TI 公司的DRV8412/22/32是集成了先进掩护系统的高性能双路全桥马达驱动器,功率级的效率高告竣协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一连模式, DRV8422双路全桥模式2x5A或并联10A一连模式, DRV8432双路全桥模式2x7A或并联14A一连模式,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,呆板人和触感力控制系统,细密仪表和TEC驱动器.本京电港论坛文章先容DRV8412/22/32主要特点, 系统方框架图, 简化应用电路原理图纸, 全桥模式和并行全桥模式工作的应用框架图, 步进马达工作的应用框架图, 三相PMSM GND传感模式工作的应用框架图以及TEC驱动器的应用框架图. 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 these 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 12 V for GVDD and VDD, and another up to 50 V for PVDD. The DRV8412/22/32 can operate at up 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主要特点: High-Efficiency Power Stage (up to 97%) with Low RDS(on) MOSFETs (80 m at 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 Output 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 500 kHz Integrated Self-Protection Circuits Including Undervoltage, Overtemperature, Overload, and Short Circuit Programmable Cycle-by-Cycle Current Limit Protection Independent Supply and Ground Pins for Each Half Bridge Intelligent Gate Drive and Cross Conduction Prevention No External Snubber or Schottky Diode is Required DRV8412/22/32应用: Brushed DC and Stepper Motors Three Phase Permanent Magnet Synchronous Motors Robotic and Haptic Control System Actuators and Pumps Precision Instruments TEC Drivers
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