Pololu H2 High-Power Motor Driver 36v11 CS - which H-bridge driver does it use?

Support Motor controllers/drivers and motors
1

Which H-bridge gate driver IC does the Pololu H2 High-Power Motor Driver 36v11 CS use, please?

BR,

David

2

Hello, David.

We do not disclose or commit to specific components on that board. Is there a reason you are asking?

Brandon

3

Hello Brandon,

I’m planning to use two 36v11 to drive a pair of brushed DC-motors in opposition to get a backlash-free gear-train. One motor for forward and the other motor for reverse, while using the shutdown pin to switch off or to PWM modulate the braking. Thus I want to know the guaranteed behaviour of the gate driver when shutdown transitions high and low when there is an EMF present from the load (the mechanically back-driven “passive” motor acting as a generator).

Further, it’s good to know the guaranteed rise times of the gate drive currents for EMC reasons, and for Miller effect (load to gate capacitively coupled energy) reasons.

BR,

David

4

Please note that the nSLP pin on the H2 High-Power Motor Driver 36v11 CS is not intended to have a PWM signal applied to it. You might consider the High-Power Motor Driver 36v20 CS, which has more control options.

If you email us (and refer to this forum thread), we can probably get you some more details.

Brandon

5

Compared to the 36v20, the 36v11 has 10V better maximum input voltage and much improved protection against reversed input voltage, overcurrent and overtemperature. That aside, I too would have preferred the 36v20.

I´ll mail you.

David