L6480: High side MOSFET of both h bridges not turning ON

[pinak]

Posted on October 01, 2013 at 05:34

Hello,

I am using L6480 stepper motor driver. I have connected my board with SPIN software. If I run the motor status is shown as motor is operated. But in this case High side MOSFET's (HVGA1 & HVGB1) does not turn ON. There is no gate supply on this FET's. All other FET's are working.

Kindly help me with the issue

#l6480

[Enrico Poli]

Posted on October 07, 2013 at 10:22

Hello,

What is the configuration of the gate drivers?

The suggested configuration for the demonstration boards is the following:

VCC value = 15 V,

UVLO threshold = 11 V (10 V on boot),

Gate current = 64 mA,

Controlled current time = 1 us,

Dead time = 250 ns,

Blanking time = 500 ns,

Turn OFF boost = disabled.

Regards

Enrico

Hello,

I am using L6480 stepper motor driver. I have connected my board with SPIN software. If I run the motor status is shown as motor is operated. But in this case High side MOSFET's (HVGA1 & HVGB1) does not turn ON. There is no gate supply on this FET's. All other FET's are working.

Kindly help me with the issue