Invention Grant
- Patent Title: Switch mode power supply apparatus having active clamping circuit
- Patent Title (中): 具有有源钳位电路的开关电源装置
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Application No.: US11971406Application Date: 2008-01-09
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Publication No.: US08488348B2Publication Date: 2013-07-16
- Inventor: Hyung-won Hong , Joe-hoon Jung
- Applicant: Hyung-won Hong , Joe-hoon Jung
- Applicant Address: KR Suwon-si
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR Suwon-si
- Agency: Staas & Halsey LLP
- Priority: KR10-2007-0060683 20070620
- Main IPC: H02H7/122
- IPC: H02H7/122

Abstract:
A switch mode power supply apparatus includes a transformer, a main switching device to adjust a power supply supplied to a primary coil of the transformer, an active clamping circuit to suppress a voltage stress of the main switching device, and a control circuit to control a clamping operation of the active clamping circuit when the switch mode power supply apparatus is in a standby mode. Therewith, it is possible to significantly reduce power consumption of the switch mode power supply apparatus in the standby mode and improve efficiency of the switch mode power supply apparatus.
Public/Granted literature
- US20080315858A1 SWITCH MODE POWER SUPPLY APPARATUS HAVING ACTIVE CLAMPING CIRCUIT Public/Granted day:2008-12-25
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