_READ_CAL_GAIN [0xD1]

Factory default: 0x2000

Range limits (max/min): 0x2666/0x1999

Units: N/A

Command support: support for VOUT gain calibration (factor in flash), lockout per MFR_DEVICE_TYPE

MFR_VOUT_READ_CAL_OFFSET [0xD2]

Range limits (max/min): exp must = -12

Units: N/A

Command support: support for VOUT offset calibration (factor in flash), lockout per MFR_DEVICE_TYPE

MFR_VIN_READ_CAL_GAIN [0xD3]

Factory default: 0X2000

Range limits (max/min): 0x2666/0x1999

Command support: support for VIN gain calibration (factor in flash), lockout per MFR_DEVICE_TYPE

April 15, 2013

Page 25

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

MFR_VIN_READ_CAL_OFFSET [0xD4]

Data format: VIN linear format

Range limits (max/min): exp must = -3

Units: N/A

Command support: support for VIN offset calibration (factor in flash), lockout per MFR_DEVICE_TYPE

MFR_IOUT_CAL_GAIN [0xD6]

Range limits (max/min): 0x2666/0x1999

Units: N/A

Command support: support for IOUT gain calibration, lockout per MFR_DEVICE_TYPE

MFR_IOUT_CAL_OFFSET [0xD7]

Range limits (max/min): exp must = -4

Units: N/A

Command support: support for IOUT offset calibration, lockout per MFR_DEVICE_TYPE

MFR_FW_REV [0xDB]

Range limits (max/min): 0 - 0xff (0.00 – 15.15)

Units: N/A

Command support: full read support

MFR_C1_C2_ARA_CONFIG [0xE0]

Command Code

Command support: Full support.

MFR_C1_C2_ARA_CONFIG

8 bit unsigned (bit field)

Command

Format

Bit Position

Access

Function

7

r

6

r

5

r

4

r/w

ARA

0

3

r/w

2

r/w

1

r/w

0

r/w

Reserved

0

Assignment Table

0

Default Value

0

Bit

Description

Value

Meaning

7:5

Reserved

000

Reserved

ARA not functional, module remains at resistor programmed address when SMBLAERT

is asserted

0

4

ARA

1

ARA functional, module responds to ARA only, when SMBLAERT is asserted

T/C1 pin: ON/OFF (Secondary)

C2 pin: POWER_GOOD

0000

T/C1 pin: TRIM

C2 pin: POWER_GOOD

T/C1 pin: TRIM

C2 pin: ON/OFF (Secondary)

3:0

0001

0010

Configuration*

* All EBDW without –P option

Bit

Description

Value

Meaning

7:5

Reserved

000

Reserved

ARA not functional, module remains at resistor programmed address when SMBLAERT

is asserted

ARA functional, module responds to ARA only, when SMBLAERT is asserted

0

1

4

ARA

T/C1 pin: ON/OFF (Secondary)

C2 pin: POWER_GOOD

3:0

0000

Configuration**

** All EBDW with –P option

April 15, 2013

Page 26

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

MFR_ C2_LOGIC [0xE1]

Command Code

Command support: full support (bits 0 and 1) as follows:

MFR_C2_LOGIC

8 bit unsigned (bit field)

Command

Format

Bit Position

Access

Function

7

r

6

r

5

r

4

r

3

r

2

r

1

r/ w

0

r/ w

logic

0

Reserved

0

On/Off(primary & secondary) combination

0

Default Value

0

Bit

Description

Value

Meaning

7:2

Reserved

000000

Reserved

0

1

0

1

Secondary side on/off pin state when mapped to either T/C1 or C2 is ignored

AND – Primary and Secondary side on/off

ON/OFF

Configuration

1

0

Negative Logic (Low Enable: Input < 0.8V wrt Vout(-)

Positive Logic (High Enable: Input > 2.0V wrt Vout(-)

Secondary Side

ON/OFF Logic

MFR_PGOOD_POLARITY [0xE2]

Command support: full support (bit 0) as follows:

Bit 0: 0 = Negative PGOOD logic (module PGOOD asserted when pin is LO, PGOOD de-asserted when pin is HI)

1 = Positive PGOOD logic (module PGOOD de-asserted when pin is LO, PGOOD asserted when pin is HI)

Command

Format

MFR_PGOOD_POLARITY

8 bit unsigned (bit field)

