JCIPRNET
Time signal generating circuit of power converter and control method thereof
A time signal generating circuit of a power converter and a control method thereof are provided. The time signal generating circuit includes a reference frequency generating circuit, an on-time circuit and a frequency tracking circuit. The reference frequency generating circuit provides a reference frequency signal. The on-time circuit provides an on-time signal according to a first reference signal and a second reference signal. The second reference signal is related to an output voltage of the power converter. The frequency tracking circuit is coupled to the reference frequency generating circuit and the on-time circuit, and compares frequencies of the reference frequency signal and the on-time signal within a default time to generate a tracking signal. The on-time circuit adjusts the second reference signal according to the tracking signal, so that the on-time circuit adjusts the frequency of the on-time signal.
uPI Semiconductor Corp.
H H H
H02M H03K H02M
inventional inventional inventional
Chun-Chieh Chih-Lien
Wang Chang