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1. (WO2017068531) DRIVING CIRCUIT WITH ELECTROMAGNETIC INTERFERENCE SUPPRESSION EFFECT

Pub. No.:    WO/2017/068531    International Application No.:    PCT/IB2016/056325
Publication Date: Fri Apr 28 01:59:59 CEST 2017 International Filing Date: Sat Oct 22 01:59:59 CEST 2016
IPC: H05B 33/08
H02M 1/44
Applicants: GOOEE LIMITED
Inventors: CHEN, Chun-Kuang
CHEN, Tung-Yu
Title: DRIVING CIRCUIT WITH ELECTROMAGNETIC INTERFERENCE SUPPRESSION EFFECT
Abstract:
A driving circuit with electromagnetic interference suppression comprises a driving unit, a power switching unit and a constant current unit. The first terminal of an inductor of the power switching unit is coupled with the driving unit; the second terminal thereof is coupled with a diode and a first transistor respectively; the third terminal of the first transistor is coupled with an ground terminal; a first impedance element is connected with the first terminal or the second terminal of the diode; a second impedance element is connected with the first terminal or the third terminal of the first transistor; the first terminal of a third impedance element is connected with the second terminal of the first transistor, and the second terminal of the third impedance element is coupled with the driving unit.