How to power Manage for S32G274 with VR5510

[GuoGuo]

   Hi，We want to let S32G board goto standby mode at some apply ，but we don‘t know how to control the VR5510 and S32G。We can use the I2C to commuicate with VR5510 ,but not sure which register to control 。The demo code we fond is just about PMIC is about the watchdog set .

     We have NDA already.

1..Can you give us some demo to control the VR5510.

2 let the S32G chip goto standby mode ,we dont kown how to use this pin like this  picture such as PMIC_staby. Can you provide some demo example.

Thank you very much.!

[nxf92355]

Hello @ Guo Guo

There are no such example readily available for same.

PMIC_STBY_MODE_B signal is normally used to put the VR5510 into standby mode , you can see on schematics that you have attached. please refer briefly VR5510 low-power Standby mode guide (AN12880)  and AN12952 "S32Gx Power Saving Techniques". Read  PMIC AN13182 "VR5510 Device Design Guidelines " chapter 7 to Configuring PMIC.

Best Regards

Tushar

[steklic_Ra]

I have same problem. After calling Pmic_SetMode(STANDBY); board just resets after writing to PMIC_VR55XX_FS_SAFE_IOS_ADDR8.

I call after that Mcu_SetMode(SOC_STANDBY); but I guess it never executes since PMIC_STBY_MODE_B never asserts low and board just resets as I mentioned on Pmic_SetMode().

What is correct sequence for getting VR5510 and S32G2 into low power (standby) mode? Already read AN12952 and AN12880 but no luck there.

Also how do you get into "GO SLEEP" phase of McuM's shutdown?

[GuoGuo]

     Shall we change the hardware,VPPOTP ,The PowerGood ，VPRE must be high ？How to set the watchdog,We are not sure of which reason cause the board to reset.