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- W4387231750 abstract "Die temperature (Tj) measurement of GaN HEMTs is of high interest to enable reducing design margin and the implementation of reliability driven control schemes and protections. On-state resistance (Rds,on) has been identified as a relevant thermo-electric sensitive parameter (TSEP) for Tj measurement requiring no extra temperature sensor. It is commonly measured in time-domain, based on the on-state voltage drop and the load current. In this work, the Tj of a GaN-on-Si power IC in a dc-dc converter is deduced from measurements conducted online, directly in the frequency domain using RF injection and S-parameter measurements. Thereby, the stimulus is injected on top of the processed power to probe either Rds,on, or the resistance of an on-chip Schottky diode used as thermal sensor. Temperature dependent experimental validation up to 150 °C is performed on a switching dc-dc power converter, validating the approach for online temperature measurement using RF injection." @default.
- W4387231750 created "2023-10-02" @default.
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- W4387231750 date "2023-10-01" @default.
- W4387231750 modified "2023-10-07" @default.
- W4387231750 title "Online die temperature measurement using S-parameters in GaN-based power converters" @default.
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- W4387231750 doi "https://doi.org/10.1016/j.microrel.2023.115085" @default.
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