The development of a power Darlington transistor and hybrid integrated circuit for a dc to dc converter
Abstract
A power Darlington transistor Subscrete and hybrid integrated circuit consisting of two of these in parallel with a fast recovery diode are described. The integrated unit is used as a dc-to-dc converter or 'chopper' to control the acceleration and speed of an electric car motor and can deliver 450 A of armature current. The Subscrete form permits full testing and matching of transistors before mounting on a common heat spreader. The thermal, mechanical, and electrical characteristics of the transistor Subscrete are discussed, together with the criteria used for matching and performance results obtained with the integrated circuit in a dc converter circuit.
- Publication:
-
PESC 1979; Power Electronics Specialists Conference
- Pub Date:
- 1979
- Bibcode:
- 1979ppes.conf...55K
- Keywords:
-
- Electric Motor Vehicles;
- Hybrid Circuits;
- Integrated Circuits;
- Speed Control;
- Transistor Circuits;
- Voltage Converters (Dc To Dc);
- Acceleration (Physics);
- Electrical Properties;
- Mechanical Properties;
- Product Development;
- Thermodynamic Properties;
- Electronics and Electrical Engineering