Q48SK12448NNFB [DELTA]

600W DC/DC Power Modules;


型号：	Q48SK12448NNFB
厂家：	DELTA ELECTRONICS, INC.
描述：	600W DC/DC Power Modules
文件：	总10页 (文件大小：761K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Q48SK12448NNFB

600W DC/DC Power Modules

FEATURES



High efficiency:



96.2% @ 12V/50A out

Max output power is up to 800 watts(4 ms)

size(with heat spreader):

58.4 x 36.8 x 12.9mm (2.30”x1.45”x0.51”)

Standard footprint



Pre-bias startup

No minimum load required

External with 450uF minimum capacitance

Fixed frequency operation

Input UVLO, output OCP, OVP, OTP

Hiccup output over current protection (OCP)

Latch output over voltage protection (OVP)

Auto recovery OTP and input UVLO

1500V isolation and function insulation

ISO 9001, TL 9000, ISO 14001, QS 9000, OHSAS

18001 certified manufacturing facility

UL/cUL 60950 (US & Canada) certification



Q48SK12448NNFB, For 600W Quarter

Brick DC/DC Power Modules: 46~60V

in, 12V/ 50A out

OPTIONS



OVP hiccup or latch mode

The Delphi Module Q48SK12448NNFB, Quarter Brick,

46~60V input, single output, isolated DC/DC converter is the latest

offering from a world leader in power system and technology and

manufacturing ― Delta Electronics, Inc. This product provides up

to 600 watts of power in an industry standard footprint and pin out.

With creative design technology and optimization of component

placement, these converters possess outstanding electrical and

thermal performances, as well as extremely high reliability under

highly stressful operating conditions. The Q48SK12448NNFB

offers more than 96.2% high efficiency at 50A load. The

Q48SK12448NNFB is fully protected from abnormal input/output

voltage, current, and temperature conditions and meets all safety

requirements with basic insulation.

APPLICATIONS



Telecom / Datacom

Wireless Networks

Optical Network Equipment

Server and Data Storage

Industrial / Testing Equipment

DATASHEET

DS_Q48SK12448NNFB_10222015

E-mail: dcdc@deltaww.com

http://www.deltaww.com/dcdc

TECHNICAL SPECIFICATIONS

(T_A=25°C, airflow rate=300 LFM, V_in=54Vdc, nominal Vout unless otherwise noted;

PARAMETER

NOTES and CONDITIONS

Q48SK12448NNFB

Min.

Typ.

Max.

Units

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Continuous

Operating Ambient temperature

Storage Temperature

125

1500

Vdc

°C

Vdc

-40

-55

Input/Output Isolation Voltage

Min time interval between trun off to next turn on

INPUT CHARACTERISTICS

Operating Input Voltage

Input Under-Voltage Lockout

Turn-On Voltage Threshold

Turn-Off Voltage Threshold

Lockout Hysteresis Voltage

Maximum Input Current

No-Load Input Current

Vdc

50A Load, 46Vin

800 watts Load for 4ms, 46Vin

Vin=54V, Io=0A

19.5

210

160

A²s

Off Converter Input Current

Vin=54V, Io=0A

Inrush Current (I²t)

Input Reflected-Ripple Current

OUTPUT CHARACTERISTICS

Output Voltage Set Point

Output Voltage Regulation

Over Load

Over Line

Over Temperature

Total Output Voltage Range

Output Voltage Ripple and Noise

Peak-to-Peak

P-P thru 12µH inductor, 5Hz to 20MHz

Vin=54V, Io=0, Tc=25°C

250

11.9

11.4

12.1

Vdc

Vin=54V, Io=Io min to Io max

Vin=46V to 60V, Io=Io min

Vin=54V, Tc= min to max case temperatrue

over sample load, line and temperature

20MHz bandwidth

Vdc

130

12.6

Full Load, 1µF ceramic,10µF tantalum,450uF Oscon

250

350

RMS

Operating Output Current Range

Output DC Current-Limit Inception

Start afford load time, From On/Off Control

DYNAMIC CHARACTERISTICS

800 watts Load for 4ms

Output Voltage 10% Low

, 1µF ceramic,10µF tantalum,450uF Oscon

0.1A/µs

Output Voltage Current Transient

Positive Step Change in Output Current

Negative Step Change in Output Current

Settling Time (within 1% Vout nominal)

