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TPS63010 - Is the part capable of output current 2A

Poh Leong Ng
Intellectual 745 points
Other Parts Discussed in Thread: TPS63010, TPS63020

Hi All,

I have a design problem here. I am trying to use TPS63010 to get 4.2V @ 2A output. It should be alright if my input voltage is 5V based on figure 1 of the datasheet.

However, the device can be Li-Po battery (nom 3.7V) operated. Based on the chart, I will be getting about 1.5A, not good enough. 

Is there a workaround?

  • 0
    TI__Guru**** 167196 points

    You can change to the TPS63020 which has higher switch current limit.

  • 0
    TI__Prodigy 200 points

    Hi Poh Leong,

    what you are asking is related to physics. When you operate from a voltage below you desired output voltage, than the converter operates in boost mode. Basically the current drive capability is related to the switch current inside the chip. In a simplified way think of it like POUT can not be larger than PIN (and than you have losses and a certain duty cycle you need to consider). You picked the right graphs inside the datasheet, which are meant to help quickly identify the maximum available output current depending on the Vin to Vout ratio.
    This being said, TPS63020 is indeed the solution for your need.

    All the best, Thomas