I have questions about TPS65261-1.
We want to know about minimum soft-start time.
- Please tell us the soft-start time(minimum / typical / maximum).
Best Regards,
Takahiro Nishizawa
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I have questions about TPS65261-1.
We want to know about minimum soft-start time.
- Please tell us the soft-start time(minimum / typical / maximum).
Best Regards,
Takahiro Nishizawa
Hi, Nishizawa-san
The soft-start time doesn't have MAX and MIN value limitation.
It is determined by Vout, Cout, OC limit.
Calculation:
Co*Vo=Icharge*tss --> Icharge=Co*Vo/tss
Generally, we set Cout charging current Icharge = about 0.5A, so we can get proper tss value.
Hi,
Generally, the SS time is determined by Vout, Cout, OC limit.
When SS pin is floating, the SS voltage will rise up high quickly, the inductor current will climp up to OC limit quickly too, so the startup time will be determined by Vout, Cout.
Actually, when SS pin is floating, there is no soft start function, strongly recommend don't float SS pin.