Turn-On Transient

50% to 75% of full load

75% to 50% of full load

200

350

450

µs

Vin slew rate: 10V/mS

Start-Up Time, From On/Off Control

Start-Up Time, From Input

Maximum Output Capacitance

EFFICIENCY

120

8900

µF

Low ESR CAP (OSCON), 100% load;

100% Load

60% Load

Vin=54V

96.2

96.0

96.7

96.5

ISOLATION CHARACTERISTICS

Input to Output

Isolation Resistance

Isolation Capacitance

FEATURE CHARACTERISTICS

Switching Frequency

1500

Vdc

MΩ

1000

180

kHz

ON/OFF Control, Negative Remote On/Off logic

Logic Low (Module On)

Von/off at Ion/off=1.0mA

Von/off at Ion/off=0.0 µA

Ion/off at Von/off=0.0V

Logic High, Von/off=15V

Over full temp range

0.8

Vdc

Logic High (Module Off)

ON/OFF Current (for both remote on/off logic)

Leakage Current (for both remote on/off logic)

Output Over-Voltage Protection

GENERAL SPECIFICATIONS

MTBF

Io=80% of Io, max; Ta=25°C

2.1

M hours

grams

Weight(with heat spreader)

74.5

125

130

Refer to Figure18 for Hot spot location

(54Vin,80%Io, 200LFM,Airflow from Vin+ to Vin-)

Over-Temperature Shutdown (Hot Spot)

°C

Over-Temperature Shutdown (NTC Resistor)

Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spot’s temperature is just for reference.

DS_Q48SK12448NNFB_10222015

E-mail: dcdc@deltaww.com

http://www.deltaww.com/dcdc

ELECTRICAL CHARACTERISTICS CURVES

Figure 1: Efficiency vs. load current for 46V, 54V, and 60V

Figure 2: Power dissipation vs. load current for 46V, 54V, and

input voltage at 25°C.

60V input voltage at 25°C.

Figure 3: full load input characteristics at room temperature.

DS_Q48SK12448NNFB_10222015

E-mail: dcdc@deltaww.com

http://www.deltaww.com/dcdc

ELECTRICAL CHARACTERISTICS CURVES

For Negative Remote On/Off Logic

Figure 4: Turn-on transient at zero load current) (20ms/div).

Figure 5: Turn-on transient at full load current (20 ms/div). Top

Top Trace: Vout; 5V/div; Bottom Trace: ON/OFF input: 10V/div.

Trace: Vout: 5V/div; Bottom Trace: ON/OFF input: 10V/div.

For Input Voltage Start up

Figure 6: Turn-on transient at zero load current (20 ms/div).

Figure 7: Turn-on transient at full load current (20 ms/div). Top

Top Trace: Vout; 5V/div; Bottom Trace: input voltage: 50V/div.

Trace: Vout; 5V/div; Bottom Trace: input voltage: 50V/div.

DS_Q48SK12448NNFB_10222015

E-mail: dcdc@deltaww.com

http://www.deltaww.com/dcdc

ELECTRICAL CHARACTERISTICS CURVES

Figure 8: Output voltage response to step-change in load

current (75%-50% of full load; di/dt = 0.1A/µs). Load cap: 10µF,

tantalum capacitor ,1µF ceramic capacitor and 450uF Oscon

capacitor. Top Trace: Vout; 200mV/div; Bottom Trace: output

current: 20A/div, Time: 500us/div

Figure 9: Output voltage response to step-change in load

current (50%-75% of full load; di/dt = 0.1A/µs). Load cap: 10µF,

tantalum capacitor ,1µF ceramic capacitor and 450uF Oscon

capacitor. Top Trace: Vout; 200mV/div; Bottom Trace: output

current: 20A/div, Time: 500us /div

Figure 10: Test set-up diagram showing measurement points

for Input Terminal Ripple Current and Input Reflected Ripple

Current.

Figure 11: Input Terminal Ripple Current, i_c, at max output

current and nominal input voltage with 12µH source impedance

and 100µF electrolytic capacitor (0.5 A/div，2us/div).

