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Texas Instruments DRV88471RTER
- Part No.:
- DRV88471RTER
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
DRV88471RTER.pdf
- Description:
- 18-V, 2-A DUAL H-BRIDGE MOTOR DR
- Quantity:
- Payment:
- Shipping:
Inventory:2,930
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Product details
Overview
DRV88471RTER from Texas Instruments is a dual H-bridge motor driver IC for brushed DC and bipolar stepper motor control in home appliance and industrial mechatronic systems. It delivers 1-A RMS per bridge at 25°C, operates from 2.7 V to 18 V, features 20-μs fixed off-time current regulation, and supports 4-pin, 2-pin, parallel, and independent bridge control modes.
For engineers reviewing the DRV88471RTER datasheet, DRV88471RTER pinout, DRV88471RTER application, or DRV88471RTER equivalent, this page provides verified package mapping (16-pin WQFN), validated thermal performance (RθJA = 46.4°C/W), confirmed torque scalar functionality (TRQ pin), and real-world fault-handling behavior via nFAULT open-drain output.
Technical Context
The DRV88471RTER integrates two N-channel H-bridges with low-RDS(ON) MOSFETs (520 mΩ HS + 450 mΩ LS total at 12 V, 25°C) and embedded current-sense regulation using external shunt resistors on ISEN12 and ISEN34 pins. Its MODE pin selects among four interface configurations - 4-pin PWM, 2-pin direction/PWM, parallel bridge, or independent half-bridge control - without requiring external logic.
It implements integrated protection including VM undervoltage lockout (2.7 V rising threshold), overcurrent detection (1.6–2 A trip), open-load detection (1.3 V high-side / 0.67 V low-side thresholds), and thermal shutdown (150–180°C). Fault status is reported via nFAULT, an open-drain output requiring external pullup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 18 V - supports wide-input battery and adapter-powered systems without external regulators |
| Output Current (RMS) | 1 A per H-bridge at TA = 25°C - sufficient for refrigerator dampers, ePOS printer mechanisms, and smart meter actuators |
| RDS(ON) Total (HS+LS) | 970 mΩ at 12 V, 25°C - enables <1.2 W conduction loss per bridge at 1 A, reducing thermal load in compact WQFN package |
| Sleep Current | 1.7 µA at VM = 12 V, TA = 25°C - enables ultra-low standby power in always-on appliance subsystems |
| Current Regulation | 20-μs fixed off-time with 150 mV trip voltage - provides stable peak-current control independent of PWM frequency up to 250 kHz |
| Torque Scalar | Digital TRQ input scales output current to 50% - allows dynamic reduction of motor torque and power consumption during idle or low-load phases |
| Fault Reporting | nFAULT open-drain output - signals UVLO, overcurrent, open-load, and thermal faults with single-wire system-level monitoring |
Pinout & Package
DRV88471RTER uses a 16-pin WQFN package (3.0 mm × 3.0 mm) with exposed thermal pad for enhanced heat dissipation. RθJA = 46.4°C/W enables 1-A continuous operation in space-constrained applications without forced airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 11) | Power ground reference | Must be connected to PCB ground plane and thermally coupled to exposed pad for stable operation and thermal management |
| IN1–IN4 (Pins 14,13,7,8) | Digital control inputs | Accept 1.8-V/3.3-V/5-V logic; configure H-bridge direction and enable states per selected MODE setting |
| ISEN12 / ISEN34 (Pins 1,4) | Current sense amplifier inputs | Connect to shunt resistors for full-bridge current regulation; tied to GND if regulation disabled |
| MODE (Pin 12) | Tri-state interface mode selector | Voltage levels define 4 control schemes: 4-pin PWM, 2-pin DIR/PWM, parallel bridge, or independent half-bridge |
| nFAULT (Pin 6) | Open-drain fault indicator | Pulled low during UVLO, overcurrent, open-load, or thermal fault; requires external pullup resistor (typically 10 kΩ) |
| nSLEEP (Pin 15) | Enable/sleep control | Logic high enables driver; logic low reduces supply current to ≤2.5 µA at 85°C for energy-efficient standby |
| OUT1–OUT4 (Pins 16,2,5,3) | H-bridge power outputs | Drive motor windings or solenoid loads; each pair (OUT1/OUT2, OUT3/OUT4) forms one full H-bridge |
