Quote from: unpainted on February 11, 2025, 09:57:15 PM

I can't help you much, but I recommend that you leave the TPS546 voltage settings as they are:
https://github.com/TinyChipHub/ESP-Miner-TCH/blob/master/main/TPS546.h#L26

It took me a little while to understand some of the TPS546 regulators settings because I didn't have enough information about it. This information is available here but I will explain it below for others to read:

https://www.ti.com/lit/gpn/tps546d24a

IMPORTANT: The TPS546 uses an internal voltage reference between 0.25v and 0.75v
The output voltage of the TPS546 is successfully set if the SCALE_LOOP * VOUT is within this reference voltage.

From the example below:
SCALE_LOOP of 0.50f * VOUT_MIN of 1.0f = 0.50f (this is right in the middle of the reference voltage so it is valid)
SCALE_LOOP of 0.50f * VOUT_MAX of 1.35f = 0.675f (this is also within the reference voltage so it is valid)
The INIT_VOUT_COMMAND sets the voltage of the TPS546 during initialization.

Only these settings should be changed as needed:
Settings I use on the LV08:

Code:

TPS546_INIT_SCALE_LOOP=0.50f,
TPS546_INIT_VOUT_MAX=1.35f,
TPS546_INIT_VOUT_COMMAND=1.2f,
TPS546_INIT_VOUT_MIN=1.0f,

The VOUT_MIN and VOUT_MAX set limits on the voltage output. Trying to set the VOUT above VOUT_MAX will result in no change. Trying to set the VOUT below VOUT_MIN will set the voltage to the INIT_VOUT_COMMAND setting.

The SCALE_LOOP and VOUT_COMMAND recommended range is near the bottom of page 26 of the reference data sheet linked above.

SCALE_LOOP can only be 1 of 4 values as far as I know (0.125, 0.25, 0.50 and 1.0).