ニュース
パワーモジュール選択の問題を解決する方法
著者： ZYGパワーモジュール Time： 2022-12-20
It is not easy to select a power module. There are many difficulties to consider. How much do you know?
Magnetic beads, capacitors, diodes, resistors… all have similar inside stories, but people don’t pay much attention to them. There are various topologies of power modules, such as flyback, forward, push-pull, half-bridge, and full-bridge. Due to their different basic principles, each of them is mainly manifested in the advantages at the level of certain characteristic indicators.
The flyback power supply does not have a time period for charging and discharging the battery during the power switch period. That is because there is no time characteristic of the response characteristic, and the grain baud cannot be guaranteed to be very good, although it may not help much according to the energy storage capacitor , but the rationale is just a flaw.
Leakage inductance is also a big problem, but its advantages are simple power supply circuit, low cost, light weight, no need to add magnetic calibration windings, and a wider operating voltage range for typing. Because of this, its share of the total power supply sales market is about 7%.
The output voltage of the positive power supply has good transient operation characteristics and strong load capacity, but its disadvantages are also obvious. The large energy storage technology is used to filter the inductor and the freewheeling diode, which is large in size, and the back electromotive force of the primary coil of the transformer is high. .
The push-pull power supply has high transient response time, good working voltage and frequency characteristics. It is the most utilized power transformer of all topologies. No flux leakage, simple optocoupler circuit.
If the two forward converters are not completely symmetrical or balanced, the bias magnetism accumulated after many cycles will cause the magnetic core to enter a saturated state, resulting in excessive excitation current of the high-frequency transformer, and even damage the power switch tube.
The accumulative chainless power supply transformer has a large power and high working efficiency, the withstand voltage test value of the power switch tube is relatively low, and the primary coil of the transformer only needs to be wound once. The disadvantage is that the efficiency is low, there is a semiconductor area, and the consumption is large.
The above problems are all caused by the inherent advantages and disadvantages of its topology. Although people can use the power module as the black box of the aircraft, this is also a point that needs to be paid attention to when choosing a power supply.
前： パワーモジュールの選び方と注意点、それぞれがとても重要
次： The Importance of Quality Control in China DC-DC Converter Manufacturing
関連情報
-
2023-7-9
Introducing the Advanced DC DC Converter EX Series
In the ever-evolving world of electronics, the demand for efficient power conversion solutions continues to rise. Companies are constantly looking for advanced technologies that can provide reliable and high-performance power conversion in a compact form factor. And that is where the Advanced DC DC Converter EX Series comes in. The Advanced DC DC Converter EX Series is a groundbreaking lineup of power converters designed to meet the diverse needs of various industries. With cutting-edge technology and innovative design, this series offers unparalleled performance and flexibility. One of the key features of the Advanced DC DC Converter EX Series is its high efficiency. These converters boast an efficiency of up to 95%, ensuring minimal power loss and maximum energy utilization. This...
詳細を見る -
2023-11-25
Module Power Supply: Ensuring Efficient and Reliable Energy Delivery
In today's technologically advanced world, the demand for power supply systems is increasing. From homes to industries, the need for efficient and reliable energy delivery is crucial. One such system that plays a vital role in fulfilling this demand is the module power supply. A module power supply is a compact and versatile device that converts electrical energy from a source into a suitable form for various electronic devices. It provides a regulated output voltage, ensuring a stable and consistent power supply to the connected equipment. With its wide range of applications, module power supplies are widely used in industries such as telecommunications, data centers, manufacturing, and medical equipment. Efficiency is a key factor when it comes to power supply...
詳細を見る -
2023-5-4
AC-DC Power Supply: The Ultimate Solution for Reliable Energy Conversion
AC-DC power supply is a type of power supply that converts AC (alternating current) power from the mains into DC (direct current) power that can be used by electronic devices. It is an essential component in most electronic devices, ranging from household appliances to medical equipment. One of the main advantages of an AC-DC power supply is its reliability. It is designed to provide a stable and consistent output voltage, which is essential for the proper functioning of electronic devices. This makes it a popular choice for critical applications where power interruptions can result in significant consequences, such as in medical equipment or industrial control systems. Another advantage of an AC-DC power supply is its efficiency. It is designed to...
詳細を見る -
2023-7-11
AC-DC Power Supply: Providing Efficient and Reliable Electricity Conversion
In today's modern world, electricity is an essential part of our daily lives. It powers our homes, offices, and industries, providing us with the energy we need to carry out various activities. However, the electricity we receive is not always in the form that we can use directly. This is where AC-DC power supplies come into play. They play a crucial role in converting the alternating current (AC) we receive from the power grid into direct current (DC) that is suitable for powering electronic devices. An AC-DC power supply is a device that takes in AC power and converts it into DC power with the desired voltage and current levels. It is commonly used in various applications, ranging from small...
詳細を見る -
2023-11-13
Benefits of a Modular PC Power Supply for Enhanced Performance and Flexibility
In today's fast-paced technological world, having a high-performance and flexible PC is essential for various tasks, including gaming, graphic design, and content creation. The power supply unit (PSU) is a critical component of any computer system as it supplies power to all the other hardware components. One type of PSU that has gained popularity in recent years is the modular PC power supply. This article will explore the benefits of using a modular power supply for enhanced performance and flexibility. First and foremost, a modular power supply offers improved cable management. Traditional power supplies come with a fixed set of cables that are permanently attached. This can result in a cluttered and messy interior, making it challenging to maintain proper...
詳細を見る -
2023-6-19
AC to DC Converter Module – 12V Output
Introduction The AC to DC Converter Module is an electronic device used to convert alternating current (AC) to direct current (DC). This module is designed to provide a 12V output that can be used for various purposes. In this article, we will discuss the working principle, applications, and benefits of this module. Working Principle The AC to DC Converter Module consists of a step-down transformer, a rectifier, and a filter capacitor. The AC voltage is first stepped down by the transformer and then rectified by the diodes in the rectifier. The rectified voltage is then filtered by the capacitor to remove any ripples and provide a smooth DC output. The output voltage can be adjusted by changing the turns ratio...
詳細を見る