ATW2812D/HB-SLV [INFINEON]

ADVANCED ANALOG HYBRID-HIGH RELIABILITY DC/DC CONVERTERS; 先进的模拟混合高可靠性DC / DC转换器


型号：	ATW2812D/HB-SLV
厂家：	Infineon
描述：	ADVANCED ANALOG HYBRID-HIGH RELIABILITY DC/DC CONVERTERS 先进的模拟混合高可靠性DC / DC转换器转换器局域网
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PD - 94557

ATW28XXD SERIES

28V Input, Dual Output

ADVANCED ANALOG

HYBRID-HIGH RELIABILITY

DC/DC CONVERTERS

Description

The ATW28XXD Series of DC/DC converters feature

high power density and an extended temperature range

for use in military and industrial applications. Designed

to MIL-STD-704 input requirements, these devices op-

erate with a nominal 28 VDC inputs with ±12V and ±15V

dual outputs to satisfy a wide range of requirements.

The circuit design incorporates a pulse width modu-

lated push-pull topology operating in the feed-forward

mode at a nominal switching frequency of 270KHz. Input

to output isolation is achieved through the use of trans-

formers in the forward and feedback circuits.

ATW

Features

n 18 to 40 VDC Input Range (28 VDC Nominal)

±12V and ±15V Outputs Available

n Indefinite Short Circuit and Overload

Protection

The advanced feedback design provides fast loop re- n 22.8 W/in³Power Density

sponse for superior line and load transient character- n 30 W Output Power

istics and offers greater reliability and radiation toler- n Fast Loop Response for Superior Transient

ance than devices incorporating optical elements in

the feedback circuits.

Characteristics

n Operating Temperature Range from -55°C to

+125°C Available

n Popular Industry Standard Pin-Out

n Resistance Seam Welded Case for Superior

Long Term Hermeticity

Three standard temperature grades are offered. Refer

to Part Number section for more severe environments.

Manufactured in a facility fully qualified to MIL-PRF-

38534, these converters are available in four screen-

ing grades to satisfy a wide range of requirements. The

CH grade is fully compliant to the requirements of MIL-

PRF-38534 for class H. The HB grade is processed

and screened to the class H requirement, but may not

necessarily meet all of the other MIL-PRF-38534 re-

quirements, e.g., element evaluation and Periodic In-

spection (PI) not required. Both grades are tested to

meet the complete group “A” test specification over the

full military temperature range without output power

deration. Two grades with a more limited screening

are also available for use in less demanding applica-

tions. Variations in electrical, mechanical and screen-

ing can be accommodated. Contact Advanced Analog

for special requirements.

n Efficiencies up to 85%

n Shutdown from External Signal

n Full Military Screening

n 200,000 hour MTBF at 85°C

MIL-PRF-38534 Compliant Versions

Available

www.irf.com

10/24/02

ATW28XXD Series

Specifications

ATW2812D

ABSOLUTE MAXIMUM RATINGS

Input Voltage

-0.5V to 50V

Soldering Temperature

Case Temperature

300°C for 10 seconds

Operating -55°C to +125°C

Storage -65°C to +135°C

Table I. Electrical Performance Characteristics

Test

Symbol

Conditions

-55°C Tc +125°C

Group A

Subgroups

Device

Types

Limits

Unit

≤

Vin = 28 Vdc ±5%, C_L= 0

Unless otherwise specified

Min

Max

Output voltage

V_OUT

I_OUT= 0

2,3

1,2,3

All

11.88

11.76

250

12.12

12.24

2250

Output current ^{1, 2}

Output ripple voltage ³

Line regulation ⁴

I_OUT

V_RIP

V_IN= 18, 28, and 40 V dc,

each output

V_IN= 18, 28, and 40 V dc,

B.W. = 20Hz to 2MHz

V_IN= 18, 28, and 40 V dc,

Iout = 0,1250, and 2500mA

All

mVp-p

1,2,3

VR_LINE

2,3

1,2,3

120

Load regulation ⁴

VR_LOAD

V_IN= 18, 28, and 40 V dc,

I_OUT= 0, 1250, and 2500mA

10% to 90% load change

I_OUT= 0, inhibit (pin 8)

tied to input return (pin 10)

