Low power non-isolated driver

Details Low power non-isolated driver Low power non-isolated driver

2008-12-22

2011-12-06

Choi, Jacob Y (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C363S097000, C363S147000

Reexamination Certificate

active

08072160

ABSTRACT:
The present invention mainly discloses low power non-isolated driver that can be used for LED lighting and other non-isolated power supply appliance, in which the input side is connected to an AC or DC input, a PWM control circuit is connected to the buck converter switch, a capacitor filters the output voltage ripple and an output voltage/current control circuit provides feedback signal to the PWM control circuit. The present invention has such features of less component number, low total cost, high reliability, and better line/load regulation.

REFERENCES:
patent: 5313381 (1994-05-01), Balakrishnan
patent: 6324079 (2001-11-01), Collmeyer et al.
patent: 6775164 (2004-08-01), Wong et al.
patent: 7321206 (2008-01-01), Kang et al.
patent: 2003/0174005 (2003-09-01), Latham et al.
patent: 2010/0052631 (2010-03-01), Wu et al.

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