发明名称 |
Method and apparatus for maintaining a constant load current with line voltage in a switch mode power supply |
摘要 |
A method and apparatus of reducing peak current variation with changing input line voltage in a switch mode power supply is disclosed. An example method includes sensing a current through a switching device of the switch mode power supply. A variable current limit threshold is generated, which increases from a first level to a second level during an on time of the switching device. The current is compared to the variable current limit threshold. A feedback signal representative of an output voltage of the switch mode power supply is sensed. The switching device is controlled in response to the feedback signal and said comparing the current to the variable current limit threshold. |
申请公布号 |
US8427124(B2) |
申请公布日期 |
2013.04.23 |
申请号 |
US201113193284 |
申请日期 |
2011.07.28 |
申请人 |
BALAKRISHNAN BALU;DJENGUERIAN ALEX B.;WONG KENT;MATTHEWS DAVID MICHAEL HUGH;POWER INTEGRATIONS, INC. |
发明人 |
BALAKRISHNAN BALU;DJENGUERIAN ALEX B.;WONG KENT;MATTHEWS DAVID MICHAEL HUGH |
分类号 |
G05F1/40;H02M3/28;H02M3/335 |
主分类号 |
G05F1/40 |
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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