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AHF2815S Dataheets PDF



Part Number AHF2815S
Manufacturers International Rectifier
Logo International Rectifier
Description HYBRID-HIGH RELIABILITY DC-DC CONVERTER
Datasheet AHF2815S DatasheetAHF2815S Datasheet (PDF)

HYBRID-HIGH RELIABILITY DC-DC CONVERTER PD-94541E AHF SERIES 28V Input, Single/Dual Output   Description The AHF Series of DC-DC converters feature single or dual outputs over the full military temperature range. No derating in output power is required, making them suitable for use in rugged military applications. The low profile, small outline package is ideally suited to the tight board space requirements of many industrial and aerospace applications. Designed for nominal 28Vdc inputs, this .

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HYBRID-HIGH RELIABILITY DC-DC CONVERTER PD-94541E AHF SERIES 28V Input, Single/Dual Output   Description The AHF Series of DC-DC converters feature single or dual outputs over the full military temperature range. No derating in output power is required, making them suitable for use in rugged military applications. The low profile, small outline package is ideally suited to the tight board space requirements of many industrial and aerospace applications. Designed for nominal 28Vdc inputs, this family of converters will meet the requirements of MIL-STD-704D. The basic circuit utilizes a pulse width modulated, feed-forward topology at a nominal switching frequency of 550KHz. Input to output isolation is achieved through the use of transformers in the forward and feedback circuits. The proprietary magnetic feedback circuit provides for an extremely wide bandwidth control loop with a high phase margin. The closed loop frequency response of this converter family extends to approximately 50kHz, resulting in superior line and load transient characteristics. This feedback method is also inherently temperature and radiation insensitive. This gives the AHF Series an important advantage over converters that incorporate opto-couplers in their design. Manufactured in a facility fully qualified to MIL-PRF-38534, these converters are fabricated utilizing DLA qualified process. For available screening options, refer to device screening table in the data sheet. Variations are electrical, mechanical and screening can be accommodated. Extensive computer simulation using complex modeling enables rapid design modification to be provided. Contact IR HiRel San Jose with specific requirements. AHF Features  16V to 40VDC Input Range (28VDC Nominal)  Single and Dual Outputs  12W Output Power  22.8W/in3 Power Density  Low Input / Output Noise (50mA / 60mVP-P max. respectively)  Indefinite Short Circuit and Overload Protection  Wideband Control Loop for Superior Transient Characteristics  No derating for -55°C to +125°C Operation  Constant Switching Frequency (550kHz Nominal)  Standard Microcircuit Drawings Available 1 2017-05-08 AHF SERIES (28V Input, Single/Dual Output) Specifications Absolute Maximum Ratings Input Voltage Soldering temperature Operating case temperature Storage case temperature   -0.5Vdc to +50VDC +300°C for 10 seconds -55°C to +125°C -65°C to +135°C Table I. Electrical Performance Characteristics AHF2803R3S Parameter Symbol Conditions -55°C  TC  +125°C VIN = 28 VDC ± 5%, CL = 0 Unless otherwise specified Group A Subgroups Device Types Limits Min Max Unit Output voltage Output current1 VOUT IOUT = 5% of rated load IOUT VIN = 16, 28, and 40Vdc 1 2,3 1,2,3 3.26 3.34 01 3.23 3.36 V 01 3030 mA Output power POUT VIN = 16, 28, and 40Vdc 1,2,3 01 10 W Output ripple voltage2 Line regulation Load regulation Input current Input ripple current2 VRIP VRLINE VRLOAD IIN IRIP VIN = 16, 28, and 40Vdc, B.W. = 20 Hz to 2MHz VIN = 16, 28, and 40Vdc, IOUT = 5%, 50% and 100% rated load VIN = 16, 28, and 40Vdc, IOUT = 5%, 50% and 100% rated load IOUT = 0, Inhibit (Pin 1) tied to Input Return (Pin 7) IOUT = 0, Inhibit (Pin 1) = open IOUT = 100% rated load B.W. = 20 Hz to 2 MHz 1,2,3 1,2,3 1,2,3 01 01 01 1,2,3 01 1,2,3 01 60 mVp-p 25 mV 50 mV 12 mA 30 50 mAp-p Efficiency Isolation Capacitive load3,4 Power dissipation load fault EFF IOUT = 100% rated load Input to output or any pin ISO to case (except Pin 6) at 500Vdc TC = +25°C CL No effect on dc performance, TC = +25°C PD Overload 5 Short circuit 1 2,3 1 4 1 1,2,3 01 70 68 01 100 % M 01 500 µF 01 6.0 W 01 2.0 Switching frequency FS IOUT = 100% rated load 4,5,6 01 500 600 kHz For Notes to Electrical Performance Characteristics, refer to page 3 2 2017-05-08 AHF SERIES (28V Input, Single/Dual Output) Table I. Electrical Performance Characteristics (continued) Parameter Output response to step transient load changes6 Recovery time step transient load changes6.7 Symbol Conditions -55°C  TC  +125°C VIN = 28 VDC ± 5%, CL = 0 unless otherwise specified Group A Subgroups VOTLOAD 50% to/from 100% rated load 5% to/from 50% rated load 4,5,6 4,5,6 TTLOAD 50% to/from 100% rated load 4,5,6 5% to 50% rated load 4,5,6 Output response to transient step line changes Recovery time transient step line changes Turn on overshoot Turn on delay 50% to 5% rated load VOTLINE TTLINE VTonOS TonD Input step 16V to/from 40Vdc, IOUT = 100% rated load 4, 8 Input step 16V to/from 40Vdc, IOUT = 100% rated load 4, 7, 8 IOUT = 5 and 100% rated load IOUT = 5 and 100% rated load 9 4,5,6 4,5,6 4,5,6 4,5,6 4,5,6 Load fault recovery4,9 Weight TrLF 4,5,6 Device Types 01 01 01 01 01 01 01 AHF2803R3S   Limits Min Max Unit -300 +300 -500 +500 mVpk 70 µs 1200 8.0 µs ms 500 mVpk 800 µs 600 mVpk 20 ms 20 ms 38 g Notes to Table I: 1. P.


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