New intelligent power multi-chips modules with junction temperature detecting function

A new IGBT-IPM named R-IPM has been developed. This R-IPM consists of only silicon semiconductors chips, so called IPMCMs (intelligent power multi-chip modules). The exclusive monolithic IC used in the R-IPM provides over-temperature protection by directly detecting the junction temperature T/sub j/of the IGBT chips. This new T/sub j/ detection is the first of its kind. This paper describes the R-IPM and its T/sub j/ detecting technology.