TIMING GENERATOR AND TIMING SIGNAL GENERATION METHOD FOR POWER CONVERTER

摘要

A timing generator for a power converter is provided. The timing generator includes a threshold voltage generation circuit and a timing generation unit. The threshold voltage generation circuit receives an error signal related to an output voltage of the power converter. The threshold voltage generation circuit generates a threshold voltage according to the error signal. The timing generation unit generates a timing signal according to the error signal, the threshold voltage and a control signal. The timing generation unit provides a tracking signal. A width of the timing signal depends on a time when tracking signal departed from a level of the error signal to a level of the threshold voltage. The present invention also provides a timing signal generation method for the power converter.

主权项

1. A timing generator for a power converter, comprising:
a threshold voltage generation circuit, receiving an error signal related to an output voltage of the power converter and generating a threshold voltage according to the error signal; and a timing generation unit, coupled to the threshold voltage generation circuit and generating a timing signal according to the error signal, the threshold voltage and a control signal, wherein the timing generation unit provides a tracking signal, and a width of the timing signal depends on a time when the tracking signal departs from a level of the error signal to a level of the threshold voltage.