TPSM82866A: TPSM82866AA0HRDMR

ramakrishna ch

Part Number: TPSM82866A

Tool/software:

Hi Team,

Regarding TPSM82866AA0HRDMR, How to caluculate the Load regulation, line resulation, Ripple and DC accuracy for my selected voltages levels?

Please help me.

4 months ago

0 Chris Glaser 4 months ago

TI__Guru*** 147230 points

Hi,

The load and line regulation are very small for this device, and the load regulation is specified in the D/S and shown with a graph later on.

The DC accuracy is always specified in the D/S. If you use a voltage divider to set Vout, this app note calculates the additional error from the 2 resistors: https://www.ti.com/lit/an/slva423/slva423.pdf

The ripple needs to be measured or simulated and strongly depends on your output capacitor and its ESL and ESR.

Thanks,

Chris

0 ramakrishna ch 4 months ago in reply to Chris Glaser

Prodigy 130 points

Hi,

Thank you

I am using TPSM82866AA0HRDMR. I am setting this 4.2V@6Amps. How to caluculate the VSET/MODE resistor value?

Thanks & Regards,

Ramakrishna

0 Chris Glaser 4 months ago in reply to ramakrishna ch

TI__Guru*** 147230 points

Hi Ramakrishna,

Since 4.2V is not one of the VSET presets, you need to tie VSET/MODE to either Vin or GND and attach a voltage divider according to the D/S:

Chris

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TPSM82866A: TPSM82866AA0HRDMR