This module is a compact breakout board for ST’s high-power VNH5019 motor driver IC, a fully integrated H-bridge that can be used for bidirectional speed control of a single brushed DC motor. The basic operation of the driver is summarized below, but we also recommend careful reading of the VNH5019 datasheet (1MB pdf) before using this product. The board incorporates most of the components of the typical application diagram on page 14 of the VNH5019 datasheet, including pull-up and current-limiting resistors and a FET for reverse battery protection. It ships fully populated with its SMD components, including the VNH5019, as shown in the product picture.
Operating voltage: 5.5 – 24 V1
Output current: 12 A continuous (30 maximum)
PWM operation up to 20 kHz, which is ultrasonic and allows for quieter motor operation
Current sense output proportional to motor current (approx. 140 mV/A; only active while H-bridge is driving)
Motor indicator LEDs (indicates what the outputs are doing even when no motor is connected)
Robust:Reverse-voltage protection to -16 V
Can survive input voltages up to 41 V
Undervoltage and overvoltage shutdown
High-side and low-side thermal shutdown
Short-to-ground and short-to-Vcc protection
|5.5 – 24 V
|MOSFET on-resistance (per leg)
|18 mΩ typ.
|Max PWM frequency
|0.14 V/A typ.
|24 V min. / 27 V typ.
|Logic input high threshold
|2.1 V min.