ATW2805S/CH-MSTR

ATW28XXD IRF | Alldatasheet

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28V Input, Dual Output The advanced feedback design provides fast loop re- sponse for superior line and load transient character- istics and offers greater reliability and radiation toler- ance than devices incorporating optical elements in the feedback circuits. 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. /G20/G6E MIL-PRF-38534 Compliant Versions Available Three standard temperature grades are offered. Refer to Part Number section for more severe environments. 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. PD - 94557

2 www.irf.com ATW28XXD Series Specifications For Notes to Specifications, refer to page 3 Table I. Electrical Performance Characteristics ATW2812D Test Symbol Conditions -55°C ≤Tc ≤+125°C Vin = 28 Vdc ±5%, CL = 0 Unless otherwise specified Group A Subgroups Device Types Limits Unit Min Max Output voltage V OUT I OUT = 0 1 All ±11.88 ±12.12 V 2,3 ±11.76 ±12.24 Output current 1, 2 IOUT V IN = 18, 28, and 40 V dc, each output 1,2,3 All 250 2250 mA Output ripple voltage VRIP V IN = 18, 28, and 40 V dc, B.W. = 20Hz to 2MHz 1,2,3 All 85 mVp-p Line regulation VR LINE V IN = 18, 28, and 40 V dc, Iout = 0,1250, and 2500mA

1 All 30 mV

2,3 60 Load regulation VR LOAD V IN = 18, 28, and 40 V dc, IOUT = 0, 1250, and 2500mA 1,2,3 All 120 mV Cross regulation VR CROSS 10% to 90% load change 1,2,3 All 3.5 % Input current I IN I OUT = 0, inhibit (pin 8) tied to input return (pin 10) 1,2,3 All 18 mA I OUT = 0,inhibit (pin 8)= open 50 Input ripple current 3, 4 IRIP I OUT = 2500mA B.W. = 20Hz to 2MHz 1,2,3 All 50 mAp-p Efficiency EFF I OUT = 2500mA 1 All 80 % TC = +25°C Isolation ISO Input to output or any pin to case (except pin 7) at

500 V dc Tc = +25°C

1 All 100 M Ω

6, 7 C L No effect on dc performance, Tc = +25°C, total for both outputs

4 All 200 µF

PD Overload, TC = +25°C

1 All 12

W Short circuit, TC = +25°C 9 Switching frequency FS I OUT = 2500mA 4,5,6 01 250 300 KHz 02 250 270 03 275 300 Output response to step transient load changes 4, 9 VO TLOAD 1250mA to/from 2500mA 4,5,6 All -400 +400 mV pk 0mA to/from 2500mA 4,5,6 All -800 +800 Recovery time step transient load changes 4, 9, 10 TTLOAD 1250mA to/from 2500mA 4,5,6 All 70 µs 0mA to/from 1250mA 4,5,6 All 500 1250mA to/from 0mA 4,5,6 All 5 ms Input Voltage -0.5V to 50V Soldering Temperature 300°C for 10 seconds Case Temperature Operating -55°C to +125°C Storage -65°C to +135°C ABSOLUTE MAXIMUM RATINGS

www.irf.com 3 ATW28XXD Series Notes to Specifications Table I. Electrical Performance Characteristics - continued ATW2812D 1 Parameter guaranteed by line, load and cross regulation tests. 2 Up to 90% of full power is available from either output provided the total output does not exceed 30W. 3 Bandwidth guaranteed by design. Tested for 20KHz to 2MHz.

4 Load current split equally between +V

OUT and –VOUT . 5 Three-watt load on output under test, 3 watt to 27 watt load change on other output. 6 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. 7 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.

8 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. 9 Load step transition time between 2 and 10 microseconds.

