TPS51215A: Imon Pin

GARETH OU

Mastermind 8825 points

Part Number: TPS51215A
Other Parts Discussed in Thread: TPS51222

Alder Lake IMVP9.1 VCCIN_AUX Power Solution needs to report current to the CPU, so Imon Pin# is required.

NCP81270 has a PIN# "Iout" which can be reported to the CPU , as below

over 3 years ago

0 Gerold Dhanabalan - Online Design Tools over 3 years ago

TI__Genius 14455 points

TPS51215A does not have a IMON pin. Would you be open to considering an external circuitry to help monitor the current?

Regards,

Gerold

0 GARETH OU over 3 years ago in reply to Gerold Dhanabalan - Online Design Tools

Mastermind 8825 points

Could you please provide a suggested schematic for IMON

Thank you

0 Lishuang Zhao over 3 years ago in reply to GARETH OU

TI__Expert 7500 points

Hi Gareth,

TPS51222 has IMON pin. Can you check whether it is suitable?

Thanks,

Lishuang

0 GARETH OU over 3 years ago in reply to Lishuang Zhao

Mastermind 8825 points

Hi Lishuang

I will send it to the customer first

But there is still a problem ......Alder lake only when vid = 0, Output voltage = 0V, when vid = 1, Output voltage = 1.8V But when vid = 0 and 1, Power Good = High Level,

0 Yuchang Zhang over 3 years ago in reply to GARETH OU

TI__Mastermind 18510 points

Hi,

What do you mean about VID change & PGOOD?

51222 w/o VID, should not be proper for VCCIN_AUX rail in ADL, and 51215A has no Imon, we haven't created external Imon circuit and I dont think customer can accept this since competitor has integrated solution.

Yuchang

0 GARETH OU over 3 years ago in reply to Yuchang Zhang

Mastermind 8825 points

Thanks

got it

Pgood #pin must be High VID to control the output voltage whether it is 0V or 1.8V

0 Lishuang Zhao over 3 years ago in reply to GARETH OU

TI__Expert 7500 points

Hi Gareth,

So that we don't have suitable device if customer can't accept TPS51215A without IMON.

Thanks,

Lishuang

Power management

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TPS51215A: Imon Pin