Patent ID: 9685881
Date: 2017-06-20
CPC Classifications: H02M,Y02B

Claim:
1. An AC-DC rectifier comprising: an input configured to be coupled to an AC power source and to receive input AC power from the AC power source having an input AC voltage waveform; a positive output configured to provide a positive DC output voltage to a load; a negative output configured to provide a negative DC output voltage to the load; a first DC bus; a second DC bus; a capacitor coupled between the first DC bus and the second DC bus; a converter coupled to the input, the first DC bus, and the second DC bus and configured to receive the input AC power from the input, the converter including a first switch coupled between the first DC bus and ground and a second switch coupled between the second DC bus and ground; output circuitry coupled to the converter, the positive output, and the negative output; a first output capacitor coupled between the positive output and ground; a second output capacitor coupled between the negative output and ground; and a controller coupled to the converter and the output circuitry, the converter configured, during a positive half line cycle of the input AC voltage waveform, to: