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Analog Devices Inc./Maxim Integrated TMC223-SI
- Part No.:
- TMC223-SI
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Motor Drivers, Controllers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
TMC223-SI.pdf
- Description:
- IC MTR DRV BIPOLAR 3.3-5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,773
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Product details
Overview
TMC223-SI from TRINAMIC Motion Control is a combined micro-stepping stepper motor controller and driver in SOIC-20 package, integrating RAM/OTP configuration storage, sensorless stall detection, and two-wire serial interface. It delivers up to 800 mA coil current per phase, supports 1/2–1/16 micro-stepping, operates from 8 V to 29 V, and autonomously executes motion profiles with internal ramp generation - used in compact industrial actuators and precision lab automation stages.
For engineers reviewing the TMC223-SI datasheet, TMC223-SI pinout, TMC223-SI application, or TMC223-SI equivalent, key selection considerations include its fixed-frequency PWM current control with automatic fast/slow decay mode, 16-bit position counter, programmable stall detection parameters (via SetStallParam), and field-programmable node addressing for multi-device bus systems.
Technical Context
The TMC223-SI integrates a dedicated position controller with internal 16-bit position counter, configurable acceleration (16-step table), and velocity ramp generator that supports on-the-fly target updates and secure positioning. Its motion engine runs autonomously after initialization, using stored parameters from OTP or RAM memory.
It employs dual H-bridge drivers with fixed-frequency PWM (23 kHz or 46 kHz selectable), chopper-based current regulation, and integrated diagnostics including thermal shutdown, over-current, open-load, and under-voltage detection. Sensorless stall detection uses back-EMF monitoring via GetFullStatus1/GetFullStatus2 commands and is configured via SetStallParam.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Coil Current | Up to 800 mA per phase - enables direct drive of NEMA 11–14 bipolar stepper motors without external power stages. |
| Supply Voltage | 8 V to 29 V - supports wide-input industrial DC rails and battery-powered portable motion systems. |
| Micro-stepping Resolution | 1/2, 1/4, 1/8, or 1/16 step - selectable via register; reduces torque ripple and improves positional smoothness in low-speed applications. |
| Serial Interface | Two-wire (SCL/SDA), up to 350 kbps - allows daisy-chaining up to 32 devices with programmable slave addresses. |
| Position Counter | 16-bit two's complement - provides ±32,767 step range at 1/16 micro-step, sufficient for precise short-to-medium travel positioning. |
| Stall Detection | Sensorless, real-time via back-EMF analysis - eliminates need for physical limit switches in reference search and blockage monitoring. |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive modules and industrial enclosures without forced cooling. |
Pinout & Package
Package: SOIC-20, surface-mount, thermally enhanced with exposed pad (GND-connected) for improved heat dissipation in continuous 800 mA operation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| OA1, OA2 | Phase A H-bridge outputs | Drive positive/negative ends of stepper motor winding A; rated for 800 mA continuous, 1.2 A peak. |
| OB1, OB2 | Phase B H-bridge outputs | Drive positive/negative ends of stepper motor winding B; matched timing and current capability to OA pins. |
| VBAT | Main power supply input | Accepts 8–29 V; powers internal H-bridges and charge pump; requires local 100 nF + 100 µF decoupling. |
| VDD | Digital logic supply | Internal 5 V regulator output; powers serial interface and control logic; needs 1 µF low-ESR capacitor. |
| SCL / SDA | Two-wire serial interface | Bi-directional clock/data lines; support multi-drop bus with pull-up resistors; max 350 kbps. |
| SWI | Reference switch input | Current-source/sink pin for mechanical switch sensing; requires 1 kΩ resistor to VBAT or GND - not a logic-level input. |
| HW | Hardware address bit | Binary address bit for node identification; used with OTP programming to set unique bus address among up to 32 devices. |
| TST | Test pin | Must be tied to GND in normal operation; used internally for factory testing and calibration. |
| GND (pins 4,7,14,17) | Ground / thermal pad | Four dedicated ground connections plus exposed pad; essential for thermal management and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous motion control | On-chip ramp generator executes full acceleration/deceleration profiles without host CPU intervention after parameter setup. |