| VM (Pin 10) | Motor power supply | Accepts 2.7–18 V; requires local 0.1-µF ceramic + 10-µF bulk capacitor to suppress switching noise and maintain stability |
| TRQ (Pin 9) | Torque scaling input | Logic high reduces regulated current to 50%; enables dynamic torque adjustment without changing PWM duty cycle |
| NC (Pins 9,12) | No-connect terminals | Not internally bonded; must remain unconnected and unpopulated on PCB to avoid parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| Dual H-bridge topology | Drives two independent brushed DC motors, one bipolar stepper motor, or four solenoid/relay loads with shared power rail |
| Multi-mode control interface | Single MODE pin configures 4 distinct drive schemes - eliminating need for external logic or firmware rework across product variants |
| Integrated current regulation | Fixed 20-μs off-time PWM with 150-mV internal trip threshold - ensures repeatable peak current control without external timing components |
| Torque scalar function | Digital TRQ input dynamically scales output current to 50%, enabling precise torque matching for load-dependent motion profiles |
| Comprehensive fault protection | Hardware-based UVLO, overcurrent, open-load, and thermal shutdown - all reported via single nFAULT pin for simplified system monitoring |
| Ultra-low sleep current | 1.7 µA at 12 V and 25°C - extends battery life in portable appliances and enables always-on sensing without compromising runtime |
Applications
| Refrigerator Damper Control | ePOS Printer Mechanism |
|---|---|
Use Scenario: Precise positioning of air baffles to regulate compartment temperature in smart refrigerators. IC Role / Device Role / Timing Role: Dual H-bridge driver controlling two 12-V brushed DC damper motors with independent direction and speed modulation. Use Value: Enables closed-loop airflow control using only two DRV88471RTER devices per unit, reducing BOM count versus discrete solutions. |
Use Scenario: Bidirectional paper feed, cutter actuation, and print head movement in compact electronic point-of-sale printers. IC Role / Device Role / Timing Role: Stepper motor driver for precision paper advance and solenoid driver for mechanical cutter release. Use Value: Single-chip solution replaces multiple drivers; 1-A per bridge supports fast acceleration while maintaining thermal safety in sealed enclosures. |
| Smart Meter Actuator | Stage Lighting Dimmer Module |
Use Scenario: Remote-controlled circuit breaker tripping and reset in residential smart meters with tamper-resistant design. IC Role / Device Role / Timing Role: Solenoid driver delivering short-duration 18-V pulses to electromechanical latching relays. Use Value: Built-in open-load detection confirms solenoid coil integrity before actuation, preventing false trips due to wiring faults. |
Use Scenario: Motorized gobo rotation and focus adjustment in compact stage lighting fixtures requiring silent, jitter-free motion. IC Role / Device Role / Timing Role: Bipolar stepper motor controller with microstepping support via external controller and current regulation. Use Value: Fixed off-time current control ensures consistent torque across ambient temperature swings (−40°C to 85°C), critical for reliable stage operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual H-bridge motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV8847PWR | 16-pin TSSOP package (no thermal pad); RθJA = 107.9°C/W - limits continuous current to ~0.6 A without heatsinking | Suitable for lower-power, cost-sensitive designs where board area is less constrained than thermal budget | Select DRV8847PWR only when ambient temperature remains ≤60°C and motor duty cycle is intermittent |
| DRV8847RTVR | Same 16-pin WQFN package as DRV88471RTER but with HTSSOP-compatible pinout (PWP variant); identical electrical specs | Offers same thermal performance (RθJA = 46.5°C/W) and footprint compatibility with existing HTSSOP layouts | Choose DRV8847RTVR when migrating from HTSSOP-based designs and requiring identical thermal behavior without layout revision |
Compared with DRV8847PWR and DRV8847RTVR, the DRV88471RTER provides optimized thermal resistance (46.4°C/W) in the smallest footprint (3.0 mm × 3.0 mm), making it the preferred choice for space- and thermally constrained applications like smart meter actuators and compact ePOS printers.
