In-circuit programming of output voltage and output current...

Details In-circuit programming of output voltage and output current... In-circuit programming of output voltage and output current...

2011-07-12

2011-07-12

Dinh, Son T (Department: 2824)

Static information storage and retrieval

Powering

C365S201000, C365S240000

Reexamination Certificate

active

07978558

ABSTRACT:
A primary-side regulation (PSR) controller integrated circuit includes a PSR CC/CV controller and a non-volatile shift register. An assembled power supply that includes the integrated circuit is in-circuit tested to determine errors in power supply output voltage and/or current. Programming information is determined and shifted into the shift register. During programming, the power supply regulates to a different output voltage, and the different voltage is used for shift register programming. After programming, the power supply operates in a normal mode so that the output voltage and current are within specification. The voltage and current to which the power supply regulates are set by some of the bits of the programming information. Other of the bits set error correction circuits of the PSR CC/CV controller such as a primary inductance variation compensation circuit, a line input voltage variation compensation circuit, an efficiency variation compensation circuit, and a cord resistance compensation circuit.

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