• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 358 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Original question:

TPS65266: Buck Regulator Enable

TPS65266: Buck Regulator Enable

Madhu Wesly
Intellectual 280 points
Part Number: TPS65266
Other Parts Discussed in Thread: TPS65261

Hello,

Please clarify my doubts related to TPS65266-1 regulator below:

1. How to control(Enable/Disable) Outputs of the DC-DC regulator: TPS65266-1 ??

2. Is there any possibility of getting a Switched voltage regulator with similar specifications as TPS65266-1(Rated current 2A(@3.5V) for at-least one regulator in the regulator) but with INPUT supply minimum 9V ??

Thanks in advance.

  • 0
    TI__Genius 15135 points

    Hi, Wesly 

    1. Suggest using open drain configuration to control ENx pin that can enable/disable tps65266-1 output.

    For example, the POWER GOOD pin of previous stage。 

    When PG is Hi-Z, the ENx pin has a small pullup current Ip which can enable output.

    When PG is low, which will disable output. 

    2. Yes, I think TPS65261 is suitable for your application. 

    And you can use the resistor divider to adjust Vin UVLO to 9V, please refer the 8.3.3 section in page15 of datasheet: Enable and Adjusting Under-Voltage Lockout.