TPS546D24A: Measured current by READ_IOUT command(8Ch)

Hi Shunsuke,

The READ_IOUT output value is the average current, not peak or valley. 

Command 8C (READ_IOUT) uses the data format "SLINEAR11"  Where the 16-bit word is separated into 2 two's compliment signed values. 

Bits 15:11 provide the exponent value in 2s compliment encoding, supporting values from -16 to +15.

Bits 10:0 provide the Mantissa in two's complement signed values from -1024 to +1023

You will likely need a translation function to convert from SLINEAR11 to a floating point value.  It is important that the translation function recognize signed Mantissa values or small negative current values will be reported as extremely large positive currents.

Here is an article on translating SLINEAR11 values into floating point values - https://embeddedartistry.com/blog/2018/07/05/linear11-conversion-using-a-sign-extension-bit-twiddling-hack/  

Thank you,
Tomoya