TI DRV8328A 4.5V-60V三相BLDC栅极驱动器解决方案

TI公司的DRV8328系列是三相应用的集成栅极驱动器,提供三个半桥栅极驱动器,每个能驱动高边和低边N沟功率MOSFET.器件采用内部电荷泵来产生正确的栅极驱动电压,采用自举电路来增强高边MOSFET.涓流电荷泵支持100%占空比.栅极驱动架构支持峰值栅极驱动电流高达1A源和2A沉.DRV8328能从单电源工作,支持4.5V到60V宽输入电源范围. 6x 和3x PWM模式允许简单接口到控制器电路. DRV8328C 和DRV8328D版本集成了精确3.3V LDO,用来给外接控制器供电,用作CSA的基准.栅极驱动器和器件的配置设定通过硬件(H/W)引脚可配置.低功耗睡眠模式通过并联大多数内部电路提供低静流电流消耗.内部保护功能包括欠压锁住,GVDD故障,MOSFET过流,MOSFET短路和超温.故障条件在nFAULT引脚上显示.器件采用4x4mm 28引脚QFN封装.65V三相半桥栅极驱动器,驱动3个高边和3个低边N沟MOSFET(NMOS),工作电压范围为4.5V到60V,支持100% PWM占空比,具有涓流电荷泵,1000mA最大峰值源电流,2000mA最大峰值沉电流,硬件接口提供简单配置, 25 ̊C时超低功耗睡眠模式小于1 uA,相位间的传输时延匹配为4ns(典型值).主要用在BLDC马达模块和PMSM,无绳花园和电动工具,割草机,家用电器风扇和泵,伺服驱动器,电动自行车,电动滑板车, 无绳真空吸尘器,机器人,工业和物流机器人以及RC玩具.本文介绍了DRV8328A主要特性, 功能框图和简化电路, 栅极驱动器框图,应用电路图和评估模块DRV8328AEVM主要特性 和电路图.

The DRV8328 family of devices is an integrated gate driver for three-phase applications. The devices provide three half-bridge gate drivers, each capable of driving high-side and low-side N-channel power MOSFETs. The device generates the correct gate drive voltages using in internal charge pump and enhances the high-side MOSFETs using a bootstrap circuit. A trickle charge pump is included to support 100% duty cycle. The Gate Drive architecture supports peak gate drive currents up to 1-A source and 2-A sink. The DRV8328 can operate from a single power supply and supports a wide input supply range

of 4.5 to 60 V.

The 6x and 3x PWM modes allow for simple interfacing to controller circuits. DRV8328C and DRV8328D variants has integrated accurate 3.3-V LDO that can be used to power external control...