DRV8847PWPR - 18V 2A Dual H-Bridge Motor Driver | Texas Instruments
料号： DRV8847PWPR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.18 | $21.80 |
| 100 | $1.79 | $179.00 |
| 500 | $1.55 | $775.00 |
| 1,000 | $1.32 | $1,320.00 |
DRV8847PWPR 概述
An H-bridge motor driver is a type of brushed dc or stepper motor driver that uses four switching elements arranged in an H configuration to apply voltage to a motor winding in either polarity. The dual H-bridge architecture used in the DRV8847 sits within the broader motor driver hierarchy: motor driver -> H-bridge -> half-bridge -> power management IC -> semiconductor. Independent half-bridge control allows each of the four low-side and high-side FETs to be addressed separately, enabling advanced commutation schemes, current-mode regulation, and parallel MOSFET control when higher drive current is required.
Key differentiating specifications include a low 7.5-mA (typical) quiescent current, integrated current-sense with chopping regulation at 5 A peak per H-bridge, built-in 1.5-A continuous output current per H-bridge (with proper PCB thermal design), independent INx/ENx logic interface per half-bridge, automatic dead-time generation, and overtemperature/overcurrent/undervoltage protection. The integrated protection is proprietary to the DRV8847 and removes several discrete parts that a discrete H-bridge design would need.
Technically, the device uses N-channel power MOSFETs in each half-bridge with internal charge pump to drive the high-side gates, allowing 100% duty cycle operation. The internal current-shunt amplifier with external reference (VREF) supports both fixed off-time and PWM current chopping, enabling precise torque control in stepper or brushed-dc applications.
Typical applications include industrial automation (small stepper indexers, valve actuators, ePOS printers), home appliances (small pumps, fans, latches, dispenser valves), robotics and toys (low-voltage brushed dc gearmotors), and office equipment (paper feeders, scanners). The HTSSOP-16 PowerPAD provides a low thermal resistance path suitable for sustained 1.5 A per bridge operation when the exposed pad is soldered to a sufficient copper area.
Design consideration: at full-load conditions the DRV8847 dissipates substantial heat (estimated P_diss = (V_supply - V_motor) * I_load per H-bridge), so always follow the datasheet thermal layout guidance with PowerPAD soldered to at least 1 oz copper pour. For applications above 1.5 A continuous per bridge, derate the supply voltage or provide forced-air cooling.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替换替代料： DRV8847PWPR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： DRV8847PWPR （相同外形与封装尺寸） ——差异在于 Output Configuration.
快速对比工具——选择替代料号进行并排对比：
DRV8847PWP
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DRV8844PWPR
✅ 直接替换📋 参考替代料（不在目录中）
DRV8842PWPR
✅ 直接替换📋 参考替代料（不在目录中）
DRV8806PWPR
✅ 直接替换✓ 有现货
$3.2 / 个
查看数据手册 →DRV8847PWPR 最大额定值与电气特性
| Motor Driver Type | Dual H-Bridge, Brushed DC / Bipolar Stepper |
| Number of H-Bridges | 2 |
| 输出配置 | Half-Bridge (independent control) x 4 |
| Supply Voltage (Operating) | 0 V to 11 V |
| Supply Voltage (Absolute Max) | 18 V |
| Continuous Output Current per H-Bridge | 1.5 A (with proper PCB thermal design) |
| Peak Output Current per H-Bridge | 2 A |
| Current Regulation | Yes (internal PWM chopping with sense resistor) |
| Quiescent Current (Typical) | 7.5 mA |
| Logic Input Voltage | 1.8 V to 5.5 V |
| 工作温度范围 | -40 C to +125 C |
| 封装 | HTSSOP-16 (PWP) with PowerPAD |
| 安装类型 | Surface Mount |
| Protection Features | OCP, OVP, OTP, UVLO |
| RoHS 状态 | Compliant |
DRV8847PWPR 引脚配置
| 引脚 1 | VM — Motor power supply (0-11 V operating, 18 V absolute max) |
| 引脚 2 | OUT1A — H-bridge 1 output A |
| 引脚 3 | OUT1B — H-bridge 1 output B |
| 引脚 4 | GND — Ground |
| 引脚 5 | OUT2A — H-bridge 2 output A |
| 引脚 6 | OUT2B — H-bridge 2 output B |
| 引脚 7 | GND — Ground |
| 引脚 8 | nSLEEP — Active-low sleep mode input |
| 引脚 9 | nFAULT — Active-low fault output (open-drain) |
| 引脚 10 | IN2 — Logic input for H-bridge 2 |
| 引脚 11 | IN1 — Logic input for H-bridge 1 |
| 引脚 12 | VREF — Current regulation reference voltage |
| 引脚 13 | SNS — Current sense input (external sense resistor to GND) |
| 引脚 14 | EN2 — Enable input for H-bridge 2 |
| 引脚 15 | EN1 — Enable input for H-bridge 1 |
| 引脚 16 | VCC — Internal 5V LDO output (logic supply) |
| 引脚 17 | PowerPAD — Exposed thermal pad (must be soldered to PCB copper) |
典型应用
DRV8847PWPR 适用于 6 应用s: ePOS Printer Stepper Drive, Industrial Valve and Latch Actuators, Small Brushed DC Gearmotors in Robotics, Home Appliance Pumps and Fans, Office Equipment Paper Feeders, Battery-Powered Medical Pumps.
