DRV8256中文资料采用集成电流感应和智能调优技术的 50V、8A H 桥电机驱动器数据手册TI规格书

描述 Description

The DRV8256E/P devices are single H-bridge motor drivers for a wide variety of industrial applications. The devices integrate an N-channel H-bridge, charge pump regulator, current sensing and regulation, and protection circuitry.

Integrated current sensing allows the driver to regulate the motor inrush current during start up and high load events. A current limit can be set with an adjustable external voltage reference. The integrated current sensing uses an internal current mirror architecture, removing the need for a large power shunt resistor, saving board area and reducing system cost. A low-power sleep mode is provided to achieve ultra-low quiescent current draw by shutting down most of the internal circuitry.

Internal protection features are provided for supply undervoltage lockout (UVLO), charge pump undervoltage (CPUV), output overcurrent (OCP), and device overtemperature (TSD). Fault conditions are indicated on nFAULT.

特性 Features

• N-channel H-bridge motor driver
• Two unidirectional brushed DC motors
• Integrated current sensing and regulation
• Multiple control interface options
• PWM (IN/IN)
• Smart tune, fast and mixed decay options
• High Output Current Capability: 6.4-A peak
• Configurable Off-Time PWM Chopping
• Supports 1.8 V, 3.3 V, 5.0 V logic inputs
• Spread spectrum clocking for low EMI
• VM undervoltage lockout (UVLO)
• Overcurrent protection (OCP)
• Fault condition output (nFAULT)

简介

DRV8256属于集成电路（IC）的电机驱动器控制器。由TI制造生产的DRV8256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。