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
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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
データシート
 

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

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機能一覧

他の製品と比較 ブラシ付き DC モーター・ドライバ メール Excelへダウンロード
Part number オーダー・オプション Number of full bridges Vs (Min) (V) Vs (Max) (V) Peak output current (A) RDS(ON) (HS + LS) (mOhms) Control mode Control interface Features Package size: mm2:W x L (PKG) Approx. price (US$) Rating
DRV8432 ご注文 2     10.8     50     6     220     Independent 1/2-H
PWM    
Hardware (GPIO)     Current Regulation     36HSSOP: 226 mm2: 14.2 x 15.9 (HSSOP | 36)     5.50 | 1ku     Catalog    
DRV8412 ご注文 2     10.8     50     6     220     Independent 1/2-H
PWM    
Hardware (GPIO)     Current Regulation     44HTSSOP: 85 mm2: 6.1 x 14 (HTSSOP | 44)     3.35 | 1ku     Catalog