I_OUT= 0,inhibit (pin 8)= open

I_OUT= 2500mA

All

Cross regulation ⁵

Input current

VR_CROSS

I_IN

1,2,3

All

3.5

Input ripple current ^{3, 4}

Efficiency ⁴

I_RIP

1,2,3

All

mAp-p

B.W. = 20Hz to 2MHz

I_OUT= 2500mA

E_FF

T = +25 C

Isolation

ISO

C_L

Input to output or any pin

All

100

Ω

to case (except pin 7) at

500 V dc Tc = +25°C

No effect on dc

Capacitive load ^{6, 7}

200

µF

performance, Tc = +25°C,

total for both outputs

Overload, T = +25 C⁸

Power dissipation

load fault

P_D

Short circuit, T = +25 C

I_OUT= 2500mA

Switching frequency ⁴

F_S

4,5,6

All

250

275

300

270

300

+400

KHz

Output response to step

transient load

VO_TLOAD

1250mA to/from 2500mA

4,5,6

-400

mV pk

changes ^{4, 9}

0mA to/from 2500mA

1250mA to/from 2500mA

4,5,6

All

-800

+800

Recovery time step

transient load

TT_LOAD

µs

changes ^{4, 9, 10}

0mA to/from 1250mA

1250mA to/from 0mA

4,5,6

All

500

For Notes to Specifications, refer to page 3

www.irf.com

ATW28XXD Series

ATW2812D

Table I. Electrical Performance Characteristics - continued

Test

Symbol

Conditions

-55°C Tc +125°C

Group A

Subgroups

Device

Types

Limits

Unit

≤

Vin = 28 Vdc ±5%, C_L= 0

unless otherwise specified

Min

Max

Output response

transient step line

changes ^{4, 7, 11}

VO_TLINE

TT_LINE

Input step from/to 18 to 40

Vdc, I_OUT= 2500mA

4,5,6

All

-800

+800

mV pk

Recovery time

transient step line

change ^{4, 7, 10, 11}

Input step from/to 18 to 40

Vdc, I_OUT= 2500mA

4000

Turn on overshoot ⁴

Turn on delay ^{4, 12}

VTon_OS

Ton_D

I_OUT= 0 and 2500mA

4,5,6

All

750

mV pk

Load fault recovery ⁷

Weight

Tr_LF

4,5,6

All

grams

Flange

Notes to Specifications

Parameter guaranteed by line, load and cross regulation tests.

Up to 90% of full power is available from either output provided the total output does not exceed 30W.

Bandwidth guaranteed by design. Tested for 20KHz to 2MHz.

Load current split equally between +V_OUTand –V_OUT

Three-watt load on output under test, 3 watt to 27 watt load change on other output.

Capacitive load may be any value from 0 to the maximum limit without compromising dc performance.

A capacitive load in excess of the maximum limit will not disturb loop stability but may interfere with the

operation of the load fault detection circuitry, appearing as a short circuit during turn-on.

Parameter shall be tested as part of design characterization and after design or process changes.

Thereafter, parameters shall be guaranteed to the limits specified in Table I.

An overload is that condition with a load in excess of the rated load but less than that necessary to

trigger the short circuit protection and is the condition of maximum power dissipation.

Load step transition time between 2 and 10 microseconds.

10 Recovery time is measured from the initiation of the transient to where V_OUThas returned to within ±1

percent of V_OUTat 50 percent load.

11 Input step transition time between 2 and 10 microseconds.

12 Turn-on delay time measurement is for either a step application of power at the input or the removal of

ground signal from the inhibit pin (pin 8) while power is applied to the input.

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ATW28XXD Series

Specifications

ATW2815D

ABSOLUTE MAXIMUM RATINGS

Input Voltage

-0.5V to 50V

Soldering Temperature

Case Temperature

300°C for 10 seconds

Operating -55°C to +125°C

Storage -65°C to +135°C

Table II. Electrical Performance Characteristics

Test

Symbol

Conditions

-55°C Tc +125°C

Group A

Subgroups

Device

Types

Limits

Unit

≤

Vin = 28 Vdc ±5%, C_L= 0

Unless otherwise specified

Min

Max

Output voltage

V_OUT

V_IN= 18, 28, and 40 Vdc

I_OUT= 0

V_IN= 18, 28, and 40 V dc

2,3

1,2,3

All

V_DC

mA_DC

mVp-p

14.85

14.70

0.200

15.15

15.30

2000

Output current ^{11, 13}

I_OUT

Output ripple voltage ⁸

V_RIP

V_IN= 18, 28, and 40 V dc,

B.W. = DC to MHz

V_IN= 18, 28, 40 Vdc

V_IN= 18, 28, and 40 V dc,

Iout = 0, 1000, and 2000mA

Output Power ^{4, 11}

Line regulation ^{9, 10}

P_OUT

VR_LINE

1,2,3

All

2,3

1,2,3

All

150

Load regulation ^9,

VR_LOAD

I_IN

V_IN= 18, 28, and 40 V dc,

I_OUT= 0, 1000, and 2000mA

I_OUT= 0, inhibit (pin 8)

