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STMicroelectronics L6480HTR
- Part No.:
- L6480HTR
- Manufacturer:
- STMicroelectronics
- Category:
- Motor Drivers, Controllers
- Package:
- 38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
L6480HTR.pdf
- Description:
- IC MTR DRV BIPLR 3.3/5V 38HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,138
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Product details
Overview
L6480HTR from STMicroelectronics is a fully integrated microstepping motor controller IC with embedded motion engine and SPI interface, designed for driving two-phase bipolar stepper motors. It features 7.5–85 V operating voltage, dual N-channel MOSFET gate drivers, up to 1/128 microstepping resolution, sensorless stall detection, and programmable non-dissipative overcurrent protection-enabling precise closed-loop positioning in compact industrial motion systems.
For engineers reviewing the L6480HTR datasheet, L6480HTR pinout, L6480HTR application, or L6480HTR equivalent, this device supports SPI-configurable motion profiles (acceleration, speed, target position), BEMF-compensated voltage-mode driving, and comprehensive thermal/bus/overcurrent/stall protections critical for reliable stepper control in automated equipment, medical devices, and precision lab instrumentation.
Technical Context
The L6480HTR implements a digital motion engine that executes user-defined positioning commands (GoTo, Move, Run) via SPI register writes, with real-time acceleration/deceleration ramp generation and absolute position tracking using an internal 32-bit counter. Its voltage-mode PWM driving compensates for back-EMF, bus voltage variation, and winding resistance thermal drift to maintain consistent microstep accuracy.
It integrates dual full-bridge gate drivers with programmable deadtime, blanking time, and Miller clamp functionality, supporting external N-channel power MOSFETs. Protection logic includes UVLO on VCC and VS rails, thermal warning/shutdown, and configurable stall detection based on current-sense ADC readings and phase current asymmetry analysis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 7.5 V to 85 V - supports wide-range DC bus inputs including 24 V, 48 V, and 72 V industrial supplies without external step-up/down conversion. |
| Microstepping Resolution | Up to 1/128 step - enables smooth, low-vibration motion and high positional resolution (e.g., 0.007° per microstep on 1.8° motor). |
| SPI Interface Speed | Up to 5 Mbit/s - allows rapid parameter updates and status reads during dynamic motion sequences without CPU bottleneck. |
| Stall Detection | Sensorless, based on real-time phase current monitoring and BEMF analysis - eliminates need for external limit switches or encoders in homing and end-of-travel detection. |
| Overcurrent Protection | Programmable non-dissipative threshold (OCD_TH register) - triggers fast shutdown without shunt resistor heating or power loss during fault conditions. |
| Thermal Protection | Integrated thermal warning (TH_WRN) and shutdown (TH_SD) at 150 °C junction - prevents MOSFET driver damage under sustained overload or poor heatsinking. |
| Supply Regulation | On-chip 3.3 V and 5 V regulators - powers internal logic and external peripherals, reducing external LDO count and board space. |
Pinout & Package
HTSSOP38 package: thermally enhanced 38-pin thin shrink small outline package with exposed thermal pad (EP), 0.65 mm pitch, body size 12.5 × 6.1 mm, suitable for high-power motor drive applications requiring efficient heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Logic supply input | 3.3 V ±5 % regulated supply for internal digital core and SPI interface; decoupling required near pin. |
| VCC | Analog/driver supply input | 5 V ±5 % supply for gate drivers and analog blocks; powers internal 5 V regulator output. |
| VS | Motor power rail input | High-side supply for external N-MOSFET bridges; accepts 7.5–85 V; connects to motor phase outputs via external FETs. |
| OUT1A–OUT2B | Gate drive outputs | Four independent high-current gate drivers (2 per bridge) for N-channel MOSFETs; each capable of 600 mA sink/source. |
| REFIN | Current sense reference | Analog input setting full-scale current limit for phase current regulation; tied to external resistor divider for trip point calibration. |
| FLAG | Interrupt/status output | Open-drain signal indicating alarm conditions (stall, overtemp, UVLO, OCD); configurable via ALARM_EN register. |
| BUSY/SYNC | Command execution indicator | Active-low open-drain output pulses during motion command execution or serves as synchronous clock output for multi-device coordination. |
| SPI_CS, SPI_SCK, SPI_MISO, SPI_MOSI | SPI interface signals | Standard 4-wire SPI interface (mode 3) for configuration, motion command issuance, and real-time status polling. |
| SW | External switch input | Digital input for hardware-triggered hard stop or limit switch detection; debounced and interrupt-capable. |
Key Features
| Feature | Design Value |
|---|---|
| Embedded Motion Engine | Hardware-accelerated motion profile generator supporting trapezoidal and S-curve ramps, eliminating host MCU computational load for real-time trajectory planning. |
| Voltage-Mode Microstepping | Compensates for BEMF, bus voltage drop, and winding resistance drift in real time-maintains true 1/128-step linearity across temperature and load variations. |
| Sensorless Stall Detection | Uses internal ADC and phase current asymmetry analysis to detect rotor lock without current sense resistors or external sensors-reducing BOM cost and layout complexity. |
| Programmable Gate Drivers | Configurable slew rate, deadtime (100–1000 ns), blanking time (100–1000 ns), and Miller clamp activation-optimizing switching efficiency and shoot-through immunity. |
| Integrated Protection Suite | Simultaneous monitoring of VS undervoltage, VCC undervoltage, overtemperature, overcurrent, and motor stall-with independent flag reporting and configurable response (shutdown or warning). |
Applications
| Automated Lab Equipment | Medical Imaging Positioning |
|---|---|
|
Use Scenario: Precision linear stage control in DNA sequencers and microplate handlers requiring repeatable sub-micron positioning. IC Role / Device Role / Timing Role: Primary motion controller executing GoTo and Move commands via SPI; manages acceleration profiles and stall recovery autonomously. Use Value: Eliminates need for external motion controller FPGA/MCU, reduces system latency, and ensures deterministic 1/128 microstep accuracy across ambient temperature shifts. |
