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DRV8703D-Q1: DRV8703D-Q1

Part Number: DRV8703D-Q1
Other Parts Discussed in Thread: DRV8701, DRV8702-Q1, DRV8703-Q1

Hello Experts,

You have these drivers: DRV8701, 02 and 03 but the difference between them is very unclear. Unfortunately your compare function helps very little since you have selected parameters that are all the same in the compare. 

Can you clarify the differences between the three products for us? 

Second question: 

Which do you recommend in relation to maturity?


Best, Christian

  • Hi Christian,

    The differences between DRV8703-Q1 and DRV8702-Q1 is that DRV8703-Q1 has watchdog timer fault handling, more IDRIVE settings, configurable CSA gain setting, output dead time and PWM off time, and Vds(ocp) of each half-bridge's high-side/low-side monitors can be disabled independently of each other. Finally, the benefit of DRV8703-Q1 using serial interface (SPI) is that you can tell which fault is ocurring thanks to the status registers, while the DRV8702-Q1 only has a fault pin and you must debug which fault has ocurred.

    The DRV8701 is an industrial grade device (non -Q1), its area is 16mm2 instead of 25mm2, has a higher minimum VM voltage (5.9-V), it can do either PH/EN (DRV8701E) or PWM (DRV8701P) but not both on the single device nor Independent Half-Bridge Control, lower minimum IDRIVE setting, less IDRIVE settings (smaller granularity), and other differences

    To find out the rest of the differences between the DRV8701E/P and the DRV8702/3-Q1, it is best to compare both sets of devices by comparing the features, abs max and elect specification table sections across datasheets.

    The difference between DRV8702/3-Q1 and DRV8702D/3D-Q1 is that the D versions are half-bridge, while the non-D are H-bridge

  • As for question of maturity, all devices have released to market for years now. All devices are considered mature.

  • Ok. What information of our design do I need to convey to you for you to recommend either 01, 02 or 03?

    Will all of them exist, be recommended for new designs, looking 5 years ahead?

    Best, Christian

  • Do you want to use a hardware interface or SPI interface to configure the driver? Will you need to operate in industrial or automotive temperature grade? Are you driving unidirectional load(s) or bidirectional load? 

  • Ok. Great. 

    We are ok with either SPI or hardware, if same functions are available. 

    We are driving bidirectional loads.

    Based on that which will you recommend? One of them or more of then?

    Can we get the parts also in 5 years from now, or which will become obsolete?


  • Hi Christian,

    SPI adds more functional configuration and fault status detail.

    When using bidirectional load, H-bridge driver should be utilized.

    These drivers will be supported for years. No plan to obsolete.

    I recommend to you the DRV8703-Q1.