By Topic

Multi channel PWM power invertors integrated in a switching power supply circuit

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
S. -I. Ohashi ; Hitachi Video Eng., Inc., Yokohama, Japan

A description is given of a PWM (pulse-width modulated) power inverter circuit integrated into a conventional switching power-supply circuit. The output current of the switching power supply is distributed to several output loads by a time-sharing scheme using a PWM switching network that uses input voltage values to determine which load is energized. This circuit configuration eliminates choke coils and pulse-width modulator circuits, which are indispensable in conventional PWM power inverter circuits. The method will increase power efficiency, the cost-performance ratio, and the compactness of resulting devices, e.g. consumer electronic products and robotic systems. To verify the proposed scheme, a three-channel inverter was constructed and its DC pulse and AC output characteristics were measured. The circuit was of the flyback type, its left side being the primary switching circuit and the right side containing the output switching circuits for positive and negative DC/pulse and AC output voltages. The maximum output power was 50 W, and the power efficiency was 60% (approximately) at the switching frequency of 50 kHz

Published in:

IEEE Transactions on Consumer Electronics  (Volume:35 ,  Issue: 1 )