• State
  • Locked Locked
  • Replies 2 replies
  • Subscribers 29 subscribers
  • Views 502 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DRV110: Protection function for DRV110

ryuji asano
Intellectual 800 points
Part Number: DRV110
Other Parts Discussed in Thread: DRV8885, DRV120

Hi, expart.

Please teach me about protetion function for DRV110.
　　– Thermal Shutdown
　　– Undervoltage Lockout (UVLO)
　　– Maximum Ramp Time
　　– Optional STATUS Output
What behavior deos it do?

Unlike DRV8885, DRV110 has no built-in FET.
What's the point of protecting the internal parts of DRV110?
In the case of DRV8885,integrated FET is getting hot.
So DRV8885's protection function is very important.

Best regards.
Ryuji

  • 0
    TI__Guru** 114905 points
    Hi Ryuji,

    Our experts have been contacted and should reply soon.
  • 0
    TI__Genius 14485 points

    Hello Ryuji,

    • Thermal Shutdown:
      • at 160C the DRV110 will shut down, and the STATUS pin will float.
      • Once the temperature drops back to 140C, the DRV110 will resume operation and the STATUS pin will pull down.
      • Thermal shutdown may have been added for the DRV110 so it would be available on future products that leverage the same design, like the DRV120 which has an internal FET.
    • UVLO
      • When the voltage at VIN is lower than 4.6 V the DRV110 will shut down, and the STATUS pin will float.
      • When VIN rises above 4.6 V, the DRV110 will resume operation and the STATUS pin will pull down.
    • Maximum ramp time is not a protection feature. We will remove this from the front page in the next datasheet update
    • STATUS output:
    • Putting a pull-up resistor on the STATUS pin allows it to be read by a GPIO pin
    • The STATUS pin will float when the DRV110 is in UVLO, temperature shutdown, or EN = LOW
    • The STATUS pin pulls down to ground when the part is in normal operation (EN = 1)