BQ76PL455A: 3.3V MCU power source for 50S solution

Beginner

Part Number: BQ76PL455A

Hi Team,

For 50S solution, I am trying to leverage PL455 x4pcs for this design. However, we need to apply 3.3 V to MCU. In EM1402, the power is applied from external USB.

I am thinking if there is any LDO or others from PL455 for this purpose. Could you give me your comment?

over 6 years ago

0 Roger Hwang over 6 years ago

TI__Genius 10785 points

Hello,

No, PL455A doesn't have LDO for MCU.

We are trying to NRND EM1402 so may I ask what is your plan for EM1402/PL455A?

Roger

0 Robin Tong over 6 years ago in reply to Roger Hwang

Prodigy 40 points

we will use VP pin power as below picture, and MCU max consumption low than 10mA.

It's can working?

0 Roger Hwang over 6 years ago in reply to Robin Tong

TI__Genius 10785 points

HI Robin

VP is off in shutdown mode. Once device goes into shutdown then you won't be wake up the device.

Who is going to send the wakeup pulse to Pl455A?

thanks

0 Roger Hwang over 6 years ago in reply to Roger Hwang

TI__Genius 10785 points

HI Robin,

Let us know if you still having issues.
We will close this thread.

thanks

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BQ76PL455A: 3.3V MCU power source for 50S solution