DRV8432 12A、2 チャネル、ブラシ付き DC または1 チャンネル、バイポーラー・ステッピング・モーター・ドライバ(PWM 制御) | TIJ.co.jp

DRV8432 (供給中)

12A、2 チャネル、ブラシ付き DC または1 チャンネル、バイポーラー・ステッピング・モーター・ドライバ(PWM 制御)

12A、2 チャネル、ブラシ付き DC または1 チャンネル、バイポーラー・ステッピング・モーター・ドライバ(PWM 制御) - DRV8432
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概要

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.

特長

  • 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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機能一覧 他の製品と比較 FET 内蔵ブラシ付き DC ドライバ

 
Vs (Min) (V)
Vs (Max) (V)
RMS Output Current (A)
Peak Output Current (A)
Number of Full Bridges
Control I/F
RDS(ON) (HS + LS) (mOhms)
Number of Half Bridges
Features
Rating
Operating Temperature Range (C)
Pin/Package
DRV8432 DRV8412
0     0    
52.5     52.5    
3     3    
6     6    
2     2    
Independent 1/2-H PWM     Independent 1/2-H PWM    
220     220    
4     4    
Outputs can be paralleled     Outputs can be paralleled    
Catalog     Catalog    
-40 to 85     -40 to 85    
36HSSOP     44HTSSOP    

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