TPS650864: Ramp time of all the Bucks and Load switch of TPS65086401 and DC-DC converters (TPS543B20RVF and TPS566238PRQ)

Hi,

We are using TPS65086401 along with DC -DC converters TPS543B20RVF (12VDC to 0.85V DC) and TPS566238PRQ (5VDC to 0.9V Supply) to power up our Xilinx FPGA XCZU11EG-2FFVC1760I which requires a ramp time of 200 µS to 40 mS. The details of Bucks used in PMIC TPS65086401 are as follows:-

1) Buck 1 (O/P:1.8V using external mosfet from 12VDC supply)

2) Buck 2 (O/P:0.85V using external mosfet from 12VDC supply)

3) Buck 3 (O/P:0.85V, input(PVIN3): 5VDC)

4) Buck 4 (O/P:3.3V), input(PVIN4): 5VDC)

5) Buck 5 (O/P:3.3V), input(PVIN5): 5VDC)

6) Buck 6 (O/P:1.2V using external mosfet from 12VDC Supply)

7)SWB1 and SWB2(1.8V) , input from Buck1

Please share the minimum and maximum ramp time of output Power supplies in TPS65086401 ,TPS543B20RVF  and TPS566238PRQ . The  output supplies used of all DC-DC converters and PMIC are mentioned above. Also let us know, how we can change/modify the ramp  time in these DC-DC converters(TPS543B20RVF  and TPS566238PRQ) and PMIC (TPS65086401) ?

Regards

Santosh Kr. Singh