APPARATUS FOR DETECTING TEMPERATURE OF SEMICONDUCTOR ELEMENTS FOR POWER CONVERSION

摘要

An apparatus for detecting temperatures of power-conversion semiconductor elements, which is applicable to a system including a plurality of power-conversion semiconductor elements and a plurality of temperature signal outputs for outputting temperature signals correlated to temperatures of the respective semiconductor elements. In the apparatus, the temperature signal outputted from at least one of the temperature signal outputs is input directly to a microcomputer without passing through at least one input-output interface. The temperature signals outputted from the other two or more temperature signal outputs are input to a plurality of input ports of the at least one input-output interface sequentially connected to an output of the interface. The microcomputer detects the temperatures of the respective semiconductor elements based on the temperature signals received from the output port of the at least one input-output interface and the temperature signal received directly from the at least one of the temperature signal outputs.

主权项

1. An apparatus for detecting temperatures of power-conversion semiconductor elements, the apparatus being applicable to a system including a plurality of power-conversion semiconductor elements that produce heat when energized, a plurality of temperature signal outputs associated with the respective power-conversion semiconductor elements, the temperature signal outputs being configured to output temperature signals correlated to temperatures of the respective power-conversion semiconductor elements, the apparatus comprising:
a microcomputer configured to detect the temperatures of the respective power-conversion semiconductor elements based on the temperature signals outputted from the respective temperature signal outputs, and at least one input-output interface having a plurality of input ports and an output port selectively connected to one of the plurality of input ports, wherein the temperature signal outputted from at least one of the plurality of temperature signal outputs is input directly to the microcomputer without passing through the at least one input-output interface, the temperature signals outputted from the other two or more temperature signal outputs are input to the respective input ports of the at least one input-output interface, the microcomputer is configured to detect the temperatures of the respective power-conversion semiconductor elements based on the temperature signals received from the output port of the at least one input-output interface and the temperature signal received directly from the at least one of the plurality of temperature signal outputs.