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AHE281XD Datasheet(PDF) 1 Page - International Rectifier |
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AHE281XD Datasheet(HTML) 1 Page - International Rectifier |
1 / 10 page 01/08/07 www.irf.com 1 AHE28XXD SERIES Description n 17V to 40VDC Input Range n 28VDC Nominal Input n ± 5V, ±12V and ±15V Outputs Available n Indefinite Short Circuit and Overload Protection n 12.9W/in 3 Power Density n 15W Output Power n Fast Loop Response for Superior Transient 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 n Efficiencies up to 82% n Shutdown from External Signal n Military Screening n 314,000 hour MTBF at 85°C (AUC) n Standard Microcircuit Drawings Available Features AHE 28V Input, Dual Output The AHE 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-704D input requirements, these devices have nominal 28VDC inputs with ±5V, ±12V and ±15V dual outputs to satisfy a wide range of requirements. The circuit design incorporates a pulse width modulated push-pull topology operating in the feed-forward mode at a nominal switching frequency of 250KHz. Input to output isolation is achieved through the use of transformers in the forward and feedback circuits. Manufactured in a facility fully qualified to MIL-PRF- 38534, these converters are fabricated utilizing DSCC qualified processes. For available screening options, refer to device screening table in the data sheet. Variations in electrical, mechanical and screening can be accommodated. Contact IR Santa Clara for special requirements. HYBRID-HIGH RELIABILITY DC/DC CONVERTER The advanced feedback design provides fast loop response for superior line and load transient characteristics and offers greater reliability and radiation tolerance than devices incorporating optical feedback circuits. PD-94555B |
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