The DRV841xEVM comes with various features
for facilitating the validation of the DRV841x family of low voltage stepper motor drivers.
Below is a list of the features included in this family of EVM:
3.3 V LDO for supplying power to digital
circuitry.
Note: The DRV841x family of
devices can operate as low as 1.65 V. If the power supply is less than 3.3 V, an
external 3.3 V supply is required.
Onboard eZ-FET lite circuit for MSP
debugging. The eZ-FET lite allows for programming the MCU with a custom code via USB. No
external hardware tool is required for programming. This eZ-FET lite circuit also
facilitates updating of firmware when a new version of the firmware is available.
Graphical User Interface (GUI) to control
the driver input signals (nSLEEP, AIN1, IN2, BIN1, BIN2). More information regarding the
GUI in Section 5.
Main signal header with tests points and
shunts to easily remove the signal connections between the driver IC and the MCU. User can
connect external MCU to control the motor driver on the EVM. More details are shown in
Section 2.
Hardware is design so that the driver can
be set to dual h-bridge and parallel h-bridge control by header jumper settings and GUI.
The different control modes are explained in Section 5
Test points for most important signals
such as the control inputs, driver output, power supplies, LDO output, and so forth. for
ease of measurement.