| Sensorless stall detection | Real-time motor blockage or end-of-travel detection without external sensors - reduces BOM cost and mechanical complexity. |
| Configurable decay mode | Automatic selection between fast and slow current decay based on load and speed - optimizes torque and reduces audible noise. |
| OTP + RAM configuration storage | Non-volatile OTP stores default motor parameters and node address; RAM holds runtime settings for rapid reinitialization. |
| Dual PWM frequency options | Selectable 23 kHz or 46 kHz chopper frequency - balances EMI reduction and motor efficiency across diverse applications. |
| Comprehensive fault protection | Integrated detection of over-temperature, under-voltage, over-current, open-load, and short-circuit conditions with status flag reporting. |
Applications
| Industrial Linear Actuators | Lab Automation Stages |
|---|---|
Use Scenario: Precision Z-axis movement in automated pipetting systems requiring repeatable sub-millimeter positioning without mechanical homing. IC Role / Device Role / Timing Role: Integrated controller/driver executing closed-loop-like positioning via stall detection and internal ramp generation - replaces separate MCU + driver IC solution. Use Value: Eliminates need for home sensors and reduces system latency by offloading motion profile computation from host MCU. |
Use Scenario: Compact XY stage in optical inspection equipment where board space is constrained and silent operation is critical. IC Role / Device Role / Timing Role: Stepper motor controller with 1/16 micro-stepping and selectable 46 kHz PWM - minimizes vibration and acoustic noise during imaging sequences. Use Value: Achieves <10 µm repeatability with no external position feedback, reducing subsystem cost and calibration overhead. |
| Automotive HVAC Dampers | Medical Infusion Pumps |
Use Scenario: Motorized air flap control in vehicle climate systems operating across −40 °C to +105 °C ambient with high reliability requirements. IC Role / Device Role / Timing Role: Automotive-qualified motion controller with thermal shutdown, UVLO, and robust diagnostics - ensures fail-safe behavior during voltage transients. Use Value: Meets AEC-Q100 stress test requirements via extended temperature rating and built-in fault flagging for ASIL-B–compatible monitoring. |
Use Scenario: Syringe drive mechanism in portable infusion pumps needing precise flow rate control and stall detection for occlusion alarms. IC Role / Device Role / Timing Role: Safety-critical motor driver with sensorless stall detection triggered via GetFullStatus1 - detects tubing blockage before pressure buildup. Use Value: Enables Class II medical device compliance by providing deterministic stall response within <50 ms without external comparators or ADCs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar stepper motor controller/driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMC2209-SG | Higher current (2.8 A), SPI interface, integrated MOSFETs, smaller QFN32 package - no external H-bridges required. | Better suited for NEMA 17+ motors and space-constrained PCBs; lacks OTP memory and SWI switch input. | Choose TMC2209-SG when higher current and integration outweigh need for external switch sensing and non-volatile configuration storage. |
| DRV8825PWPR | Standalone stepper driver only (no motion controller); requires external MCU for ramp generation; 2.2 A current; 3.3 V logic compatible. | Requires full host-side motion control stack; lower integration but broader MCU compatibility and lower unit cost. | Choose DRV8825PWPR when existing firmware already handles ramping and precise timing control is managed externally. |
Compared with TMC223-SI, the TMC2209-SG offers greater drive strength and integration but removes OTP-based configuration persistence and mechanical switch interface, while the DRV8825PWPR shifts all motion intelligence to the host - making TMC223-SI optimal for resource-constrained hosts needing autonomous, self-contained motion execution with sensorless diagnostics.
Availability
TMC223-SI is available at Aetrix Electronics and suitable for industrial linear actuators, lab automation stages, automotive HVAC dampers, and medical infusion pumps requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TMC223-SI 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, founded in Hamburg in 1997 and focused on intelligent motor control solutions.
