发明名称 |
Standby Operation of a Resonant Power Convertor |
摘要 |
A control method is proposed that enables to drive a resonant (LLC) power converter at low loads with substantially reduced power losses for realizing a stand-by power. The reduction is achieved by a sub-critical operation several times below Resonance Frequency while still keeping zero voltage switching. One half-bridge switch (s1) is turned on for a short pulse-in the remaining time of the sub-critical switching period the resonant current oscillates through the other switch (s2). Zero voltage switching is obtained by evaluating the resonant capacitor voltage. The pulse length determines the stand-by power and is used as controlling variable. The power supply is suitable for Consumer Electronics products that require a low power standby supply.
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申请公布号 |
US2009207635(A1) |
申请公布日期 |
2009.08.20 |
申请号 |
US20050569079 |
申请日期 |
2005.05.11 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS, N.V. |
发明人 |
ELFERICH REINHOLD |
分类号 |
H02M3/335;H02M;H02M3/337 |
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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