发明名称 |
METHOD OF REGULATING AN OUTPUT VOLTAGE OF A POWER CONVERTER BY CALCULATING A CURRENT VALUE TO BE APPLIED TO AN INDUCTOR DURING A TIME INTERVAL IMMEDIATELY FOLLOWING A VOLTAGE SENSING TIME INTERVAL AND VARYING A DUTY CYCLE OF A SWITCH DURING THE TIME INTERVAL FOLLOWING THE VOLTAGE SENSING TIME INTERVAL |
摘要 |
The output voltage of a power converter is regulated by comparing the output voltage to a target output voltage during a first time interval and calculating an inductor current required in a second time interval immediately following the first time interval to increase the output voltage to the target output voltage in the second time interval. The duty cycle of a switch in the power converter is varied to modify the current in the inductor during the second time interval according to the calculated next current and a saturation current of the inductor. In one embodiment the power converter includes a reference resistor. By measuring the voltage across the reference resistor at certain times various parameters, including coil inductance and capacitor capacitance, are calculated. In some embodiments a linear model of the power converter is used.
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申请公布号 |
US6909266(B2) |
申请公布日期 |
2005.06.21 |
申请号 |
US20020296000 |
申请日期 |
2002.11.14 |
申请人 |
FYRE STORM, INC. |
发明人 |
KERNAHAN KENT;FRASER DAVID F.;ROAN JACK |
分类号 |
H02M3/157;(IPC1-7):G05F1/40;G05F1/10 |
主分类号 |
H02M3/157 |
代理机构 |
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主权项 |
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