Invention Grant
US08634211B2 Switch control device, power supply device comprising the same and switch control method
有权
开关控制装置，包括相同的电源装置和开关控制方法
- Patent Title: Switch control device, power supply device comprising the same and switch control method
- Patent Title (中): 开关控制装置，包括相同的电源装置和开关控制方法
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Application No.: US13111779Application Date: 2011-05-19
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Publication No.: US08634211B2Publication Date: 2014-01-21
- Inventor: Young-Je Lee , Gye-Hyun Cho
- Applicant: Young-Je Lee , Gye-Hyun Cho
- Applicant Address: KR Bucheon
- Assignee: Fairchild Korea Semiconductor Ltd.
- Current Assignee: Fairchild Korea Semiconductor Ltd.
- Current Assignee Address: KR Bucheon
- Agency: Okamoto & Benedicto LLP
- Priority: KR10-2010-0070656 20100721
- Main IPC: H02M3/335
- IPC: H02M3/335 ; G05F1/00
Abstract:
A power voltage required to operate the switch control device is generated by using full-wave current rectification voltage generated by rectifying an AC input. A zero cross-point is detected when a full-wave rectification voltage is zero voltage by using the power voltage. A reference signal synchronized to the full-wave rectification voltage is generated by using the detected zero cross-point. A switching operation of a power switch is controlled by comparing a reference signal with current that flows on the power switch.
Public/Granted literature
- US20120020133A1 SWITCH CONTROL DEVICE, POWER SUPPLY DEVICE COMPRISING THE SAME AND SWITCH CONTROL METHOD Public/Granted day:2012-01-26
Information query
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