Texas Instruments Incorporated
Thermo-electric controlled switching circuit

Abstract:

A system on an integrated circuit (IC) chip includes an input terminal and a return terminal. A heater coupled between the input terminal and the return terminal. A thermopile is spaced apart from the heater by a galvanic isolation region. A switch device includes a control input coupled to an output of the thermopile. The switch device is coupled to at least one output terminal of the IC chip.