Patent ID: 9225251
Filing Date: 2015-12-29
Classification: H02M

Abstract:
1. A power converter, comprising: a power module for converting an input voltage into an output voltage; a feedback module electrically connected with said power module for generating a feedback voltage according to said output voltage; and a control module electrically connected with said feedback module and said power module for comparing a reference duty cycle value with a duty cycle, generating a variable reference voltage according to the comparison between said reference duty cycle value and said duty cycle, comparing said variable reference voltage with said feedback voltage, and adjusting said duty cycle according to the comparison between said variable reference voltage and said feedback voltage, wherein said control module comprises: a first comparing circuit for comparing said reference duty cycle value with said duty cycle, thereby generating an error duty cycle; a first computing circuit electrically connected with said first comparing circuit for computing said error duty cycle, thereby generating and adjusting said variable reference voltage; a second comparing circuit electrically connected with said first computing circuit and said feedback module for comparing said variable reference voltage with said feedback voltage, thereby generating an error voltage; a second computing circuit electrically connected with said second comparing circuit for computing said error voltage, thereby generating and adjusting said duty cycle; and a driving signal generator electrically connected with said second computing circuit and said power module for receiving said adjusted duty cycle from said second computing circuit and generating a driving control signal corresponding to said adjusted duty cycle.