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Analog Devices Inc./Maxim Integrated TMC5031-LA-T
- Part No.:
- TMC5031-LA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Motor Drivers, Controllers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
TMC5031-LA-T.pdf
- Description:
- IC MTR DRVR BIPOLAR 3.3-5V 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,649
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Product details
Overview
TMC5031-LA-T from TRINAMIC Motion Control GmbH & Co. KG is a dual-axis stepper motor controller and driver IC integrating motion control logic, two 2-phase bipolar stepper drivers, SPI interface, StallGuard2™ load sensing, CoolStep™ current optimization, and SpreadCycle™ chopper-supporting up to 2 × 1.1 A coil current, 4.75–16 V DC supply, and 256 microsteps per full step. It enables compact, energy-efficient motion systems in battery-powered lab automation and medical fluid handling.
For engineers reviewing the TMC5031-LA-T datasheet, TMC5031-LA-T pinout, TMC5031-LA-T application, or TMC5031-LA-T equivalent, key selection considerations include dual-axis integrated ramp control, sensorless stall detection with StallGuard2™, load-adaptive current regulation via CoolStep™, QFN48 7×7 mm package constraints, and SPI-based register configuration without external firmware.
Technical Context
The TMC5031-LA-T implements two independent hardware-based SixPoint™ ramp generators with real-time velocity/acceleration profile updates, enabling precise positioning without host CPU intervention. Each axis supports programmable microstep tables (up to 256 steps), reference switch inputs (REFL/REFR per axis), and interrupt-driven event handling (INT, PP pins).
Its dual driver stage uses SpreadCycle™ chopper modulation with ChopSync2™ for zero-crossing accuracy and low-resonance operation, alongside CoolStep™ current adaptation driven by StallGuard2™ back-EMF measurements. Protection includes overtemperature shutdown, short-to-ground detection, open-load diagnostics, and undervoltage lockout-all monitored via SPI-accessible status registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Motor Support | Dual 2-phase bipolar stepper motors, each with independent current control and microstepping |
| Max Coil Current | 2 × 1.1 A (set via external sense resistors; RSENSE = 0.25 Ω for full rating) |
| Supply Voltage Range | 4.75–16 V DC on VS pin; internal 5 V regulator (5VOUT) powers analog circuitry |
| Microstepping Resolution | Up to 256 microsteps per full step, configurable per axis via sine-wave lookup table |
| Interface | SPI with 40-bit command/status datagram; CSN/SCK/SDI/SDO pins; no external clock required |
| Stall Detection | StallGuard2™ sensorless load measurement using motor coil back-EMF, usable for homing and diagnostics |
| Power Efficiency | CoolStep™ reduces average coil current by up to 75% under partial load, lowering thermal stress and power supply demand |
Pinout & Package
Package: QFN48, 7 mm × 7 mm, 0.5 mm pitch, exposed die pad (DIE_PAD) requiring connection to GND plane for thermal management and EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| O1A1, O1A2, O1B1, O1B2 | Motor 1 coil A/B half-bridge outputs | Drive 2-phase stepper coil terminals; each pair forms full H-bridge with VS return path |
| O2A1, O2A2, O2B1, O2B2 | Motor 2 coil A/B half-bridge outputs | Independent second axis drive outputs; electrically isolated from Motor 1 stage |
| BR1A, BR1B, BR2A, BR2B | Current sense resistor connections | Low-side sense points for coil current feedback; require 0.25 Ω ±1% resistors to ground |
| REFL1, REFR1, REFL2, REFR2 | Reference switch inputs | Active-low digital inputs (5 V tolerant) for mechanical limit/homing switches per axis |
| CSN, SCK, SDI, SDO | SPI interface signals | Standard 4-wire SPI bus; SDO is tristate; supports daisy-chaining via SDO→SDI between multiple TMC5031s |
| INT, PP | Interrupt and position compare outputs | Open-drain, tristate outputs; INT flags ramp events (e.g., target reached); PP pulses on position match |
| DRV_ENN | Driver enable control | Active-high input; drives all motor outputs to high-impedance when asserted, enabling fast stop or power gating |
Key Features
| Feature | Design Value |
|---|---|
| SixPoint™ Ramp Generator | Hardware-accelerated motion control with four independent acceleration/deceleration settings per axis, enabling smooth multi-segment profiles without CPU overhead |
