A high-voltage integrated circuit for power supply applications

A new high-voltage integrated circuit (HVIC) is described which controls either PWM or Resonant half-bridge circuit topologies for power supply applications at frequencies up to 1 MHz. The HVIC technology allows the two power FETs in half-bridge circuit arrangements to be driven from a single silico...

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Bibliographic Details
Main Authors: Steigerwald, R. L., Kuo, M. H., Claydon, G. S., Routh, K. C.
Format: Conference Proceeding
Language:English
Subjects:
Field effect transistors
Logic gates
Low voltage
Power supplies
Pulse width modulation
System-on-chip
Voltage-controlled oscillators
Online Access:Request full text
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Description
Summary:A new high-voltage integrated circuit (HVIC) is described which controls either PWM or Resonant half-bridge circuit topologies for power supply applications at frequencies up to 1 MHz. The HVIC technology allows the two power FETs in half-bridge circuit arrangements to be driven from a single silicon chip thus eliminating external, isolated gate drivers. Isolation for the "upper" FET gate driver is achieved on-chip using the HVIC technology. Communication with the "upper" gate drive is also achieved with an on-chip high voltage transistor operated as a current source. The chip has the usual power supply control functions (including current-mode control) as well as a voltage-controlled oscillator (VCO) for resonant converter control. In addition, a novel pulse detector circuit is included to allow the chip to receive isolated pulses from a secondary side control, thus achieving simple digital isolation between primary and secondary.
ISSN:1048-2334
2470-6647
DOI:10.1109/APEC.1987.7067154