• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 31 subscribers
  • Views 365 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

DRV120: Supply voltage DRV120 26V or 28V

Robert Karlson
Prodigy 10 points

Part Number: DRV120

Hello,

I have a question regarding the maximum supply voltage of the DRV120. On the TI product page it is listed as 26V, in the datasheet on multiple occasions a supply voltage of 6-28V is mentioned. Yet, 28V is then listed in the same datasheet as the absolute maximum supply voltage, and the optimal supply voltage is given up to 26V. The data sheet then mentions that "Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability".

To my understanding this means that the maximum operating voltage is indeed 26V and not 28V. Or is this a typo and the absolute maximum rating should be higher than 28V ?

Kind regards

  • 0
    TI__Mastermind 23621 points

    Hey Robert,

    Basically the chip can handle 28V, but it isn't really recommended to design your system fully around 28V.  Think of the absolute max as "beyond this the device could be damaged even with momentary voltage spikes", and the recommended operating range is the range you should design the system to keep within.  As you trigger the solenoid there is likely to be some ripple on the voltage that could exceed the nominal supply input.  Our absolute maximum is typically just a few volts above the recommended operating range.  

    If you need slightly higher voltage I recommend looking at the DRV8106-Q1 - It's rated for 37V recommended operating conditions, 40V max, was released 2 years ago and is only a few cents more expensive than DRV120. Here's a page with our >30V motor drivers with half bridge control (solenoid) - https://www.ti.com/motor-drivers/solenoid/products.html#p358max=30;70

    Regards,

    Jacob