Knee voltage detector
A knee voltage detector for a flyback converter is provided. The knee voltage detector comprises a delay unit, for delaying an auxiliary related voltage for a specific period, to generate a delay signal; a subtracting unit, for generating a subtraction signal according to the auxiliary related voltage and the delay signal; a comparing unit, for generating a sampling signal when the subtraction signal indicates that a voltage difference between the auxiliary related voltage and the delay signal is greater than a threshold; and a sample and hold unit, for sampling the delay signal to generate a knee voltage according to the sampling signal when the voltage difference between the auxiliary related voltage and the delay signal is greater than the threshold.
NOVATEK Microelectronics Corp.
G H G H
G01R H02M G01R H02M
additional inventional inventional additional
Hao-Yuan Ying-Hsiang Chao-Chang Ke-Horng Chih-Wei Che-Hao
Lin Wang Chiu Chen Chang Meng