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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 1Mohm…
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 DRV…
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…
Hi Joonas,
Joonas Hollo said: Just to note that I was using one (1) Ohm not 10 Ohms in first current measurements.
Sorry about my oversight with this.
Joonas Hollo said: Overall, I think that this OVP might be the case we are facing. So need to consider…
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 support…
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 see about…
Part Number: DRV8840 Dear Specialists,
My customer is encountering the same situation.
I would be grateful if you could advise.
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According to the related thread, the conditions for an overcurrent event are commented as current >6A 3.75us±30%.…
Part Number: DRV8840 Hello
I want to use DRV8840PWP on my project. However i do not want to use Current set inputs pins of DRV8840PWP. ( I0-I1-I2-I3-I4 / 23-24-25-26-27 ).
I will not use current regulation. So i tied ISENSE pin to GND and VREF pin to V3P3. …
Part Number: DRV8840 Dear Specialists,
The customer is considering DRV8840 and has questions.
I would be grateful if you could advise.
• What is the state of nFAULT while nRESET is low?
Is it in a high impedance state?
• If the error condition persists…