ePOS Printer Stepper Drive
The DRV8847PWPR is well suited to drive the bipolar stepper motor inside an electronic point-of-sale (ePOS) receipt printer's paper-feed mechanism. The dual H-bridge topology directly drives a single bipolar stepper using microstepping waveforms up to the 2 A peak rating, while integrated current-sense via the SNS amplifier enables constant-torque microstepping at the rated hold current without external sense amplifiers. Independent half-bridge control lets designers implement acceleration/deceleration ramps in firmware by changing the PWM frequency and current reference (VREF) in real time. With an 11 V operating supply, the part is ideal for printer rails powered from USB or 12 V adapters, and its HTSSOP-16 footprint keeps the BOM compact inside a sealed printer chassis.
推荐
Industrial Valve and Latch Actuators
In industrial process control and building management, the DRV8847PWPR can independently drive two solenoid valves, latches, or relay coils from its dual H-bridge outputs. Each half-bridge supports a peak current of 2 A and continuous 1.5 A per channel, which is more than sufficient for 12 V/24 V nominal industrial solenoid loads when powered from a step-down supply. The independent ENx inputs and VREF-adjustable current limit allow each actuator to be sequenced separately during system power-up, which is critical for safe valve control. Integrated OCP, OVP, OTP, and UVLO protection reduces the need for external TVS diodes and fuses, lowering total BOM cost in distributed control panels.
推荐
Small Brushed DC Gearmotors in Robotics
Robotic toys, hobby servos, and small educational robotics platforms commonly use two brushed DC gearmotors for differential drive, and the DRV8847PWPR drives both motors from a single 16-pin IC. With independent PWM inputs per H-bridge and a 1.5 A continuous per-channel rating, the DRV8847 can drive gearmotors in the 100-200 mA no-load to 1.2-1.5 A stall-current range typical of small robotics platforms. The 7.5 mA quiescent current preserves battery life, while the nSLEEP pin supports a low-power standby mode below 2 mA when the robot is idle. The HTSSOP-16 PowerPAD provides a compact footprint suitable for integration on a 2-layer hobby robotics PCB.
推荐
Home Appliance Pumps and Fans
White goods and small home appliances (coffee machines, dishwashers, ice makers, air purifiers) use 12 V brushed DC pumps and fans that need quiet PWM-based speed control. The DRV8847PWPR supports up to 18 V absolute maximum and accepts 1.8 V to 5.5 V logic, allowing direct interface with a 3.3 V microcontroller. The integrated current chopping at the user-set VREF reference enables closed-loop PWM speed regulation, while the dual outputs can drive one pump and one fan from a single IC. The HTSSOP-16 PowerPAD thermal performance supports sustained operation near 1.5 A per bridge when the appliance chassis provides a copper spreader.
推荐
Office Equipment Paper Feeders
Office printers, scanners, copiers, and document feeders often use multiple low-voltage DC motors to drive rollers, paper paths, and stapler mechanisms. The DRV8847PWPR can drive two such motors independently from a single chip, replacing discrete H-bridge designs. Independent half-bridge control allows different PWM frequencies per motor (quiet operation for one motor, fast response for the second), and the VREF-adjustable current limit protects against paper-jam stall events without external current-sense resistors. The HTSSOP-16 footprint is compatible with the office equipment controller board outline used across TI's DRV88xx family.
