Bond wireless power module with double-sided single device cooling and immersion bath cooling

摘要

A wire bond free power module assembly consists of a plurality of individual thin packages each consisting of two DBC wafers which sandwich one or more semiconductor die. The die electrodes and terminals extend through one insulation covered end of the wafer sandwich and the outer sides of the sandwiches are the outer copper plates of the DBC wafers which are in good thermal communication with the semiconductor die but are electrically insulated therefrom. The plural packages may be connected in parallel by lead frames on the terminals and the packages are stacked with a space between them to expose both sides of all packages to a cooling medium, either the fingers of a conductive comb or a fluid heat exchange medium.