Inverter circuit includes noise suppression circuit to set zero impedance between control terminal and main terminals of switch according to detection of variation in amplitude and frequency of drive voltage

摘要

A detector detects the variation in the amplitude and frequency of the drive voltage supplied between the control terminal and the main terminals of the switches (SwH,SwL). The impedance between the control terminal and the main terminals, is set to zero using the noise suppression circuits (13,14) according to the detection result.