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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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AHF2805SF/ES Arkusz danych(PDF) 1 Page - International Rectifier |
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AHF2805SF/ES Arkusz danych(HTML) 1 Page - International Rectifier |
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1 / 17 page  10/08/02 www.irf.com 1 ADVANCED ANALOG HYBRID-HIGH RELIABILITY DC/DC CONVERTERS AHF28XX SERIES Description n 16 to 40 VDC Input Range (28 VDC Nominal) n Single and Dual Outputs n 12 Watts Output Power n 22.8 W/in3 Power Density n Low Input / Output Noise (50mA/60mVp-p max. respectively) n Indefinite Short Circuit and Overload Protection n Wideband Control Loop for Superior Transient Characterstics Features AHF 28V Input, Single and Dual Output 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 character- istics. This feedback method is also inherently tem- perature and radiation insensitive. This gives the AHF Series an important advantage over converters that incorporate opto-couplers in their design. n Constant Switching Frequency (550KHz Nominal) 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 require- ments of MIL-STD-704D. The basic circuit utilizes a pulse width modulated, feed-forward topology at a nomi- nal switching frequency of 550KHz. Input to output iso- lation is achieved through the use of transformers in the forward and feedback circuits. These converters are manufactured in a facility certi- fied to MIL-PRF-38534. All processes used to manu- facture these converters have been qualified to enable Advanced Analog to deliver compliant devices. Four screening grades are available to satisfy a wide range of requirements. The CH grade converters are fully com- pliant to MIL-PRF-38534 class H. The HB grade con- verters are processed to full MIL-PRF-38534 screen- ing but do not have class H element evaluation as re- quired by MIL-PRF-38534. Two grades are fully tested and operate the full military temperature range without derating of output power. Industrial and commercial grades are also available. Variations are electrical, mechanical and screening can be accommodated. n No Derating for -55°C to +125°C Opertation Extensive computer simulation using complex modeling enables rapid design modification to be provided. Contact Advanced Analog with spe- cific requirements. PD - 94541 |
Podobny numer części - AHF2805SF/ES |
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Podobny opis - AHF2805SF/ES |
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