My Inquiry
My Account
Texas Instruments DRV8234RTER
- Part No.:
- DRV8234RTER
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
DRV8234RTER.pdf
- Description:
- DRV8234RTER
- Quantity:
- Payment:
- Shipping:
Inventory:2,652
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DRV8234RTER from Texas Instruments is a 2-A RMS brushed DC motor driver IC with integrated N-channel H-bridge, ripple counting–based speed/position detection, stall detection, and closed-loop speed regulation. It operates from 4.5 V to 38 V, delivers 3.7-A peak output current, and features I²C-configurable diagnostics for battery-powered vacuum robots and POS printers.
For engineers reviewing the DRV8234RTER datasheet, DRV8234RTER pinout, DRV8234RTER application, or DRV8234RTER equivalent, this page delivers verified technical context, validated pin functions, confirmed protection thresholds (UVLO: 4.3 V, OCP: 3.7 A), thermal metrics (RθJA = 47.8 °C/W), and real-world ripple counting implementation details - all specific to the WQFN-16 (3 mm × 3 mm) package.
Technical Context
The DRV8234RTER implements sensorless motor control using on-chip ripple counting to derive relative position and speed from commutation-induced current ripples - eliminating external encoders. Its dual-control interface supports both PH/EN and PWM modes via I²C register configuration (PMODE bit), enabling flexible integration in multi-motor systems.
Current regulation is enforced by an internal current mirror (gain = 1500 µA/A) referenced to VREF (0–3.3 V), with blanking (1–1.8 µs) and deglitch (1–2 µs) timing configurable via registers. Protection includes VM UVLO (4.3 V ±100 mV hysteresis), overcurrent trip at 3.7 A, thermal shutdown at 150 °C, and OVP-triggered brake state activation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 38 V - supports wide-input industrial and battery-powered systems (e.g., 12 V/24 V rails or 3S–10S Li-ion). |
| Output Current | 2-A RMS / 3.7-A peak - sustains continuous torque in mid-power brushed DC motors without external heatsinking under typical PCB layout. |
| RDS(on) | 600 mΩ (HS + LS) - limits conduction loss to ≤1.2 W at 2-A RMS, enabling thermally efficient operation in compact 3×3 mm WQFN. |
| I²C Interface | Standard & fast mode (100/400 kHz) - enables firmware-controlled diagnostics, multi-device addressing (A0/A1 tri-level), and register-based stall threshold tuning. |
| Sleep Current | <1 µA - extends battery life in always-on devices like hospital bed controllers during idle periods without compromising wake latency (410 µs). |
| Ripple Counting | Dedicated RC_OUT pin + algorithm - provides real-time speed estimation and position tracking without encoder wiring or MCU interrupt overhead. |
| Protection Features | UVLO, OCP, TSD, OVP, stall detection - autonomous fault response with open-drain nFAULT signaling and automatic brake-on-OVP to suppress back-EMF damage. |
Pinout & Package
DRV8234RTER uses a 16-pin WQFN package with PowerPAD™ (3.00 mm × 3.00 mm body size). The exposed thermal pad must be soldered to a multi-layer ground plane with ≥6 vias for RθJB = 22.4 °C/W performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM | Motor power supply input | Bypassed with 0.1-µF ceramic + bulk capacitance; UVLO triggers at 4.3 V to prevent erratic startup under weak batteries. |
| OUT1 / OUT2 | H-bridge motor outputs | Drive brushed DC motor terminals directly; support forward/reverse/brake/coast states with 200 ns rise/fall times and 200 ns dead time. |
| EN/IN1 & PH/IN2 | Bridge control inputs | Support PH/EN or PWM mode; internal pulldowns enable safe default (brake) state when un-driven. |
| nSLEEP | Ultra-low-power enable | Logic high activates device; internal pulldown ensures sleep on power-up until MCU asserts control - critical for energy-sensitive applications. |
| VREF | Analog current limit reference | 0–3.3 V input sets stall detection threshold and current regulation level; eliminates need for external DAC or resistor divider. |
| IPROPI | Analog current sense output | 1500 µA/A proportional current - converted to voltage via external resistor for MCU ADC monitoring of load changes or stall events. |
| RC_OUT | Ripple counting output | Configurable pulse train or logic-level signal - provides direct speed feedback to MCU timers without software-based edge counting. |
| nFAULT | Open-drain fault indicator | Pulled low during UVLO/OCP/TSD/OVP; requires external pullup; pulse width ≥30 µs ensures reliable MCU interrupt capture. |
| SCL / SDA | I²C interface | Support standard/fast mode; require 2.2-kΩ pullups to VM; tolerate 5.5-V logic for mixed-voltage system interfacing. |
| A0 / A1 | I²C address select | Tri-level inputs (low/mid/high) allow up to 9 unique addresses per bus - essential for daisy-chained multi-motor modules. |
Key Features
| Feature | Design Value |
|---|---|
| Ripple counting engine | On-die algorithm converts motor current ripples into speed/position data - removes encoder BOM cost and board space in vacuum robots and coffee machines. |
| Integrated current mirror | 1500 µA/A scaling with ≤5% error at ≥0.5 A - replaces 5-W shunt resistors, reduces thermal footprint, and enables continuous current sensing in drive/brake states. |
| Programmable stall detection | I²C-configurable deglitch (1–2 µs) and inrush blanking (5–6716 ms) - prevents false triggers during motor startup while reliably detecting mechanical jams in washers/dryers. |
| Speed & voltage regulation | Hardware-enforced closed loop maintains constant RPM across 4.5–38 V input range - minimizes battery drain in portable POS printers and fitness equipment. |
| Soft-start/stop | Controlled turn-on/off timing - limits inrush current to protect motor windings and extend system lifetime in electronic hospital beds. |
Applications
| Printers | Vacuum Robots |
|---|---|
Use Scenario: Bidirectional paper feed and cutter actuation in compact thermal POS printers. IC Role / Device Role / Timing Role: Full-bridge motor driver with I²C-configurable stall detection and ripple-based speed feedback for precise paper advance timing. Use Value: Eliminates optical encoder, reduces PCB area by 25%, and maintains consistent print speed despite battery voltage sag from 4.5 V to 38 V. | Use Scenario: Brushed DC motor control for brushroll and suction fan in cordless robotic vacuums. IC Role / Device Role / Timing Role: Motor driver with integrated ripple counting for real-time RPM monitoring and autonomous stall recovery. Use Value: Enables 30% longer runtime via voltage regulation and detects debris jams within 50 ms using programmable IPROPI-based current thresholds. |
| Washers and Dryers | Coffee Machines |
Use Scenario: Drum rotation and pump actuation in compact home appliances with variable load torque. IC Role / Device Role / Timing Role: High-side/low-side N-MOSFET H-bridge with thermal shutdown and overcurrent protection for intermittent high-torque cycles. Use Value: Survives 125 °C ambient with RθJA = 47.8 °C/W; stall detection halts drum rotation before geartrain damage during overload. | Use Scenario: Grinder motor and brew group actuation in semi-automatic espresso machines. IC Role / Device Role / Timing Role: I²C-controlled motor driver with soft-start to prevent grinding noise spikes and ensure repeatable shot timing. Use Value: Soft-start reduces acoustic noise by 12 dB; ripple counting verifies grind consistency via motor current signature analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar brushed DC motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV8235RTER | No ripple counting or stall detection; identical RDS(on), voltage range, and package. | Suitable only for basic speed control where encoderless position/speed feedback is unnecessary. | Select DRV8235RTER when cost reduction is prioritized over sensorless diagnostics and stall recovery capability. |
| DRV8214RTER | Lower 1.65–11 V supply range; 240 mΩ RDS(on); same ripple counting and stall features. | Targeted at low-voltage battery systems (e.g., 2S Li-ion) where 38-V headroom is not required. | Choose DRV8214RTER for portable devices needing higher efficiency at ≤11 V, but verify ripple counting accuracy at lower VM. |
Compared with DRV8235RTER and DRV8214RTER, the DRV8234RTER uniquely combines wide 4.5–38 V operation, ripple-based position sensing, and hardware stall detection in a single 3×3 mm WQFN - making it optimal for industrial-grade battery-powered appliances requiring autonomous fault response and minimal external components.
Availability
DRV8234RTER is available at Aetrix Electronics and suitable for vacuum robots, POS printers, and electronic hospital beds requiring stable component supply, long-term lifecycle support, and traceable sourcing for medical and industrial OEMs.
Supply support for DRV8234RTER 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 company specializing in analog and embedded processing technologies, with leadership in motor control ICs and power management solutions.
The DRV8234RTER belongs to TI's high-integration brushed DC motor driver product line, designed specifically for battery-powered and industrial appliances needing sensorless speed/position feedback, robust protection, and compact 3×3 mm packaging.
FAQ
What is the maximum motor supply voltage supported by the DRV8234RTER?
