发明名称 |
CONTROL CIRCUITS AND METHODS FOR REGULATING OUTPUT VOLTAGES BASED ON ADJUSTABLE REFERENCES VOLTAGES |
摘要 |
Control circuits are provided for regulating an output voltage of a switched mode power supply having a variable input voltage and at least one power switch. The control circuits are operable to generate a comparison voltage based on the output voltage of the switched mode power supply and a duty cycle of a control signal provided to the at least one power switch, determine a reference voltage based on whether the generated comparison voltage falls within one of a plurality of voltage ranges, and adjust the duty cycle of the control signal provided to the at least one power switch of the switched mode power supply as a function of the determined reference voltage and the output voltage. Each voltage range is associated with a different reference voltage. Switched mode power supplies including the control circuits and methods implemented by the control circuits are also disclosed. |
申请公布号 |
WO2015103766(A1) |
申请公布日期 |
2015.07.16 |
申请号 |
WO2014CN70440 |
申请日期 |
2014.01.10 |
申请人 |
ASTEC INTERNATIONAL LIMITED |
发明人 |
XIANG, MAOXI;MA, JIANZHEN;HE, YUANDONG;FANG, HONGLIAN |
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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