SLVAFH6 November 2023 LM25066 , LM5066 , LM5066I , TPS25984 , TPS25985 , TPS25990 , TPS536C9T
VIMON-1, VIMON-2, VIMON-3, ... , and VIMON-N are the IMON voltage outputs from the individual eFuse modules as defined in Equation 8.
N is the number of current monitoring outputs, summed up using the summing amplifier. The voltage output of the summing amplifier in Figure 6-2 is described in Equation 9.
m1, m2, m3, ... , and mN are the different mathematical functions (f1, f2, f3, ... , and fN respectively) of RIN-1, RIN-2, RIN-3, ... , and RIN-N in Figure 6-2 as depicted in Equation 10.
m1, m2, m3, ... , and mN need to be selected in such a way that Equation 11 is satisfied.
Equation 11 simplifies Equation 9 to Equation 12.
ISYS_IN_GAIN, which needs to be programmed in the VR14 controller firmware to get the total platform current from the voltage at the ISYS pin, is obtained using Equation 13 in this architecture.
The procedure to compute m1, m2, m3, ... , and mN are discussed in Section 6.2.