Method of driving a power converter

Details Method of driving a power converter Method of driving a power converter

1996-07-02

1998-01-06

Sterrett, Jeffrey L.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 37, 363 98, 363132, H02M 7219

Patent

active

057061890

ABSTRACT:
Disclosed is a method of driving a power converter which can simplify a charging sequence of a charge pump capacitor to reduce the time required to design the device without using a voltage protective circuit and optimum design required to determine the capacitance of the charge pump capacitor. A charging pulse signal for a capacitor (CP) is provided as an input signal from an external control device (EC) substantially simultaneously as a control power source (PS) is switched on to provide a predetermined control power source voltage (V.sub.PS). A driver circuit (DR20) outputs a control signal (V.sub.D) to turn on a transistor (Q2) in a pulse-like manner, starting charging the capacitor (CP). The charging pulse signal continues being provided after completion of the charging of the capacitor (CP) and stops being provided immediately before a PWM signal is provided.

REFERENCES:
patent: 4794508 (1988-12-01), Carroll
patent: 5155670 (1992-10-01), Brian

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