I noticed that you entered 20 x 47uF output capacitors in the Excel sheet, but I don't see them on the schematic. Can you confirm if this is correct? If it is, then that’s fine.

For the 0.8V rail, since it operates in 1-phase, please either short MSEL2 to GND or populate the bottom resistor (R1100) with a 0 Ohm resistor.

For the 1.25V rail, since it operates in 2-phase, short MSEL2 to GND, and you can DEPOP R1133.

Everything else looks good.

Thank you,
Tomoya

0 Jeff YANG over 1 year ago in reply to Tomoya Ide

Mastermind 8070 points

Hi Tomoya,

Thanks for the review result.

I still have question about the defalut output voltage. I found table 7-12/7-13 VSEL can set defalut output voltage.

If we want set default power on Vout=0.8V and Vout=1.25V.

How to we set VSEL divider resistor? I'm confuse about table table 7-12/7-13 setting. Seems it need also match with other register setting?

Thanks!

Jeff

+1 Tomoya Ide over 1 year ago in reply to Jeff YANG

TI__Genius 11416 points

Hi Jeff,

To set Vout to 0.8V, you will need a 14.7 kOhm resistor to AGND.

To set Vout to 1.25V, you will need an 82.5 kOhm resistor to AGND.

Here is an example for setting Vout to 0.75V:

However, the second tab in the Excel calculator ('Pin Detect Programming') helps you with this so you don't have to refer to the table and do calculation yourself.

Thank you,
Tomoya

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TPS546D24A: schematic review