Can we disable SW/LDO for unused Output of MMPF0100?

[mrudangshelat]

Hi,

I am making new design on iMX6 processor and using Power Management using MMPF0100. Now There are few voltage output available which I am not going to use in my design. So, Can we disable SW / LDO for unused Output of MMPF0100?

[reyes · Accepted solution]

Hi,

Complementing Sinan Akman answer, in order to disable unused SWx output voltage regulator you would need to set SWxMODE bits [3:0] to “0” (0000b).

To disable unused LDO regulators you need to set VGENxEN bit to “0”.

And about how to properly terminate the pins for the unused regulators, please take a look at Table 1 of the application note AN4717 “Schematic Guidelines for the MMPF0100” under the “Recommended connection when not used” column.  http://cache.nxp.com/files/analog/doc/app_note/AN4717.pdf

Have a great day,
Jose Reyes

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[mrudangshelat]

Thanks Jose and Sinan.

[sinanakman]

Hi Mrudang

From the data sheet :

"... any regulator whose SWxOMODE bit is set to “0” will be turned off"

Also check VGENxEN which enables or disables VGENx output.

You could program your PF100 accordingly.

Hope this helps.

Regards

Sinan Akman