Use Scenario: Motorized gantry movement in portable ultrasound scanners where silent, vibration-free operation is essential for image stability. IC Role / Device Role / Timing Role: Stepper driver with low-speed optimization and BEMF compensation enabling smooth <1 RPM motion without resonance artifacts. Use Value: Achieves acoustic noise reduction below 25 dB(A) while maintaining torque consistency-critical for patient comfort and diagnostic clarity. |
| Industrial Packaging Machinery | 3D Printer Extruder Control |
|
Use Scenario: High-speed indexing of packaging conveyors with frequent start/stop cycles and variable load inertia. IC Role / Device Role / Timing Role: Closed-loop stepper controller using sensorless stall detection to verify mechanical engagement before advancing next cycle. Use Value: Prevents missed steps and production jams by detecting belt slippage or jammed product in real time-reducing unplanned downtime by >40%. |
Use Scenario: Filament feed mechanism requiring precise extrusion volume control synchronized with print head motion. IC Role / Device Role / Timing Role: SPI-commanded stepper driver with programmable KVAL parameters for adaptive current regulation during acceleration/deceleration phases. Use Value: Maintains consistent extrusion pressure across print speeds from 20–120 mm/s, minimizing layer adhesion defects and dimensional inaccuracies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar stepper motor controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMC2209-LA | Integrated MOSFETs (2 A RMS), standalone UART interface, no external gate drivers required; lower max voltage (45 V). | Better suited for compact, low-to-mid power printers; lacks sensorless stall detection robustness at high voltage (>60 V). | Select when board space is constrained and motor current ≤2 A; avoid for 72 V industrial systems requiring external FET flexibility. |
| DRV8825 | Fixed 1/32 microstepping, no motion engine, no stall detection, requires external MCU for profile generation; 45 V max. | Cost-sensitive open-loop systems where position verification is handled externally (e.g., via encoder feedback). | Choose only for simple constant-speed or step-clock applications; not viable for autonomous positioning or stall-aware motion. |
Compared with TMC2209-LA and DRV8825, the L6480HTR uniquely combines high-voltage capability (85 V), programmable gate drivers for discrete FET selection, and a self-contained motion engine-making it the only option among the three capable of autonomous, protected, high-resolution positioning in demanding industrial environments.
Availability
L6480HTR is available at Aetrix Electronics and suitable for automated lab equipment, medical imaging positioning, and industrial packaging machinery requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for L6480HTR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power management, motion control, and microcontroller solutions for industrial, automotive, and consumer markets.
The L6480HTR belongs to ST's dedicated stepper motor controller product line, engineered to replace discrete MCU + driver combinations with single-chip motion intelligence-targeting applications demanding reliability, precision, and reduced firmware development effort.
FAQ
What is the maximum motor supply voltage supported by the L6480HTR?
The L6480HTR supports a motor supply (VS) range of 7.5 V to 85 V, verified per Absolute Maximum Ratings Table 2 in the official datasheet (DocID023278 Rev 7). This enables direct connection to common industrial DC bus voltages including 24 V, 48 V, and 72 V without intermediate conversion stages.
Does the L6480HTR require external current sense resistors for stall detection?
No. The L6480HTR implements sensorless stall detection using internal ADC measurements of phase current asymmetry and BEMF signature analysis-eliminating the need for external shunt resistors, saving PCB area and reducing thermal error sources in the current path.
Can the L6480HTR generate S-curve motion profiles?
Yes. While the default motion engine supports trapezoidal profiles, S-curve acceleration/deceleration can be implemented by dynamically updating the ACC and DEC registers during motion using SPI commands-leveraging the device's real-time register write capability and internal position counter for smooth jerk-limited trajectories.
How is thermal protection implemented in the L6480HTR?
The L6480HTR integrates a junction temperature sensor with two thresholds: TH_WRN (thermal warning at ~130 °C) and TH_SD (thermal shutdown at ~150 °C). When triggered, the STATUS register flags TH_STATUS bits and the FLAG pin asserts, allowing host systems to initiate graceful deceleration or forced Hi-Z state before shutdown.
L6480HTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- STSPIN L64
- Package/Case:
- 38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- -
- Function:
- Controller - Commutation, Direction Management
- Output Configuration:
- Pre-Driver - Half Bridge (4)
- Interface:
- SPI
- Technology:
- DMOS
- Step Resolution:
- 1 ~ 1/128
- Applications:
- General Purpose
- Current - Output:
- -
- Voltage - Supply:
- 3.3V, 5V
- Voltage - Load:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 38-HTSSOP
L6480HTR FAQ
1.How can I place an order for L6480HTR through Aetrix?
Please submit a Request for Quotation (RFQ) for L6480HTR 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 L6480HTR reliable?
The price and inventory of L6480HTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L6480HTR is usually 5 days.
3.What payment methods are accepted for L6480HTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L6480HTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for L6480HTR?
L6480HTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your L6480HTR 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 L6480HTR?
For technical support, including L6480HTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L6480HTR requirements.
6.How does Aetrix verify that L6480HTR is sourced from the original manufacturer or authorized distributors?
All L6480HTR 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 L6480HTR meets industry standards.
7.What is the process for return or replacement of L6480HTR?
All L6480HTR units undergo pre-shipment inspection (PSI). If there is an issue with L6480HTR, 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 L6480HTR part is unused and in its original packaging.
Return procedure for L6480HTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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