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步進馬達驅動器

DRV8849

現行

具智慧調諧及整合式電流感測的 38-V 1.5-A 雙全橋步進馬達驅動器

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產品規格表

DRV8849

現行
產品規格表 立即訂購

產品詳細資料

Number of full bridges 4 Vs (min) (V) 4.5 Vs ABS (max) (V) 40 Full-scale current (A) 1.5 Peak output current (A) 2.5 RDS(ON) (HS + LS) (mΩ) 900 Sleep current (µA) 2 Control mode STEP/DIR Control interface Hardware (GPIO) Microstepping levels 256 Features Current Regulation, Integrated Current Sensing, Low-Power Sleep Mode, Smart Tune Rating Catalog Operating temperature range (°C) -40 to 125
Number of full bridges 4 Vs (min) (V) 4.5 Vs ABS (max) (V) 40 Full-scale current (A) 1.5 Peak output current (A) 2.5 RDS(ON) (HS + LS) (mΩ) 900 Sleep current (µA) 2 Control mode STEP/DIR Control interface Hardware (GPIO) Microstepping levels 256 Features Current Regulation, Integrated Current Sensing, Low-Power Sleep Mode, Smart Tune Rating Catalog Operating temperature range (°C) -40 to 125
VQFN (RHH) 36 36 mm² 6 x 6
  • Dual stepper motor driver
    • STEP/DIR interface
    • Up to 1/256 microstepping indexer
  • 4.5 to 38-V Operating supply voltage range
  • 900 mΩ HS + LS RDS(ON) at 24 V, 25°C
  • 1.5 A full-scale, 1.1 A rms current per H-bridge
  • Integrated current sense functionality
    • ±5% full-scale current accuracy
    • No sense resistors required
  • Smart tune decay technology
  • Configurable off-time PWM chopping in Smart tune
    • 8-µs, 16-µs, or 32-µs
  • Supports 3.3-V, 5.0-V logic inputs
  • Low-current sleep mode (1.3 µA)
  • Protection features for each Stepper
    • VM undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
    • Thermal shutdown (OTSD)
    • Fault condition output (nFAULT)
  • Dual stepper motor driver
    • STEP/DIR interface
    • Up to 1/256 microstepping indexer
  • 4.5 to 38-V Operating supply voltage range
  • 900 mΩ HS + LS RDS(ON) at 24 V, 25°C
  • 1.5 A full-scale, 1.1 A rms current per H-bridge
  • Integrated current sense functionality
    • ±5% full-scale current accuracy
    • No sense resistors required
  • Smart tune decay technology
  • Configurable off-time PWM chopping in Smart tune
    • 8-µs, 16-µs, or 32-µs
  • Supports 3.3-V, 5.0-V logic inputs
  • Low-current sleep mode (1.3 µA)
  • Protection features for each Stepper
    • VM undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
    • Thermal shutdown (OTSD)
    • Fault condition output (nFAULT)

The DRV8849 is a dual stepper motor driver for industrial and consumer applications. The device is fully integrated with four N-channel power MOSFET H-bridge drivers, one microstepping indexer for each stepper, and integrated current sensing. The DRV8849 is capable of driving up to 1.5-A full-scale output current (dependent on PCB design).

The DRV8849 uses an internal current sense architecture to eliminate the need for four external power sense resistors, saving PCB area and system cost. The device uses an internal PWM current regulation scheme with smart tune decay mode. Smart tune automatically adjusts for desired current regulation, compensates for motor variation and aging effects and reduces audible noise and vibration from the motor.

Simple STEP/DIR interfaces allow an external controller to manage the direction and step rate of the stepper motors. The device can be configured in full-step to 1/256 microstepping. A low-power sleep mode is provided using a dedicated nSLEEP pin. Protection features are provided for supply undervoltage, charge pump faults, overcurrent, short circuits, and overtemperature. Fault conditions are indicated by one nFAULT pin for each stepper.

The DRV8849 is a dual stepper motor driver for industrial and consumer applications. The device is fully integrated with four N-channel power MOSFET H-bridge drivers, one microstepping indexer for each stepper, and integrated current sensing. The DRV8849 is capable of driving up to 1.5-A full-scale output current (dependent on PCB design).

The DRV8849 uses an internal current sense architecture to eliminate the need for four external power sense resistors, saving PCB area and system cost. The device uses an internal PWM current regulation scheme with smart tune decay mode. Smart tune automatically adjusts for desired current regulation, compensates for motor variation and aging effects and reduces audible noise and vibration from the motor.

Simple STEP/DIR interfaces allow an external controller to manage the direction and step rate of the stepper motors. The device can be configured in full-step to 1/256 microstepping. A low-power sleep mode is provided using a dedicated nSLEEP pin. Protection features are provided for supply undervoltage, charge pump faults, overcurrent, short circuits, and overtemperature. Fault conditions are indicated by one nFAULT pin for each stepper.
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類型 標題 日期
* Data sheet DRV8849: 38 V, 1.5 A Dual Stepper Driver with Integrated Current Sense, 1/256 Microstepping, STEP/DIR Interface and Smart Tune datasheet (Rev. A) PDF | HTML 2023年 7月 13日
Product overview Brushed and Stepper Motor Drivers in Video Surveillance PDF | HTML 2024年 2月 22日
Product overview Two New Dual-Stepper Motor Drivers PDF | HTML 2024年 2月 22日
Certificate DRV8849EVM EU RoHS Declaration of Conformity (DoC) 2023年 3月 28日

設計與開發

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開發板

DRV8849EVM — 適用於具有智慧調諧及整合式電流感測功能的雙步進馬達驅動器的 DRV8849 評估模組

DRV8849 是適合工業與消費者應用的雙步進馬達驅動器。此裝置完全整合四個 N 通道電源 MOSFET 全橋驅動器，各步進及整合式電流感測各使用一個微型步進索引器。DRV8849 能夠驅動最高 1.5-A 的電流 (受電路板設計限制)。DRV8849 使用 STEP/DIR 介面來控制步進馬達的方向和步進率。為電源欠電壓、充電幫浦故障、過電流、短路及過熱提供防護功能。
使用指南: PDF | HTML
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