Note: Measured input reflected-ripple current with a simulated

source Inductance (L_TEST) of 12 μH. Capacitor Cs offset

possible battery impedance. Measure current as shown above.

DS_Q48SK12448NNFB_10222015

E-mail: dcdc@deltaww.com

http://www.deltaww.com/dcdc

ELECTRICAL CHARACTERISTICS CURVES

Figure 12: Input reflected ripple current, i_s, through a 12µH

source inductor at nominal input voltage and max load current

(20mA/div，2us/div).

Figure 13: Output voltage noise and ripple measurement test

setup.

Figure 14: Output voltage ripple at nominal input voltage and

max load current (50 mV/div, 20ms/div)

Figure 15: Output voltage vs. load current showing typical

current limit curves and converter shutdown points.

Load capacitance: 10µF tantalum capacitor ,1µF ceramic

capacitor and 450uF Oscon capacitor. Bandwidth: 20 MHz.

DS_Q48SK12448NNFB_10222015

E-mail: dcdc@deltaww.com

http://www.deltaww.com/dcdc

FEATURES DESCRIPTIONS

DESIGN CONSIDERATIONS

Over-Current Protection

Input Source Impedance

The modules include an internal output over-current

protection circuit. If the output current exceeds the OCP

set point, the modules will shut down (hiccup mode).The

hiccup time will last 2s. The modules will try to restart

after shutdown. If the overload condition still exists, the

module will shut down again. This restart trial will

continue until the overload condition is corrected.

The impedance of the input source connecting to the

DC/DC power modules will interact with the modules

and affect the stability. A low ac-impedance input source

is recommended. If the source inductance is more than

a few μH, we advise 100μF electrolytic capacitor (ESR <

0.7 Ω at 100 kHz) mounted close to the input of the

module to improve the stability.

Over-Voltage Protection

Layout and EMC Considerations

The modules include an internal output over-voltage

protection circuit, which monitors the voltage on the

output terminals. If this voltage exceeds the

over-voltage set point the module will shut down (latch

mode) and keep not restart again until module restart up

by input voltage.

Delta’s DC/DC power modules are designed to operate

in a wide variety of systems and applications. For

design assistance with EMC compliance and related

PWB layout issues, please contact Delta’s technical

support team. An external input filter module is available

for easier EMC compliance design. Application notes

to assist designers in addressing these issues are

pending release.

If hiccup mode is needed for OVP, please contact with

Delta.

Safety Considerations

Over-Temperature Protection

This power module is not internally fused. To achieve

optimum safety and system protection, an input line

fuse is highly recommended. The safety agencies

require a normal-blow fuse with 60A maximum rating to

be installed in the ungrounded lead. A lower rated fuse

can be used based on the maximum inrush transient

energy and maximum input current.

The over-temperature protection consists of circuitry

that provides protection from thermal damage. If the

temperature exceeds the over-temperature threshold

the module will shut down. The module will restart after

2s .

Remote On/Off

Soldering and Cleaning Considerations

The remote on/off feature on the module is negative

logic. Negative logic turns the module on during a logic

low and off during a logic high. If the remote on/off

feature is not used, please short the on/off pin to Vi (-).

Post solder cleaning is usually the final board assembly

process before the board or system undergoes electrical

testing. Inadequate cleaning and/or drying may lower the

reliability of a power module and severely affect the

finished circuit board assembly test. Adequate cleaning

and/or drying is especially important for un-encapsulated

and/or open frame type power modules. For assistance

on appropriate soldering and cleaning procedures,

please contact Delta’s technical support team.

Remote on/off can be controlled by an external switch

between the on/off terminal and the Vi (-) terminal. The

switch can be an open collector or open drain.

Figure 16: Remote on/off implementation

DS_Q48SK12448NNFB_10222015

E-mail: dcdc@deltaww.com

http://www.deltaww.com/dcdc

THERMAL CONSIDERATIONS

THERMAL CURVES

(WITH HEAT SPREADER)

Thermal management is an important part of the system

design. To ensure proper, reliable operation, sufficient

cooling of the power module is needed over the entire

temperature range of the module. Convection cooling is

usually the dominant mode of heat transfer.

