发明名称 |
Combined PWM-FM control method and circuit for the high efficiency control of resonant switch mode inverters/converters |
摘要 |
A PWM-FM control method and circuit is employed to control the output level of a resonant switch-mode inverter/converter. The frequency of the inverter/converter is controlled via a nonlinear function shaper and VCO or ICO by the same voltage which controls the pulse-width such that the turn-on of the controlled switching element(s) always occur(s) at substantially zero voltage and substantially zero current across the switching element(s), thereby minimizing switching losses and maximizing efficiency.
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申请公布号 |
US4700285(A) |
申请公布日期 |
1987.10.13 |
申请号 |
US19860932453 |
申请日期 |
1986.11.18 |
申请人 |
NATIONAL SEMICONDUCTOR CORPORATION |
发明人 |
SZEPESI, TAMAS S. |
分类号 |
H02M7/538;(IPC1-7):H02M7/539 |
主分类号 |
H02M7/538 |
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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