I_OUT= 0, inhibit (pin 8) = open

I_OUT= 2000mA

Input current

1,2,3

All

mADC

mAp-p

Input ripple current

Efficiency

I_RIP

E_FF

ISO

100

I_OUT= 2500mA T = 25 C

Isolation

Input to output or any pin

Ω

to case (except pin 8) at

500V dc Tc = 25°C

No effect on dc performance,

Tc = 25°C

Capacitive load ^{6, 12}

C_L

P_D

All

500

µF

Overload, T = +25 C ³

Power dissipation

load fault

All

KHz

mV pk

Short circuit, T = +25 C

I_OUT= 2000mA

Switching frequency

F_S

1,2,3

4,5,6

237

230

250

-300

263

245

265

+300

Output response to step

transient

VO_TLOAD

50% load to/from 100% load

load changes ^{7, 9, 10}

No load to 100% load

100% load to no load

50% load to/from 100% load

4,5,6

All

-800

+800

-800

+800

mV pk

µs

Recovery time step

TT_LOAD

transient load changes^{1, 7}

No load to 50% load

50% load to no load

4,5,6

All

500

µs

For Notes to Specifications, refer to page 5

www.irf.com

ATW28XXD Series

ATW2815D

Table II. Electrical Performance Characteristics - continued

Test

Symbol

Conditions

-55°C Tc +125°C

Group A

Subgroups

Device

Types

Limits

Unit

≤

Vin = 28 Vdc ±5%, C_L= 0

unless otherwise specified

Min

Max

Output response

transient step line

changes ^{5, 12}

VO_TLINE

Input step from/to 18 to

40VDC

4,5,6

All

+180

mV pk

Input step from 40 to18 VDC

Input step from/to 18 to 40

VDC

4,5,6

All

-600

400

Recovery time

transient step line

changes ^{1. 5, 12}

TT_LINE

Input step from 40 to 18 VDC

I_OUT= 0 and 2000mA

4,5,6

All

400

750

Turn on overshoot

Turn on delay ²

VTon_OS

Ton_D

mV pk

Load fault recovery ¹²

Weight

Tr_LF

V_IN= 18 to 40 VDC

Flange

4,5,6

All

grams

Notes to Specifications

Recovery time is measured from the initiation of the transient to where V_OUThas returned to within ±1% of V_OUTat 50% load.

Turn-on delay time measurement is for either a step application of power at the input or the removal of a ground signal from the

inhibit pin (pin 8) while power is applied to the input.

An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit

protection and is the condition of maximum power dissipation.

Above +125°C case, derate output power linearly to 0 at +135°C case.

Input step transition time between 2 and 10 microseconds.

Capacitive load may be any value from 0 to the maximum limit without compromising DC performance. A capacitive load in

excess of the maximum limit will not disturb loop stability but will interfere with the operation of the load fault detection circuitry,

appearing as a short circuit during turn on.

Load step transition time between 2 and 10 microseconds.

Bandwidth guaranteed by design. Tested for 20KHz to 2MHz.

Load current split equally between +V_OUTand –V_OUT

10 When operating with unbalanced loads, at least 25% of the load must be on the positive output to maintain regulation.

11 Parameter guaranteed by line and load regulation tests.

12 Parameter shall be tested as part of design characterization and after design or process changes. Thereafter parameters shall be

guaranteed to the limits specified in Table II.

13 Up to 90% of full power is available from either output provided the total output does not exceed 30 watts.

www.irf.com

ATW28XXD Series

ATW28XXD Block Diagram

+V out

R eturn

-Vout

E M I

Filter

+Input

Drive 1

Drive 2

E nable

Pulse W idth

M odulator

Error Amp

Reference

S ync

Input

R eturn

Application Information

Inhibit Function

Connecting the inhibit input (Pin 8) to input common (Pin 10)

will cause the converter to shut down. It is recommended

that the inhibit pin be driven by an open collector device

capable of sinking at least 400µA of current. The open cir-

cuit voltage of the inhibit input is 11.5 ±1 VDC.

