原标题：TI DRV8323三相BLDC马达1kW功率级参考设计TIDA-00774

　　TI公司的DRV832x系列是带三个电流分流放大器的6-60V三相智能栅极驱动器.器件集成了三个独立的半桥栅极驱动器,电荷泵,用于高边和低边栅驱动的线性稳压器以及三个电流分流放大器和600mA降压稳压器,从而降低系统元件数量,成本和复杂性.标准串行外设接口(SPI)提供简便方法来配置各种参数设定和故障诊断信息.主要用在BLDC马达模块,CPAP,风扇和泵,电动自行车,电动工具和无人机,机器人和RC玩具以及ATM和点钞机.本文介绍了DRV832x系列主要特性,多种器件功能框图,以及三相无刷DC(BLDC)马达1kW功率级参考设计TIDA-00774主要特性,框图,电路图,材料清单和PCB设计图.

　　The DRV832x family of devices are integrated 6 to 60-V gate drivers for three-phase motor drive applications.These devices reduce system component count, cost, and complexity by integrating three independent halfbridgegate drivers, charge pump and linear regulator for the high-side and low-side gate driver supply voltages,optional triple current shunt amplifiers, and an optional 600-mA buck regulator. A standard serial peripheralinterface (SPI) provides a simple method for configuring the various device settings and reading fault diagnostic information through an external controller. Alternatively, a hardware interface (H/W) option allows for configuringthe most commonly used settings through fixed external resistors.

　　The gate drivers support external N-channel high-side and low-side power MOSFETs and can drive up to 1-Asource, 2-A sink peak currents with a 25-mA average output current. The high-side gate drive supply voltage isgenerated using a doubler charge-pump architecture that regulates the VCP output to VVM + 11 V. The low-sidegate drive supply voltage is generated using a linear regulator from the VM power supply that regulates to 11 V.

　　A smart gate-drive architecture provides the ability to dynamically adjust the output gate-drive current strengthallowing for the gate driver to control the power MOSFET VDS switching speed. This allows for the removal ofexternal gate drive resistors and diodes reducing BOM component count, cost, and PCB area. The architecturealso uses an internal state machine to protect against gate-drive short-circuit events, control the half-bridge deadtime, and protect against dV/dt parasitic turnon of the external power MOSFET.

　　The DRV8323 and DRV8323R devices integrate three, bidirectional current-shunt amplifiers for monitoring thecurrent level through each of the external half-bridges using a low-side shunt resistor. The gain setting of theshunt amplifier can be adjusted through the SPI or hardware interface with the SPI providing additional flexibilityto adjust the output bias point.

　　The DRV8320R and DRV8323R devices integrate a 600-mA buck regulator that can be used to power anexternal controller or other logic circuits. The buck regulator is implemented as a separate internal die that canuse either the same or a different power supply from the gate driver.

　　In addition to the high level of device integration, the DRV832x family of devices provides a wide range ofintegrated protection features. These features include power-supply undervoltage lockout (UVLO), charge-pumpundervoltage lockout (CPUV), VDS overcurrent monitoring (OCP), gate-driver short-circuit detection (GDF), andovertemperature shutdown (OTW/OTSD). Fault events are indicated by the nFAULT pin with detailed informationavailable in the SPI registers on the SPI device version.

　　The DRV832x family of devices are available in 0.5-mm pin pitch, QFN surface-mount packages. The QFN sizesare 5 × 5 mm for the 32-pin package, 6 × 6 mm for the 40-pin package, and 7 × 7 mm for the 48-pin package.

　　描述

　　DRV832x 系列器件是一款适用于三相 应用的集成式栅极驱动器。此类器件具有三个半桥栅极驱动器，每个驱动器都能够驱动高侧和低侧 N 沟道功率 MOSFET。DRV832x 使用集成电荷泵为高侧 MOSFET 生成合适的栅极驱动电压，并使用线性稳压器为低侧 MOSFET 生成合适的栅极驱动电压。此智能栅极驱动架构支持高达 1A 的峰值栅极驱动拉电流和 2A 的峰值栅极驱动灌电流。DRV832x 可以使用单电源工作，并支持宽输入电源范围，包括适用于栅极驱动器的 6V 至 60V 和 电压，以及适用于可选降压稳压器的 4V 至 60V 电压。

　　6x、3x、1x 和独立输入 PWM 模式可简化与控制器电路的连接。栅极驱动器和器件的配置设置具有高度可配置性，可通过 SPI 或硬件 (H/W) 接口实现。 DRV8323 和 DRV8323R 器件集成了三个低侧电流检测放大器，可在驱动级的全部三个相位上进行双向电流检测。DRV8320R 和 DRV8323R 器件集成了一个 600mA 降压稳压器。

　　提供了低功耗睡眠模式，以通过关闭大部分的内部电路实现较低的静态电流消耗。针对欠压锁定、电荷泵故障、MOSFET 过流、MOSFET 短路、栅极驱动器故障和过热情况提供内部保护功能。故障状况及故障详情可通过 SPI 器件型号的器件寄存器显示在 nFAULT 引脚上。

　　特性

　　三个半桥栅极驱动器

　　可驱动 3 个高侧和 3 个低侧 N 沟道 MOSFET (NMOS)

