发明名称 |
Quasi resonant switching mode power supply |
摘要 |
A switching mode power supply (SMPS) and a driving method thereof are provided. The SMPS includes a power supply block that includes a first switch coupled to a first coil of a primary side of a transformer for converting an input voltage, wherein the power supply block supplies power to a second coil and a third coil of a secondary side of the transformer according to operation of the first switch; and a PWM signal generator determines a turn-on time of the first switch according to the input voltage, and the turn-on time is determined regardless of a power magnitude of an output terminal connected to the second coil. Accordingly, screen noise due to a ripple can be eliminated and stress on the switch breakdown due to excessive power input can be reduced to enable an SMPS with stable driving.
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申请公布号 |
US7684216(B2) |
申请公布日期 |
2010.03.23 |
申请号 |
US20080079703 |
申请日期 |
2008.03.28 |
申请人 |
FAIRCHILD KOREA SEMICONDUCTOR, LTD. |
发明人 |
CHOI HANG-SEOK;KIM JIN-TAE;CHI JAE-HWOAN |
分类号 |
H02M3/335 |
主分类号 |
H02M3/335 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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