| StallGuard2™ | Real-time mechanical load estimation via coil back-EMF, enabling sensorless homing, stall detection, and CoolStep™ current tuning without external sensors |
| CoolStep™ | Dynamic current reduction based on StallGuard2™ feedback, cutting average power consumption up to 75% while maintaining torque at partial loads |
| SpreadCycle™ Chopper | Adaptive constant-off-time algorithm with automatic fast-decay insertion, delivering smoother current waveforms, lower audible noise, and reduced resonance vs. classic choppers |
| Integrated Diagnostics | On-chip monitoring of temperature, short-to-ground, open-load, and undervoltage faults-each accessible via dedicated SPI status bits |
Applications
| Lab Automation | Medical Fluid Handling |
|---|---|
Use Scenario: Precision syringe pump actuation in automated analyzers requiring repeatable 0.1 µL dispense accuracy across 24/7 operation. IC Role / Device Role / Timing Role: Dual-axis controller driving two stepper motors-one for syringe plunger advancement, one for valve sequencing-synchronized via shared SPI bus. Use Value: StallGuard2™ enables closed-loop position verification without encoders; CoolStep™ extends battery life in portable units by reducing average current draw during idle phases. |
Use Scenario: Miniaturized IV infusion pump with dual-motor control for flow rate adjustment and anti-free-flow safety clamp actuation. IC Role / Device Role / Timing Role: Single-chip solution managing both motor axes with independent microstepping and real-time stall detection for occlusion sensing. Use Value: SpreadCycle™ eliminates mid-band resonance noise critical for patient comfort; QFN48 package allows PCB space reduction in handheld form factors. |
| Office Automation | Battery-Powered Antenna Positioning |
Use Scenario: Document feeder and scanner head movement in multifunction printers where silent, jitter-free motion improves image quality. IC Role / Device Role / Timing Role: TMC5031-LA-T executes coordinated ramp profiles for bidirectional paper transport and optical head scanning using internal SixPoint™ generator. Use Value: Stealth-capable SpreadCycle™ operation meets acoustic requirements (<35 dB); integrated diagnostics reduce field failure rates from motor stall or jam events. |
Use Scenario: Solar-tracking heliostat with dual-axis sun alignment in off-grid installations powered by 12 V LiFePO₄ batteries. IC Role / Device Role / Timing Role: Primary motion controller interfacing with MCU over SPI to execute daily azimuth/elevation trajectories with reference switch homing. Use Value: CoolStep™ cuts average system power by >60%, extending operational time between charges; 4.75–16 V input range accommodates battery voltage sag during discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-axis stepper motor controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMC5041-LA | Pin-compatible upgrade supporting 5–26 V supply, adds StealthChop™ silent chopper mode, but lacks dual programmable microstep tables | Preferred for higher-voltage industrial actuators requiring ultra-low acoustic noise; unsuitable where per-axis microstep waveform customization is needed | Select TMC5041-LA only if supply exceeds 16 V or StealthChop™ noise suppression is mandatory; verify microstep table compatibility in firmware |
| STSPIN820 | Single-axis 1.5 A driver with integrated motion controller; no StallGuard2™, CoolStep™, or SpreadCycle™; uses STEP/DIR interface instead of SPI | Used in cost-sensitive single-motor systems where sensorless load detection and advanced chopper algorithms are not required | Choose STSPIN820 for simpler STEP/DIR-based designs with minimal feature set; avoid when dual-axis coordination or energy optimization is critical |
Compared with TMC5031-LA-T, TMC5041-LA offers extended voltage range and quieter operation but sacrifices microstep flexibility, while STSPIN820 provides basic motion control at lower integration and cost-making TMC5031-LA-T optimal for dual-axis, battery-aware, and diagnostics-rich applications within its 4.75–16 V window.
Availability
TMC5031-LA-T is available at Aetrix Electronics and suitable for lab automation, medical fluid handling, office equipment, antenna positioning, and battery-powered precision motion systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TMC5031-LA-T 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
TRINAMIC Motion Control GmbH & Co. KG is a German semiconductor company specializing in high-precision motion control ICs, known for patented technologies like StallGuard2™ and SpreadCycle™.
The TMC5031 product line delivers highly integrated, energy-efficient stepper motor controllers targeting miniaturized, battery-conscious applications in medical, lab, and industrial automation-emphasizing sensorless diagnostics and adaptive power management.
FAQ
What is the maximum motor supply voltage supported by the TMC5031-LA-T?
The TMC5031-LA-T supports a motor supply voltage (VS) range of 4.75 V to 16 V DC. Operation above 16 V risks exceeding absolute maximum ratings and may cause permanent damage. The internal 5 V regulator (5VOUT) remains functional across this range, but thermal dissipation increases significantly above 12 V-requiring careful PCB layout and heatsinking. For higher-voltage applications, consider the pin-compatible TMC5041-LA, rated up to 26 V.
Does the TMC5031-LA-T require an external microcontroller to operate?
No-the TMC5031-LA-T contains fully autonomous hardware-based SixPoint™ ramp generators for each axis. A host microcontroller is only needed to configure registers (e.g., acceleration, max velocity, microstep resolution) via SPI. Once programmed, the TMC5031-LA-T executes motion profiles independently, including reacting to reference switches and StallGuard2™ events without CPU intervention. This reduces firmware complexity and real-time processing load.
How does StallGuard2™ work on the TMC5031-LA-T, and what is its practical resolution?
StallGuard2™ on the TMC5031-LA-T measures motor load by analyzing back-EMF voltage during the off-time of the chopper cycle-requiring no external sensors. Its output is a 10-bit value (0–1023) accessible via the SG_RESULT register, with typical resolution sufficient to detect <1% torque change. In practice, it enables reliable stall detection at speeds ≥60 RPM and supports sensorless homing, load monitoring, and CoolStep™ current adaptation-all calibrated per motor via the SGT register.
Can the TMC5031-LA-T drive unipolar stepper motors?
No-the TMC5031-LA-T is designed exclusively for 2-phase bipolar stepper motors. Its H-bridge outputs (O1A1/O1A2 etc.) deliver bidirectional current through each coil, which is incompatible with unipolar motor wiring (center-tapped coils). Attempting to connect a unipolar motor will result in incorrect phase excitation and potential driver malfunction. For unipolar applications, discrete H-bridge drivers or dedicated unipolar controllers must be used instead.
What is the purpose of the DIE_PAD on the TMC5031-LA-T QFN48 package?
The exposed DIE_PAD on the TMC5031-LA-T serves as the primary thermal and electrical ground connection for the silicon die. It must be soldered to a large, low-impedance PCB copper plane connected to GND via ≥6 thermal vias (0.3 mm diameter minimum). This ensures effective heat dissipation-critical for sustaining 1.1 A per coil-and reduces EMI by providing a low-inductance return path for high-frequency switching currents from the motor drivers.
TMC5031-LA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- -
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (8)
- Interface:
- SPI
- Technology:
- Power MOSFET
- Step Resolution:
- 1 ~ 1/256
- Applications:
- General Purpose
- Current - Output:
- -
- Voltage - Supply:
- 3.3V ~ 5V
- Voltage - Load:
- 4.75V ~ 16V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-QFN (7x7)
TMC5031-LA-T FAQ
1.How can I place an order for TMC5031-LA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for TMC5031-LA-T 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 TMC5031-LA-T reliable?
The price and inventory of TMC5031-LA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMC5031-LA-T is usually 5 days.
3.What payment methods are accepted for TMC5031-LA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMC5031-LA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMC5031-LA-T?
TMC5031-LA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMC5031-LA-T 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 TMC5031-LA-T?
For technical support, including TMC5031-LA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMC5031-LA-T requirements.
6.How does Aetrix verify that TMC5031-LA-T is sourced from the original manufacturer or authorized distributors?
All TMC5031-LA-T 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 TMC5031-LA-T meets industry standards.
7.What is the process for return or replacement of TMC5031-LA-T?
All TMC5031-LA-T units undergo pre-shipment inspection (PSI). If there is an issue with TMC5031-LA-T, 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 TMC5031-LA-T part is unused and in its original packaging.
Return procedure for TMC5031-LA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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