nuus
Hoe om die probleem van kragmodule seleksie op te los
Author： ZYG Power Module 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.
vorige: Hoe om 'n kragmodule te kies en voorsorgmaatreëls, elkeen is baie belangrik
volgende: The Importance of Quality Control in China DC-DC Converter Manufacturing
relevante inligting
-
2023-7-23
Exploring the Applications and Advantages of Bidirectional DC-DC Converters
Introduction Bidirectional DC-DC converters have gained significant attention in recent years due to their versatile applications and advantages. These converters are capable of transferring power bidirectionally between two DC sources or systems with different voltage levels. In this article, we will explore the various applications and advantages of bidirectional DC-DC converters. Applications of Bidirectional DC-DC Converters 1. Electric Vehicles (EVs) One of the most significant applications of bidirectional DC-DC converters is in electric vehicle systems. These converters play a crucial role in managing the power flow between the vehicle\'s battery pack and the electrical grid. During charging, the bidirectional converter allows power to flow from the grid to the battery pack efficiently, enabling fast and controlled charging. On the other...
Sien besonderhede -
2023-6-9
Car AC-DC Converter: Power Your Devices Anywhere You Go!
As technology becomes an increasingly integral part of our lives, the need for power sources has never been more pressing. Whether it's charging a smartphone, powering a laptop, or running a mini fridge, we rely on electricity to keep our devices going. While we may have access to power outlets at home or in the office, staying connected while on the go can be a challenge. That's why a car AC-DC converter is becoming an essential accessory for anyone who values their mobile devices. So, what is a car AC-DC converter? Simply put, it's a device that allows you to plug your electronic devices into a car's power outlet, also known as a cigarette lighter socket. This outlet typically provides...
Sien besonderhede -
2023-7-2
AC-DC Power Supply: Bridging the Gap Between Alternating and Direct Current
Introduction In the world of electrical engineering, power supply plays a crucial role in ensuring the smooth functioning of various electronic devices. One such power supply that bridges the gap between alternating current (AC) and direct current (DC) is the AC-DC power supply. This article aims to provide an in-depth understanding of AC-DC power supply, its working principle, and its applications in different industries. Working Principle of AC-DC Power Supply AC-DC power supply converts the input AC voltage into a DC voltage suitable for electronic devices. The conversion involves three stages: rectification, filtering, and voltage regulation. The first stage, rectification, is achieved using diodes. Diodes allow the flow of current in one direction and block it in the opposite direction....
Sien besonderhede -
2023-6-22
SM Series AC DC Power Supply: Reliable and Efficient Solution for Your Power Needs
In today's era of technology, power supply plays a crucial role in the smooth functioning of any electronic device. Be it a simple handheld device or an industrial machine, the power supply should be reliable, efficient, and safe. The SM series AC DC power supply is one such solution that has been designed to cater to the power needs of various applications. The SM series AC DC power supply is manufactured by a renowned company that specializes in power electronics solutions. This power supply is designed to provide a stable and reliable source of power to devices in various applications. It has a wide input voltage range which makes it suitable for use in different countries and regions. The output...
Sien besonderhede -
2023-10-20
Introduction to DC-DC Power Supply Modules: Advancements in Power Distribution Technology
Power supply modules play a crucial role in various electronic devices and systems by converting one form of electrical energy into another. Among the different types of power supply modules, the DC-DC power supply module is a notable advancement in power distribution technology. This article aims to provide an overview of DC-DC power supply modules, discussing their working principles, advantages, applications, and recent advancements. Working Principles of DC-DC Power Supply Modules DC-DC power supply modules are designed to convert a direct current (DC) voltage from one level to another. This conversion is achieved by using switching techniques, such as pulse width modulation (PWM) or pulse frequency modulation (PFM), along with various topologies, including buck, boost, buck-boost, and isolated modules. These...
Sien besonderhede -
2023-7-10
12V AC to DC Converter Module: Effortlessly Convert Alternating Current to Direct Current
Introduction In today's world, electrical devices and appliances have become an integral part of our lives. However, the electricity that is supplied to our homes is in the form of alternating current (AC), while most electronic devices require direct current (DC) to function. This necessitates the need for a reliable and efficient AC to DC converter module. One such module is the 12V AC to DC Converter Module, which effortlessly converts AC to DC, ensuring seamless functionality of various electronic devices. Understanding Alternating Current (AC) and Direct Current (DC) Alternating current is the flow of electric charge that periodically reverses direction. It is the form in which electricity is delivered to homes and businesses. On the other hand, direct current...
Sien besonderhede