Part Number: DRV8839 Hello,
We're using the DRV8839 as a full-bridge driver for a 125 kHz inductive RFID antenna; see the attached schematic.
During radiated emission tests, we detected spurious signals at frequencies of ~46 MHz, 92 MHz, and so on…
Part Number: DRV8839 Hi
I am thinking to use DRV8839 for Brushed DC motor driving.
The motor coil current need to be regulated so that the speed of the motor can be controlled precisely.
Also the motor is a low inductance DC motor. So the current…
Hi user4872449,
In the MDBT42Q – 512KV2 module datasheet, there is a statement:
Welcome to send us your layout in PDF for review at ...
Thank you for confirming there is no problem without the motor.
A scope is really needed to debug. Please try…
Part Number: DRV8839 Other Parts Discussed in Thread: DRV8832-Q1 Hello team.
My customer needs a H-bridge or half-bridge driver which VM can support VM 1.2V-1.5V (OUT is about 1.2V-1.5V).
I found DRV8839 can support this like below, but it is not…
We do not recommend connecting VM and VCC together at 7V. When VM and VCC are connected, a voltage spike on the motor load can cause VM to exceed 7V and violate the absolute maximum VCC voltage of 7V. We recommend lowering the voltage on VCC. Please consider…
Hi Bruno,
The image attached did not appear. Would you please re-send it?
Also, can you provide a snippet of your schematic showing all connections to the DRV8839?
In particular, we are interested in bulk capacitors, external components to and from…
Part Number: DRV8839 Other Parts Discussed in Thread: DRV8837 , Dears:
We are checking the performance between DRV8839 and DRV8837.
Could you give some advice about the below questions:
1. DRV8837 has two braking mode when it controls two motors…
Hi Dinesh,
Issue 1: During higher speed LCD back light flickering Issue arrive.
Can you provide more details?
What is higher speed?
What is the VM voltage?
What is the duty cycle?
Can you provide scope captures of VM, the inputs, and outputs…
