Control circuit and method for a power converter

Details Control circuit and method for a power converter Control circuit and method for a power converter

2011-01-25

2011-01-25

Riley, Shawn (Department: 2838)

Electricity: power supply or regulation systems

In shunt with source or load

Using diode

C323S283000

Reexamination Certificate

active

07876075

ABSTRACT:
A control circuit and control method for a power converter detects change of the output voltage of the converter, and performs the time-optimal control function when the change exceeds the default value. According to the voltage slew rate detected at the time of the change exceeding the default value, a time interval T1from the change exceeding the default value being detected to the current of the inductor rising to be the same as the output current of the converter is estimated, and the time intervals T2and T3are figured out based on the time interval T1. The parasitic resistance of the output capacitor of the converter is taken into account during estimating process such that even if the output capacitor has larger parasitic resistance, the output voltage can be back to the steady state value accurately to avoid the time-optimal control being triggered repeatedly.

REFERENCES:
patent: 6040688 (2000-03-01), Strubin

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