SLVUD02 April 2025
The TPS7H3024EVM-CVAL board allows Channel 3 and 4 to be configured for sensing negative rails. This is done by removing a 0-ohm resistor that connects from the SENSEx resistor dividers to GND and replacing it with a 0-ohm resistor that instead sets VLDO as the reference. The datasheet contains more detailed information and equations for how to select appropriate resistor values when using this configuration.
Figure 1-2 Negative Rail Sensing Circuitry