The Windows Application
16
SLVU701B – March 2012 – Revised July 2019
Copyright © 2012–2019, Texas Instruments Incorporated
DRV8834 Evaluation Module
Figure 20. DRV8834EVM.exe Main Screen
All the control signals needed to control motor enablement (nENABLE or ENABLEx), direction of rotation
(PHASEx or DIR), current control (VREFx) and PWM control for both enablement and direction control
signals are made available throughout one of the three control tabs.
Each one of the three tabs will place the microcontroller and driver chip into one of the three operation
modes. The three tabs are described below.
4.1
Dual H Bridge Mode
See
While in this mode, the microcontroller treats the DRV8834 as a dual H-bridge driver with independent
current regulation, motor enablement and phase control.
In this mode, the Windows application offers control to ENABLE each of the two motors and control the
rotation direction. It also allows control of the speed and/or direction by offering access to a PWM
resource to each of the ENABLEx and PHASEx signals. Both H-bridges can be programmed with a
current regulation parameter by moving the VREFx slider. Other control signals are offered in the form of
check boxes.
