5V/10A 20kHz blocking ammeter transformator using SIPMOS transistor

Published:2011/4/19 21:48:00 Author:May | Keyword: 5V/10A 20kHz, blocking ammeter transformator, SIPMOS transistor | From:SeekIC

This circuit is convertor which can change input DC voltage (+20~+30V) to lower DC output voltage (+5V). Integrated circuit TDB0555B is time base circuit which can generate 20kHz square wave. The timing time of output (pin 3) is between 10~40μs. Fixed bias can make T1 to break over. Square wave voltage outputted by TDB0555B is differential to triangle wave voltage by R4, C5 and R6+R7. It also can make T1 to cut off. So T1's output is square wave. Then the transformer can output AC and DC voltage after rectifying and filtering before passing opposite phase grade, drive grade and power amplifier grade.Main technical data: input voltage: +20~30V (rated value is 24V);output voltage: +5V;output current: 10A;network voltage adjustment rate: ±0.5%;load voltage adjustment rate: ±2%;efficiency: 78% (when the input voltage is 24V)



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