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TI 公司的DRV8412是具有先进掩护系统的高性能全双桥马达驱动器，它的功率级效率到达97%，工作电压高达50V，最大为70V ，一连驱动电流高达2x3A，PWM工作频率高达500kHz，主要用在无刷DC和步进马达，三相永磁同步马达，细密仪表，呆板人控制系统和TEC驱动器。本京电港论坛文章先容了DRV8412主要特点，方框架图，多种工作模式的应用案例框架图，DRV8412应用电路原理图纸和DRV8412EVM马达驱动评估板主要特点，电路原理图纸和质料费清单（BOM）。 The DRV8412/32 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 DRV8412/32 require two power supplies, one at 12 V for GVDD and VDD, and another up to 50 V for PVDD. The DRV8412/32 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主要特点： High-Efficiency Power Stage (up to 97%) with Low RDS(on) MOSFETs (80 m Operating Supply Voltage up to 50 V (70 V Absolute Maximum) DRV8412 (power pad down): up to 2 × 3 A Continuous Output Current (2 × 6 A Peak) in Dual Full Bridge Mode or 6 A Continuous Current in Parallel Mode (12 A Peak) DRV8432 (power pad up): up to 2 × 7 A Continuous Output Current ( 2 × 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应用： Three Phase Permanent Magnet Synchronous Motors Robotic and Haptic Control System Actuators and Pumps Precision Instruments TEC Drivers DRV8412EVM马达驱动评估板 DRV8412EVM Motor Drive Evaluation Board The DRV8412EVM can be operated with either two full bridge outputs or 4 half bridge outputs. It can also be used in parallel mode to double the current capability. The unit can be operated with external PWM inputs using a MCU controller module or signal generator, etc. The outputs and power supplies can be connected using stripped wires by connecting them to the on-board terminal blocks. The EVM module also has hardware switches to control the modes and to allow a manual reset. DRV8412EVM主要特点： • PWM input motor driver module • Self-contained protection system (short-circuit and thermal) • Double-side, plated-through PCB线路板 layout |
at TJ = 25℃) 
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