TIDRV8412高性能双路全桥马达驱动方案

1、TI DRV8412高性能双路全桥马达驱动方案TI 公司的DRV8412/22/32是集成了先进保护系统的高性能双路全桥马达驱动器,功率级的效率高达成协97%. DRV8412/22/32需要两个电源,12V用于GVDD和VDD,50V用于PVDD. DRV8412双路全桥模式2x3A或并联6A连续模式, DRV8422双路全桥模式2x5A或并联10A连续模式, DRV8432双路全桥模式2x7A或并联14A连续模式,PWM频率高达500kHz,主要用于无刷DC和步进马达,三相永磁同步马达,机器人和触感力控制系统,精密仪表和TEC驱动器.本文介绍DRV8412/22/32主要特性, 系统方框图

2、, 简化应用电路图, 全桥模式和并行全桥模式工作的应用框图, 步进马达工作的应用框图, 三相PMSM GND传感模式工作的应用框图以及TEC驱动器的应用框图.The DRV8412/22/32 are high performance, integrated dual full bridge motor drivers with an advanced protection system.Because of the low RDS(on)of the H-Bridge MOSFETs and intelligent gate drive design, the efficiency of t

3、hese motor drivers can be up to 97%, which enables the use of smaller power supplies and heatsinks, and are good candidates for energy efficient applications.The DRV8412/22/32 require two power supplies, one at 12V for GVDD and VDD, and another up to 50V for PVDD. The DRV8412/22/32 can operate at up

4、 to 500-kHz switching frequency while still maintain precise control and high efficiency. They also have an innovative protection system safeguarding the device against a wide range of fault conditions that could damage the system.DRV8412/22/32主要特性:High-Efficiency Power Stage (up to 97%) with Low RD

5、S(on)MOSFETs (80 mat TJ= 25)Operating Supply Voltage up to 50 V (70 V Absolute Maximum)DRV8412 (power pad down): up to 2 x 3 A Continuous Output Current (2 x 6 A Peak) in Dual Full Bridge Mode or 6 A Continuous Current in Parallel Mode (12 A Peak)DRV8422 (power pad up): up to 2 x 5 A Continuous Outp

6、ut Current ( 2 x 9 A Peak) in Dual Full Bridge Mode or 10 A Continuous Current in Parallel Mode (18 A Peak)DRV8432 (power pad up): up to 2 x 7 A Continuous Output Current ( 2 x 12 A Peak) in Dual Full Bridge Mode or 14 A Continuous Current in Parallel Mode (24 A Peak)PWM Operating Frequency up to 50

7、0 kHzIntegrated Self-Protection Circuits Including Undervoltage, Overtemperature, Overload, and Short CircuitProgrammable Cycle-by-Cycle Current Limit ProtectionIndependent Supply and Ground Pins for Each Half BridgeIntelligent Gate Drive and Cross Conduction PreventionNo External Snubber or Schottk

8、y Diode is RequiredDRV8412/22/32应用:Brushed DC and Stepper MotorsThree Phase Permanent Magnet Synchronous MotorsRobotic and Haptic Control SystemActuators and PumpsPrecision InstrumentsTEC Drivers图1.DRV8412/22/32系统方框图图2.DRV8412/22/32简化应用电路图图3.DRV8412/22/32全桥模式工作的应用框图图4.DRV8412/22/32并行全桥模式工作的应用框图图5.DRV8412/22/32步进马达工作的应用框图图6.DRV8412/22/32三相PMSM PVDD传感模式工作的应用框图图7.DRV8412/22/32三相PMSM GND传感模式工作的应用框图图8.DRV8412/22/32 TEC驱动器的应用框图AO-Electronics 傲壹电子 官