The user should be aware that the synchronization sys-

tem is fail-safe; that is, the slaves will continue operating

should the master frequency be interrupted for any rea-

son. The layout must be such that the synchronization

output (pin 2) of the master device is connected to the

synchronization input (pin 2) of each slave device. It is

advisable to keep this run short to minimize the possibil-

ity of radiating the 250KHz switching frequency.

EMI Filter

An optional external EMI filter (AFC461) is available that will

reduce the input ripple current to levels below the limits

imposed by MIL-STD-461B CEO3.

The appropriate parts must be ordered to utilize this fea-

ture. After selecting the converters required for the sys-

tem, a ‘MSTR’ suffix is added for the master converter

part number and a ‘SLV’ suffix is added for slave part

number. See Part Number section.

Device Synchronization

Whenever multiple DC/DC converters are utilized in a single

system, significant low frequency noise may be generated

due to the slight differences in the switching frequencies of

the converters (beat frequency noise). Because of the low

frequency nature of this noise (typically less than 10KHz), it

is difficult to filter out and may interfere with proper operation

of sensitive systems (communications, radar or telemetry).

Advanced Analog offers an option, which allows synchroni-

zation of multiple AHE/ATW type converters, thus eliminat-

ing this type of noise.

Typical Synchronization Connection

Output

Return

Output

Return

A FC 461

A FV461

Case

A TW 28xxS

M STR

Return

S ystem

B us

Output

Return

Output

A TW 28xxD

or O ther

C om patable

SLV

To take advantage of this capability, the system designer

must assign one of the converters as the master. Then, by

definition, the remaining converters become slaves and will

operate at the masters’ switching frequency.

Case

Return

Output

Return

Case

A TW 28xxD

SLV

Output

Return

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ATW28XXD Series

ATW28XXD Case Outlines

1.000

0.05

0.040 D

0.26 L Pins

2.700

Max

4 X 0.400

=1.600

2.360

1.95

0.500

Max

1.350

Max

Part Numbering

ATW 28 15 D / CH - MSTR

Pin Designation

Pin No.

Designation

Sync Option

M STR = M aster

SLV = Slave

M odel

Positive Input

Input Voltage

O m it for Standard

N/C Standard or

Sync. ( Optional )

28 = 28V Nom inal

Screening

Output Voltage

Single - 05, 12, 15VDC

Dual - 12 = ±12V, 15 = ±15V

^–, ES, HB, C H

Outputs

Positive Output

Output Return

Negative Output

N/C

S = Single

D = Dual

Case Ground

Enable

Inhibit

N/C

Input Return

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ATW28XXD Series

Available Screening Levels and ProcessVariations for ATW28XXD Series

Requirement

MIL-STD-883

Method

Suffix

Temperature

Range

-20 to +85 C

-55 C to +125 C

° °

-55°C

Element

MIL-PRF-38534

Evaluation

Internal Visual

Temperature

Cycle

2017

1010, Cond C

Yes

Cond A

Yes

Constant

Acceleration

Burn-in

2001, Cond A

1015

500g

5,000g

48hrs @ 85 C

48hrs @ 105 C

160hrs @ 125 C

Final Electrical MIL-PRF-38534

25 C

-55, +25, +125 C

(Group A)

Seal, Fine &

Gross

& Specification

1014

Yes

External

Visual

2009

* Per Commercial Standards

Available Standard Military Drawing (SMD) Cross Reference

Standardized

Military Drawing

Vendor

CAGE

Number

Vendor

Similar

Code

5962-9210901HZX

5962-9210902HZX

5962-9210903HZX

5962-9161301HZX

5962-9161302HZX

5962-9161303HZX

52467

ATW2812D/CH

ATW2812D/CH-SLV

ATW2812D/CH-MSTR

ATW2815D/CH

ATW2815D/CH-SLV

ATW2815D/CH-MSTR

WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 322 3331

ADVANCED ANALOG: 2270 Martin Av., Santa Clara, California 95050, Tel: (408) 727-0500

Visit us at www.irf.com for sales contact information.

Data and specifications subject to change without notice. 10/02

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ATW2812D/HB-SLV [INFINEON]

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