TPS65910A3EVM-583: About ILMAX register

Tao_2199

Genius 5660 points

Part Number: TPS65910A3EVM-583
Other Parts Discussed in Thread: TPS65910

Hello,

Regarding to ILMAX register on TPS65910AA1, my customer is asking some question.　

They use 600MHz(@OPP100) on AM3554, currently ILMAX register of VDD_MPU is configured to 1.0A(ILMAX = 0).

(According to datasheet table 5-10, VDD_MPU current is 600mA(max) at OPP100.)

(Question)

1) When MPU clock is change to 800MHz(@turbo), should VDD_MPU current need to change to 1.6A(ILMAX = 1)?

Because it is 800mA(max) at turbo mode on datasheet table 5-10.

2) At EEPROM mode, is ILMAX register configured to default value(ILMAX = 0 :1.0A)?

Regards,

Tao_2199

over 5 years ago

0 Tuomo Alatalo over 5 years ago

TI__Intellectual 950 points

Hi Tao_2199,

Your question has been forwarded to responsible engineer, he will answer to your question, thanks

Tuomo

0 Brian Berner over 5 years ago

TI__Mastermind 30260 points

Tao_2199,

If the Sitara processor is running Linux, the integrated TPS65910 drivers and code for dynamic voltage scaling (DVS) should automatically handle the changes in clock speeds.

The processor should increase the voltage on the PMIC core rail before increasing the clock speed. If the voltage change is handled automatically, then the current limit setting should also be automatic. I do not think this is a concern unless you notice a problem in your system.

0 Tao_2199 over 5 years ago in reply to Brian Berner

Genius 5660 points

Hello Brian,

I informed to my customer your answer and understood it.
I will close this thread.
Many thanks!

Regards,
Tao 2199

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TPS65910A3EVM-583: About ILMAX register