Sewing Machines Content
Our regulators, LED drivers, rectifiers, converters, and motor drivers provide exceptional system performance and top-of-the-line efficiency in small package sizes. They include a broad range of protection features, such as thermal management, to ensure operation is secure and reliable.
MPS’s cost-effective, space-saving power solutions help simplify the design process to create efficient, sophisticated sewing machines.
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BIPOLAR STEPPER MOTORS (PART II): MICROSTEPPING AND DECAY MODES
In Part I of this series, we covered the bipolar stepper motor’s three control modes as well as its mechanical structure, including dual full-bridge drive. In Part II, we will discuss microstepping and how it controls the dual full-bridge drive. Previously, half-step stepping mode was introduced as a combination of single-phase stepping and full-step stepping to obtain more electrical angle pos...
BIPOLAR STEPPER MOTORS (PART I): CONTROL MODES
In the intelligent era, stepper motors are widely used due to their unique open-loop position control performance. Each device has specific requirements that ensure there is a smooth output torque while the stepper motor rotates. Rotation stability is closely related to the motor’s physical construction as well as its control mode. This article introduces the bipolar stepper motor and discusses i...
UNDERSTANDING ANGLE POSITION SENSOR RESOLUTION AND BANDWIDTH IN SERVO CONTROL LOOPS
This presentation details the advantages of magnetic angle sensing compared to optical sensing, the differences between Hall-effect and TMR-based solutions, and how to assess resolution accuracy and bandwidth. Learn the impact of error sources, and the importance of calculating real resolution in an application. Next-generation TMR sensor solutions such as the MA600 offer new levels of sensitivity...
USING CURRENT REGULATION IN DC MOTOR DRIVERS
When starting a DC motor, large currents can be required that place a burden on the motor driver and power supply. This article will discuss using the current regulation function integrated into many motor driver ICs, while using examples from Monolithic Power Systems (MPS) to address high-current conditions. In many cases, using current regulation can allow designers to use a smaller motor drive...
MA780 & MA782: NEW MAGNETIC ANGLE SENSORS INCLUDE WORLD'S SMALLEST ICENCODER
The new MA78x family of magnetic angle sensors feature the world's smallest ICEncoderTM, and offer the next generation of sensing for battery-powered and angle measurement applications. Smallest Footprint:2mmx2mm(MA782)or 3mmx3mm(MA780)package Optimized for low power systems Wake on change Resolves small angle changes See All Angular Position Sensors
USING MAGALPHA ROTARY MAGNETIC SENSORS IN SIDE SHAFT MODE
The previous article discussed types of magnet and their uses with MPS MagAlpha sensors in “end of shaft” mode. This article will explore the “side shaft“ mode topology. MPS MagAlpha sensors utilize an array of Hall elements in the center of the IC that sense the horizontal vector of the field from the rotating magnet. This field typically comes from a simple two-pole, diam...
CHOOSING THE RIGHT MAGNET FOR MAGALPHA SENSORS
The MPS MagAlpha family offers rotary Hall effect magnetic sensors that sense the position of a magnet as it rotates above or at the side of the sensor. Exact magnet sizes, shapes, and materials should be selected depending on application requirements and target costs. This article discusses tradeoffs, and how to choose the best magnet for an application. MPS MagAlpha sensors utilize an array o...
AN INTRODUCTION TO THE MAGALPHA MAGNETIC ANGLE SENSOR FAMILY
The ability to detect position or speed is a fundamental requirement in the control and monitoring of many mechanical systems. Slow speed position measurement in applications such as motorized actuators has historically used resistive potentiometers. In high-speed applications such as servo motors, optical encoders have typically been used. Though potentiometers are inexpensive, they suffer from ...
MCAR ANGLE SENSORS
The mCar is a demonstration and marketing platform for MPS hardware. It integrates MPS power and motion control components in a real, large scale system that allows MPS teams to implement and test hardware and software on a challenging application. mCar was fully developed and fabricated in-house at MPS. Learn more about themCaror visit ourautomotivecomponentspage. MA704 10-bit, High Bandwith, ...
ENERGY RECYCLING IN DC MOTOR DRIVES
When decelerating a moving mass in a permanent magnet motor drive, energy stored in the mechanical system may be returned through the motor driver to the power source. If this energy is not properly accounted for, it can cause damage to the motor driver or the rest of the system by causing an increase in the power supply voltage. In this article, we will look at ways to dissipate this energy safe...
MA102/MA302: 12-BIT, COMPACT ANGLE SENSORS FOR BLDC MOTOR COMMUTATION
The MagAlpha MA102 and MA302 series replaces discrete Hall switches in any block commutated brushless DC (BLDC) motor, including power tools, fans, white goods, automotive applications, and more. These sensors are available in a small QFN (3mmx3mm) package, providing flexibility for highly compact designs. Changing to a single MA102 or MA302 reduces board space by up to 70% with no need for a sepa...
