UC2950中文资料4A 半桥双极开关数据手册TI规格书

描述 Description

This device is a monolithic integrated circuit designed to provide high-current switching with low saturation voltages when activated by low-level logic signals. Source and sink switches may be independently activated without regard to timing as a built-in interlock will keep the sink off if the source is on.

This driver has the high current capability to drive large capacitive loads with fast rise and fall times; but with high-speed internal flyback diodes, it is also ideal for inductive loads. Two UC2950s can be used together to form a full bridge, bipolar motor driver compatible with high frequency chopper current control.

特性 Features

• Source or Sink 4.0A
• Supply Voltage to 35V
• High-Current Output Diodes
• Tri-State Operation
• TTL and CMOS Input Compatibility
• Thermal Shutdown Protection
• 300kHz Operation
• Low-Cost TO-220 Package

简介

UC2950属于集成电路（IC）的全半桥驱动器。由TI制造生产的UC2950全半桥驱动器器件属于电桥驱动器电源管理集成电路 (PMIC) 系列，包含两个或多个功率晶体管，以及在外部器件控制下将其用作开关所需的电路。这些晶体管通常在内部配置为成对串联连接（称为半桥），因而任意指定晶体管对之间的结点都可以连接至两个电源轨中的任一个。这类器件常用于将控制器件（如微控制器）提供的低电平信号转换为操作执行器（如步进电机或无刷电机）所需的较大功率信号。