Patent ID: 9596725
Date: 2017-03-14
CPC Classifications: H02M,H05B,Y02B

Claim:
1. A switch mode power supply (SMPS), comprising: an input terminal and a ground terminal for receiving a rectified DC input voltage; a positive output terminal and a negative output terminal for providing an output current to an output load, the output current being configured to flow from the positive output terminal through the output load to the negative output terminal, the positive output terminal being coupled to the input terminal; a buck converter circuit, including: and a controller configured for regulating the output current based at least in part on controlling a peak current in the first inductor according to a ratio between an instantaneous voltage at the negative output terminal to an average voltage at the negative output terminal, the controller also configured to receive an output compensation signal from the negative output terminal of the SMPS; wherein the controller is configured to cause the SMPS to operate in a boundary conduction mode (BCM).