发明名称 |
High Efficiency Inductor-less Off-Line LED Driver |
摘要 |
The present document relates to providing power for driving SSL devices. A power converter converts a varying input voltage to supply an output voltage to a SSL device in series with a current source. The power converter comprises one or more capacitors; a plurality of switches to couple the capacitors in a plurality of configurations. A control unit operates the power converter in a plurality of operational modes providing a corresponding plurality of different conversion ratios between the input/output voltages. The operational modes comprise a first phase and a second phase, during which the capacitors are differently arranged. The control unit controls the switches to alternate between the phases at a commutation cycle rate. The control unit sets the operational mode based on the varying input voltage.
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申请公布号 |
US2013257277(A1) |
申请公布日期 |
2013.10.03 |
申请号 |
US201213561603 |
申请日期 |
2012.07.30 |
申请人 |
ZUDRELL-KOCH STEFAN;KNOEDGEN HORST;DIALOG SEMICONDUCTOR GMBH |
发明人 |
ZUDRELL-KOCH STEFAN;KNOEDGEN HORST |
分类号 |
H05B37/02 |
主分类号 |
H05B37/02 |
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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