SLVSHR0 May 2025 TPS2HCS08-Q1
PRODUCTION DATA
The TPS2HCS08-Q1 provides a drain-to-source voltage (VDS) measurement per channel through the integrated 10-bit ADC.
The VDS voltage measurement function is disabled by default. To enable the VDS voltage sense function it needs to be globally enabled in the ADC_CONFIG register through the ADC_VDS_DIS bit. If the global bit is enabled, then the device will enable the VDS voltage measurement on each channel according to the VDS_SNS_DIS_CHx bit in the respective CHx_CONFIG register.
The conversion equation for the VDS voltage measurement is detailed in Equation 12. The VDS conversion equation is only valid for VDS voltages up to 1.5V. The ADC measurement result will be available in the ADC_RESULT_CHx_VDS register. The VDSSNS_RDY_CHx bit is set to 1 if a new ADC conversion result exists since the register was last read. If any of the channels are in the I2T loop (I2T_MOD_CHx = 1), the VDS voltage measurement, if enabled, will be disabled for all the channels and the VDSSNS_RDY_CHx bit will be 0. Once the channel(s) exit the I2T loop (I2T_MOD_CHx = 0), then the VDS voltage measurement will be automatically re-enabled if previously enabled before the I2T event.