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…
Part Number: DRV8840 Hello, I have some concerns about my circuit with DRV8840 driver. In design I don't have any MCU, only logic based on simple circuits and gates. M otor is BDC combined with gearhead (~200:1). So I'm using chopping current to limit…
Part Number: DRV8840
1. The DRV8840 chip has no voltage output, and the power supply voltage is 24V 2. This has never happened before 3. Tested that each control port signal is normal 4. There are about 10 broken pieces