Bit Position

Access

Function

7

r

6

r

5

r

4

r

3

r

2

r

1

r

0

r/w

logic

1

Reserved

0

Default Value

0

MFR_MODULE_DATE_LOC_SN [0xF0]

Command support: read/write support for 12 byte block, lockout per MFR_DEVICE_TYPE

April 15, 2013

Page 27

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Barracuda PMBus Command Quick Reference Table

CMD

CODE

DATA

BYTES

DATA

UNITS

TRANSFER

TYPE

PMBUS CMD

OPERATION

DATA FORMAT

Bit field

DEFAULT VALUE

0x01

1

N/A

R/W byte

0x80

0x1D (Neg Logic)

0x1F (Pos Logic)

ON_OFF_CONFIG

0x02

1

Bit field

N/A

R/W byte

CLEAR_FAULTS

0x03

0x11

0x12

0x20

0x21

0x23

0x25

0x26

0x28

0x35

0x36

0x40

0x41

0

1

2

1

N/A

Volts

mV/A

v

Send byte

Read byte

R/W word

R/W byte

none

0x14

12.000V

MS

12.600V

11.400V

0

35.000V

33.000V

15.000V

0xB8

STORE_DEFAULT_ALL

RESTORE_DEFAULT_ALL

VOUT_MODE

VOUT_COMMAND

VOUT_CAL_OFFSET

VOUT_MARGIN_HIGH

VOUT_MARGIN_LOW

VOUT_DROOP

VIN_ON

VIN_OFF

VOUT_OV_FAULT_LIMIT

VOUT_OV_FAULT_RESPONSE

mode + exp

VOUT linear

VIN linear

VOUT linear

Bit field

v

N/A

23.000A (w/o -02 option)

28.000A (w -02 option)

IOUT_OC_FAULT_LIMIT

0x46

2

IOUT linear

Amps

R/W word

IOUT_OC_FAULT_RESPONSE

IOUT_OC_WARN_LIMIT

OT_FAULT_LIMIT

OT_FAULT_RESPONSE

OT_WARN_LIMIT

VIN_OV_FAULT_LIMIT

VIN_OV_FAULT_RESPONSE

POWER_GOOD_ON

POWER_GOOD_OFF

TON_DELAY

TON_RISE

STATUS_WORD

STATUS_VOUT

STATUS_IOUT

STATUS_INPUT

STATUS_TEMPERATURE

STATUS_CML

READ_VIN

READ_VOUT

0x47

0x4A

0x4F

0x50

0x51

0x55

0x56

0x5E

0x5F

0x60

0x61

0x79

0x7A

0x7B

0x7C

0x7D

0x7E

0x88

0x8B

0x8C

0x8D

0x98

0xD0

0xD1

0xD2

0xD3

0xD4

0xD6

0xD7

0xDB

0xE0

0xE1

0xE2

0xF0

1

2

1

2

1

2

1

2

1

2

1

12

Bit field

IOUT linear

TEMP linear

Bit field

TEMP linear

VIN linear

Bit field

VOUT linear

Time linear

Bit field

N/A

Amps

Deg. C

N/A

Deg. C

v

N/A

v

V

msec

N/A

v

R/W byte

R/W word

R/W byte

R/W word

R/W byte

R/W word

Read word

Read byte

Read word

Read byte

R/W word

Read byte

R/W byte

R/W block

0xF8

21.000A

140C

0xB8

125C

85V

0xC0

10.100V

8.500V

20ms

40ms

N/A

1.2

0x008E

0x2000

MS

Bit field

VIN linear

VOUT linear

IOUT linear

TEMP linear

Bit Field

v

READ_IOUT

READ_TEMP1

Amps

Deg. C

n/a

PMBUS_REVISION

MFR_DEVICE_TYPE

MFR_VOUT_READ_CAL_GAIN

MFR_VOUT_READ_CAL_OFF

MFR_VIN_READ_CAL_GAIN

MFR_VIN_READ_CAL_OFF

MFR_IOUT_CAL_GAIN

MFR_IOUT_CAL_OFFSET

MFR_FW_REV

MFR_C1_C2_ARA_CONFIG

MFR_ C2_LOGIC

MFR_PGOOD _POLARITY

MFR_MOD_DATE_LOC_SN

MS=Module specific

Custom

N/A

16 bit unsigned

VOUT linear

16 bit unsigned

VIN linear

16 bit unsigned

IOUT linear

8 bit unsigned

Bit field

0xMj.Mn.Bh.Bl

0x00

0x01

YYLLWW123456

Bit field

8 bit char

April 15, 2013

Page 28

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Mechanical Outline for EBDW020A0B Through-hole Module

Dimensions are in millimeters and [inches].

