nyheder
How to solve the problem of power module selection
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.
Tidligere: How to choose a power module and precautions, each is very important
Næste: Vigtigheden af kvalitetskontrol i Kina DC-DC Converter Manufacturing
relevant information
-
2023-6-20
120V AC to 12V DC Converter: Transforming Voltage for Efficient Power Supply
The 120V AC to 12V DC converter is a device used to transform voltage from alternating current (AC) to direct current (DC). This converter is commonly used in various electronic applications that require efficient power supply. The process of transforming voltage from AC to DC is important because many electronic devices, such as mobile phones, laptops, and televisions, use DC voltage as their power source. AC voltage is the voltage supply that comes from the wall outlet while DC voltage is the voltage that powers most electronic devices. The 120V AC to 12V DC converter is a crucial device in the world of electronics as it plays a vital role in the proper functioning of electronic devices. This device is...
Se detaljer -
2022-5-5
Introduktion af Kina Fremstillere af små strømmoduler
Når vi vælger et strømmodul, ser vi generelt på kvaliteten af input, output, krusning, sammenbrud, temperatur, certificering og andre egenskaber ved strømforsyningen. Ud over disse kan vi også bedømme efter følgende punkter. 1. Kredsløbsprincip og loddeproces Det blotte bræt kan bruge intuitive metoder, såsom et pænt layout af komponenter og indstøbningsmoduler uden at være eksponeret og ude af stand til at se den interne situation. Kvaliteten af den mekaniserede bølgeloddeproces er bedre end manuel lodning, generøs, men bedre med hensyn til sikkerhed og ydeevne 2. Kernen i strømforsyningen til chipkomponenter og transformerkomponenter er IC, som direkte vil påvirke effekten og høj- temperaturmodstand af...
Se detaljer -
2023-11-20
DC to DC Power Supply Module: Efficient and Reliable Energy Conversion Solution
Introduction: In today's fast-paced, technology-driven world, efficient and reliable energy conversion is crucial for the optimal performance of various electronic devices. DC to DC power supply modules play a vital role in converting direct current (DC) from one voltage level to another, ensuring a continuous and stable power supply to meet the specific requirements of different applications. This article will explore the features, benefits, and applications of DC to DC power supply modules as an efficient and reliable energy conversion solution. Features of DC to DC Power Supply Modules: DC to DC power supply modules offer several key features that make them an attractive choice for energy conversion: 1. Wide Input Voltage Range: These modules support a wide range of...
Se detaljer -
2023-7-17
China AC-DC Power Supply wholesale: Ensuring Reliable and Efficient Electrical Energy Conversion
Introduction: In today's modern world, the demand for electrical energy is ever-increasing. From powering our homes to fueling industries, electricity plays a crucial role in our daily lives. However, the electricity generated and transmitted is in the form of alternating current (AC), whereas most devices require direct current (DC) to operate. This necessitates the need for AC-DC power supplies, which convert AC to DC, ensuring reliable and efficient electrical energy conversion. In this article, we will explore the importance of AC-DC power supplies and their role in meeting our energy requirements. Understanding AC and DC: To comprehend the significance of AC-DC power supplies, one must first understand the difference between AC and DC. Alternating current (AC) is the type of...
Se detaljer -
2023-5-29
SPM Series AC-DC Converter: Efficient Power Conversion for Your Applications
When it comes to powering electronic devices, the importance of efficient power conversion cannot be overstated. An efficient power converter can not only save energy but also increase the lifespan of the device by preventing it from overheating. The SPM Series AC-DC Converter is a reliable solution for a wide range of applications that require efficient power conversion. Overview of SPM Series AC-DC Converter The SPM Series AC-DC Converter is a high-performance power supply that is designed to convert AC input voltage into a regulated DC output voltage. The converter is available in a wide variety of input and output configurations, making it suitable for a broad range of applications. With its high efficiency and low standby power consumption, the...
Se detaljer -
2023-6-21
DP Series DC-DC Converter: The Ultimate Solution for Reliable Power Conversion
Power conversion is a critical process for various electronic devices, ranging from simple battery-operated gadgets to complex industrial systems. The traditional approach to power conversion involved the use of linear regulators, which were simple and affordable but suffered from low efficiency and limited input voltage range. Today, the market is flooded with advanced power conversion solutions, including DC-DC converters that offer high efficiency, wide input voltage range, and various control features. Among these, the DP series DC-DC converter stands out as a reliable, high-performance solution for a wide range of applications. The DP series DC-DC converter is a product of MORNSUN, a leading manufacturer of power electronics solutions. The company has over two decades of experience in designing and producing...
Se detaljer