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DRV8412图片
 产品型号:DRV8412
 库存:2000
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 详细介绍

DRV8412_6A 双路刷式直流或单路双极步

 

描述

 

The DRV841x2 are high-performance, integrated dual full-bridge motor driver 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%. This high efficiency enables the use of smaller power supplies and heatsinks, and the devices are good candidates for energy-efficient applications.

The DRV841x2 requires two power supplies, one at 12 V for GVDD and VDD, and another up to 50 V for PVDD. The DRV841x2 can operate at up to 500-kHz switching frequency while still maintaining precise control and high efficiency. The devices also have an innovative protection system safeguarding the device against a wide range of fault conditions that could damage the system. These safeguards are short-circuit protection, overcurrent protection, undervoltage protection, and two-stage thermal protection. The DRV841x2 has a current-limiting circuit that prevents device shutdown during load transients such as motor start-up. A programmable overcurrent detector allows adjustable current limit and protection level to meet different motor requirements.

The DRV841x2 has unique independent supply and ground pins for each half-bridge. These pins make it possible to provide current measurement through external shunt resistor and support multiple motors with different power supply voltage requirements.

 

特性

 

  • High-Efficiency Power Stage (up to 97%) With 
    Low RDS(on) MOSFETs (110 mΩ at TJ = 25°C)
  • Operating Supply Voltage up to 52 V
  • 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
  • APPLICATIONS
    • Brushed DC and Stepper Motors
    • Three-Phase Permanent Magnet Synchronous Motors
    • Robotic and Haptic Control System
    • Actuators and Pumps
    • Precision Instruments
    • TEC Drivers
    • LED Lighting Drivers

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