L99SM81V数据手册集成电路（IC）的电机驱动器控制器规格书PDF

描述 Description

The L99SM81V is an automotive grade integrated driver for bipolar two-phase stepper motors capable of current controlled micro-stepping with programmable amplitude. The device features a 5 V voltage regulator to supply external sensors.

The integrated Serial Peripheral Interface (SPI) makes it possible to adjust device parameters, control all operating modes and read out diagnostic information. Digital I/Os are also optionally usable for more flexible and reliable application control.

特性 Features

• AEC-Q100 qualified
• Stepper motor driver with up to 1.35 A current capability
• Programmable stepping mode:
•Full step, Half step, Mini step, 1/8 Micro step, 1/16 Micro step
• Current regulation by integrated PWM control with fully integrated current sensing
• Equivalent 10 bit resolution on current regulation loop:
•Two 4-bit programmable full scale current amplitudes: one for RUN and one for HOLD mode
•6-bit DAC for reference current generation (whatever programmed full scale amplitude)
• 4 programmable decay modes:
•Slow-mode, mixed-mode and 2x automatically selected decay-modes
• 3x programmable inputs for direct control of step clock, direction, hold and step modes
• 1x programmable analog output for Tj measurement or band-gap reference
• 2x programmable digital outputs for internally generated PWM ON duty cycles, error signals, coils voltage measurement synchronization signals
• Programmable MOSFETs switching speed: four options for EMC and power dissipation trade-off optimization
• PWM frequency wobbling for reduction of conducted EM energy
• Outputs protection and diagnosis (open load, short to battery, short to GND)
• Integrated ADC for coil voltage measurement and stall detection
• 5 V low drop voltage regulator short-circuit protected
• Very low current consumption in standby mode (typ. 10 µA)
• Thermal warning and shutdown
• ST SPI 4.0 interface for control and diagnostics

简介

L99SM81V属于集成电路（IC）的电机驱动器控制器。由制造生产的L99SM81V电机驱动器，控制器产品属于电机驱动器和控制器电源管理集成电路 (PMIC) 系列，可用于控制或操作从某电源施加到电机或相关机电执行器的电源。所实现的具体功能和特性集根据预期负载和预期应用的特性有很大差异，范围从用于有刷电机的简单开环速度控制到基于步进电机的高级闭环运动控制。