Inverter controller with feed-forward compensation

Details Inverter controller with feed-forward compensation Inverter controller with feed-forward compensation

2007-06-19

2007-06-19

Chen, Shih-Chao (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C363S021090

Reexamination Certificate

active

11199906

ABSTRACT:
The present invention is an inverter controller with feed-forward compensation. The inverter controller includes an error amplifier, a high frequency oscillator (HFOSC) with feed-forward compensation, a comparator, and a driver. The error amplifier can output a signal independent on the variation of a supply voltage. The HFOSC can generate a saw-tooth signal with a constant frequency and an amplitude proportional to the supply voltage. The comparator can compare the signal with the saw-tooth signal and generate a pulse width modulation signal whose duty cycle varies with the variation of the supply voltage. The driver receives the PWM signal and provides a proper pulse width modulation signal to drive an external inverter.

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