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  • DRV8840: Stopped working during operation and exploded when powered on

    Part Number: DRV8840 DRV8840PWP, Origin: Malaysia. This part exhibited device explosion upon power-up for the first time. Parts manufactured in Taiwan have no such issue. The second failure occurred on two product models: the IC entered self-protection…

  • DRV8840: FAULT

    Part Number: DRV8840 We are using the DRV8840PWPR in one of pcb assemblies. If an overcurrent condition is created will the Fault pin stay at a logic low until the power is cycled to the VM pins? Note our Reset pin is pulled high so I can't issue a reset…

  • DRV8840: OCP Detection and SLR_STATUS1 Fault Status During Motor Testing

    Part Number: DRV8840 Other Parts Discussed in Thread: DRV8847 , DRV8461 , DRV8462 , DRV8434A , DRV8434S , DRV8452 , DRV8889-Q1 In our application, we are using OCP detection as an indication that the camera lens has reached its maximum/minimum mechanical…

  • DRV8840: Resistor between VCP & VM

    TI Thinks Resolved
    Part Number: DRV8840 Tool/software: Hello team, From below example circuit from datasheet, may I ask: 1. What is the role of the 1Mohm resistor between VCP and VM? 2. Is this resistor absolutely neccessary, or could we design circuit without this…

  • DRV8840: Current regulation does not work

    Part Number: DRV8840 Tool/software: Hi Forum, i've used the DRV8840 in a recent design and cannot get it to work. I've tested two different boards, both were manufactured by a professional company so soldering is not an issue. I've used two different…
    • Answered

  • DRV8840: DRV8840 Has No Output

    Resolved
    Part Number: DRV8840 Hi I use DRV8840PWP on my design. But i have no voltage at the output. You can see my sch below. - I see 3v3 correctly at the nSleep, nReset, Phase and Enable pins. ( As i apply ) - I se 3v3 correctly at the V3P3OUT. - I…
    • Resolved

  • DRV8840: FAULT bit occurs right after motor is running

    Part Number: DRV8840 Tool/software: Hi, Just wanted to check whether anyone has faced the same problem. So we thought that our motor was broken (DC brushed motor 24VDC) but it was investigated by the manufacturer that it´s not. Still we have issues…

  • DRV8840: What would be the correct setup for filtering output peaks in BDC motor drive?

    Part Number: DRV8840 Tool/software: Hi, We have found out that applying some capacitance to DRV8840 Out parallel to BDC motor makes startup peaks lower. However sometimes we still encounter nFAULT to activate. In current design we cannot nRESET the…

  • DRV8840: OCP time tolarence

    TI Thinks Resolved
    Part Number: DRV8840 Hi expert, How long is DRV8840 OCP time described in datasheet? I didn't find such spec in datasheet. In another thread: (+) DRV8840: maximum OCP current and OCP decision timing - Motor drivers forum - Motor drivers - TI E2E…

  • DRV8840: DRV8840 : Can I change directions without DEAD TIME during motor operation?

    Part Number: DRV8840 DRV8840 : Can I change directions without DEAD TIME during motor operation?

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