推荐
Battery-Powered Medical Pumps
Portable medical infusion pumps, nebulizers, and small diagnostic devices use low-voltage brushed DC pump motors with strict requirements on quiescent current, audible noise, and clean PWM control. The DRV8847PWPR's 7.5 mA typical quiescent current (and sub-2 mA sleep current via nSLEEP) preserves battery life, while the integrated current chopping produces clean torque control without audible PWM whine. Independent half-bridge control supports dual-pump designs (e.g., main and bypass pump in an infusion system) from a single HTSSOP-16 IC, reducing PCB area. Operating temperature of -40 C to +125 C supports the wide thermal range typical of portable medical enclosures.
推荐
推荐产品汇总
工程参考数据： DRV8847PWPR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | DRV8847PWP | DRV8844PWPR | DRV8842PWPR | DRV8806PWPR |
|---|---|---|---|---|---|
| Package | HTSSOP-16 (PWP) | HTSSOP-16 (PWP) - same | HTSSOP-16 (PWP) - same | HTSSOP-16 (PWP) - same | HTSSOP-16 (PWP) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Continuous Current per H-Bridge | 1.5 A | 1.5 A | 1.0 A | 1.0 A | 0.5 A |
| Peak Current per H-Bridge | 2 A | 2 A | 1.6 A | 1.5 A | 1.0 A |
| Operating Supply Voltage | 0 V to 11 V | 0 V to 11 V | 0 V to 11 V | 0 V to 11 V | 0 V to 11 V |
| Independent Half-Bridge Control | Yes | Yes | Yes | Limited | No |
| Current Regulation (VREF) | Yes (programmable) | Yes | Yes | Yes | Fixed |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +85 C |
关键差异点
- Higher continuous current with full feature set （对比 DRV8844PWPR)
- Enhanced independent half-bridge control （对比 DRV8842PWPR)
- Higher operating temperature range （对比 DRV8806PWPR)
设计说明
Estimated: at VM=11 V, motor stall current 1.5 A per bridge (both bridges active), power dissipation reaches roughly (VM - V_motor) * I = 5 V * 1.5 A = 7.5 W per bridge. The HTSSOP-16 PowerPAD thermal resistance to a 1 oz copper 4-layer board is approximately 30-40 C/W, yielding ~225-300 C junction rise above ambient if both bridges are at full stall. Always solder the exposed PowerPAD to a continuous copper pour of at least 1 square inch of 1 oz copper, or derate VM to limit inrush heating.
Place bulk VM decoupling (>=10 uF low-ESR ceramic in parallel with 47-100 uF electrolytic) as close as possible to the VM and GND pins to absorb motor back-EMF. Place the external current-sense resistor on SNS with Kelvin routing back to GND to avoid ground-bounce noise corrupting the current-sense amplifier. Keep analog logic traces (VREF, nFAULT) away from motor switching traces to minimize coupling.
Do not operate VM above 18 V absolute maximum - even brief transients from motor back-EMF can exceed this and destroy the part. Add a TVS diode or schottky across VM to GND if inductive kick-back is possible. The nSLEEP pin must be driven high for normal operation; leaving it floating may cause unpredictable startup. The PowerPAD must be soldered; dry-solder or no-solder of the PowerPAD will trigger thermal shutdown at moderate loads.
Route motor outputs (OUT1A, OUT1B, OUT2A, OUT2B) with wide traces or copper pours to support peak 2 A per bridge. Use a star-ground topology with the DRV8847 GND pins and the bulk-capacitor GND returning to a single point to minimize ground bounce. Keep high-side gate-drive charge-pump traces short and avoid placing noisy switching nodes near sensitive analog inputs (VREF, SNS).
合规信息
RoHS and REACH compliance status derived from TI product page. AEC-Q100 grade is not listed; for AEC-Q100 qualified motor drivers in HTSSOP-16, consider the DRV8847-Q1 automotive variant if available. Halogen-free status not explicitly stated in the verified web data.
