Steptoe & Johnson LLP
Energy transmission device and semiconductor device for energy transmission control
The present invention includes a voltage clamping circuit 6 for outputting a voltage signal, which has been clamped to a predetermined voltage, from the drain voltage of a switching element 1, and a turn-on detection circuit 7 for detecting the turn-on timing of the switching element 1 from the voltage signal. Thus it is possible to turn on the switching element 1 at the minimum value of the drain voltage without adding external terminals.
Panasonic Corporation
H
H02M
inventional
Takashi Tetsuji Yoshihiro
Saji Yamashita Mori