Patent ID: 9673706
Date: 2017-06-06
CPC Classifications: H01L,H02M

Claim:
1. A control integrated circuit (IC), characterized by being the control IC of a rectifier diode-type buck DC/DC converter and comprising, an input terminal, configured to receive an input voltage; a switch terminal, connected with an inductor and connected with a cathode of the rectifier diode; a ground terminal, connected with an anode of the rectifier diode; an N-channel DMOS switch transistor, disposed between the input terminal and the switch terminal; a first diode and an N-channel DMOS low-side transistor, connected in series with and disposed between the switch terminal and the ground terminal; a high-side driver, configured to switch the switch transistor; and a low-side driver, configured to switch the low-side transistor; wherein the first diode comprises a P-channel DMOS transistor.