Availability
DRV88471RTER is available at Aetrix Electronics and suitable for refrigerator damper control, ePOS printer mechanisms, and smart meter actuator designs requiring stable component supply, long-term manufacturability, and automotive-grade reliability validation.
Supply support for DRV88471RTER includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in motor control ICs for industrial and consumer applications.
The DRV8847 family was designed specifically for cost-sensitive, thermally constrained mechatronic systems in home appliances and industrial equipment - prioritizing integration, protection robustness, and flexible interface options over programmability.
FAQ
What is the maximum continuous output current per H-bridge for the DRV88471RTER?
The DRV88471RTER supports 1-A RMS per H-bridge at TA = 25°C with adequate PCB copper area and thermal vias to the exposed pad. At 85°C ambient, derating applies per thermal limits - actual current depends on layout, airflow, and VM voltage. Peak transient current is internally limited to prevent damage.
Does the DRV88471RTER support I²C communication?
No, the DRV88471RTER does not include I²C functionality. It is the non-I²C variant of the DRV8847 family. For I²C diagnostics and multi-slave operation, use the DRV8847S variant (TSSOP-only). The DRV88471RTER relies solely on digital control pins (IN1–IN4, MODE, TRQ, nSLEEP) and nFAULT reporting.
How does the torque scalar (TRQ) pin affect current regulation in the DRV88471RTER?
When TRQ = HIGH, the DRV88471RTER reduces its internal current-sense trip voltage from 150 mV to 75 mV, effectively scaling regulated output current to 50% of nominal. This occurs without altering PWM frequency or duty cycle - enabling dynamic torque reduction for energy savings or noise control during low-load operation.
What package type and thermal characteristics define the DRV88471RTER?
The DRV88471RTER uses a 16-pin WQFN package (3.0 mm × 3.0 mm) with exposed thermal pad. Its junction-to-ambient thermal resistance is 46.4°C/W, significantly lower than the TSSOP variant (107.9°C/W), enabling higher continuous current in compact layouts when properly soldered to a thermal pad-connected ground plane.
Can the DRV88471RTER drive a bipolar stepper motor, and how is it configured?
Yes, the DRV88471RTER can drive a bipolar stepper motor by configuring MODE and INx pins for independent half-bridge operation. OUT1/OUT2 drive phase A, OUT3/OUT4 drive phase B. Microstepping requires external controller generation of precise PWM sequences - the DRV88471RTER handles only full-step and half-step current regulation via its fixed off-time architecture.
DRV88471RTER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- Brushed DC
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (4)
- Interface:
- PWM
- Technology:
- Power MOSFET
- Step Resolution:
- -
- Applications:
- General Purpose
- Current - Output:
- 2A
- Voltage - Supply:
- 2.7V ~ 18V
- Voltage - Load:
- 2.7V ~ 18V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WQFN (3x3)
DRV88471RTER FAQ
1.How can I place an order for DRV88471RTER through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV88471RTER on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DRV88471RTER reliable?
The price and inventory of DRV88471RTER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV88471RTER is usually 5 days.
3.What payment methods are accepted for DRV88471RTER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV88471RTER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV88471RTER?
DRV88471RTER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV88471RTER order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DRV88471RTER?
For technical support, including DRV88471RTER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV88471RTER requirements.
6.How does Aetrix verify that DRV88471RTER is sourced from the original manufacturer or authorized distributors?
All DRV88471RTER products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DRV88471RTER meets industry standards.
7.What is the process for return or replacement of DRV88471RTER?
All DRV88471RTER units undergo pre-shipment inspection (PSI). If there is an issue with DRV88471RTER, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DRV88471RTER part is unused and in its original packaging.
Return procedure for DRV88471RTER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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