10 Recovery time is measured from the initiation of the transient to where V

OUT has returned to within ±1 percent of VOUT at 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. Test Symbol Conditions -55°C ≤Tc ≤+125°C Vin = 28 Vdc ±5%, CL = 0 unless otherwise specified Group A Subgroups Device Types Limits Unit Min Max Output response transient step line changes 4, 7, 11 VO TLINE Input step from/to 18 to 40 Vdc, IOUT = 2500mA 4,5,6 All -800 +800 mV pk Recovery time transient step line change 4, 7, 10, 11 TTLINE Input step from/to 18 to 40 Vdc, IOUT = 2500mA 4,5,6 All 4000 µs Turn on overshoot VTon OS I OUT = 0 and 2500mA 4,5,6 All 750 mV pk Turn on delay 4, 12 TonD I OUT = 0 and 2500mA 4,5,6 All 14 ms Load fault recovery TrLF 4,5,6 All 14 ms Weight Flange 75 grams

4 www.irf.com ATW28XXD Series Specifications Table II. Electrical Performance Characteristics ATW2815D For Notes to Specifications, refer to page 5 Test Symbol Conditions -55°C ≤Tc ≤+125°C Vin = 28 Vdc ±5%, CL = 0 Unless otherwise specified Group A Subgroups Device Types Limits Unit Min Max Output voltage V OUT V IN = 18, 28, and 40 Vdc 1 All ±14.85 ±15.15 VDC I OUT = 0 2,3 All ±14.70 ±15.30 VDC Output current 11, 13 IOUT V IN = 18, 28, and 40 V dc 1,2,3 All 0.200 2000 mA DC Output ripple voltage VRIP V IN = 18, 28, and 40 V dc, B.W. = DC to MHz 1,2,3 All 85 mVp-p Output Power 4, 11 POUT V IN = 18, 28, 40 Vdc 1,2,3 All 30 W Line regulation 9, 10 VR LINE V IN = 18, 28, and 40 V dc, Iout = 0, 1000, and 2000mA

1 All 35 mV

2,3 All 75 mV Load regulation 9, 10 VR LOAD V IN = 18, 28, and 40 V dc, IOUT = 0, 1000, and 2000mA 1,2,3 All 150 mV Input current I IN I OUT = 0, inhibit (pin 8) 1,2,3 All 12 mADC I OUT = 0, inhibit (pin 8) = open 1,2,3 All 30 mADC Input ripple current I RIP I OUT = 2000mA 1,2,3 All 60 mAp-p Efficiency E FF IOUT = 2500mA TC = 25°C 1 All 80 % Isolation ISO Input to output or any pin to case (except pin 8) at 500V dc Tc = 25°C 6, 12 C L No effect on dc performance, Tc = 25°C

4 All 500 µF

PD Overload, TC = +25°C

1 All 9

W Short circuit, TC = +25°C 1 All 9 W Switching frequency F S I OUT = 2000mA 1,2,3 01 237 263 KHz 1,2,3 02 230 245 KHz 1,2,3 03 250 265 KHz Output response to step transient load changes 7, 9, 10 VO TLOAD 50% load to/from 100% load 4,5,6 All -300 +300 mV pk No load to 100% load 4,5,6 All -800 -800 mV pk 100% load to no load 4,5,6 All +800 +800 mV pk Recovery time step transient load changes 1, 7 TTLOAD 50% load to/from 100% load 4,5,6 All 25 µs No load to 50% load 4,5,6 All 500 µs 50% load to no load 4,5,6 All 7 ms Input Voltage -0.5V to 50V Soldering Temperature 300°C for 10 seconds Case Temperature Operating -55°C to +125°C Storage -65°C to +135°C ABSOLUTE MAXIMUM RATINGS

www.irf.com 5 ATW28XXD Series Table II. Electrical Performance Characteristics - continued Notes to Specifications ATW2815D 1 Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1% of VOUT at 50% load. 2 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. 3 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. 4 Above +125°C case, derate output power linearly to 0 at +135°C case. 5 Input step transition time between 2 and 10 microseconds. 6 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. 7 Load step transition time between 2 and 10 microseconds. 8 Bandwidth guaranteed by design. Tested for 20KHz to 2MHz.

