DC/DC Converter

Details DC/DC Converter DC/DC Converter

1981-03-30

1982-10-05

Shoop, William M.

Electric power conversion systems

Current conversion

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

363 49, 363 97, 323901, H02M 3335

Patent

active

043531148

ABSTRACT:
A DC/DC converter is disclosed for converting a DC input voltage of one magnitude into at least one DC output voltage of a different magnitude. The converter includes a pulse generator for producing a train of pulses of variable pulse widths, an electronic switch connected to receive the pulses and to switch the input voltage across the primary winding of a transformer, and a rectifier and filter connected to the secondary winding of the transformer for rectifying and filtering the output voltage. Voltage regulation is effected by deriving a signal dependent upon the output voltage(s) and applying the signal fo the pulse generator to vary the pulse widths. The pulse generator receives a supply voltage that is derived from the output voltage. A start-up circuit is provided to supply the pulse generator during an initial power-up period. The DC/DC converter also includes an over-voltage protection circuit, a soft-start circuit and an external clock synchronization circuit.

REFERENCES:
patent: 4266268 (1981-05-01), Tkacenko
Regan et al., "Designs for VMOS Push-Pull Converters", Elec. Engineering, vol. 52, No. 638, May 1980, pp. 87-96.
Elektronik Magazine, 1978, Issue 14, pp. 72-73.
Texas Instruments Application Report "Designing Switching Voltage Regulators with TL494", TI Bulletin CA-198, pp. 1-11.

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