High-precision current-mode pulse-width-modulation circuit

Details High-precision current-mode pulse-width-modulation circuit High-precision current-mode pulse-width-modulation circuit

2006-04-25

2006-04-25

Davis, George (Department: 2129)

Data processing: artificial intelligence

Neural network

Structure

C706S034000, C327S103000, C327S172000

Reexamination Certificate

active

07035835

ABSTRACT:
A current-mode pulse-width-modulation (PWM) circuit converts analog current signals into pulse signals. The PWM circuit includes a first I-V converter and one or more second I-V converters, each of the one or more second I-V converters being coupled to one of the current signals. Each of the first and second I-V converters is also coupled to a current generator which generates a current that linearly changes with time. For each of the first and second I-V converters, when a polarity of the input current thereof changes, an output changes between a high voltage level and a low voltage level. A logic circuit is coupled to the first and each second I-V converter to obtain a pulse signal that has a pulse width linearly proportional to the current level of the respective current signal.

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Kazmierkowski et al, “Current Control Techniques for Three-Phase Voltage-Source PWM Convertors: A Survey”, IEEE Transactions on Industrial Electronics, Oct. 1998.

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