DRV8848
- Dual H-Bridge Motor Driver
- Single/Dual Brushed DC
- Stepper
- 4 to 18V Operating Supply Voltage Range
-
Low ON-resistance: HS + LS = 900mΩ (Typical, 25°C)
- PWM Control Interface
- Optional Current Regulation With 20µs Fixed Off-Time
- High Output Current per H-Bridge
- 2A Maximum Driver Current at 12V and TA = 25°C
- Parallel Mode Available Capable of 4A Maximum Driver Current at 12V and TA = 25°C
- Low-Current 3µA Sleep Mode
- Thermally-Enhanced Surface Mount Package
- Protection Features
- VM Undervoltage Lockout (UVLO)
- Overcurrent Protection (OCP)
- Thermal Shutdown (TSD)
- Fault Condition Indication Pin (nFAULT)
The DRV8848 provides a dual H-bridge motor driver for home appliances and other mechatronic applications. The device can be used to drive one or two DC motors, a bipolar stepper motor, or other loads. A simple PWM interface allows easy interfacing with controller circuits.
The output block of each H-bridge driver consists of N-channel and P-channel power MOSFETs configured as full H-bridges to drive the motor windings. Each H-bridge includes circuitry to regulate the winding current using a fixed off-time chopping scheme. The DRV8848 is capable of driving up to 2A of current from each output or 4A of current in parallel mode (with proper heat sinking, at 12V and TA = 25°C).
A low-power sleep mode is provided, which shuts down internal circuitry to achieve very-low quiescent current draw. This sleep mode can be set using a dedicated nSLEEP pin.
Internal protection functions are provided for UVLO, OCP, short-circuit protection and overtemperature. Fault conditions are indicated by a nFAULT pin.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | DRV8848 Dual H-Bridge Motor Driver datasheet (Rev. B) | PDF | HTML | 2024/4/24 | ||
| 應用說明 | Best Practices for Board Layout of Motor Drivers (Rev. B) | PDF | HTML | 2021/10/14 | |||
| 應用說明 | Methods to Configure Current Regulation for Brushed and Stepper Motors (Rev. B) | PDF | HTML | 2021/1/19 | |||
| 技術文章 | Using smart relay drivers for smart meters, part 2 | PDF | HTML | 2018/12/10 | |||
| Application brief | Small Motors in Large Appliances | 2018/7/20 | ||||
| 應用說明 | PowerPAD™ Thermally Enhanced Package (Rev. H) | 2018/7/6 | ||||
| 應用說明 | Using a Motor Driver DRV8848 for Low-Power Isolated Full-Bridge DC-DC Conversion | 2017/11/13 | ||||
| Application brief | PowerPAD™ Made Easy (Rev. B) | 2004/5/12 |
設計與開發
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BOOST-DRV8848 — 採用 DRV8848 的雙有刷 DC 馬達 BoosterPack
BOOST-DRV8848 是基於 DRV8848 雙全橋馬達驅動器的 4-18V 有刷 DC 馬達驅動級。此設計包含驅動單刷或雙刷 DC 馬達所需的一切,並支援並聯模式以滿足更高的電流需求。BOOST-DRV8848 最適合想進一步了解有刷 DC 馬達驅動級設計的使用者。此套件的設計與所有 TI LaunchPad 皆相容,且遵循 LaunchPad 針腳配置標準,並為採用 MSP430G2553 的 MSP-EXP430G2 LaunchPad 提供主要軟體/韌體支援。
DRV8848EVM — DRV8848EVM 評估模組
DRV8848EVM(評估模組)做為簡單易用的評估套件,用於展示 TI 的有刷馬達驅動器 DRV8848。MSP430F2617 用於控制馬達速度和電流位準。 該 EVM 採用高性能、電源效率且符合成本效益的平台,可加快開發速度並縮短上市時間。
SLLC450 — DRV8848 Software
TIDA-00297 — 冰箱阻尼器與風扇馬達控制解決方案
冰箱通常會使用阻尼器來控制氣流,並使用風扇來提供循環。 雖然離散式解決方案已使用多年,但此參考設計採用整合式馬達驅動器,可提供簡易控制、高性能與完整保護功能。 DRV8848 驅動步進馬達阻尼器,而 DRV10983 則驅動 BLDC 風扇,並實現 180° 靜音換向。 BLDC 具有閉合迴路速度控制,使用 MSP430G2553 和 DRV8812 實現基於 PWM 的電源。 此設計使用單層 PCB。 BLDC 和步進控制範例程式碼於 MCU 韌體中提供。 DRV 裝置中整合了過電流、過熱和欠電壓保護。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 16 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。