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  • DRV8840: DRV8840 drive circuit current does not reach the set maximum

    TI Thinks Resolved
    Part Number: DRV8840 Hi Team, The demo board schematic and layout were made according to the TI official document. Customer set VREF with the DAC of the microcontroller. Risen=0.1R. Vref is 2A. OUT1 and OUT2 are connected to a 5 ohm resistor. But when…

  • DRV8840: Question for DRV8840

    TI Thinks Resolved
    Part Number: DRV8840 Hi Team, The customer is experiencing below issue and needs your help. PIN3 VCP should be configured as shown in the manual. But the design is wrong, but it works. What is the reason? Is there a risk?
    • Answered

  • DRV8840: DRV8840 datasheet data clarification

    Resolved
    Part Number: DRV8840 Other Parts Discussed in Thread: LM317 Hello, the datasheet (SLVSAB7D, p. 11) gives a pulldown resistance of "approximately 100 kΩ" for the I[4..0] inputs. I've connected 2 of these inputs in parallel, pulling them…
    • Resolved
    • Answered

  • DRV8840: PPAD wire bonding

    Resolved
    Part Number: DRV8840 Hi all Would you mind if we ask DRV8840? <Question1> Is PPAD the same as GND level? <Question2> In relation to <Question1>, PPAD is connected to GND with wire bonding or substrate? Kind regards, Hirotaka Matsumoto
    • Resolved

  • DRV8840: frequency stability

    Part Number: DRV8840 hi, I would like to know if I can guarantee what is the frequency stability resolution? I'm working on a steady 110 Hz. can I be sure the frequency will stay + - 0.5 Hz ? thank you Hen L

  • DRV8840: DRV8840PWPR random nFAULT high during softstart

    Part Number: DRV8840 Hi, I've encounter an random nFAULT high with the DRV8840PWPR motor driver during soft start which makes the motor stop. The Issue is only occurring in 10% of the DRV8840PWPR circuits from our boards, and replacing the circuit usually…
    • Answered

  • DRV8840: Capactior DC Bias Value on VCP

    Resolved
    Part Number: DRV8840 Hello team, The customer is using 0.1uF, however, due to the DC bias effect, it could be down 0.012uF. 1: Could you tell me how much capacitor value change due to the dc bias is allowed on VCP? 2: If this value(0.0012uF) would be…
    • Resolved
    • Answered

  • DRV8840: Question about VREF pin

    Resolved
    Part Number: DRV8840 Hello team, The customer is considering to protect the VREF pin from ESD. Would you mind answering the questions? 1. Is it okay to add the capacitor like the pic below? 2. Does the VREF pin have an ESD protection element inside of…
    • Resolved
    • Answered

  • DRV8840: Can I run two DRV8840 in parallel to double the load current?

    Resolved
    Part Number: DRV8840 I would not do it in my design, but I have to make work already existing board. It has two DRV8840 chips that were supposed to drive two different TECs. Recently mechanical design was changed to single TEC that requires 2 times higher…
    • Resolved

  • DRV8840: Now customers often burn out DRV8840 chip phenomenon，Please help to check whether there is any problem with the schematic diagram.

    Part Number: DRV8840

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