topic Re: VR5510 Standby mode entry in Power Management

VR5510 Standby mode entry

leo_liu2 — Wed, 12 Oct 2022 11:58:13 GMT

Hi all,

Recently,i am trying to make the VR5510 and S32G enter the Standby mode.According to the AN12952 and AN12880,the following two steps were performed:

(1)I send a enter standby mode command to the VR5510 through IIC by calling the Pmic_Ipw_SetMode() function firstly.

(2)And then,i pull down the PMIC_STBY_MODE_B pin by calling the Power_Ip_SetMode().

After finishing the step mention above,i found that the SOC do not enter standby mode but reset repetitive.Is there any wrong i have do or any step i have miss?The purpose i want is to let the SOC(S32G-VNP-RDB2) and VR5510 enter standby mode.

Re: VR5510 Standby mode entry

JozefKozon — Fri, 14 Oct 2022 06:29:12 GMT

Hi Huawei,

please refer to the section 5.4.1.2 in the AM12880. I see you want to use the Safe transition mode, the I2C bus command and the STBY pin. For this case, please make sure, that you have set the bits 4 and 5 in the CFG_2_OTP register. The STBY_SAFE_DIS_OTP bit must be set to logic 0 and the STBY_WINDOW_EN_OTP must be enabled.

With Best Regards,

Jozef

Re: VR5510 Standby mode entry

leo_liu2 — Mon, 07 Nov 2022 12:45:32 GMT

Hi Jozef，

My problam has been solved,thanks for your reply!

Re: VR5510 Standby mode entry

JozefKozon — Tue, 08 Nov 2022 09:45:10 GMT

Hi Huawei,

you are very welcome. I am glad, that your issue is solved.

With Best Regards,

Jozef

Re: VR5510 Standby mode entry

Yang_C — Tue, 29 Oct 2024 03:31:49 GMT

Hi Leo,

May I ask how you resolved your problem? I am haing the same issue recently.

Looking forward to your reply.

Thanks