Patent ID: 9548669
Date: 2017-01-17
CPC Classifications: H02M,Y02B

Claim:
1. A method for controlling a DC-DC power converter, the DC-DC power converter including an inverting switch that converts input DC power to intermediate AC power, a transformer coupled to the inverting switch to receive the intermediate AC power and provide stepped-down AC power, and a synchronous rectifier coupled to the transformer to convert the stepped-down AC power to output DC power, the DC-DC power converter being arranged in parallel with at least one other DC-DC power converter in a droop load share switched-mode power supply, the method comprising: detecting that the inverting switch is not switching during start-up of the DC-DC power converter; and increasing a reference voltage set point of the DC-DC power converter in response to detecting that the inverting switch is not switching to force the inverting switch to start switching.