Motor Drive & Control Solutions
TI is a global market leader that leverages its rich history in advanced motor drive and control, with broad analog and microcontroller portfolios, to deliver complete motor system solutions.
    • Jan 9, 2017

    The story of motor-drive integration

    Just like every MOSFET needs a gate driver to switch it, there’s always a driving force behind each motor. Depending on the complexity level and the system’s cost, size and performance requirements, there are different ways to drive motors. The most simple and discrete solution is a totem-pole/push-pull circuit consisting of two transistors. These transistors, which can be different combinations of NPN...
    • Dec 12, 2016

    Gallium nitride transistors open up new frontiers in high-speed motor drives

    Unlike switched-mode power supplies, three-phase motor-drive inverters generally use low switching frequencies; only a few tens of kilohertz. High-power motors were large with high inductance windings; therefore, the current ripple was acceptable eve...
    • Nov 17, 2016

    The other motors in electric vehicle systems (part 4)

    Electric power steering (EPS) is another example of non-traction motor control in electric vehicles (EV) . In EPS systems, an electric motor is used to supplement or replace traditional hydraulic systems to produce assisting torque that helps th...
    • Nov 8, 2016

    Five benefits of enhanced PWM rejection for in-line motor control

    There’s almost always more than one way to solve a problem. Sometimes the most widely used method doesn’t yield the biggest benefit. System designers working on motor control projects use various current measurement methods to ensur...
    • Nov 2, 2016

    Increase the reliability of industrial drives with an EMC-compliant resolver sensor interface based design

    Resolvers provide accurate and high-reliable position feedback in industrial drives like servo drives, especially in harsh industrial environments with dust and temperatures above 150°C. A resolver is an absolute mechanical angle sensor and operates as a variable coupling transformer. This means that the amount of magnetic coupling between the primary winding and two secondary windings varies according to the angle...
    • Nov 1, 2016

    How to create a dynamic power solution for stepper motors, relays and LEDs

    As you can see from my previous blog , my dad has always been a great source of inspiration and knowledge for me. There is one piece of advice that keeps coming back to me: “Measure twice and cut once.” However, as engineers, whenever we are challenged to design a control or power circuit for stepper motors, LEDs and other peripherals, we like to adapt the system to specific rules and conditions. We are essentially...
    • Oct 31, 2016

    The other motors in electric vehicle systems (part 3)

    The switching of the three-phase inverter needs to be controlled by digital logic – typically a programmable microcontroller (MCU) - to regulate the torque or velocity of the motor while maximizing the efficiency (required torque with minimum c...
    • Oct 26, 2016

    Understanding isolation requirements for industrial drives

    In my last blog post , we looked at electromagnetic compatibility (EMC) and electromagnetic interference (EMI) requirements for industrial drives. Why would we develop hardware with isolation? We can isolate sensitive measurement from noisy supply domains for improved accuracy, reduction of common mode noise although isolation may not be required due to safety. We call this functional isolation. The most obvious...
    • Oct 17, 2016

    The other motors in electric vehicle systems (part 2)

    In the previous installment we had just discussed EV auxiliary motor systems. Most of these are low voltage and low to medium current three-phase brushless DC motors which can – with the right expertise – be controlled without ...
    • Oct 14, 2016

    How to avoid motor and system overvoltage using AVS technology without external components

    In the world of advanced and complex technology, system protection becomes a very important aspect of delivering reliable, robust and high-performance equipments for both industrial and automotive that’s protected against malfunctioning due to overvoltage or overcurrent. For motor-based systems, there must be an energy transferred to the motor in order for the motor to spin. The energy transmitted from a power...
    • Oct 12, 2016

    Know your electromagnetic compatibility requirements for designing industrial drives

    Variable-speed and industrial drive design engineers need to know electromagnetic compatibility (EMC) immunity and electromagnetic interference (EMI), as well as isolation safety requirements. Do you know your requirements? Each end-equipment design has to meet its own standards, which ensures that the product is compliant and safe for use in the desired end equipment category and environment. The corresponding end...
    • Oct 6, 2016

    How motor drivers aid in an automobile’s “limp-home” mode

    Have you ever had the check engine light come on while you are driving and your vehicle’s operation is limited? This can happen when there is an issue with the transmission; to protect itself, the vehicle might stay in first gear. Or it can hap...
    • Sep 9, 2016

