发明名称 |
FUNCTIONAL ON/OFF SWITCH FOR SWITCHED-MODE POWER SUPPLY CIRCUIT WITH BURST MODE OPERATION |
摘要 |
A switched-mode power supply circuit having an operating mode and a stand-by mode, includes a functional ON/OFF switch. The switched-mode power supply circuit includes a transformer and a controllable switch connected to a primary winding of the transformer for switchably connecting the primary winding to a source of d.c. voltage. In the stand-by mode, based on a detected voltage level at an input of a controller IC, the switched-mode power supply circuit is arranged to switchable connect the primary winding to the d.c. voltage source in bursts which occur at a low frequency. By switchably connecting this input to a power source for the switched-mode power supply circuit, the controlled IC detects the absence of this power source, and turns off the switched-mode power supply circuit allowing a minimum current consumption by the switched-mode power supply circuit. |
申请公布号 |
WO9907061(A2) |
申请公布日期 |
1999.02.11 |
申请号 |
WO1998IB01137 |
申请日期 |
1998.07.27 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;PHILIPS AB |
发明人 |
MAJID, NAVEED;MOBERS, TOM;SEINEN, ERWIN, G., R. |
分类号 |
H02M3/28;H02M3/335;H04N5/63 |
主分类号 |
H02M3/28 |
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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