Synchronous switching power supply comprising buck converter

Details Synchronous switching power supply comprising buck converter Synchronous switching power supply comprising buck converter

1989-06-08

1992-11-17

Stephan, Steven L.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323285, 323299, 323349, G05F 1565

Patent

active

051646579

ABSTRACT:
The synchronous switching power supply can be employed in multiple output power supply systems requiring extremely high efficiency and low number of components. The input signal may be AC or pulsating DC. A single switch is switched at zero voltage and current. The short circuit protection is inherent. A switching power supply with buck converter includes a switch for selectively applying the input signal of one polarity to a node, an inductor coupled to the node for attaining a current, a rectifier coupled between the node and ground for conducting the current, a capacitor coupled between the inductor and ground for providing the output signal, a first comparator for comparing the input signal against a first signal, a second comparator for comparing the output signal against a second signal, and a control circuit responsive to the first and second comparators for controlling the switch.

REFERENCES:
patent: 4556838 (1985-12-01), Brasseur
patent: 4678983 (1987-07-01), Rouzies
patent: 4736286 (1988-04-01), Gulczynski
patent: 4803610 (1989-02-01), Gulczynski
patent: 4814687 (1989-03-01), Walker
patent: 4835454 (1989-05-01), White
patent: 4853837 (1989-08-01), Gulczynski

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