About Nrf52832 QFN 48 DCDC supply pin and the corresponding grounding pin

[HuiHuang]

Hello:

We know that 45pin 46pin DEC4 can be connected to inductance to process the ripple of internal DCDC circuit. Then, may I ask which pin is the input power supply corresponding to this DCDC and the ground corresponding to the power supply?

Power supply corresponding to 48 pin VDD?
What about the ground? A 45-pin ground or a large block with the whole chip grounded?

Above, thank you

[Jared]

Hi,

Questions about how our internal regulation is designed is considered non public information.

Maybe we can help you in another way if you would provide the motivation for asking this question?

regards

Jared 

[HuiHuang]

Our project PR2401 wants to use a 45-46 pin DCDC circuit, so if we find the key power supply and ground for VDD1~VDD3, we can focus on its treatment or protection.
Therefore, which pin we want to connect is the key to protect (because the main overcurrent is the key protection, so the previous question also asked the overcurrent pin corresponding to the DCDC circuit)

[Jared]

Hi,

Can you share your schematic? If you choose to use DC/DC on the nRF52 then you don't need to add any external protection to the DC/DC circuit as nothing external should be connected to it,

regards

Jared