Tool/software:
Hi, I am using the TPS51200AQDRCRQ1.
What is the soft start time (Tss)?
In the datasheet, under section 7.4.2 Tracking Startup and Shutdown, the formula for Tss is given as:
Tss = (COUT × VO) / IOOCL
I have the following values:
COUT = 30 µF
VO = 0.6 V
However, I am unable to find the value of IOOCL.
Could you please help me locate or calculate it?
Hi Rakesh,
This thread explains a bit more about IOOCL: https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/447028/tps51200---about-tss?tisearch=e2e-sitesearch&keymatch=TPS51200%20tss#
In the thread, the spec IVOSRCL is mentioned and if we search that in the TPS51200A-Q1 data sheet this is what we find (click to enlarge image):
The only issue is that there's no typical value for this part so you might have to do some worst case analysis or just estimate in the middle for IVOSRCL.
Regards,
James
