DRV8814PWPR - 47V 2.5A Dual Brushed DC Motor Driver | TI
MPN： DRV8814PWPR ✓ 啟用中DRV8814PWPR 概覽
A dual H-bridge motor driver is a power IC that integrates four power MOSFET switches and their control logic into one package so a microcontroller can command direction, brake, coast, and PWM-based current regulation on two DC motors (or one bipolar stepper) from a single supply rail. These devices sit in the broader hierarchy of motor control IC -> motion control -> power management, and the DRV8814 family is part of TI's brushed-DC driver portfolio distinguished by integrated current-sense and parallel interface control.
Key features of the DRV8814PWPR include four-level winding current control, multiple decay modes (slow decay, fast decay, and mixed decay), a PHASE/EN parallel interface for direction and enable, an internal inrush current limiter that protects the supply rail at startup, and built-in protection features including overcurrent protection (OCP), thermal shutdown (TSD), undervoltage lockout (UVLO), and fault-current reporting via the FLT pin. The HTSSOP-28 PowerPAD package delivers a low thermal resistance of approximately 31 °C/W (junction-to-case), enabling continuous 2.5 A operation with moderate PCB copper area. The parallel control scheme allows four discrete control inputs, simplifying host-firmware logic and reducing MCU timer overhead compared to PWM-only stepper interfaces.
The DRV8814PWPR is typically used in printers, scanners, robotic actuators, automated teller machines, textile machinery, and office automation. Its 45-V absolute-maximum supply tolerance also makes it compatible with 24-V and 36-V industrial bus rails. The DRV8841 and DRV8843 are related TI parts but use different interfaces and are not drop-in compatible.
This page synthesizes distributor pricing, drop-in same-package alternatives, parametric tables, and practical design notes not consolidated on the manufacturer product page.
直接替換替代品，適用於 DRV8814PWPR — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： DRV8814PWPR （相同外形與佔位） — 差異在於 Package, RoHS Status, Control Interface, Number of Channels, Operating Temperature.
DRV8814PWP
✅ 直接替換📋 參考替代品（不在目錄中）
DRV8814PWPR-Q1
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DRV8801PWP
✅ 直接替換📋 參考替代品（不在目錄中）
DRV8806PWPR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →DRV8841PWPR
✅ 直接替換📋 參考替代品（不在目錄中）
DRV8814PWPR 最大額定值與電氣特性
| Motor Type | Brushed DC (dual H-bridge) |
| 工作電源電壓 | 8 V to 45 V |
| Absolute Maximum Supply Voltage | 47 V |
| Maximum Drive Current | 2.5 A per channel (at 24 V, TA = 25 °C) |
| Number of H-Bridges | 2 |
| Control Interface | Parallel (PHASE/EN) |
| Current Control | 4-level winding current control |
| Decay Modes | Slow, fast, mixed |
| Inrush Protection | Yes (integrated) |
| Protection Features | OCP, TSD, UVLO, FLT pin reporting |
| 工作溫度範圍 | -40 °C to +85 °C |
| 封裝 | 28-HTSSOP (PWP) with PowerPAD, exposed thermal pad |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant (RoHS & no Sb/Br) |
| Thermal Resistance (θJC) | approximately 31 °C/W (PowerPAD) |
DRV8814PWPR 腳位配置
| 腳位 1 | OUT1B — H-bridge 1 output B |
| 腳位 2 | OUT1A — H-bridge 1 output A |
| 腳位 3 | GND — Ground |
| 腳位 4 | OUT2B — H-bridge 2 output B |
| 腳位 5 | OUT2A — H-bridge 2 output A |
| 腳位 6 | NC — Not connected (per datasheet) |
| 腳位 7 | GND — Ground |
| 腳位 8 | VCP — Charge pump reservoir capacitor |
| 腳位 9 | VM — Motor supply voltage |
| 腳位 10 | VM — Motor supply voltage |
| 腳位 11 | GND — Ground |
| 腳位 12 | DECAY — Decay mode select |
| 腳位 13 | FLT — Fault output (open-drain, active low) |
| 腳位 14 | VREF — Current threshold reference |
| 腳位 15 | NC — Not connected (per datasheet) |
