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TPS650231: Part recommendation

Will Wang47
Expert 6560 points
Part Number: TPS650231
Other Parts Discussed in Thread: TPS65023

Tool/software:

Hi team,

Customer get inquiry for PMIC recommendation, they power rail requirement as below.

They find TPS650231 could support the 4 rail, and the last one can't be support.

So they would like to check if we get any PMIC solution that could support all the 5 power rail.

The last one request 0.8~1.0V adjustable, 1.2A output max current. 

Could you help check?

Thanks and Best Regards,

Will

  • 0
    TI__Expert 3475 points

    Hi Will, 

    I may suggest TPS65023B instead, since they are very similar,
    but the LDO output values for the -B version are more compatible with these power requirements,
    so they can use each of the 5 outputs for the 5 rails. 

    Customer can use the 1,1 configuration to set VLDO1 = 1.8 V and VLDO2 = 3.3 V to fulfill the low current rails.

    I would suggest using

    • LDO2 = 3.3V, 10 mA
    • LDO1 = 1.8 V, 100 mA
    • DCDC3 = 1.2 V, 1A
    • DCDC2 = 0.8 V, 1.2 A
    • DCDC1 = 0.8 - 1 V, 1.2 A

    Current limits for the DCDC bucks fit the customer requirements,
    and DCDCx output is adjustable with a resistor divider at DEFDCDCx. So DCDC 1 can be adjustable this way.

    Let me know their thoughts, and if they have any further concerns!

    Best Regards, 
    Sarah