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Using DCDC_CTRL2_REG to control DCDC output voltage

Forums:

Dialog Smartbond Bluetooth Low Energy – Software

Hello,

I made a custom PCB without connecting VBAT1V to the ground and I observed the VDCDC voltage comes around 1V.

AS per DA14583 datasheet on page 143 ,Note 17: When VBAT1V > VDCDC_nominal, VDCDC will follow VBAT1V

I searched for way to set VDCDC_nominal but could not find anything .

Inside SDK I could see 3 control registers available named DCDC_CTRL_REG, DCDC_CTRL2_REG, DCDC_CTRL3_REG

我有什么办法可以配置这些寄存器n order to get 1.4V at VDCDC.

DA14580 need to activate the VDCDC to start the system

Forums:

Dialog Smartbond Bluetooth Low Energy – Hardware (device & reference designs)

Hi dialog,

I meet a strange start-up problem about DA14580 recently.

I check the components of my board by exchanging them to the normal board. However, the board doesn't start up after changing the main components such as the resistance , inductance and IC. Then I check the voltage around the DA14580 . The buck VDCDC is about 0 when the VDCDC of the normal board is 1.41V .