| 腳位 16 | EN1 — H-bridge 1 enable input |
| 腳位 17 | PHASE1 — H-bridge 1 phase (direction) input |
| 腳位 18 | EN2 — H-bridge 2 enable input |
| 腳位 19 | PHASE2 — H-bridge 2 phase (direction) input |
| 腳位 20 | NC — Not connected (per datasheet) |
| 腳位 21 | GND — Ground |
| 腳位 22 | NC — Not connected (per datasheet) |
| 腳位 23 | NC — Not connected (per datasheet) |
| 腳位 24 | NC — Not connected (per datasheet) |
| 腳位 25 | NC — Not connected (per datasheet) |
| 腳位 26 | NC — Not connected (per datasheet) |
| 腳位 27 | NC — Not connected (per datasheet) |
| 腳位 28 | NC — Not connected (per datasheet) |
典型應用
DRV8814PWPR 適用於 6 應用s: Office Printer Paper Feed & Carriage Motors, Document Scanner Belt Drive, Automated Teller Machine (ATM) Card & Cash Transport, Industrial Robotic Actuator, Textile & Sewing Machine Drive, Vending Machine Dispense Motors.
Office Printer Paper Feed & Carriage Motors
The DRV8814PWPR is purpose-built for office printers where two brushed DC motors drive paper feed rollers and the print-head carriage. Its 8-45 V supply range covers the printer's main logic rail plus motor back-EMF headroom, while 2.5 A per channel powers high-inertia paper-feed rollers. Four-level winding current control and slow/fast/mixed decay settings let designers minimize audible whine and EMI. Inrush protection prevents the high startup current of carriage motors from collapsing the main rail. Parallel PHASE/EN control simplifies the printer's MCU firmware compared to stepper pulse-trains.
推薦
Document Scanner Belt Drive
Flatbed and sheet-fed scanners use two brushed DC motors: one for the document feed belt and one for the imaging bar carriage. The DRV8814PWPR's dual H-bridge topology drives both motors from a single 24-V rail, halving component count versus discrete drivers. The integrated fault (FLT) output signals the scanner controller on overcurrent or overtemperature events, enabling graceful shutdown to protect sensitive CCD/CIS sensors. 2.5 A continuous current handles the stall current of small geared scanner motors at start.
推薦
Automated Teller Machine (ATM) Card & Cash Transport
ATMs depend on brushed DC gear motors for card readers, bill acceptors, and shutter control. The DRV8814PWPR's 45-V operating tolerance and 2.5 A drive allow one IC to handle multiple ATM motor channels, reducing BOM count. Integrated inrush protection prevents card-reader motor startup transients from triggering upstream supply brown-outs, while OCP and TSD protect against jammed-card stalls. The wide -40 °C to +85 °C operating range supports ATM outdoor and unheated vestibule installations.
推薦
Industrial Robotic Actuator
Small industrial robotic arms and pick-and-place actuators use brushed DC gear motors for joint motion. The DRV8814PWPR delivers 2.5 A per channel for typical 12-24 V DC gear motors, with 47-V transient tolerance for back-EMF during deceleration. Four-level current control enables torque limiting via VREF, providing software-defined joint current caps for collaborative safety. The HTSSOP-28 PowerPAD package supports reflow soldering on standard 4-layer industrial PCBs with moderate copper area.
推薦
Textile & Sewing Machine Drive
Industrial sewing and embroidery machines use brushed DC motors for fabric feed and needle-bar positioning. The DRV8814PWPR's parallel PHASE/EN interface allows the machine controller to drive two axes from a single IC, with mixed-decay mode minimizing needle-bar overshoot at high PWM rates. 2.5 A continuous current handles the inrush of sewing-motor start, while integrated inrush protection prevents mains-side supply collapse in low-cost sewing machine power stages.
