Support in selecting EVM's of PMIC

 Harsh,

It depends on what type of test process you are looking for. If you want to understand the specifics of the EVM (schematic, setup procedure, etc.), each EVM has a user's guide on the product page. This will tell you how to set up and use the EVM.

If you're looking for general PMIC test processes, we have many documents depending on what type of test you are looking for. These are general processes which would apply to any device.

Measuring efficiency: http://www.ti.com/lit/slva606
Measuring voltage ripple: e2e.ti.com/.../2243.understanding-measuring-and-reducing-output-voltage-ripple
Measuring phase/gain response of a buck: http://www.ti.com/lit/snva364

Or if you want something else specifically, you could try searching for it on ti.com. Let me know if this helps.

Regards,
Karl

Hi Harsh,

We are in the process of switching the controller that is shipped with the TPS65217CEVM. The newer stock ships with USB2ANY, and uses the IPGUI software. The older stock ships with an older controller which uses the TPS65217 EVM Software: www.ti.com/.../slvc402

These are not necessary to use the EVM, but makes it easy to configure the device using I2C. But if you have another I2C master that you prefer, you can connect it to the I2C pins on the connector to communicate to the device.

Regards,
Karl

Hi K Harshavardhan, thanks for asking your question.

This question is not related to the original question you asked, so next time you can click the "Ask Another Question" option to start a new thread.

However, no need to do this now since I will follow-up in this thread on the new question.

I see no issues with the WLED settings you have selected, and I have been running my TPS65217CEVM with these settings for the last hour or so without issue.

There are 2 reasons for your issue that I can think of, but they are not actually related to the LED driver:

1. The current limit on your DC power supply is too low (connected to AC, pin 2 of J3, and a nearby GND, pin 1 of J4 for example) - if your current limit is below 300mA your DC supply may droop or turn off, causing the PMIC to reset. This is an estimate, but >300mA should be high enough without any other loads on the PMIC
2. There is a timing issue on PWR_EN that you are not aware of, and it appears the LED driver is causing the PMIC to reset - the PWR_EN pin must be set high within 5s or the PMIC will reset and be stuck in a Reset loop until PWR_EN is set high. Jumper JP9 must be shunted from pin 1 to pin 2 (PWR_EN shorted to V3P3) and you must ensure that V3P3 is actually being generated by the USB2ANY (you can probe R9 or the high-side of R1 or R2 to verify). In the screenshot below I can toggle V3P3 On/Off as needed. For the TPS65217CEVM, it is required that this supply is ON.