发明名称 |
METHOD AND CIRCUIT TO BIAS OUTPUT-SIDE PULSE WIDTH MODULATION CONTROL IN AN ISOLATING VOLTAGE CONVERTER SYSTEM |
摘要 |
The output-side referenced pulse width modulator (PWM) in an isolation-providing voltage converter receives at least initial bias voltage (Vbias) from a charge-pump like Vbias generator. The Vbias generator includes an input-side referenced periodic waveform generator whose output signal can be amplified differentially with an input-side referenced circuit and then AC-coupled via isolation-maintaining capacitors to an output-side referenced rectifier circuit whose output is Vbias. The Vbias thus generated can power the PWM at least from power-up through commencement of steady-state operation, when a more robust Vbias can be derived from the output-side voltage itself. Since the PWM is output-side referenced, high feedback bandwidth is maintained.
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申请公布号 |
US2002196642(A1) |
申请公布日期 |
2002.12.26 |
申请号 |
US20010888967 |
申请日期 |
2001.06.25 |
申请人 |
SWITCH POWER. INC. |
发明人 |
GODER DIMITRY;CARTIER STEVEN |
分类号 |
H02M3/07;H02M3/335;(IPC1-7):H02M3/335 |
主分类号 |
H02M3/07 |
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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