TPS65224-Q1: How to define the LDOs' slew rate of the PMIC TPS65222/4?

Thomas-Qizheng WANG

Prodigy 50 points

Part Number: TPS65224-Q1

Tool/software:

How to define the LDO slew rate of the PMIC TPS65222/4?

There are registers to define the slew rate of the BUCK, but how to control the slew rate of the LDOs?

Thanks

8 months ago

0 Thomas-Qizheng WANG 8 months ago

Prodigy 50 points

Hi Sir/Madam

I found the timing requirements of the LDOs in the datasheet, it shows the the LDO1 slew rate can up tp 9mV/us, LDO2/3 slew rate can up to 12mV/us,

Can it be controled by external setting?

Thanks

Regards

0 Katie Pier 8 months ago in reply to Thomas-Qizheng WANG

TI__Guru* 78071 points

Hi Thomas,

My key contact for this device is out today but should be back in office tomorrow. We'll work to get you an answer.

Regards,

Katie

+1 Niko Alatalo 8 months ago in reply to Katie Pier

TI__Mastermind 20300 points

Hi Thomas,

the slew rate for the LDOs is not controllable. The values in the data sheet only show the possible variation in the slew rate.

regards,

Niko

0 Thomas-Qizheng WANG 8 months ago in reply to Niko Alatalo

Prodigy 50 points

Hi Niko,

Understand, I will follow the spec in the datasheet. Thank you very much for your reply!

Regards

0 Thomas-Qizheng WANG 8 months ago

Prodigy 50 points

Hi Niko,

I have another question, is the power down slew-rate of the buck decided by the BUCKx_CONF register as the power up?

Thanks

Regards

+1 Niko Alatalo 8 months ago in reply to Thomas-Qizheng WANG

TI__Mastermind 20300 points

Hi Thomas,

yes the slew rate selection in the BUCKx_CONF register applies to both rising and falling edge. This is stated in the data sheet register map section.

regards,

Niko

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TPS65224-Q1: How to define the LDOs' slew rate of the PMIC TPS65222/4?