Tolerances: x.x mm  0.5 mm [x.xx in.  0.02 in.] (Unless otherwise indicated)

x.xx mm  0.25mm [x.xxx in  0.010 in.]

Top side label includes GE name, product designation and date code.

Top View*

Side View

*For optional pin lengths, see Table 2, Device Coding Scheme and Options

Bottom View

Number Pin Name

1

2

3

VIN(+)

ON/OFF

VIN(-)

4

5

6

7

8

9

VOUT(-)

SENSE(-)

TRIM/C1

SENSE(+)

VOUT(+)

C2

10

11

12

13

14

15

SIG_GND

DATA

SMBALERT

CLK

ADDR1

ADDR0

April 15, 2013

Page 29

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Mechanical Outline for EBDW020A0B–H (Baseplate version) Module

Dimensions are in millimeters and [inches].

Tolerances: x.x mm  0.5 mm [x.xx in.  0.02 in.] (Unless otherwise indicated)

x.xx mm  0.25 mm [x.xxx in  0.010 in.]

Top View

*Side label includes product designation, and data code.

*For optional pin lengths, see Table 2, Device Coding Scheme and Options

Side View

*

***Bottom label includes GE name, product designation, and data code

Bottom View***

Number Pin Name

1

2

3

VIN(+)

ON/OFF

VIN(-)

4

5

6

7

8

9

VOUT(-)

SENSE(-)

TRIM/C1

SENSE(+)

VOUT(+)

C2

10

11

12

13

14

15

SIG_GND

DATA

SMBALERT

CLK

ADDR1

ADDR0

April 15, 2013

Page 30

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Recommended Pad Layouts

Dimensions are in millimeters and [inches].

Tolerances: x.x mm  0.5 mm [x.xx in.  0.02 in.[ (unless otherwise indicated)

x.xx mm  0.25mm [x.xxx in  0.010 in.]

Through-Hole Modules

Number Pin Name

1

2

3

VIN(+)

ON/OFF

VIN(-)

4

5

6

7

8

9

VOUT(-)

SENSE(-)

TRIM/C1

SENSE(+)

VOUT(+)

C2

10

11

12

13

14

15

SIG_GND

DATA

SMBALERT

CLK

ADDR1

ADDR0

Hole and Pad diameter recommendations:

Pin Number

1, 2, 3, 5, 6, 7

4, 8

Hole Dia mm [in]

1.6 [.063]

Pad Dia mm [in]

2.1 [.083]

2.2 [.087]

3.2 [.126]

9, 10, 11, 12, 13, 14, 15

1.0 [.039]

1.5 [.059]

April 15, 2013

Page 31

Data Sheet

GE

EBDW020A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 20.0A, 240W Output

Ordering Information

Please contact your GE Sales Representative for pricing, availability and optional features.

Table 1. Device Codes

Output

Voltage

12V

Output

Current

20A

Connector

Type

Product codes

Input Voltage

Efficiency

Comcodes

CC109167482

CC109167490

150023769

150029356

150027293

EBDW020A0B41Z

94.8%

Through hole

48V (3675Vdc)

EBDW020A0B41-HZ

EBDW020A0B641-HZ

EBDW020A0B841-HZ

EBDW020A0B641-02HZ

EBDW020A0B641-PHZ

CC109170552

Table 2. Device Options

Contact Us

For more information, call us at

USA/Canada:

+1 888 546 3243, or +1 972 244 9288

Asia-Pacific:

+86.021.54279977*808

Europe, Middle-East and Africa:

+49.89.878067-280

India:

+91.80.28411633

www.ge.com/powerelectronics

April 15, 2013

Version 1.25


型号：	EBDW020A0B
厂家：	LINEAGE POWER CORPORATION
描述：	BARRACUDA SERIESâ¢ 梭子鱼系列？ ¢
文件：	总32页 (文件大小：1659K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

EBDW020A0B [LINEAGEPOWER]

相关型号：

EBDW020A0B41-HZ

EBDW020A0B41Z

EBDW020A0B641-HZ

EBDW020A0B641-PHZ

EBDW025A0B

EBDW025A0B41Z

EBDW025A0B641HZ

EBDW025A0B641PHZ

EBE02A

EBE02B

EBE02H

EBE02J