MA800 FAMILY: MAGNETIC ANGLE SENSORS FOR HMI KNOBS, DIALS, AND BUTTONS
The MA800, MA820, and MA850 family of magnetic angle sensors comprises a complete solution in a tiny, 3mmx3mm QFN package. Different output interfaces — including SPI, SSI, ABZ, and PWM — offer design flexibility and additional compatibility. Features Contactless Sensing for Long Life with No Wear 8-Bit Resolution Absolute Angle Encoder 0° to 360° True Absolute Angle Output Push and Pull De...
MAGALPHA POSITION SENSOR USE CASE: POWER DRILL
In this use case, well consider the application of MagAlpha Angle Sensors for BLDC power tools. Using MPSs precision angle solution, all three Hall cells are replaced with a single MA102 Power tools are increasingly using brushless DC motors for efficiency and reliability. Traditionally, these motors have been commutated by placing three discrete Hall cells near the rotor magnet, but this requ...
ELECTRONIC SMART LOCKS
Electronic smart locks are increasing in popularity with the rise of IoT and smart homes, as they provide convenience and a sense of security to consumers. Because they are typically battery-powered, energy efficiency to maximize battery life is crucial. The nature of these devices means they must also offer ease-of-use, stable operation, and the ability to withstand wide temperature ranges and ex...
AIR PURIFIERS & HUMIDIFIERS
Air purifiers and humidifiers must be able to reliably improve air quality for end users. The best designs also offer improved energy efficiency, convenience, and low noise. As more and more appliances are expected to be smart-home ready, consumers are demanding new features such as wireless connectivity for ease of control. To meet and exceed customer expectations, designers are challenged with f...
Mobile points of service (POS) offer the same features as other portable POS devices from the convenience of a tablet or smartphone. POS are expected to deliver fast, secure payment transactions amid changing payment methods and rising customer expectations. They must offer high reliability, long battery life, ease-of-use, and quick processing speeds to accelerate checkout times. As retail and ser...
Ovens are a key household appliance, and one which consumers expect to be reliable, effective, convenient, and energy efficient. The rise of smart homes has added a new layer of design requirements to new generations of ovens, including durable and intuitive user interfaces, wireless connectivity, smart sensing, and predictive maintenance. IoT capabilities can help keep up with growing consumer ex...
MA800 FAMILY CONTACTLESS ANGLE SENSING INCREASES RELIABILITY IN ROTARY SWITCH APPLICATIONS
The mechanical potentiometers and switches used in most rotary user interfaces suffer from limited operating life and low reliability due to mechanical wear and susceptibility to environmental damage. This article discusses how magnetic contactless sensing can eliminate these issues and simultaneously provide additional benefits and features. Rotary knobs are used in a diversity of human-to-machi...
E-scooters have quickly risen in popularity in metropolitan areas and quickly growing cities. Lightweight, eco-friendly, and convenient, these e-scooters are two-wheeled battery-operated vehicles that integrate an electric motor and a controller that assists with increased propulsion. Of course, safety, performance, and cost are the greatest concerns for customers in any vehicle. In addition, new ...
USB WALL POWER OUTLETS
USB wall power outlets are becoming an increasingly common feature in smart homes and buildings. Being able to directly plug USB charging cables into wall outlets provides consumers with convenience and the ability to charge and power devices quickly. However, because this is a more direct form of power delivery, it is even more crucial that the power supply be reliable and safe, with the best pos...
Smart speakers are a growing market as end consumers expect more connectivity than ever in their day-to-day environments, and increasingly feature-rich devices available. Of course, any new speaker is expected to maintain exceptional audio quality, low standby power for extended playtime, and offer complete ease-of-use to the consumer. Smart speakers also integrate new features like voice command,...
HEADPHONES & EARBUDS
Headphones and earbuds are following the trend of other portable electronics adding more features and increased connectivity into smaller solution sizes. New headphone and earbud designs prioritize wireless connectivity and smart features, along with long battery life for maximum use time. Next-generation hearables are gaining mass market appeal offer exceptionally complex features, such as biosen...
PORTABLE MEDIA PLAYERS
Portable media players — such as DVD/Blu-Ray players, MP3 players, and more — are a popular market that requires high-quality audio and video playback combined with a convenient user interface. Consumers have come to expect long battery life, and a broad range of input and connectivity options as part of a satisfying portable media experience. Visual displays are trending toward increasingly high ...
IP NETWORK CAMERAS
IP network cameras are quickly gaining traction over traditional analog security camera networks. Most IP network cameras serve the same function as analog security cameras but do not require local storage capacity and are connected to a users LAN network. Because of this, they are a popular part of smart home systems and security. Ever-growing user expectations and increasing concern about both d...
Bluetooth and wireless speakers are a growing market as end consumers expect more connectivity than ever in their day-to-day environments.Of course, any new speaker is expected to maintain exceptional audio quality and long battery life for extended playtime, be highly portable,and offer complete ease-of-use to the consumer. Increasingly high demand for features like voice command,more audio sourc...
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