DRV8711: DRV8711 USB/SPI

Hi Iuri,

If you turn off driver power (VM = 0), the parameters are reset.

What do you mean "I can use a USB / SPI adapter to parameterize the DRV8711 using the software"? The GUI communicates to the MSP430 using a USB to UART protocol converter (the FTDI device).

Hi Rick

Le the DRV8711 only and functional
Along with some microcontroller
If I want to use it as DIR / STEP I will have to have a microcontroller to keep parameterized whenever power on, ok

Are there any other Ci similar to the DRV8711 with parallel parameterization
Or it is possible to add H-bridge to the DRV8825
In order to increase its current and voltage?

Tanks

Hi Iuri,

The DRV8711 is the only stepper motor controller that has external FETs.

You cannot add an H-Bridge to the DRV8825 (or any stepper driver with integrated FETs).

What voltage and current do you need?

Hi Iuri,

The recommended max voltage of the DRV8711 is 52V, and requires an mcu plus external FETs.

The recommended voltage of the L6203 is 48V, and a mcu plus additional circuitry to regulate the current is required to control the device.

Hi Rick

Sorry my english is not good I use the translator !
In the data sheet of the DRV8825 figure 2
It has the block design of the H bridge and predriver

poderia me descrever a função de OCP ?

In the circuit there are 3 VMs
VMA and VMB are connected only to Drain MOSFETs ?

AOUT and BOUT outputs are linked only to Drain, s and sourse, s ?

Is it possible to connect 2 DRV8825s in parallel?
I saw something in a video but there is no sync pin between them
So the doubt
I do not know if it is allowed to post videos link in the forum
but let's go www.youtube.com/watch

The voltage of the DRV8825 would suit me but the current would not!
1.75ARMS X 2 = 3.5ARMS would be ideal

The DRV8711 unfortunately does not answer me because I need to parameterize it
only once

Thank you for your help

Hi Iuri,

Is it possible to connect 2 DRV8825s in parallel?

No, it is not possible. The timing of the two devices would interfere with each other.

Why is it a problem to write to the DRV8711 SPI registers upon power up?

Hi Rick

On the equipment not a computer to do the parameterization
Unless I use a microcontroller but I have no practice
With MSP430 family microcontrollers or SPI or SERIAL communication in general
I have good knowledge in electronics but little in programming
At first my idea was to make a PARALLEL ADAPTER for SPI for
Dip suit but there would be numerous keys for all parameters remembering that I use DIR / STEP only

thank you