PWM (Pulse Width Modulated) power invertor
circuits are integrated in a conventional
switching power supply circuit. The output
current of the switching power supply is
distributed to plural of output loads in time
sharing by PWM switching network according to
the corresponding input signals.This new circuit
configuration, eliminates choke coils and pulse
width modulator circuits,which are indispensable
in conventional PWM power inverter circuits. The
new method will improve power efficiency, cost
performance ratio and compactness of size of
apparatuses such as consumer electronic products,
VCR for instance, Car Electonics and Robotic
systems where power channel for motor controller
plays important role in addition to DC power
supplies.