Power conversion integrated circuit and method for programming

Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter

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363 97, 363131, 361 90, H02M 3335, H02M 324, H02H 320

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active

058597689

ABSTRACT:
A single input pin (48) provides multi-functional features for programming a power supply (10). By connecting the appropriate interface circuit (92, 100, or 112) to the single input pin (48), the power supply (10) is programmed for specific behaviors during power up and toggling of an on/off switch (96, 108). In one mode of operation a light emitting diode (106) in the interface circuit (100) is optically coupled to a microprocessor for signaling the closure of the on/off switch (108), allowing the microprocessor to control the power supply (10) through an opto-coupler (102). In another mode of operation, the single on/off switch (96) controls the power supply (10). In yet another mode of operation, Zener diode (118) in the interface circuit (112) controls the power supply (10) during brown-out and black-out conditions.

REFERENCES:
patent: 4980791 (1990-12-01), Alberkrack et al.
patent: 5313381 (1994-05-01), Balakrishnan
patent: 5335162 (1994-08-01), Martin-Lopez et al.
SGS-Thomson Microelectronics Data Sheet, "VIPer100, SMPS Primary I.C.", 14 pages.

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