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DRV10983: Configuration problem

Annie Liu
Genius 10295 points
Part Number: DRV10983

Hi Team,

The customer is using DRV10983 as the driver of the BLDC fan. Everything is ok.

When he started to consider the standby power consumption, he tried to use DRV10983Z. However, the low-power version Z will immediately enter the sleep state shortly after power-on, and the I2C interface will be closed at the same time. He would like to know how to resolve this issue?

How to check and configure the EEPROM with the microcontroller when power is on?

Thanks.

Best regrads,

Annie

  • 0
    TI__Mastermind 24415 points

    Hi Annie,

    Thanks for posting your question in MD forum. During device powerup, If the SPEED pin voltage is below 30 mV for about 5.2 ms, device will enter sleep mode. There are two ways to prevent device from entering sleep mode.

    1. During device powerup, make sure the voltage on SPEED pin is above 30 mV. 

    2. Set sleepDis = 1 to prevent the device from entering into the sleep or standby condition. Note that if the device has already entered into sleep or standby condition, setting sleepDis = 1 will not take it out of the sleep or standby condition. In that case, apply voltage above 2.2V to SPEED pin to exit sleep mode. 

    Check table 1 in datasheet to know more on how to enter and exit sleep mode.

    Check section 8.3.5 in the datasheet for procedure to read and program EEPROM in DRV10983.

    Regards,

    Vishnu.