Sensorless High-Speed FOC Reference Design for Drone ESC
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

Description & Features

Technical documentation

Support & Training

Order Now

See the Important Notice and Disclaimer covering reference designs and other TI resources.

Key Document


ESC modules are important subsystems for non-military drones and users demanding more efficient models that provide longer flight times and higher dynamic behavior with smoother and more stable performance. This design implements an Electronic Speed Controller (ESC) commonly used for unmanned aerial vehicles (UAV) or drones.

The speed control is done sensorless, and the motor has been tested up to 1.2 kHz electrical frequency (12kRPM with a 6 pole pair motor), using FOC speed control. Our high-speed sensorless-FOC reference design for Drone ESCs provides best-in-class FOC algorithm implementation to achieve longer flight time, better dynamic performance and higher integration, resulting smaller board size and fewer BOM components. Sensorless high speed FOC control using TI’s FAST™ software observer leveraging InstaSPIN-Motion™ C2000™ LaunchPad and DRV8305 BoosterPack.

  • InstaSPIN-FOC™ sensorless FOC achieves highest dynamic performance. Tested up to 12,000 RPM with 3 LiPo cells
  • High dynamic performance: 1 kRPM to 10 kRPM (electrical frequency 100 Hz to 1 kHz) speed in <0.2 s to provide high performance yaw and pitch movement
  • Fast speed reversal capability for roll movement
  • Longer flight time due to improved efficiency of FOC over block commutation
  • Higher PWM switching frequency, tested up to 60 kHz to reduce current/torque ripple with low inductance / high-speed motors, and to avoid interference with ultrasonic sensors
  • Fast time-to market due to InstaSPIN-FOC’s  automatic motor parameter identification: auto-tuning sensorless FOC solution
  • Motor temperature estimation from winding resistance changes to protect motor from damage during temporary overload conditions

See the Important Notice and Disclaimer covering reference designs and other TI resources.


Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Design Guide

Get results faster with test and simulation data that's been verified.

Download Design Guide

TI Devices (5)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD18540Q5B  60V, N ch NexFET MOSFET™, single SON5x6, 2.2mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
DRV8305  45-V max 3-phase smart gate driver with current shunt amplifiers & SPI   Motor drivers  Sample & Buy View Design Kits & Evaluation Modules
LMR16006  SIMPLE SWITCHER® 4V to 60V, 600mA Step-Down Regulator with Low Iq  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules
TMS320F28068M  C2000™ 32-bit MCU with 90 MHz, FPU, VCU, 256 KB Flash, InstaSPIN-MOTION  Microcontrollers (MCU)  Not Available View Design Kits & Evaluation Modules
TMS320F28069M  C2000™ 32-bit MCU with 90 MHz, FPU, VCU, CLA, 256 KB Flash, InstaSPIN-MOTION  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD18540Q5B VSON-CLIP (DNK)| 8 Download Download
DRV8305 Download Download
LMR16006 Download Download
TMS320F28068M Download
TMS320F28069M Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.

Technical documentation

See the Important Notice and Disclaimer covering reference designs and other TI resources.

More literature (1)
Title Date Type
Solving drone makers’ design challenges 27 Jul 2017
User guide (1)
Title Type Size (KB) Date
PDF 1674 08 Dec 2016
Design files (2)
Title Type Size (KB) Date
ZIP 442 12 Dec 2016
ZIP 291 12 Dec 2016
Related Tools & Software

Reference Designs (1)

Name Part Number Tool Type
4.4 V to 30 V, 15 A, High Performance Brushless DC Drone Propeller Controller Reference Design  TIDA-00643  Reference design 

Hardware development (2)

Name Part Number Tool Type
C2000 Piccolo MCU F28069M LaunchPad™ development kit  LAUNCHXL-F28069M  Evaluation board 
DRV8305N 3-Phase Motor Drive BoosterPack Evaluation Module  BOOSTXL-DRV8305EVM  Evaluation board 

Software development (1)

Name Part Number Software Type
MotorWare™ Software  MOTORWARE  Application software & framework 

Support & training

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.

If you have questions about quality, packaging, or ordering TI products visit our Support page.

Technical articles