Patent ID: 8749217
Filing Date: 2014-06-10
Classification: H02M

Abstract:
1. A controller for a DC/DC converter, comprising: a first error analog to digital converter (EADC) configured to detect a primary voltage from a secondary side of a transformer and generate a first error signal corresponding to the primary voltage, the first error signal being generated based on a comparison between a first reference voltage and the detected primary voltage; and a first accelerator configured as a feedforward control to process the first error signal and generate a first compensation signal based on a primary voltage variation from the first reference voltage; further comprising a second error analog to digital converter (EADC) configured to detect an output voltage of the DC/DC converter and generate a second error signal corresponding to the output voltage, wherein the second error signal is generated based on a comparison between a second reference voltage and the detected output voltage; a second accelerator configured to process the second error signal and generate a second compensation signal that is fedback to the primary side of the transformer to control the output voltage, wherein the first compensation signal and the second compensation signal are combined to adjust a pulse width modulator (PWM) that controls switching elements to the primary side of the transformer.