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Hi Sir
My customer device request ramp time as below. May TPS40425 can support?
Condition TPS40425 Vin is 12V vout is 3.3V @0.66ms~10ms and 0.8V@ 0.05ms ~10ms.
If yes, how to set up in circuit? or here have other suggestion solution?
PS: Vout load are 0.8V/18.85A and 3.3V/49.9A
Bogey
Hi Bogey,
The PMBus register TON_RISE (61h) can be used to set soft-start time.
The soft-start time can be programmed from 0.6ms to 9ms.
You also can use TI Fusion to set soft-start time easily.
Thanks
Qian
Hi Qian
More few questions,
Can you told me the default soft-star timing ?
How to use TI Fusion to set the soft-star timing?
If the timing can’t meet the requirement, we should be follow the below flow. Right?
Power up 12V feed to VDD of TPS40425à Program register TON_RISE(61h) to the soft star is around 2msàenable TPS40425
We only connect the CNTL1 for enable function, right?