Hi Brian,
The DRV8251 and DRV8251A have a built-in H-bridge. When VM is input, it is output to the motor through the built-in FET. So the VM voltage should drop by the internal FET RDSON multiplied by the motor current. When we define the OUT pin voltage…
Part Number: DRV8251 Hi Team, Seeking your comments.
Set Itrip with VREF and Rsense to be above the maximum current used in the application. Itrip would only be achieved in an over current condition. The Rsense voltage would be sensed by an external circuit…
Part Number: DRV8251
Hi Experts,
Seeking your assistance on this query about DRV8251 from Cx:
I have been testing the DRV8251 as a replacement for the ST L6201 to drive a stepper motor. Everything was going great until it was noticed that the application…
Hi Statham,
Below is the requested information:
at 25C temperature:
VM
V_ISENSE (Average)
4.5V
9.81 V
6.5V
9.81 V
24 V
9.81 V
50 V
9.85 V
The V_ISENSE measurement above is the max V_ISENSE voltage in order to cause current regulation to…
Part Number: DRV8251 Hi Team,
Can you let me know the maximum transient current for this device?
I would like to know the he maximum transient current the driver can withstand without causing damage to the chip.(for example: 8A in <600ns?)
There is…
Part Number: DRV8251 Other Parts Discussed in Thread: DRV8874 Hi Team,
My customer is using AT8236, which is a BDC driver with following spec, 4.5A peak current, 3 A continue current, Typical RDSon(HS + LS) is 200mΩ. Customers have found that the AT8236…
Part Number: DRV8251 Other Parts Discussed in Thread: DRV8872 , , DRV8872EVM ,
Team,
Both DRV8872/DRV8251 have a DDA|8 package.
Can a DRV8872 PCB (like the DRV8872EVM below) be used "as is" with DRV8251 ? I looked at the DRV8251EVM schematics as…
Part Number: DRV8251 Q1) There seems to be three system faults(OCP, TSD, UVLO). if one of them occurs, how can MCU know the occurrence of this fault(Motor stop by fault)? Can you recommend a topology to do that?
Q2) Let's assume that ITRIP(current…
Part Number: DRV8251 Can you explain the difference between "Coast"(fast current decay) and "Brake"(low-side slow decay)?
I think "Coast" seems to be free-run. am I correct?
What will real differ when I select "Coast" instead…