Heat Transfer and Power Decoupling Assembly
Original Publication Date: 1984-Jan-01
Included in the Prior Art Database: 2005-Feb-02
An assembly, comprising differently shaped metal sheets 1 (Figs. 1, 2) of beryllium, copper or a similar metal, is mounted between the upper surface of the chip 2 and several substrate power pins 3 to provide a cheap cooling means. One group of power pins 3, required for one voltage level, is connected to one metal sheet 1. Metal sheets 1 are separated by ceramic disk capacitors 4. The heat transfer and power decoupling assembly is pressed on to power pins 3, using the spring washer technique. The largest group of power pins, which is connected to one voltage level, extends through and is soldered to a metal cap. The assembly has good decoupling properties. Low-inductance metal sheets 1 are connected to ceramic disk capacitors 4, forming a multilayer high-frequency decoupling assembly.