Self-adjusting switched mode power supply

Details Self-adjusting switched mode power supply Self-adjusting switched mode power supply

1985-04-23

1987-02-24

Wong, Peter S.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 97, 363131, H02M 3335

Patent

active

046462180

ABSTRACT:
In a switched mode power supply wherein an integrated circuit (IC) controller monitors and regulates power supply operation, a self-adjusting circuit compensates for variations in controller operation and ensures stable power supply operation. The output voltage of the power supply's transformer is compared to a reference voltage in generating an error signal which is fed back to the controller IC for regulating its operation. The self-adjusting circuit is impedance-matched with and provides an extremely high DC control gain to the controller IC's control input pin so as to simulate a manual adjustment arrangement, the need for which is eliminated by the automatic, self-adjusting circuit which maintains the AC impedance defined to ensure stable operation of the switched mode system.

REFERENCES:
patent: 4228493 (1980-10-01), de Sartre et al.
"Flyback Converters: Solid-State Solution to Low-Cost Switching Power Supplies", by Robert J. Boschert, Electronics, Dec. 21, 1978, vol. 51, No. 26.

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