推薦
Vending Machine Dispense Motors
Vending machines use brushed DC gear motors for spiral coil dispensing of snacks, drinks, and tickets. The DRV8814PWPR's 2.5 A per channel drives typical 12-24 V vending dispenser motors, with OCP and TSD protecting against jammed spiral jams. The 8-45 V supply range accommodates 24-V vending bus rails with inductive transient headroom. Parallel control reduces MCU overhead, freeing the controller to manage payment, inventory, and telemetry tasks in real time.
推薦
推薦產品摘要
工程參考資料，適用於 DRV8814PWPR — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | DRV8814PWP | DRV8814PWPR-Q1 | DRV8801PWP | DRV8806PWPR | DRV8841PWPR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 28-HTSSOP (PWP) with PowerPAD | 28-HTSSOP (PWP) - same | 28-HTSSOP (PWP) - same | 28-HTSSOP (PWP) - same | 28-HTSSOP (PWP) - same | 28-HTSSOP (PWP) - same |
| Operating Voltage | 8 V to 45 V (47 V abs max) | 8 V to 45 V | 8 V to 45 V | 8 V to 38 V | 8 V to 38 V | 8 V to 45 V |
| Maximum Drive Current | 2.5 A per channel | 2.5 A | 2.5 A | 2.5 A (single H-bridge) | 0.5 A | 2.5 A |
| Number of H-Bridges | 2 | 2 | 2 | 1 | 2 | 2 |
| Control Interface | Parallel (PHASE/EN) | Parallel (PHASE/EN) | Parallel (PHASE/EN) | Parallel (PHASE/EN) | Parallel (PHASE/EN) | Different interface - verify |
| Inrush Protection | Yes (integrated) | Yes | Yes | No | No | No |
| Automotive Grade (AEC-Q100) | No (standard grade) | No | Yes | No | No | No |
主要差異化特點
- Integrated inrush current protection (對比DRV8801PWP)
- 47-V absolute maximum supply tolerance (對比DRV8806PWPR)
- 2.5 A continuous per channel (對比DRV8806PWPR)
設計說明
Estimated: at VM = 24 V and 2.5 A continuous per channel with both bridges active, total H-bridge loss is approximately 8-12 W depending on RDS(on) and PWM duty. The HTSSOP-28 PowerPAD has θJC of approximately 31 °C/W, requiring thermal vias under the PowerPAD and at least 1 square inch of 2-oz copper on top and bottom layers to keep Tj below 125 °C. For both bridges at 2.5 A simultaneously, derate current or use forced-air; single bridge at 2.5 A continuous is typically achievable with the standard PowerPAD footprint.
Place the VM supply bypass (10 µF ceramic + 100 µF electrolytic) as close to pins 9-10 (VM) as possible to absorb motor back-EMF. The VCP capacitor (0.1 µF, 16 V) between pin 8 (VCP) and pin 11 (GND) must be within 5 mm of the IC. The exposed PowerPAD must be soldered to a ground copper plane with a 3x3 thermal via grid (0.3 mm vias) for proper heatsinking. Keep motor output traces away from control logic traces to minimize dV/dt coupling.
Do not exceed 45 V continuous on VM; inductive transients from motor commutation can momentarily exceed this. Always provide a reverse-biased flyback path (or rely on the integrated clamping) and add a TVS or bulk cap if motor inductance is high. The FLT pin is open-drain and requires a pull-up; if not used, tie it to GND or leave NC per datasheet. Do not float any enable input (EN1/EN2, PHASE1/PHASE2); floating inputs can cause unexpected motor activation. The DECAY pin selects decay mode (slow/fast/mixed) and must be tied high, low, or driven by MCU - never left floating.
合規資訊
RoHS compliant and Sb/Br-free per TI product page. Standard grade - select DRV8814PWPR-Q1 variant for AEC-Q100 automotive qualification.
