UCC3580 converter circuit

Published:2011/7/10 5:49:00 Author:chopper | Keyword: converter circuit | From:SeekIC

Figure 1 shows the UCC3580 converter, and it is the positive driving DC-DC converter whose input voltage is +18~+30 V, and output is 5V/8A. In the circuit, the control circuit adopts UCC3580 integrated controller,and the internal equivalent circuit is shown as Figure 2.In the UCC3580 there is the oscillator which can determine the switching frequency and dead time,error amplifier, pulse by pulse type over-current protection circuit,PWM control comparator,the circuit which can decide the work starting voltage and stopping voltage,and the PWM output which can drive the main switch and auxiliary switch and timing circuits and so on.



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