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…
Hi Joyce,
Do you have any updates on your side? I have verified that the tocp is on the order of 3 us and the Iocp is 6A. This was done by putting a 3-ohm resistor on the output and I have captured the current waveform below:
Best,
Keerthi
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…
Part Number: DRV8840 Hi team,
Here's an issue from the customer may need your help:
The device outputs and connects 104 capacitors on OUT1, OUT2, drives at 25 KHz, 80% duty cycle, circuit around 1A. Why the chip would have abnormal heat condition…