    EtherCAT and C2000™ MCUs - real-time communications meets real-time control

    We heard you and now we want to help you! We released our first DesignDRIVE industrial communication reference design (TIDM-DELFINO-ETHERCAT) to help ease your development of IEC 61158-compliant EtherCAT slave nodes based on our C2000™ real-tim...
    • Aug 17, 2016

    Accuracy? Resolution? Arc minutes? How to take charge of your motor control design

    Imagine your commute this morning in your car. The traffic light turned green, and you pushed the accelerator as soon as you could. Your car responded within seconds and you continued on toward the office. But behind the scenes, inside your car, there was a lot more happening. Let’s take a look. When you press the pedal, the motor does its best to provide the necessary torque to your car through the shafts. The...
    • Aug 8, 2016

    How to reduce system cost in a three-phase IGBT-based inverter design

    Most three-phase inverters use insulated gate bipolar transistors (IGBTs) in applications like variable-frequency drives , uninterruptible power supplies, solar inverters and other similar inverter applications. Each phase of a three-phase inverter uses a high- and low-side IGBT to apply an alternating positive and negative voltage to the motor coils. Pulse-width modulation (PWM) to the motor controls the output voltage...
    • Jul 18, 2016

    What is a smart gate drive architecture? Part 2

    Welcome back to this series about the smart gate-drive architecture. In case you missed the first post, you can find it here . In the first installment I covered IDRIVE, a feature to dynamically control gate-drive current and in turn control the MOSFE...
    • Jun 29, 2016

    How to minimize MOSFET conduction loss in battery-powered motor drives

    Many applications use low voltage battery (2-10 cell lithium-ion) powered motor drives like power tools , garden tools and vacuum cleaners . These tools use brushed or brushless DC motors (BLDC). BLDC motors are more efficient and have less maintenance, low noise and longer life spans. The most important performance requirements of the power stage required to drive these tools are small form factor, high efficiency...
    • Jun 15, 2016

    What is a smart gate-drive architecture? - Part 1

    Control, efficiency, protection … these are all terms you hear regarding new integrated circuits, but what do they really mean? While I can’t speak to all of the devices, I can talk about a new technology that Texas Instruments is introd...
    • May 2, 2016

    How to detect insulation failures in electrical equipment – part 2

    In my last post , I emphasized the importance of insulation in electrical equipment. In this post, I will describe another method to measure the leakage current through the insulation resistance. Figure 1 is a high-level block diagram of this method, which entails applying a fixed voltage (500V, generated using a high-voltage DC/DC converter on a daughter board) and measuring the voltage across the shunt that results...
    • Apr 26, 2016

    Accelerate to higher performance

    Engineers designing real-time control systems are constantly faced with the challenge of optimizing performance. These systems require minimal latency where the time delay between sampling, processing, and outputting must fit within a tight tim...
    • Apr 22, 2016

    How to detect insulation failures in electrical equipment – part 1

    Insulation deterioration is one of the primary causes of electrical-equipment failure in motors, high-voltage transformers and generators. Insulation failure can cause dangerous voltages, fires, high-fault currents and explosions, damage to equipment and property, personal injury, and fatal accidents. The main causes of insulation failure are dielectric contamination, temperature cycling, excessive overloads, excessive...
    • Apr 12, 2016

    Industrial drive control architectures: Part 3

    In the previous posts of this blog series, we investigated how FPGAs were introduced into drives architectures as well as the challenges that FPGAs can bring in our second post. In this part we will give an overview of many key functions that c...
    • Mar 29, 2016

    Design an energy-efficient, lower-acoustic cooker hood with an elegant user interface

    Cooker hoods extract steam, fumes and cooking odors from kitchens. Depending on the country, cooker hoods are also called kitchen hoods, fumes extractors and kitchen extractor fans. Next-generation cooker hoods include sensing, motor control, bias ...
    • Mar 17, 2016

    What happens when low-voltage BLDC motors drive appliance subsystems

    Given their high efficiency, lower audible noise and long life cycles, brushless DC (BLDC) motors are widely used in household appliance subsystems such as refrigerator, dishwasher and washing machine fans and pumps. These subsystems usually requir...
    • Mar 15, 2016

    Industrial drive control architectures: Part 2

    In the first post of this series , we looked at how FPGAs were introduced into the drives architectures. Now, let’s take a look at some of the challenges of using an FPGA in an industrial drive/servo architecture and how new capabilities of cont...