AIRFLOW

Hence, the choice of equipment to characterize the

thermal performance of the power module is a wind

tunnel.

Thermal Testing Setup

Delta’s DC/DC power modules are characterized in

heated vertical wind tunnels that simulate the thermal

environments encountered in most electronics

equipment. This type of equipment commonly uses

vertically mounted circuit cards in cabinet racks in which

the power modules are mounted.

Figure 18: * Hot spot temperature measured point.

The allowed maximum hot spot temperature is defined at 110℃

The following figure shows the wind tunnel

characterization setup. The power module is mounted

on a 185mmX185mm,70μm (2Oz),6 layers test board

and is vertically positioned within the wind tunnel. The

space between the neighboring PWB and the top of the

power module is constantly kept at 6.35mm (0.25’’).

Q48SK12448NNFB Output Current vs. Ambient Temperature and Air Velocity

Output Current(A)

@Vin = 54V (Transverse Orientation,With Heat Spreader)

600LFM

Natural

Convection

PWB

MODULE

FANCING PWB

100LFM

200LFM

300LFM

400LFM

500LFM

AIR VELOCITY

AND AMBIENT

TEMPERATURE

SURED BELOW

THE MODULE

Ambient Temperature (℃)

Figure 19: Output Current vs. ambient temperature and air

velocity @ V_in=54V(Transverse Orientation,With Heat Spreader,

Airflow from Vin+ to Vin-)

AIR FLOW

Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)

Figure 17: Wind tunnel test setup

Thermal Derating

Heat can be removed by increasing airflow over the

module. To enhance system reliability, the power module

should always be operated below the maximum

operating temperature. If the temperature exceeds the

maximum module temperature, reliability of the unit may

be affected.

DS_Q48SK12448NNFB_10222015

E-mail: dcdc@deltaww.com

http://www.deltaww.com/dcdc

MECHANICAL DRAWING

Pin No.

Name

+Vin

ON/OFF

-Vin

-Vout

+Vout

Function

Positive input voltage

Remote ON/OFF

Negative input voltage

Negative output voltage

positive output voltage

Pin Specification:

Pins 1,2,3

Pins 4,5

1.00mm (0.040”) diameter

1.50mm (0.060”) diameter

All pins are copper with matte Tin plating and Nickel under plating

DS_Q48SK12448NNFB_10222015

E-mail: dcdc@deltaww.com

http://www.deltaww.com/dcdc

RECOMMENDED LAYOUT

PART NUMBERING SYSTEM

124

Output On/Off

Logic

Form

Factor

Input

Voltage

Number Product

Output

Voltage Current

Length

Option Code

Series

Outputs

Q - QB

48 -

S - Single

K - high

power

124 - 12.0V 48 - 50A N -

negative

N - 0.145” F- RoHS 6/6

Y - 0.197” (Lead Free)

B - Heat spreader

46~60V

MODEL LIST

Efficiency

54Vin, 12Vdc @ 50A

Model Name

Packaging

Input Voltage

Output Voltage

Output Current

Q48SK12448NNFB

Q48SK12448NYFB

Through hole

46~60V

12V

50A

96.2%

* For modules with through-hole pins and the optional heatspreader, they are intended for wave soldering

assembly onto system boards; please do not subject such modules through reflow temperature profile.

CONTACT: www.deltaww.com/dcdc Email: dcdc@deltaww.com

USA:

Europe:

Asia & the rest of world:

Telephone:

Telephone: +31-20-655-0967

Fax: +31-20-655-0999

Telephone: +886 3 4526107 x6220~6224

Fax: +886 3 4513485

East Coast: 978-656-3993

West Coast: 510-668-5100

Fax: (978) 656 3964

WARRANTY

Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available

upon request from Delta.

Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by

Delta for its use, nor for any infringements of patents or other rights of third parties, which may result from its use.

No license is granted by implication or otherwise under any patent or patent rights of Delta. Delta reserves the

right to revise these specifications at any time, without notice.

DS_Q48SK12448NNFB_10222015

E-mail: dcdc@deltaww.com

http://www.deltaww.com/dcdc

P10

Q48SK12448NNFB [DELTA]

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