TI公司的DRV8305-Q1是三相馬達驅動用的柵極驅動器，提供三個半橋驅動器，每個能驅動高邊和低邊N溝MOSFET;電荷泵驅動器支持100%占空比。器件滿足AEC-Q100標準，4.4-V 到45-V工作電壓，柵極峰值電流1.25A和1A，工作溫度–40℃到150℃，主要用在三相BLDC和PMSM馬達，汽車油泵和水泵，風扇和鼓風電動機。本文介紹了DRV8305-Q1主要特性，功能框圖，典型應用電路圖以及DRV8305-Q1EVM汽車三相馬達柵極驅動評估模塊主要特性，框圖，電路圖和材料清單。

　　The DRV8305-Q1 device is a gate driver IC for three-phase motor-drive applications. The device provides three high-accuracy half-bridge drivers， each capable of driving a high-side and low-side N-channel MOSFET. A charge pump driver supports 100% duty cycle and low-voltage operation for cold crank situations. The device can tolerate load dump voltages up to 45-V.

　　The DRV8305-Q1 device includes three bidirectional current-shunt amplifiers for accurate low-side current measurements that support variable gain settings and an adjustable offset reference.

　　The DRV8305-Q1 device has an integrated voltage regulator to support an MCU or other system power requirements. The voltage regulator can be interfaced directly with a LIN physical interface to allow low-system standby and sleep currents.

　　The gate driver uses automatic handshaking when switching to prevent current shoot through. The VDS of both the high-side and low-side MOSFETs is accurately sensed to protect the external MOSFETs from overcurrent conditions. The SPI provides detailed fault reporting， diagnostics， and device configurations such as gain options for the current shunt amplifier， individual MOSFET overcurrent detection， and gate-drive slew-rate control.

　　Device Options：

　　DRV8305NQ： Grade 1 with voltage reference

　　DRV83053Q： Grade 1 with 3.3-V， 50-mA LDO

　　DRV83055Q： Grade 1 with 5-V， 50-mA LDO

　　DRV8305NE： Grade 0 with voltage reference

　　DRV8305-Q1主要特性：

　　AEC-Q100 Qualified for Automotive Applications

　　Ambient Operating Temperature Ranges：

　　Temperature Grade 0（E）： –40℃ to 150℃

　　Temperature Grade 1（Q）： –40℃ to 125℃

　　4.4-V to 45-V Operating Voltage

　　1.25-A and 1-A Peak Gate Drive Currents

　　Smart Gate Drive Architecture （IDRIVE & TDRIVE）

　　Programmable High- and Low-Side Slew-Rate Control

　　Charge-Pump Gate Driver for 100% Duty Cycle

　　Three Integrated Current-Shunt Amplifiers

　　Integrated 50-mA LDO （3.3-V and 5-V Option）

　　3-PWM or 6-PWM Input Control up to 200 kHz

　　Single PWM-Mode Commutation Capability

　　Serial Peripheral Interface （SPI） for Device Settings and Fault Reporting

　　Thermally-Enhanced 48-Pin HTQFP

　　Protection Features：

　　Fault Diagnostics and MCU Watchdog

　　Programmable Dead-Time Control

　　MOSFET Shoot-Through Prevention

　　MOSFET VDS Overcurrent Monitors

　　Gate-Driver Fault Detection

　　Reverse Battery-Protection Support

　　Limp Home-Mode Support

　　Overtemperature Warning and Shutdown

　　DRV8305-Q1應用：

　　Three-Phase BLDC and PMSM Motors

　　Automotive Fuel and Water Pumps

　　Automotive Fans and Blowers

圖1.DRV8305-Q1功能框圖

　　圖2.DRV8305-Q1典型應用電路圖

　　DRV8305-Q1EVM汽車三相馬達柵極驅動評估模塊

　　The DRV8305-Q1EVM evaluation module （EVM） is a 4.4 V to 45 V， 25 A， 3-phase motor drive and control system based on the DRV8305-Q1 automotive motor gate driver， TMS320F28027 motor control microcontroller， and CSD18540Q5B NexFET? power MOSFET. The EVM allows for simple evaluation of the DRV8305-Q1 with a wide array of test points， interfaces， and configurability.

　　The EVM has onboard reverse battery protection， a regulated 3.3 V supply from the TPS7B6933-Q1 LDO， interface header for all control and feedback signals ， and onboard XDS100v2 emulator. The EVM has individual DC bus and phase voltage sense as well as individual low-side current shunt sense for sensorless BLDC control algorithms. The drive stage is fully protected with short circuit， thermal， shoot-through， and undervoltage protection and is easily configurable via an SPI interface.

　　The EVM is ideal for evaluation and rapidly developing with the DRV8305-Q1， with primary software support through MotorWare using the InstaSPIN-FOC sensorless control solution.

　　圖3.DRV8305-Q1EVM外形圖

　　DRV8305-Q1EVM主要特性：

　　4.4 V to 45 V Operating Supply Voltage Range

　　Supports up to 25 A Continuous Output Current

　　Provides Phase Voltage and Current Feedback ForSensorless BLDC Control Solutions

　　Complete Brushless DC Control and Drive Stage

　　Onboard XDS100v2 Emulator

　　What’s Included

　　DRV8305-Q1 Evaluation Board

　　Micro-USB Cable

圖4.DRV8305-Q1EVM框圖

圖5.DRV8305-Q1EVM電路圖(1)

圖6.DRV8305-Q1EVM電路圖(2):MCU DRV

圖7.DRV8305-Q1EVM電路圖(3):電源

圖8.DRV8305-Q1EVM電路圖(4):橋

DRV8305-Q1EVM材料清單: