MP6500

Stepper motors are often used for positioning since they are cost-effective, easy to drive, and can be used in open-loop systems — meaning that they do not require position feedback like servo motors. Steppers are used in small industrial machines, such as laser engravers, 3D printers, and office equipment like laser printers. There is a wide array of options when it comes to stepper motors. For ...

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...

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...

In this article, we will cover the basics of stepper motors. You will learn about the working principles, construction, control methods, uses, and types of stepper motors, as well as its advantages and disadvantages. A stepper motor is an electric motor whose main feature is that its shaft rotates by performing steps, that is, by moving by a fixed amount of degrees. This feature is obtained tha...

Although there are various power supply types, this article will focus on Power over Ethernet (PoE) power supplies. In particular, PoE power supplies where the power sourcing equipment (PSE) supplies power to the powered device (PD) terminal equipment through the network cable. Figure 1 shows common PoE power supply equipment, including the PoE switch as well as power-receiving equipment (e.g. wir...

Reliable and affordable energy sources are required to power the economy and meet daily needs. Without these energy sources, economic growth and development stalls. Dependence on foreign sources for energy can also lead to vulnerability to geopolitical conflicts. With ongoing concerns regarding climate change, ensuring energy security has environmental implications as well, with efforts to increas...

When designing a motor control circuit, it is vital to determine how to deliver the high current required to drive the motor. Designers must choose whether to use monolithic integrated circuits that have internal power devices, or gate driver ICs and discrete external power MOSFETs. This article discusses the advantages and disadvantages of each approach and provides guidance on when to choose eit...

Modern devices are increasingly powered by Power over Ethernet (PoE), such as IP phones, wireless APs, and IP cameras. Customer premise equipment (CPE) and small base stations in the 5G era also require PoE power. Figure 1 shows common applications powered by PoE. This article discusses MPS’s comprehensive suite of power management solutions for a wide range of switches, including PSE, boo...

Power failures tend to cause a domino effect of disruptions, resulting in system failures and data loss, as well as damage to servers and equipment. This article describes how to use the MP5515 to protect solid-state drives (SSDs) against sudden power failure. There are three main issues if an SSD experiences a power failure: The MP5515 is an input power conditioning PMIC that provides a compact...

Power over Ethernet (PoE) is a power supply scheme that uses a network cable to transmit power. This scheme includes power sourcing equipment (PSE), a powered device (PD), and a network cable. With the popularity of IP device applications, PoE has become widespread among users due to its low installation costs, scalability, ease of management, and global compatibility. After over a decade since t...