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ASA2812D-CH Datasheet(PDF) 1 Page - International Rectifier |
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ASA2812D-CH Datasheet(HTML) 1 Page - International Rectifier |
1 / 4 page 09/11/02 www.irf.com 1 ADVANCED ANALOG HIGH RELIABILITY HYBRID DC/DC CONVERTERS ASA28XXS SERIES Description n Up To 5 Watt Output Power n 5, 12,15 Volt Outputs n High Reliability n Wide Input Voltage Range -16 To 40 Volts n Indefinite Short Circuit and Overload Protection n Popular Industry Standard Pin-Out n Military Screening Available n Parallel Seam Welded Package n No External Capacitors Required n Input Voltage Surge Protected to MIL-STD-704A n Under Voltage Lockout n Available as Standard Military Drawing Features ASA 28V Input, Single Output The ASA28XXS Series of DC/DC converters are high reliability thick film hybrid converters that use flyback topology operating at a nominal frequency of 550Khz. High input to output isolation is achieved through the use of transformers in the flyback power and feedback circuits. The advanced feedback design provides fast loop re- sponse for superior line and load transient characteris- tics and offers greater reliability than devices incorpo- rating optical feedback circuits. This device is designed to meet MIL-STD-704D input requirements offering full performance over a 16 to 40 volt input range. Output Power of up to 5 watts is avail- able. Connecting the inhibit pin (pin 5) to the input common (pin 7) will cause the converter to shut down. It is rec- ommended that the inhibit pin be driven by an open collector device capable of sinking at least 400 µA. The open circuit voltage of the inhibit pin is 11.5 ±0.5 volts. These converters are manufactured in a facility fully qualified to MIL-PRF-38534. All processes used to manufacture these converters have been qualified thereby enabling Advanced Analog to deliver fully com- pliant devices. Three standard temperature grades are offered with the screening options. Refer to Screening Level section. The CH grade converters are fully com- pliant to MIL-PRF-38534 for class H. The HB grade converters are processed with the same screening as the CH grade, but do not have class H element evalua- tion as required by MIL-PRF-38534. These two grades are fully tested and operate over the full military tem- perature range without derating of output power. A commercial grade is also available. Variations in elec- trical, mechanical and screening requirements can be accommodated. Extensive computer simulation using complex modeling allows design modifications to be examined. Contact Advanced Analog with specific requirements. PD - 94539 |
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