Other Parts Discussed in Thread: TPS53681, CSD95491Q5MC,
Hi E2E team,
We are using a TPS53681 in 2+1 mode:
- Loop1: 2 phases: CSD95491Q5MC
- Loop2: 1 Phase: CSD95496QVM
Loop1: Vout: 0.9V/40A max non transient requierement, Voltage Tol +/-5%
Loop2: Vout: 1.8V/8A max non transient requierement, Voltage Tol +/-5%
I have some difficulties to choose theInductor and number of Output Caps for each phase, Could you advise us ?
Regarding the Inductance, I used this: equation below from TPS53681 datasheet
In my case:
LOOP1:
Ipp: (40/2)*0.3=6A
Vin (max)=12
Vout=0.9
FSW: 600Khz
- L=231nH (250nH is chosen)
LOOP2:
Ipp: (8/1)*0.3=2.1A
Vin (max)=12
Vout=1.8
FSW: 600Khz
- L=1.214uH (I don’t know if I can use this value)
Best Regards
Sebastien
