Custom Magnetics, Engineered for Excellence.
At Weihai Jinfei, we specialize in custom modifications and designs that give your products an edge.
Blog
Contact us now!
Need help? We’re here for you anytime!
Phone
What Limits The Miniaturization Of The Power Supply Module
Release time:
2022-03-22
Source:
With the development of power modules, engineers have focused on how to make modules smaller and lighter. In fact, we all know that we can increase the power density of products by increasing the switching frequency. But why has the volume of the module so far not changed so much? What limits the increase in switching frequency?
With the development of power modules, engineers have focused on how to make modules smaller and lighter. In fact, we all know that we can increase the power density of products by increasing the switching frequency. But why has the volume of the module so far not changed so much? What limits the increase in switching frequency?
In order to meet the current portable electronic terminal equipment, the switching power supply must be smaller, lighter, high-efficiency and low-radiation. However, there are mainly three factors restricting the frequency of switching power supplies: switch tubes, transformers, and EMI and PCB design.
1.Switching tube as the core device of switching power supply module, its switching speed and switching loss directly affect the limit of the switching frequency.
2.Transformer iron loss is proportional to the kf power of the switching frequency, and it is related to the limitation of the magnetic temperature. Therefore, as the switching frequency increases, high-frequency currents flow in the coil and cause severe high-frequency effects, which reduces the transformer's conversion. Efficiency causes the transformer temperature to
rise, thereby limiting the switching frequency.
3.At high frequencies, the inductor is no longer the inductor we are familiar with. The capacitor is not a capacitor that we already know. All parasitic parameters will have corresponding parasitic effects, which wilI seriously affect the performance of the power supply, such as the parasitic capacitance of the primary side of the transformer, and the transformer. Leakage inductance, parasitic inductance and parasitic capacitance between PCB layouts can cause a series of voltage and current
waveform oscillations and EMI problems, and it is also a test for the voltage stress of the switch tube.
To increase the power density of switching power supply products, the first consideration is to increase the switching frequency, which can effectively reduce the volume of transformers, filter inductors, and capacitors.
As electronic transformer manufacturer, we have been producing and designing various high frequency flyback transformers, current transformers, coil inductors. We also OEM some filters such as EMI filter used for AC power line. Our goal is to increase the efficiency of electronic transformers and provide customers with high quality electronic components.\
For more information, please contact us at info@jinfei-transformer.com.
More information
Why We Use Switching Power Supply Transformers
Electronic transformer is a component that can convert voltage, but the difference between a switching power transformer and other electrical transformer is that it has an additional switching tube, so that a self-excited intermittent oscillator is formed.
What Limits The Miniaturization Of The Power Supply Module
With the development of power modules, engineers have focused on how to make modules smaller and lighter. In fact, we all know that we can increase the power density of products by increasing the switching frequency. But why has the volume of the module so far not changed so much? What limits the increase in switching frequency?
World's first multilayer band-pass filter for millimeter wave bands in 5G networks TDK Corporation (TSE:6762) has expanded its lineup of high frequency multilayer products with the world's first* multilayer band-pass filter for the 28GHz band in 5G mobile communication networks.
The World's First 6G Experimental Satellite Was Launched Successfully
5G has not been completed yet, and the world's first 6G experimental satellite has been launched! According to relevant reports, the satellite launched is named "University of Electronic Science and Technology of China", which is the first satellite named after the university since its establishment.
How to reduce the interference of the power transformer on the audio power amplifier circuit
The Power Transformer can interfere with the amplifier through magnetic fields, electromagnetic induction and circuits, and is the largest source of interference in audio machines. Therefore, in order to properly handle its working state and application environment, the interference generated by the power transformer can be effectively avoided, and the amplifier can obtain excellent sound effects. I will discuss this with you below.
How to choose the transformer capacity？
Transformer selection cannot be large or small. You have to choose the capacity of the transformer, as well as the use situations. So Let's take a look at how to choose a suitable transformer capacity.
How Are Magnets Used to Generate Electricity?
The Difference Between a Turbine & a Generator When a conductor is placed in a changing magnetic field, the electrons in the conductor move, generating an electric current. Magnets produce such magnetic fields and can be used in various configurations to generate electricity.
EEL16 Type High Frequency High Voltage Transformer
High voltage transformer is a common electronic device for electronic products. It is used to convert low frequency and low voltage to low frequency and high voltage electromagnetic induction equipment.
Tel:
Email：
info@jinfei-transformer.com