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PMIC requirement

Frank Xiao
Genius 12055 points
Other Parts Discussed in Thread: TPS65023, TPS65262, TPS65070, TPS65287, TPS65218

Hi team,

I have a requirement below：

1. input 5v, output 1.1V（2A），1.5V（1A），3.3V(0.3A) 1.1V（200mA）,1.8V(100mA)

2.we also wants to use I/O as the the controller, when press the pin the PMIC start after 1s, when press again(or press long time), the PMIC stop work.

Thank you.

BR

Frank

  • 0
    TI__Genius 17380 points
    Hi Frank,

    There are a few options based on your requirements.

    The TPS65023 is a good fit for the power requirements, though the 1.1V @ 2A is slightly above DC specifications for this device (1.7A). It also does not integrate pushbutton, so they would need a simple digital circuit for control (an AND gate, some RC delays and a D flop for example). Same with the TPS65262.

    The TPS65070 has integrated pushbutton detection, but also integrates a charger which they may not need. It is also only specified up to 1.5A. Alternatively, maybe TPS65287 with a couple of discrete LDOs?
  • 0 in reply to Kevin LaRosa
    TI__Genius 17380 points

    Hi Frank,

    One last option to add would be the TPS65218 which has the pushbutton detection and would be a bit more efficient than the others as it would use 5 DC/DCs instead of 3 DC/DC and 2 LDOs. However, it would require a custom part number to provide the default voltage / sequence requirements. To do this, there must be a sufficient business case and likely an NRE to cover the expenses of developing the new P/N settings, getting it set up in inventory, etc. If this seems like the best option, let me know and I will get you in contact with the correct PME for driving this.

  • 0 in reply to Kevin LaRosa
    TI__Genius 12055 points
    Hi Kevin,

    I have checked the datasheet of the TPS65218. The current may cannot support 1.1V 2A? Could you please help me check it?

    Thank you.

    BR
    Frank
  • 0 in reply to Frank Xiao
    TI__Genius 17380 points
    Hi Frank,

    It can supply 1.1V at 2A. We cannot guarantee that it will meet all of the specifications at 2A but it is likely to meet most, if not all of them.