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Voltage Regulated Power Chopper Method Circuit

2015-03-16 19:56  
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Voltage Regulated Power Chopper Method Circuit
1. Chopper method.The picture shows the chopper method circuit. This is a non-isolated conversion method whose conversion efficiency is beyond 85%. This method contains the buck type, boost type, and polarity inversion type.The picture (a) shows the buck type circuit. When the transistor VT1 is conducted, the U1 would be through VT1 to add onto the choke L1 and capacitance C1, thus it would provides the load power. When the VT1 is disconnected, the energy stored in L1 would be through the freewheeling diode VD1 to supply the load.The picture (b) shows the boost type circuit. When the transistor VT1 is connected, the choke L1 would store energy.