　　智能栅极驱动架构

　　可调压摆率控制

　　10mA 至 1A 峰值拉电流

　　20mA 至 2A 峰值灌电流

　　集成栅极驱动器电源

　　支持 100% PWM 占空比

　　高侧电荷泵

　　低侧线性稳压器

　　工作电压范围 6V 至 60V

　　可选集成式降压稳压器

　　LMR16006X SIMPLE SWITCHER®

　　4V 至 60V 工作电压范围

　　0.8V 至 60V、600mA 输出能力

　　三个可选集成式电流检测放大器 (CSA)

　　可调增益(5、10、20、40 V/V)

　　双向或单向支持

　　提供有 SPI 和硬件接口

　　6x、3x、1x 和独立的 PWM 模式

　　支持 1.8V、3.3V 和 5V 逻辑输入

　　低功耗睡眠模式 (12µA)

　　3.3V、30mA 线性稳压器

　　紧凑型 QFN 封装和尺寸

　　采用电源块的高效系统设计

　　集成式保护 特性

　　VM 欠压闭锁 (UVLO)

　　电荷泵欠压 (CPUV)

　　MOSFET 过流保护 (OCP)

　　栅极驱动器故障 (GDF)

　　热警告和热关断 (OTW/OTSD)

　　故障状态指示器 (nFAULT)

　　DRV832x系列主要特性:

　　1• Triple Half-Bridge Gate Driver

　　– Drives High-Side and Low-SideN-Channel MOSFETs

　　– Supports 100% PWM Duty Cycle

　　• Smart Gate Drive Architecture

　　– Adjustable Slew Rate Control

　　– 10-mA to 1-A Peak Source Current

　　– 20-mA to 2-A Peak Sink Current

　　• Integrated Gate Driver Power Supplies

　　– High-Side Charge Pump

　　– Low-Side Linear Regulator

　　• 6 to 60-V Operating Voltage Range

　　• Optional Integrated Buck Regulator

　　– LMR16006X SIMPLE SWITCHER®

　　– 4 to 60-V Operating Voltage Range

　　– 0.8 to 60-V, 600-mA Output Capability

　　• Optional Integrated Triple CurrentShunt Amplifiers

　　– Adjustable Gain (5, 10, 20, 40 V/V)

　　– Bidirectional or Unidirectional Support

　　• Selectable SPI or Hardware Interface

　　• 6x, 3x, 1x, and Independent PWM Modes

　　• Supports 1.8-V, 3.3-V, and 5-V Logic Inputs

　　• Low-Power Sleep Mode (20-μA)

　　• Linear Voltage Regulator, 3.3 V, 30 mA

　　• Compact QFN Packages and Footprints

　　• Efficient System Design With CSD88599Q5DC

　　• Integrated Protection Features

　　– VM Undervoltage Lockout (UVLO)

　　– Charge Pump Undervoltage (CPUV)

　　– MOSFET Overcurrent Protection (OCP)

　　– Gate Driver Fault (GDF)

　　– Thermal Warning and Shutdown (OTW/OTSD)

　　– Fault Condition Indicator (nFAULT)

　　DRV832x系列应用:

　　• BLDC Motor Modules

　　• CPAPs, Fans, and Pumps

　　• E-Bikes

　　• Power Tools and Lawn Appliances

　　• Drones, Robotics, and RC Toys

　　• ATM and Currency Counting

　　三相无刷DC(BLDC)马达1kW功率级参考设计TIDA-00774

　　The TIDA-00774 is a 1-kW power stage for a threephasebrushless DC (BLDC) motor in power toolsoperating from a 5-cell Li-ion battery with a voltage upto 21 V. The design is a 65-mm×60-mm compactdrive, implementing sensor-based trapezoidal control.

　　The design takes advantage of TI’s MOSFET PowerBlock technology, which integrates two FETs in halfbridgeconfiguration into a single SON 5×6 package,enabling very high power density. The design uses twopower blocks in parallel and delivers 50-ARMScontinuous (120-A peak for 3 seconds, 160-A peak for1 second) winding current. The MOSFET power blockwith minimum parasitic inductance and the currentcontrolled gate driver with slew rate control helps ineffective MOSFET paralleling and reduces switching spikes. The current sensing is done by monitoringMOSFET VDS. The board provides cycle-by-cycleovercurrent and short-circuit protection.

　　1kW功率级参考设计TIDA-00774主要特性:

　　• 1-kW Drive for BLDC Motor Supporting Sensor-Based Trapezoidal Control

　　• Designed to Operate From 6 to 21 V

　　• Continuous Output Current up to 50-ARMS

　　• Peak Current Capability of 120 A for 3 Secondsand 160 A for 1 Second

　　• Small PCB Form Factor of 65-mm×60-mm Using40-V/400-APEAK, 1-mΩ RDS_ON, SON5×6 PackageHalf-Bridge Power Blocks

　　• 18-V/680-W, 33-ARMS Without Heat Sink

　　• Motor Current Sensing by Monitoring the VDS ofMOSFETs, Enables Elimination of Shunt Resistor

　　• Cycle-by-Cycle Overcurrent and Motor StallCurrent Non-Latching Limit and Short-Circuit LatchProtection by VDS Sensing

　　• Shoot-Through, Undervoltage, Over-Temperature,and Blocked Rotor Protection

　　• Effective MOSFET Paralleling With ExcellentDynamic Current Sharing

　　• Option for Single PWM Control

　　• Operating Ambient: –20°C to 55°C

　　1kW参考设计TIDA-00774应用:

　　• Cordless Power Tools

　　• Cordless Garden Tools

　　• E-Bikes

　　图.1kW参考设计TIDA-00774外形图

　　1kW参考设计TIDA-00774主要指标:

　　1kW参考设计TIDA-00774材料清单: