TI公司的DRV8802-Q1是汽車電子1.6A雙路無刷DC馬達驅動器,具有兩個H橋驅動器.輸出驅動器包括可配置成H橋的N溝功率MOSFET,每和H橋提供1.1A RMS或峰值電流1.6A,滿足AEC-Q100規范,工作溫度–40℃到125℃,主要用在汽車HVAC,汽車閥門和汽車娛樂系統.本文介紹了DRV8802-Q1主要特性,功能框圖和應用電路,以及參考設計TIDA-01357主要特性,框圖,電路圖,材料清單和PCB設計圖和合成圖.

The DRV8802-Q1 device provides an integrated motor driver solution for automotive applications. The device has two H-bridge drivers, and is intended to drive DC motors. The output driver block for each consists of N-channel power MOSFET’s configured as H-bridges to drive the motor windings. The DRV8802-Q1 device can supply up to 1.6-A peak or 1.1-A RMS output current (with proper heatsinking at 24 V and 25℃) per H-bridge.

A simple parallel digital control interface is compatible with industry-standard devices. Decay mode is programmable to allow braking or coasting of the motor when disabled.Internal shutdown functions are provided for over current protection, short circuit protection, under voltage lockout and overtemperature. The DRV8802-Q1 device is available in a 28-pin HTSSOP package with PowerPAD (Eco-friendly: RoHS & no Sb/Br).

DRV8802-Q1主要特性:

Qualified for Automotive Applications

AEC-Q100 Qualified With the Following Results

Device Temperature Grade 1: –40℃ to 125℃ Ambient Operating Temperature

Device HBM ESD Classification Level 2

Device CDM ESD Classification Level C4B

Dual H-Bridge Current-Control Motor Driver

Drives Two DC Motors

Brake Mode

Two-Bit Winding Current Control Allows Up to 4 Current Levels

Low MOSFET On-Resistance

1.6-A Maximum Drive Current at 24 V, 25℃

Built-In 3.3-V Reference Output

Industry Standard Parallel Digital Control Interface

8-V to 45-V Operating Supply Voltage Range

Thermally Enhanced Surface Mount Package

DRV8802-Q1應用:

? Automotive HVAC

? Automotive Valves

? Automotive Infotainment

圖1.DRV8802-Q1功能框圖

圖2.DRV8802-Q1應用電路圖

參考設計TIDA-01357

The TIDA-01357 TI Design offers a solution for DCmotors by using the DRV8802-Q1 device to controlautomotive HVAC flap actuators or dampers. Thisdesign demonstrates a cost-effective motor driversolution for six flap actuator where all six motors canbe driven simultaneously with an output current up to0.4 A per motor. This reference design maintains asmall solution size and low quiescent current inaddition to offering reverse battery and load dumpprotection, all of which are highlighted in this guide.brushed-DC motors or stepper motors. This TI Design offers a solution for DC-motor-based flap actuators.

The end goal is to develop a cost-effective motor driver solution for six-flap actuators that can be drivensimultaneously. This design includes protection features against load dump conditions and reverse batteryconditions and maintains a small solution size and low quiescent current at the same time.

The TIDA-01357 has been designed with a focus on the following points:

? Simultaneously driving six brushed-DC motors for a flap actuator

? Capability to survive reverse battery and load dump conditions (12-V system)

? Low quiescent current

? Compact design and high performance

? Use of a diagnostics feature (output short detect)

參考設計TIDA-01357主要特性:

? Survives Voltages up to 45 V

? Withstands Reverse Battery Conditions and LoadDump Conditions (12-V System)

? Three-Chip Solution to Drive up to Six MotorsSimultaneously (Two DC Motors per IC)

? Compact Layout; Does Not Require External FETs

? Low Quiescent Current

? Components Selected for Automotive Temperatureand Quality

參考設計TIDA-01357應用:

? Automotive HVAC Flap Actuator and DamperMotor Drive

? Automotive HVAC Intake Air-Flap Motor Drive

參考設計TIDA-01357電特性:

圖3.參考設計TIDA-01357框圖

圖4. LaunchPad?可發板和TIDA-01357外形圖

圖5.參考設計TIDA-01357電路圖(1)

圖6.參考設計TIDA-01357電路圖(2)

參考設計TIDA-01357材料清單:

圖7.參考設計TIDA-01357 PCB合成圖.左:頂層元件布局;右:頂層走線布局

圖8.參考設計TIDA-01357 PCB合成圖:底層走線布局

圖9.參考設計TIDA-01357 PCB設計圖(1)

圖10.參考設計TIDA-01357 PCB設計圖(2)

圖11.參考設計TIDA-01357 PCB設計圖(3)

圖12.參考設計TIDA-01357 PCB設計圖(4)

圖13.參考設計TIDA-01357 PCB設計圖(5)

圖14.參考設計TIDA-01357 PCB設計圖(6)

圖15.參考設計TIDA-01357 PCB設計圖(7)

圖16.參考設計TIDA-01357 PCB設計圖(8):外形尺寸