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CC2640R2F standby 电流问题



硬件: LaunchPad CC2640R2 

软件: simplelink_cc2640r2_sdk_4_10_00_10\examples\nortos\CC2640R2_LAUNCHXL\drivers\pinStandby

Demo程序配置为使用DC/DC,会周期性给VDDR充电,表现为万用表6uA~0uA跳变

现在想测试使用Global LDO:

pinStandby.c里standbyDuration修改为20。

在工程的ccfg.c文件里配置增加两条定义#define

#define SET_CCFG_MODE_CONF_DCDC_RECHARGE 0x1
#define SET_CCFG_MODE_CONF_DCDC_ACTIVE 0x1
#include <ti/devices/DeviceFamily.h>
#include DeviceFamily_constructPath(startup_files/ccfg.c)

硬件上,LaunchPad CC2640R2  移除DCDC_SW连接的电感L1。

修改后的环境下测得DCDC_SW电压为0.14v

电流仍然会在0~9uA跳变,按照我的理解,用Global LDO以后,电流应该是稳定的才对,不知道是哪里造成的问题?