Auxiliary sampling circuit of primary inductance peak current of switching power supply
作者： Ma Qiang , Xu Gangying , Wu Qiang , Xiang Lei , Tang Bo
DOI:
关键词: Inductance 、 Voltage 、 Controller (computing) 、 Switched-mode power supply 、 Pulse-width modulation 、 Transmission delay 、 Sampling (statistics) 、 Computer science 、 Electrical engineering 、 Resistor
摘要: Disclosed in the invention is an auxiliary sampling circuit of a primary inductance peak current switching power supply. The composed PWM inverting circuit, first fine tuning delay and second circuit. carries out on voltage obtained by compensating for error caused delayed internal transmission controller chip. enables chip to be completed when starts carry guarantees that final supply reaching value, thereby realizing actual For voltage, precise can resistor, avoiding inaccuracy due factors like like. precision guaranteed; stability consistency are improved.
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