TI DRV8243-Q1汽车H桥驱动器解决方案

TI公司的DRV824x-Q1系列是全集成H桥驱动器,具有集成的电流检测和诊断,可用于各种的汽车应用.器件可配置成单个全桥驱动器或两个单独的半桥驱动器.器件采用BiCMOS大功率工艺技术,这种功率封装的单片系列器件提供极好的功率处理和热功能而提供紧凑封装尺寸,容易布局,EMI控制,精确电流检测,鲁棒性和诊断功能.该系列产品还具有一模一样的引脚功能和可缩放的RON(电流功能),以支持不同的负载.器件集成了N沟H桥,电荷泵调整器,高边电流检测和调整,电流正比输出和保护电路.低功耗睡眠模式提供低静态电流.器件提供电压监测和负载以及对过流和超温的保护特性.故障条件在nFAULT引脚上显示.器件有三种变型或版本:硬件接口HW(H)和连个SPI接口SPI(P)和SPI(S),而SPI (P)用于外接逻辑电源,SPI(S)用于内部产生的逻辑电源.SPI接口变种在器件配置和故障可观测性提供更多的灵活性.主要用在汽车有刷DC马达,螺线管以及车门模块,后视镜模块和座椅模块,车体控制模块(BCM),电子换挡旋钮, 燃气发动机系统和车载充电器.本文介绍了DRV8243-Q1主要特性,简化电路,多种变体版本功能框图与应用电路图, 评估板DRV824x-Q1EVM和DRV814x-Q1EV主要特性,电路图和材料清单与PCB设计图.

DRV8243-Q1 Automotive H-Bridge Driver with Integrated Current Sense and Diagnostics

The DRV824x-Q1 family of devices is a fully integrated H-bridge driver intended for a wide

range of automotive applications. The device can be configured as a single full-bridge driver or as two independent half-bridge drivers. Designed in a BiCMOS high power process technology node, this monolithic family of devices in a power package offer excellent power handling and thermal capability while providing compact package size, ease of layout, EMI control, accurate current sense, robustness, and diagnostic capability. This family also has identical pin function with scalable RON (current capability) to support different loads.

The devices integrate a N-channel H-bridge, charge pump regulator, high-side current sensing and regulation, current proportional output, and protection circuitry. A low-power sleep mode is provided to achieve low quiescent current. The devices offer voltage monito...