SLUSCC7C July 2016 – June 2018 TPS546C23
This bit configures the measurement system for fast, VOUT-only measurement mode. Setting this bit disables READ_IOUT, and READ_TEMPERATURE_1, and instead allows the device to update READ_VOUT more frequently. This bit does not have EEPROM backup.
|0||Measure VOUT, temperature, and IOUT|
|1||Measure only VOUT|
For READ_VOUT, multiple samples (defined by AVG_PROG[1:0] Bits) are obtained and averaged. When entering and exiting VSM mode, the first calculated result could lose one sample, for example, 7 sampled value but averaged by 8, resulting the first updated READ_VOUT data point have worst case error about 1/8 of the nominal value.