Patent ID: 9570985
Date: 2017-02-14
CPC Classifications: A61P,H02M,Y02B

Claim:
1. An apparatus, comprising: a DC-DC converter comprising a pulse-width modulation (PWM) generator that generates a first PWM signal; wherein the DC-DC converter is configured to generate an output voltage that depends on a first input voltage to the DC-DC converter and a duty cycle of the first PWM signal; a device for measuring the first input voltage at a point in time; a device for measuring an output current of the DC-DC converter at the point in time; a processor based PWM controller that calculates a second duty cycle as a function of the measured first input voltage and the measured output current of the DC-DC converter; wherein the processor based PWM controller is configured to generate a second PWM signal having the second duty cycle; a boost converter coupled to receive the second PWM signal and configured to generate a drive voltage for the DC-DC converter, wherein a magnitude of the drive voltage depends on the second duty cycle of the second PWM signal.