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
Part Number: DRV8840 Hi team,
Here's an issue from the customer may need your help:
In slow decay mode, high and low (no PWM) motor commutation occurs when the motor current is pulsed high before entering the chopping current platform, but no high…
Part Number: DRV8840 Hi team,
Does DRV8840 have shoot-through protection circuit for H-bridge? If you have any explanatory materials on this, could you let me know? Also, if you have dead time information, could you let me know?
Regards,
Yamaguchi
Part Number: DRV8840 Hi team,
I received a question about DRV8840 from my customer.
Is there an input order for each pin? For example, if a voltage within the absolute maximum ratings is applied to the input pins when VM is not applied, does it cause malfunction…
Hi Rick,
Thank you for your strong help.
The customer confirmed that similar overshoot (about 1300mV) were generated between ISEN terminal and GND terminal of DRV8840 package
not sense resistor terminals.
Also they monitored the current which flowed from…
Part Number: DRV8840 Hello Team,
I'd like to confirm about DRV8840. In the DS, VCP cap value is recommended as a 16V ceramic cap.
I'm assuming that VCP-VM voltage is around 10V. Therefore 16V is recommended with margin?
Thank you,
Kauzki Kita…
Part Number: DRV8840 Hi
I want to use DRV8840 to control LED
when out1 out2 are H,L ,it turns on red
when out1 out2 are L,H ,it turns on green
the logic is control by pharse pin
but what is the max frequency the phase pin can receive the change the out1…
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…
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?