A high frequency, high power miniature DC to DC power supply utilizing MCM-L technology

Abstract

Harris Semiconductor participates in the Intelligent Power (IP) market, delivering various products used in industrial and commercial power supplies and power control systems. Intelligent Power refers to the integration of analog, logic, and high power handling circuits into a single chip. Harris Semiconductor's expertise in this arena has produced products which can deliver voltages up to 100 VDC and currents in excess of 10 amperes with switching speeds under 3 nanoseconds. Switching high currents this quickly can cause damaging voltage spikes when encapsulated in plastic packages. Much of our IP customer base is concerned with power supply size and efficiency. The subtleties of developing a power supply that transcends these issues can derail even the best die and package design efforts. To assist in our customers' system-level solutions, Harris is combining our Intelligent Power devices with other normally discrete components into a low cost, high performance laminate Multi-Chip Module (MCM-L) embodiment of a major power supply building block. This paper describes Harris' effort from the problem statement to the comparative physical and performance results of the solution.