TMS320F28377D: TMS320F28377D: How to reduce current consumption in Low Power Mode

Tool/software:

Hello,

I am currently working on implementing Low Power Mode with the TMS320F28377D.

On my board, when 5 V is supplied, the system normally consumes about 350 mA. After entering HIB mode, the current drops to approximately 47 mA.
According to the datasheet, however, the maximum current consumption in HIB mode is specified as about 7.125 mA.

My current source code is shown below.

• Are there additional steps (e.g., powering down ADCs or disabling other peripherals) that can help further reduce the current?

• In general, what components or configurations can be adjusted to minimize power consumption when entering Low Power Mode?

Also, the datasheet and TRM only provide high-level information.
Is there any application note or document that gives a more detailed explanation of the Low Power Modes for the F28377D?

Thank you in advance for your support.

void HIB(void)
{
#if defined(CPU2)
    STANDBY();
#elif defined(CPU1)
    EALLOW;
    CpuSysRegs.LPMCR.bit.LPM = LPM_HIB;
    EDIS;

    while((DevCfgRegs.LPMSTAT.bit.CPU2LPMSTAT == 0x0) &&
          (DevCfgRegs.RSTSTAT.bit.CPU2RES == 1));

    DisablePeripheralClocks();
    EALLOW;
    ClkCfgRegs.SYSPLLCTL1.bit.PLLCLKEN = 0;
    ClkCfgRegs.SYSPLLCTL1.bit.PLLEN = 0;
    EDIS;
    asm(" IDLE");
#endif
}

static void Sys2_Sleep(void)
{
    // Enter LPM (Low Power Mode)
    SetCANStatus(A_SLEEP);
    SetCANStatus(B_SLEEP);

    GpioDataRegs.GPACLEAR.bit.GPIO10  = 1U;  // AUX OFF
    GpioDataRegs.GPBCLEAR.bit.GPIO50 = 1U;   // LED OFF
    GpioDataRegs.GPBCLEAR.bit.GPIO51 = 1U;   // LED OFF
    GpioDataRegs.GPBCLEAR.bit.GPIO52 = 1U;   // LED OFF

    SeizeFlashPump();
    FlashOff();
    ReleaseFlashPump();

    EALLOW;
    CpuSysRegs.LPMCR.bit.M0M1MODE = 1U;
    EDIS;

    HIB();
}