Part Number: DRV8711 Other Parts Discussed in Thread: TIDA-01227 , CSD19538Q3A , , LM5107 Tool/software: Dear TI Technical Support Team,
I am currently working on a 4-channel stepper motor driver design using the DRV8711 IC, where we have selected SQJ952EP…
Part Number: DRV8821 Other Parts Discussed in Thread: TIDA-01227 , DRV8711 , Hi,
I want to design High Voltage Stepper Driver as in TIDA-01227 reference design but for two stepper motors.
Is it possible to apply same analogy used for DRV8711 to DRV8821…
Hi David,
Raising the common drains above the VM voltage will decrease the Vgs of the high side FETs. Eventually the FETs will not turn be enabled.
A quick example is using 60V at the common drains and 48V at VM. When GH is enabled, the FETs are essentially…
Hi Kevin,
TI does not have other devices available at higher voltages.
The recommended max supply voltage of the DRV8711 is 52V, and the absolute max voltage is 60V.
There is a reference design that converted the DRV8711 to a higher voltage. This…
Hi Jim,
This may be possible, but generally requires some thought regarding how the protection circuitry is affected. Also, use of 100% duty cycle may no longer be available.
An example of how this could be done is www.ti.com/.../TIDA-01227
This…
Hi Mohamed,
Please consider the DRV8704. The device can operate to 52V, with an absolute maximum of 60V.
If you use this device, you may need to add clamping circuitry on the VM supply to keep VM below the absolute maximum voltage.
Another possible…
Hi Artur,
It may be possible to do as you desire, but there are protection features that have to be disabled. The VDS is one of them.
Another item to consider is many external drivers do not have a charge pump. This will limit the duty cycle to less…
Hi dannytt,
The DRV8302 cannot operate at 200 to 400V DC. The signals can be converted to control half bridge drivers.
An example of circuitry that could be used to increase the operational range can be found here: www.ti.com/.../TIDA-01227 This…
Hi Michael,
The DRV8701 is designed for driving N-channel high side FETs, and at lower voltages. To drive such high voltages, there are a few choices.
One choice is to use the UCC27714 with both low side and high side N-channel FETs. This could…
