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  • DRV8870: The voltage ripple

    TI Thinks Resolved
    Part Number: DRV8870 Hi team, my customer find that the negative voltage ratings will exceed the maximum rating (-0.7V) . The minimum voltage is -0.9V and last for about 100ns. Will it damage our products and do u have any advice to reduce the minimum…

  • DRV8870: Reverse Current Protection Circuit Inquiry

    TI Thinks Resolved
    Part Number: DRV8870 Hello, My customer is considering using the DRV8870 for DC motor control. Input power 24V, estimated current consumption is 1A. They assume that when controlling a DC motor (converting from CW to CCW or Pause), a reverse current will…

  • DRV8870: DR8870

    TI Thinks Resolved
    Part Number: DRV8870 Other Parts Discussed in Thread: DRV8770 DR8870 does not have an emergency stop function, the impact force is too large when the motor is stopped in an emergency, the full-bridge circuit used in the past, controlled by the SD foot…
    • Answered

  • DRV8850: 4x IN DRV8850 vs 2x IN DRV8870

    Resolved
    Part Number: DRV8850 Other Parts Discussed in Thread: DRV8870 , Hi Ti experts, Why does DRV8850 have 4x input pin to control H bridge. Correspondingly, the DRV8870 has only 2x input. What are the application scenarios of the four inputs. In DRV8850 datasheet…
    • Resolved

  • RE: DRV8870: The PWM modulation waveform is abnormal

    Hi Pablo; Thank you for your concern，At present, we still use MOS to design emergency stop control circuits。Thanks！

  • RE: DRV8870: As soon as the board is powered on, the DC brush motor driven by DRV8870 keeps rotating rapidly

    Hi Pablo, Pablo Armet said: I will close this ticket since it seems the issues was probably caused by overheating on the IC pins. If you observe the same issue on another IC, you can submit a new question. chenzhuang said: If there is a specific soldering…

  • RE: DRV8870: Drive matching issue

    Hi Cherry, Can you provide more information if possible? Based on the attached waveforms, there are quite a lot of issues that I can see. Startup waveform is quite unstable. The current dips down to -2A for a short amount of time and then oscillates…

  • DRV8870: How to use DRV8870 to drive a single-phase BLDC

    TI Thinks Resolved
    Part Number: DRV8870 Other Parts Discussed in Thread: DRV8801A-Q1 , DRV8231A , DRV8251A hi, Thank you for your support. As we known, there are no products in our company to drive single-phase BLDC directly. So I want to design the single-phase BLDC by DRV8870…

  • DRV8870: Questions about demo codes Delay_us

    Part Number: DRV8870 Other Parts Discussed in Thread: DRV8860 , MSP430F2350 , DRV8860EVM Hi, My customer is evaluating with DRV8860 EVM and they have some related problem. As showed in following figure is the interrupt function in the demo code, it seems…

  • DRV8870: Driving BLDC Motor with DRV 8870

    TI Thinks Resolved
    Part Number: DRV8870 I am using this chip for a slightly unconventional application of driving a BLDC MOTOR with sinusoidal drive. The motor is rotating but all of a sudden the driver is failing, 24 volts is shorting to ground. The voltage is 24v, pwm…

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