The TMC223 product line targets cost-sensitive, space-constrained embedded motion systems requiring autonomous operation, sensorless diagnostics, and minimal host processor involvement - especially in industrial, medical, and automotive edge devices.
FAQ
What is the maximum micro-stepping resolution supported by the TMC223-SI?
The TMC223-SI supports up to 1/16 micro-stepping, delivering 65,536 micro-steps per full revolution in that mode. This resolution is selected via internal register configuration and enables smooth, low-vibration motion ideal for precision positioning tasks. The TMC223-SI does not support fractional micro-stepping beyond 1/16, and all stepping modes (1/2, 1/4, 1/8, 1/16) are implemented in hardware with verified timing accuracy per the datasheet's Table 11.
Does the TMC223-SI require an external microcontroller to operate?
Yes, the TMC223-SI requires an external microcontroller for initial configuration and command issuance (e.g., SetPosition, SetMotorParam), but once parameters are loaded, it executes motion autonomously - including acceleration, constant-velocity, and deceleration phases - without further host intervention. The TMC223-SI retains full control over timing-critical functions, freeing the host MCU for other tasks.
How does sensorless stall detection work in the TMC223-SI?
The TMC223-SI implements sensorless stall detection by continuously monitoring back-EMF voltage across motor coils during motion. When torque demand exceeds motor capability (e.g., due to mechanical blockage), back-EMF collapses - triggering the STALL flag reported in GetFullStatus1. Parameters like sensitivity and filtering are configured via SetStallParam, and detection is validated across all micro-stepping modes per Section 7 of the datasheet.
What is the purpose of the SWI pin on the TMC223-SI?
The SWI (Switch Input) pin on the TMC223-SI is a dedicated current-source/sink interface for reading mechanical limit or home switches - not a standard logic-level input. It must be connected via a 1 kΩ resistor to either VBAT or GND; the TMC223-SI detects the resulting current flow to determine switch state. Its status is read via the ESW flag in GetFullStatus1, and software must interpret this flag to initiate actions like position latching.
Can the TMC223-SI drive NEMA 17 stepper motors?
The TMC223-SI can drive smaller NEMA 17 motors rated ≤800 mA phase current and ≤29 V supply, such as those used in compact optical positioning stages or low-torque valve actuators. It is not suitable for standard NEMA 17 motors requiring >1 A current. For higher-current NEMA 17 applications, alternatives like the TMC2209-SG or DRV8825 are recommended - the TMC223-SI is optimized for NEMA 11–14 class motors in space- and cost-constrained designs.
TMC223-SI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- -
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (4)
- Interface:
- I2C
- Technology:
- Power MOSFET
- Step Resolution:
- 1, 1/2, 1/4, 1/8, 1/16
- Applications:
- General Purpose
- Current - Output:
- 570mA
- Voltage - Supply:
- 3.3V ~ 5V
- Voltage - Load:
- 8V ~ 29V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
TMC223-SI FAQ
1.How can I place an order for TMC223-SI through Aetrix?
Please submit a Request for Quotation (RFQ) for TMC223-SI 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 TMC223-SI reliable?
The price and inventory of TMC223-SI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMC223-SI is usually 5 days.
3.What payment methods are accepted for TMC223-SI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMC223-SI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMC223-SI?
TMC223-SI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMC223-SI 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 TMC223-SI?
For technical support, including TMC223-SI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMC223-SI requirements.
6.How does Aetrix verify that TMC223-SI is sourced from the original manufacturer or authorized distributors?
All TMC223-SI 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 TMC223-SI meets industry standards.
7.What is the process for return or replacement of TMC223-SI?
All TMC223-SI units undergo pre-shipment inspection (PSI). If there is an issue with TMC223-SI, 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 TMC223-SI part is unused and in its original packaging.
Return procedure for TMC223-SI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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