SWCU192 November 2021 CC1312R7 , CC1352P7 , CC2652P7 , CC2652R7
The on-chip buck-mode DC/DC converter provides a simple way to reduce the power consumption of the device. The DC/DC converter is integrated into the supply system and handles bias and clocks automatically through the system controller.
The DC/DC converter is controlled through the AON_PMCTL:PWRCTL register.
To enable the DC/DC converter when the system is active, the AON_PMCTL:PWRCTL.DCDC_ACTIVE bit must be set. The DC/DC converter is also used periodically when the device is in Standby mode to maintain voltage on the VDDR domain.
The output voltage of the DC/DC regulator is typically trimmed to 1.68 V, but there are use cases where other voltage levels are used. The voltage levels are controlled automatically by the device and cannot be changed by the user.
The DC/DC regulator output cannot be used to supply external circuitry.