APPARATUS AND METHOD THEREOF FOR MEASURING OUTPUT CURRENT FROM PRIMARY SIDE OF POWER CONVERTER
摘要
<p>An apparatus and method thereof for measuring an output current from a primary side of a power converter are provided. A peak detector is designed to sample a peak value of a converted voltage of a primary-side switching current. A zero-current detector detects a discharge-time of a secondary-side switching current through an auxiliary winding of a transformer. An oscillator generates a switching signal for switching the power converter. An integrator generates an integrated signal by integrating the converted voltage of the primary-side switching peak current with the discharge-time. The time constant of the integrator is correlated with the switching period of the switching signal. The integrated signal is thus proportional to the output current of the power converter.</p>
申请公布号
WO2007041898(A1)
申请公布日期
2007.04.19
申请号
WO2005CN01656
申请日期
2005.10.09
申请人
SYSTEM GENERAL CORP.;YANG, TA-YUNG;HUNG, GUO-KIANG;LIN, JENN-YU, G.