消息
如何解决电源模块选型问题
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.
相关信息
-
2023-6-14
SM Series AC DC Power Supply: Efficient and Reliable Power Solution
The SM Series AC DC Power Supply is an efficient and reliable power solution that offers a range of benefits for industrial and commercial applications. With its advanced design and high-quality components, this power supply provides stable and consistent power to a wide range of devices and equipment. One of the key benefits of the SM Series AC DC Power Supply is its high efficiency. This power supply utilizes advanced switching technology to convert AC power to DC power with minimal energy loss. This means that the power supply can deliver maximum power to devices and equipment, while consuming less energy overall. This is particularly important for industrial and commercial applications where energy usage is a major concern. In addition...
查看详情 -
2023-10-20
Optimal Performance and Flexibility with the 1000W Modular Power Supply
The demand for high-performance and flexible power supplies has increased significantly in recent years. As technology continues to advance and power-hungry components become more prevalent, it is crucial for PC enthusiasts and professionals to invest in reliable and efficient power supplies. One such power supply that has gained popularity in the market is the 1000W Modular Power Supply. The 1000W Modular Power Supply offers optimal performance and flexibility for various computing needs. With a power output of 1000 watts, it can easily handle the power requirements of high-end gaming PCs, workstations, and servers. This power supply unit (PSU) is designed to deliver stable and clean power to the system, ensuring that all components receive an adequate and consistent power supply....
查看详情 -
2023-9-27
AC Power Supply Module: Ensuring Reliable and Efficient Electrical Power
Introduction: Electricity is the lifeblood that powers our homes, offices, and industries. To ensure the reliable and efficient delivery of electrical power, AC power supply modules play a vital role. These modules are designed to provide a stable and constant supply of power while minimizing losses and maximizing system performance. In this article, we will explore the importance of AC power supply modules and how they contribute to the overall reliability and efficiency of electrical power systems. The Importance of Reliable Power Supply: Reliable power supply is crucial for various applications, ranging from residential to industrial settings. Any interruption or fluctuation in power can lead to significant disruptions, financial losses, and even safety hazards. AC power supply modules are designed...
查看详情 -
2023-4-17
AC-DC converters are electronic devices that convert alternating current (AC) to direct current (DC). They are commonly used in power supplies for electronic devices, such as computers, televisions, and mobile phones. The converter changes the AC input voltage to a DC output voltage that can be used to power these devices. The AC-DC converter operates by rectifying the AC input voltage to a pulsating DC voltage. This is achieved using a rectifier, which is typically a diode bridge. The rectifier allows current to flow in only one direction, effectively converting the AC voltage to a series of positive and negative voltage pulses. After rectification, the DC voltage still contains some ripple, or fluctuations in voltage. To remove this ripple, a...
查看详情 -
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...
查看详情 -
2023-6-9
Unleashing the Power of Bidirectional Converters: Revolutionizing Language Translation in English
Language translation has been a crucial tool for communication and understanding in our globalized world. However, it is not without its challenges. One of the significant obstacles is the difficulty in accurately translating languages that are structurally different from each other, such as English and languages that use non-Latin scripts. In recent years, bidirectional converters have emerged as a game-changer in language translation, particularly in English. Bidirectional converters are computer programs that can convert text in one script to another script and vice versa. These converters have been developed to handle complex scripts such as Arabic, Hebrew, and Indic scripts, among others. They can accurately convert text while preserving the original meaning and tone of the message. The use of...
查看详情