STMicroelectronics EVAL-L9942评估板

STMicroelectronics EVAL-L9942的设计，是为了给用户提供一个评估L9942的平台。L9942是适用于双极步进电机的电机驱动器，带微步进和可编程电流曲线查找表，以实现对电机特征曲线和预期工作状况的灵活调整。可以根据目标条件：可听噪声、振动、转速或转矩的不同，而选择不同的电流曲线。PWM-电流控制电路使用的衰减模式可设为慢速、快速、混合以及自动衰减。可编程失速检测很有用，可以防止在失速时运行电机过久，以降低噪声。EVAL-L9942评估板提供了正确驱动双极步进电机所需的所有输入输出功能，以及监控诊断功能。该评估板可连接针对SPC56微控制器开发的探索板。

The EVAL-L9942 Evaluation Board provides all the inputs and outputs capabilities necessary to drive correctly a bipolar stepper motor and also to monitoring diagnostic functionalities. The board can also be connected to the Discovery Boards developed for the SPC56 Microcontroller.

特性

Input signal connector compatible with the SPC56 Discovery boards. Possibility to connect the board to further microcontroller discovery or control boards by a simple adaptor
Two output terminal blocks.
Wide supply voltage range (VBatt): 7V ÷ 20V
2 LEDs for monitoring VBatt and EN signal
Device controlled and programmed via SPI
L9942 diagnostic functions via SPI
Test points to monitoring both input signals (SPI, PWM, EN, StepClock) and the four outputs (out power stage)
No heat-sink is required