SLOSE75B February 2022 – March 2023 TAS2780
PRODUCTION DATA
The TAS2780 monitors the temperature of the internal power FETs. If the maximum continue power is high and power FETs temperature goes above a threshold, an internal protection circuit will trigger a thermal fold-back and, if temperature still increases, shutdown the device.
The protection mechanism is based on two thresholds TH1 and TH2. The TH1 threshold is set at a temperature 1160C higher than the temperature measured by the internal bandgap but not less than 2500C. The TH1 threshold triggers a thermal foldback.
The TH2 threshold is 400 C above TH1 and triggers thermal shutdown.
The two detection mechanisms can be disabled by setting bits TG_TH2 and TG_TH1 of register 0x47, page 0x01 to low.