TI公司的DRV8305-Q1是三相馬達(dá)驅(qū)動的柵極驅(qū)動集成電路,提供三個高精度半橋驅(qū)動器,每個可驅(qū)動高邊和低邊N-MOSFET,電荷泵驅(qū)動器支持100%占空比,滿足汽車應(yīng)用的AEC-Q100規(guī)范,4.4V-45V工作電壓,峰值柵極驅(qū)動電流1.25A和1A,主要用在三相BLDC和PMSM馬達(dá),汽車油泵和水泵,汽車風(fēng)扇和鼓風(fēng)機(jī).本文介紹了DRV8305-Q1主要特性,框圖,典型應(yīng)用電路以及汽車兩軸電動座椅驅(qū)動參考設(shè)計TIDA-01330主要特性,框圖,電路圖,材料清單和PCB設(shè)計圖.

The DRV8305-Q1 device is a gate driver IC for threephasemotor-drive applicaTIons. The device providesthree high-accuracy half-bridge drivers, each capableof driving a high-side and low-side N-channelMOSFET. A charge pump driver supports 100% dutycycle and low-voltage operaTIon for cold cranksituations. The device can tolerate load dumpvoltages up to 45-V.

The DRV8305-Q1 device includes three bidirectionalcurrent-shunt amplifiers for accurate low-side currentmeasurements that support variable gain settings andan adjustable offset reference.

The DRV8305-Q1 device has an integrated voltageregulator to support an MCU or other system powerrequirements. The voltage regulator can be interfaceddirectly with a LIN physical interface to allow lowsystemstandby and sleep currents.

The gate driver uses automatic handshaking whenswitching to prevent current shoot through. The VDSof both the high-side and low-side MOSFETs isaccurately sensed to protect the external MOSFETsfrom overcurrent conditions. The SPI providesdetailed fault reporting, diagnostics, and deviceconfigurations such as gain options for the currentshunt amplifier, individual MOSFET overcurrentdetection, and gate-drive slew-rate control.

DRV8305-Q1主要特性:

1• 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-RateControl

• 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 DeviceSettings 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(yīng)用:

• Three-Phase BLDC and PMSM Motors

• Automotive Fuel and Water Pumps

• Automotive Fans and Blowers

圖1.DRV8305-Q1框圖

圖2.DRV8305-Q1典型應(yīng)用電路

汽車兩軸電動座椅驅(qū)動參考設(shè)計TIDA-01330

The TIDA-01330 design implements the drive circuitsfor two independent brushed DC motors. It provides asolution for automotive power seats with a highlyintegratedtwo-axis driver, reducing the overall bill ofmaterials. The interface to a simple microcontrollerIllustrates how the design reduces the processingburden on the control software.

In addition to the drive circuit for two motors, this TIDesign also includes current feedback sense circuitsand other diagnostic features to ensure reliableoperation and detection of faults. Additionally thecontrol circuit for an LED illumination element isimplemented, as well as the feasibility of providingtactile feedback to the seat occupant by vibrating ineither axis.

參考設(shè)計TIDA-01330主要特性:

• Drives Two Independent Brushed DC Motors

• Up to 10-A Motor Current (Each Axis)

• Current Feedback on Each Axis

• Reverse Battery Protection

• Low-Pass Filtering on Battery Power

• Drives LED for Floor Illumination

• Simple Microcontroller Interface

• Reduced Bill of Materials

參考設(shè)計TIDA-01330應(yīng)用:

• Power Seat Height and Forward and BackwardAdjustment

• Power Seat Back Recline Adjustment andPower Fold

• Other Two-Axis Brushed DC Motor Drives

圖3.參考設(shè)計TIDA-01330外形圖

參考設(shè)計TIDA-01330主要指標(biāo):

圖4.參考設(shè)計TIDA-01330框圖

圖5.參考設(shè)計TIDA-01330擴(kuò)展到五軸應(yīng)用圖

圖6.參考設(shè)計TIDA-01330電路圖

參考設(shè)計TIDA-01330材料清單:

圖7.參考設(shè)計TIDA-01330 PCB設(shè)計圖(1)

圖8.參考設(shè)計TIDA-01330 PCB設(shè)計圖(2)

圖9.參考設(shè)計TIDA-01330 PCB設(shè)計圖(3)

圖10.參考設(shè)計TIDA-01330 PCB設(shè)計圖(4)

圖11.參考設(shè)計TIDA-01330 PCB設(shè)計圖(5)

圖12.參考設(shè)計TIDA-01330 PCB設(shè)計圖(6)

圖13.參考設(shè)計TIDA-01330 PCB設(shè)計圖(7)

圖14.參考設(shè)計TIDA-01330 PCB設(shè)計圖(8)

圖15.參考設(shè)計TIDA-01330 PCB設(shè)計圖(9)