HVIC primary side power supply controller including full-bridge/

Details HVIC primary side power supply controller including full-bridge/ HVIC primary side power supply controller including full-bridge/

1990-02-26

1990-10-30

Stephan, Steven L.

Electric power conversion systems

Current conversion

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

363 98, 363132, H02M 3335

Patent

active

049673327

ABSTRACT:
A primary side power supply controller includes a full-bridge/half-bridge driver and is capable of being implemented on a single HVIC chip. Control circuitry enables operation in PWM, resonant, and phase-shift control modes. In the phase-shift control mode, a phase shift generator receives two input pulse train signals and generates two output pulse train signals, each having a 50% duty cycle, which are phase-shifted in a range from 0 to 180.degree. by an amount proportional to the duty cycle of the input pulse train signals and also proportional to the power supply load requirement. Dead time circuitry for ensuring that no two switching devices in a half-bridge, or in the same leg of a full-bridge, are conductive simultaneously employs a symmetrical delay circuit which independently delays the rising and falling edges of each signal pulse.

REFERENCES:
patent: 4628426 (1986-12-01), Steigerwald
patent: 4683528 (1987-07-01), Snow et al.
patent: 4685040 (1987-08-01), Steigerwald
patent: 4694384 (1987-09-01), Steigerwald et al.
patent: 4758940 (1988-07-01), Steigerwald
R. L. Steigerwald, M. H. Kuo, G. S. Claydon, K. C. Routh, "A High-Voltage Integrated Circuit for Power Supply Applications", Mar. 1987, IEEE Applied Power Electronics Conference, pp. 221-229.
K. D. T. Ngo, R. L. Steigerwald, A. J. Yerman, M. H. Kuo, "A High Density Resonant Power Supply Using High-Voltage IC", Proceedings of HFPC, May 1987, pp. 244-257.
R. A. Fisher, K. D. T. Ngo, M. H. Kuo, "A 500 KHz, 250W DC--DC Converter With Multiple Outputs Controlled by Phase-Shifted PWM and Magnetic Amplifiers", May 1988 High Frequency Power Conversion Conference, pp. 100-110.
D. F. Henderson, "An HVIC MOSFET/GT Driver for Half-Bridge Topologies", May 1988, High Frequency Power Conversion Conference, pp. 237-245.

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