SLVSHR0 May 2025 TPS2HCS08-Q1
PRODUCTION DATA
The TPS2HCS08-Q1 provides an output voltage measurement per channel through the integrated 10-bit ADC.
The output voltage measurement function is disabled by default. To enable the output voltage sense function it needs to be globally enabled in the ADC_CONFIG register through the ADC_VSNS_DIS bit. If the global bit is enabled then the device will enable the output voltage measurement on each channel according to the VSNS_DIS_CHx bit in the respective CHx_CONFIG register.
The conversion equation for the output voltage measurement is detailed in Equation 10. The ADC measurement result will be available in the ADC_RESULT_CHx_V register. The VSNS_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 output voltage measurement, if enabled, will be disabled for all the channels and the VSNS_RDY_CHx bit will be 0. Once the channel(s) exit the I2T loop (I2T_MOD_CHx = 0), then the output voltage measurement will be automatically re-enabled if previously enabled before the I2T event.
The output voltage measurement is referenced to the device ground so if there is a ground network used for reverse battery then there can be an offset in the voltage measurement.