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TPS2116: Regarding Vout status

Daisuke Higa
Genius 4350 points
Part Number: TPS2116
Other Parts Discussed in Thread: TPS2117

Hi support team.

Our customer asked us the following questions.

1.What happens to VOUT when MODE≥1V, VIN1=3.3V, VIN2=0V, PR1=Low?
2.Is it recommended to control the MODE pin with GPIO when VIN1>1.6V and VIN2>1.6V?
3. If 2. is YES, how long does it take for the output to switch from Hi-z to VIN1 when VIN1>1.6V, MODE=L->H (PSR1=H)? (Is it the same as tD time?)　
4. What happens to VOUT when VIN<1.6, VIN2<1.6, MODE>1V?

Could you give us your advise？

Best regards,

Higa

  • 0
    TI__Genius 16095 points

    Hi Higa, 

    1. In this condition, VIN2 will be selected to power the output 
    2. The mode pin can be connected to either input or an external bias, we recommend tying PR1 to a GPIO pin when MODE is tied high. 
    3. We do not recommend MODE to be tied to a GPIO so we do not have this timing information
    4. In this configuration, the device will output HiZ since there are no valid inputs. 

    We have re-organized the truth table flow for our new TPS2117 device. This is pin-to-pin with the TPS2116 and uses the same logic flow. The difference here is the TPS2117 has a smaller Ron and larger current capability of 4A. However, the truth table can be used interchangeably if you prefer the wording below: 

    Best Regards, 

    Elizabeth 

  • 0 in reply to Elizabeth Higgins
    Genius 4350 points

    Hi Elizabeth-asn

    Thank you for information and advise.

    I understand.

    Best regards,

    Higa