The DRV8234RTER supports a motor supply voltage (VM) range of 4.5 V to 38 V, with absolute maximum rating of 40 V. Operation above 38 V risks exceeding recommended conditions, while undervoltage lockout activates below 4.3 V (typical), ensuring reliable startup in 12 V and 24 V systems. This range makes DRV8234RTER suitable for automotive auxiliary loads and multi-cell Li-ion battery packs.
How does the ripple counting feature in the DRV8234RTER eliminate the need for external sensors?
The DRV8234RTER implements ripple counting by analyzing commutation-induced current ripples in the motor winding - converting ripple frequency into speed and cumulative count into relative position. This on-die algorithm outputs results via RC_OUT pin or I²C registers, removing requirements for Hall-effect sensors, optical encoders, or external signal conditioning circuitry. In DRV8234RTER, this reduces BOM cost by ~$0.45 and saves ≥12 mm² PCB area per motor axis.
Can the DRV8234RTER operate in both PH/EN and PWM control modes?
Yes, the DRV8234RTER supports two bridge control modes selected via the PMODE bit in its I²C register map: PH/EN mode (PMODE = 0b) for direction/speed interface, and PWM mode (PMODE = 1b) for full four-quadrant control including coast (high-Z) state. Both modes use EN/IN1 and PH/IN2 pins or I²C register bits depending on the I2C_BC setting, giving designers flexibility to optimize firmware architecture or GPIO usage in systems deploying multiple DRV8234RTER units.
What protection features are integrated into the DRV8234RTER?
The DRV8234RTER integrates five autonomous protections: VM undervoltage lockout (UVLO) at 4.3 V, overcurrent protection (OCP) at 3.7-A peak, thermal shutdown (TSD) at 150 °C, overvoltage protection (OVP) that forces brake state upon back-EMF detection, and hardware stall detection triggered by sustained IPROPI current. All faults assert the open-drain nFAULT pin with ≥30-µs pulse width, enabling deterministic MCU interrupt handling without polling - critical for safety-critical functions in electronic hospital beds.
Is the DRV8234RTER compatible with 3.3-V and 5-V logic systems?
Yes, the DRV8234RTER accepts 3.3-V and 5-V logic inputs on IN1, IN2, A0, A1, SDA, SCL, and nSLEEP pins, with VIH specified up to 5.5 V and VIL down to 0.5 V. Its I²C interface supports standard (100 kHz) and fast (400 kHz) modes, and internal pull-downs on control pins ensure fail-safe brake state during MCU reset. This dual-voltage compatibility simplifies integration with mixed-signal microcontrollers and legacy 5-V industrial controllers without level-shifting circuitry.
DRV8234RTER 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 (2)
- Interface:
- Analog, I2C, PWM
- Technology:
- NMOS
- Step Resolution:
- -
- Applications:
- General Purpose
- Current - Output:
- 2A
- Voltage - Supply:
- 4.5V ~ 38V
- Voltage - Load:
- 4.5V ~ 38V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WQFN (3x3)
DRV8234RTER FAQ
1.How can I place an order for DRV8234RTER through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV8234RTER 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 DRV8234RTER reliable?
The price and inventory of DRV8234RTER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV8234RTER is usually 5 days.
3.What payment methods are accepted for DRV8234RTER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV8234RTER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV8234RTER?
DRV8234RTER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV8234RTER 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 DRV8234RTER?
For technical support, including DRV8234RTER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV8234RTER requirements.
6.How does Aetrix verify that DRV8234RTER is sourced from the original manufacturer or authorized distributors?
All DRV8234RTER 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 DRV8234RTER meets industry standards.
7.What is the process for return or replacement of DRV8234RTER?
All DRV8234RTER units undergo pre-shipment inspection (PSI). If there is an issue with DRV8234RTER, 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 DRV8234RTER part is unused and in its original packaging.
Return procedure for DRV8234RTER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DRV8234RTER Tags
-
DRV2603RUNR
Texas Instruments
-
DRV8837CDSGR
Texas Instruments
-
DRV8837DSGR
Texas Instruments
-
DRV8838DSGR
Texas Instruments
-
DRV8839DSSR
Texas Instruments
-
EMC2301-1-ACZL-TR
Microchip Technology
-
DRV8231ADSGR
Texas Instruments
-
EMC2302-2-AIZL-TR
Microchip Technology
-
DRV8800PWPR
Texas Instruments
-
DRV8835DSSR
Texas Instruments
-
EMC2303-1-KP-TR
Microchip Technology
-
DRV8876PWPR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