9 Load current split equally between +V

OUT and –VOUT . 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. Test Symbol Conditions -55°C ≤Tc ≤+125°C Vin = 28 Vdc ±5%, CL = 0 unless otherwise specified Group A Subgroups Device Types Limits Unit 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 4,5,6 All -600 mV pk Recovery time transient step line changes 1. 5, 12 TTLINE Input step from/to 18 to 40 VDC 4,5,6 All 400 µs Input step from 40 to 18 VDC 4,5,6 All 400 µs Turn on overshoot VTon OS I OUT = 0 and 2000mA 4,5,6 All 750 mV pk Turn on delay TonD I OUT = 0 and 2000mA 4,5,6 All 12 ms Load fault recovery TrLF V IN = 18 to 40 VDC 4,5,6 All 12 ms Weight Flange 75 grams

6 www.irf.com ATW28XXD Series 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. ATW28XXD Block Diagram

Application Information

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. Device Synchronization 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. 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. 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. Typical Synchronization Connection 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. ATW28xxD ATW28xxS AFC461 or AFV461 ATW28xxD or Other Compatable + In + In + In Case Case Case Return Return Return Return Return Return Output Output Output MSTR SLV SLV + In Return Output Return System Bus Output Output +Vout Return Pulse Width Modulator EMI Filter1 +Input Enable Input Return FB Drive 1 Drive 2 S ync Error Amp & Reference 5 -Vout

www.irf.com 7 ATW28XXD Series Pin Designation ATW28XXD Case Outlines Part Numbering 2.700 Max2.360 1.350 Max 1.95 0.500 Max 0.05

0.040 D X

0.26 L Pins

4 X 0.400 =1.600 61 0 987 123 54 1.000 ATW 28 15 D / CH - MSTR Model Input Voltage 28 = 28V Nominal Output Voltage Single - 05, 12, 15VDC Dual - 12 = ±12V, 15 = ±15V Outputs S = Single D = Dual Screening – , ES, HB, CH Sync Option MSTR = Mast er SLV = Slave Omit for Standard Pin No. Designation

1 Positive Input

2 N/C Standard or

Sync. ( Optional )

3 Positive Output

4 Output Return

5 Negative Output

6 N/C

7 Case Ground

8 Inhibit

9 N/C

10 Input Return

8 www.irf.com ATW28XXD Series Available Standard Military Drawing (SMD) Cross Reference 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 Available Screening Levels and Process Variations for ATW28XXD Series * Per Commercial Standards Requirement MIL-STD-883 Method No Suffix ES Suffix HB Suffix CH Suffix Temperature Range -20 to +85°C -55 °C to +125°C -55 °C to +125°C -55 °C to +125°C Element Evaluation MIL-PRF-38534 Internal Visual 2017 ∗ Yes Yes Yes Temperature Cycle 1010, Cond C Cond A Yes Yes Constant Acceleration 2001, Cond A 500g 5,000g 5,000g Burn-in 1015 48hrs @ 85°C 48hrs @ 105 °C 160hrs @ 125 °C 160hrs @ 125 °C Final Electrical (Group A) MIL-PRF-38534 & Specification Seal, Fine & Gross

1014 Yes Yes Yes

2009 ∗ Yes Yes Yes Standardized Vendor Vendor Military Drawing CAGE Similar Pin Number Pin 5962-9210901HZX 52467 ATW2812D/CH 5962-9210902HZX 52467 ATW2812D/CH-SLV 5962-9210903HZX 52467 ATW2812D/CH-MSTR 5962-9161301HZX 52467 ATW2815D/CH 5962-9161302HZX 52467 ATW2815D/CH-SLV 5962-9161303HZX 52467 ATW2815D/CH-MSTR -55°C Code