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DRV8701: Motor Drivers Solution Seeking

Part Number: DRV8701
Other Parts Discussed in Thread: DRV8702-Q1, DRV8703-Q1

Hi all,

My customer is seeking a motor driver solution from TI. I only found the DRV870x solution from ti.com ,but the PWM frequency is fixed. (100kHz)

He would like to operate in 20 kHz to reduce switching loss and heat. Below information is the application background.  Could anyone recommend the corresponding solution including motor drivers and external MOSFET ? Thank you for your help.

Background:

Application : Automotive (PTG motor driver)

Topology : H-Bridge

Maximum load current : 15A/30A

switching frequency : 20 kHz

input voltage : 9-16V

test condition : Vin=18V / an hour / 85 Celsius degree

Vin=26V/2 min  / 85 Celsius degree

ISO7637 pulse5b 40V/400ms/0.5Ω

  • Hi Roy,

    The DRV8701 can operate at frequencies from 0 Hz to 100kHz, but is not automotive qualified.

    For automotive devices, please consider the DRV8702-Q1 or DRV8703-Q1. These have the following specifications:

    Application : Automotive (PTG motor driver)                                Yes

    Topology : H-Bridge                                                                      Yes

    Maximum load current : 15A/30A                                                  FET dependent

    switching frequency : 20 kHz                                                        0 Hz to 100kHz

    input voltage : 9-16V                                                                     5.5V to 45V (absolute maximum of 47V)

    test condition : Vin=18V / an hour / 85 Celsius degree                 

    Vin=26V/2 min  / 85 Celsius degree

    ISO7637 pulse5b 40V/400ms/0.5Ω