DRV8434A-Q1

アクティブ

車載、電流センシング機能と停止検出機能内蔵、48V、2.5A バイポーラ ステッピング モーター ドライバ

製品詳細

Number of full bridges 2 Vs (min) (V) 4.5 Vs ABS (max) (V) 50 Full-scale current (A) 2.5 Peak output current (A) 4 RDS(ON) (HS + LS) (mΩ) 330 Sleep current (µA) 2 Control mode STEP/DIR Control interface Hardware (GPIO) Microstepping levels 256 Features Current Regulation, Integrated Current Sensing, Smart Tune, Stall Detection Rating Automotive Operating temperature range (°C) -40 to 125
Number of full bridges 2 Vs (min) (V) 4.5 Vs ABS (max) (V) 50 Full-scale current (A) 2.5 Peak output current (A) 4 RDS(ON) (HS + LS) (mΩ) 330 Sleep current (µA) 2 Control mode STEP/DIR Control interface Hardware (GPIO) Microstepping levels 256 Features Current Regulation, Integrated Current Sensing, Smart Tune, Stall Detection Rating Automotive Operating temperature range (°C) -40 to 125
VQFN (RGE) 24 16 mm² 4 x 4
  • AEC-Q100 Qualified for Automotive
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • PWM Microstepping Stepper Motor Driver
    • Simple STEP/DIR Interface
    • Up to 1/256 Microstepping Indexer
  • Integrated Current Sense Functionality
    • No Sense Resistors Required
    • ±4% Full-Scale Current Accuracy
  • Smart tune ripple control decay
  • Stall Detection using GPIO pins
  • 4.5 to 48V Operating Supply Voltage Range
  • Low RDS(ON): 330mΩ HS + LS at 24V, 25°C
  • High Current Capacity: 2.5A Full-Scale, 1.8A rms
  • Supports 1.8V, 3.3V, 5.0V Logic Inputs
  • Low-Current Sleep Mode (2 µA)
  • Spread spectrum clocking for low EMI
  • Small Package and Footprint
  • Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Charge Pump Undervoltage (CPUV)
    • Overcurrent Protection (OCP)
    • Sensorless stall detection
    • Open Load Detection (OL)
    • Thermal Shutdown (OTSD)
    • Fault Condition Output (nFAULT)
  • AEC-Q100 Qualified for Automotive
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • PWM Microstepping Stepper Motor Driver
    • Simple STEP/DIR Interface
    • Up to 1/256 Microstepping Indexer
  • Integrated Current Sense Functionality
    • No Sense Resistors Required
    • ±4% Full-Scale Current Accuracy
  • Smart tune ripple control decay
  • Stall Detection using GPIO pins
  • 4.5 to 48V Operating Supply Voltage Range
  • Low RDS(ON): 330mΩ HS + LS at 24V, 25°C
  • High Current Capacity: 2.5A Full-Scale, 1.8A rms
  • Supports 1.8V, 3.3V, 5.0V Logic Inputs
  • Low-Current Sleep Mode (2 µA)
  • Spread spectrum clocking for low EMI
  • Small Package and Footprint
  • Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Charge Pump Undervoltage (CPUV)
    • Overcurrent Protection (OCP)
    • Sensorless stall detection
    • Open Load Detection (OL)
    • Thermal Shutdown (OTSD)
    • Fault Condition Output (nFAULT)

The DRV8434-Q1 is a stepper motor driver for automotive applications. The device is fully integrated with two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing. The DRV8434-Q1 is capable of driving up to 2.5A full-scale output current (dependent on PCB thermal design).

The DRV8434-Q1 uses an internal current sense architecture to eliminate the need for two external power sense resistors, saving PCB area and system cost. The device uses an internal PWM current regulation scheme with smart tune ripple control decay. Smart tune automatically adjusts for optimal current regulation, compensates for motor variation and aging effects and reduces audible noise from the motor.

A simple STEP/DIR interface allows an external controller to manage the direction and step rate of the stepper motor. The device can be configured in full-step to 1/256 microstepping. A low-power sleep mode is provided using a dedicated nSLEEP pin.

The DRV8434-Q1 features advanced stall detection algorithm configurable by two digital IO and one analog IO pins, and does not require an SPI interface to detect stall. By detecting motor stall, system designers can identify if the motor was obstructed and take action as needed which can improve efficiency, prevent damage and reduce audible noise. Other protection features include supply undervoltage, charge pump faults, overcurrent, short circuits, open load, and overtemperature. Fault conditions are indicated by the nFAULT pin.

The DRV8434-Q1 is a stepper motor driver for automotive applications. The device is fully integrated with two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing. The DRV8434-Q1 is capable of driving up to 2.5A full-scale output current (dependent on PCB thermal design).

The DRV8434-Q1 uses an internal current sense architecture to eliminate the need for two external power sense resistors, saving PCB area and system cost. The device uses an internal PWM current regulation scheme with smart tune ripple control decay. Smart tune automatically adjusts for optimal current regulation, compensates for motor variation and aging effects and reduces audible noise from the motor.

A simple STEP/DIR interface allows an external controller to manage the direction and step rate of the stepper motor. The device can be configured in full-step to 1/256 microstepping. A low-power sleep mode is provided using a dedicated nSLEEP pin.

The DRV8434-Q1 features advanced stall detection algorithm configurable by two digital IO and one analog IO pins, and does not require an SPI interface to detect stall. By detecting motor stall, system designers can identify if the motor was obstructed and take action as needed which can improve efficiency, prevent damage and reduce audible noise. Other protection features include supply undervoltage, charge pump faults, overcurrent, short circuits, open load, and overtemperature. Fault conditions are indicated by the nFAULT pin.

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* データシート DRV8434A-Q1 Automotive Stepper Driver With Integrated Current Sense, 1/256 Microstepping, smart tune and Stall Detection using GPIO pins データシート PDF | HTML 2024年 8月 30日

設計および開発

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評価ボード

DRV8434AEVM — DRV8434A stepper drivers with analog stall detection evaluation module

DRV8434A 評価基板 (EVM) を使用すると、DRV8434A デバイスを容易に評価できます。

DRV8434A デバイスは、バイポーラ・ステッパ・モーター向けの統合型モーター・ドライバ・ソリューションです。このデバイスは、2 個の N チャネル・パワー MOSFET H ブリッジ、統合型電流センスおよびレギュレーション回路、アナログ停止検出機能、マイクロステップ・インデクサを統合しています。DRV8434 デバイスへの電力供給は、4.5 ~ 48V の単一電源電圧で実施します。シンプルな STEP/DIR (...)

ユーザー ガイド: PDF
パッケージ ピン数 CAD シンボル、フットプリント、および 3D モデル
VQFN (RGE) 24 Ultra Librarian

購入と品質

記載されている情報:
  • RoHS
  • REACH
  • デバイスのマーキング
  • リード端子の仕上げ / ボールの原材料
  • MSL 定格 / ピーク リフロー
  • MTBF/FIT 推定値
  • 使用原材料
  • 認定試験結果
  • 継続的な信頼性モニタ試験結果
記載されている情報:
  • ファブの拠点
  • 組み立てを実施した拠点

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