SLVAF75 August   2021 DRV10987

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Sleep and Standby Mode
    2. 1.2 Conditions for Entering or Exiting Sleep
    3. 1.3 Sequence to Enter Sleep Mode
  3. 2Implementation
    1. 2.1 Hardware Setup
    2. 2.2 Power Up Sequence With Speed Pin in I2C Speed Command Mode
    3. 2.3 Implementing Option 1
    4. 2.4 Option 1 With Zero Value at Speed Register
    5. 2.5 Implementing C Code With Option 2
    6. 2.6 Implementation of Exiting From Sleep Mode
  4. 3References

1.1 Sleep and Standby Mode

The DRV10987 device provides a sleep version and a standby version. The DRV10987 part number is used for both devices, that is, DRV10987D (sleep version), DRV10987S (standby version). When the device enters either sleep or standby, the device stops driving the motor. The step-down regulator is disabled in the sleep mode version to conserve more energy. The I2C interface is disabled and any register data not stored in EEPROM is reset for the sleep mode version. The switching regulator remains active in the standby mode version. The register data is maintained, and the I2C interface remains active for the standby mode version. Table 1-1 shows the differences between DRV10987D sleep mode and DRV10987S standby mode.

Table 1-1 Sleep Mode and Standby Mode Comparison
DRV10987D Sleep Mode DRV10987S Standby Mode
I2C Disable Active
Resister data Not stored in EEPROM Maintained
Step-down regulator Off On
3.3-V LDO Off On
1.8-V LDO Off On