Title :
A single chip 1 MHz 500 V full/half bridge driver and primary side power supply controller HVIC capable of multiple modes of operation
Author :
Claydon, Glenn ; Laughton, William
Author_Institution :
General Electric Corp. Res. & Dev., Schenectady, NY, USA
Abstract :
A high-voltage IC (HVIC) capable of controlling and driving power FETs in both full- and half-bridge power circuits employing either pulse width modulation (PWM) or resonant circuit topologies is discussed. The IC also includes a voltage-controlled oscillator capable of varying pulse width and/or frequency, thus providing a means of resonant converter control. High-voltage isolation (500 V) and level shifting for upper-side FETs is achieved on-chip, and 1 MHz operation driving four NMOS with 1000 pF gates has been demonstrated. Several power supply control and housekeeping functions are included on the chip. A window comparator which detects and reconstructs isolated pulses from a secondary side control is also included on-chip, thus providing a means of communication between the primary and secondary sides of the power supply. The combination of 15 V control logic with both high-voltage and low-voltage drivers enables this HVIC to be a single-chip primary-side controller for a variety of power circuit topologies.<>
Keywords :
controllers; field effect transistors; power control; power integrated circuits; power supplies to apparatus; power supply circuits; power transistors; 1 MHz; 15 V; 500 V; HVIC; NMOS; PWM; bridge circuits; control logic; drivers; gates; isolation; level shifting; power FETs; power IC; primary side power supply controller; resonant circuit topologies; secondary side; Bridge circuits; Circuit topology; Communication system control; Driver circuits; FETs; Pulse circuits; Pulse width modulation; Pulsed power supplies; RLC circuits; Space vector pulse width modulation;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1990. APEC '90, Conference Proceedings 1990., Fifth Annual
Conference_Location :
Los Angeles, CA, USA
DOI :
10.1109/APEC.1990.66450