Patent ID: 9293987
Filing Date: 2016-03-22
CPC Classification: H02M

Claim Text:
1. A load driving circuit device that controls a supply of power to an electrical load, comprising: a first switching arrangement connected between a terminal on a high potential side of a direct current power supply and a terminal of the electrical load; a second switching arrangement connected between a terminal on the low potential side of the direct current power supply and a further terminal of the electrical load; a control arrangement for controlling the first switching arrangement and second switching arrangement to disconnect each other simultaneously using respective PWM control signals having the same frequency and the same duty ratio; and a synchronization arrangement, comprising a first feedback circuit and a second feedback circuit, for synchronizing a disconnect timing of the first switching arrangement and a disconnect timing of the second switching arrangement wherein the first feedback circuit comprises a first capacitor in series with a first transistor and a second transistor, and the second feedback circuit comprises a second capacitor in series with a third transistor and a fourth transistor.