News & Events

1. What is a TVS Tube?
 
TVS, or Transient Voltage Suppressor Diode, is a new type of highly efficient circuit protection device that plays a key role in preventing surge and overvoltage protection in electronic circuits. When the two ends of a TVS tube experience instantaneous high-energy impact, it can change the impedance between its terminals from high to low at extremely high speed (sub-nanosecond level), absorb a large instantaneous current, clamp the voltage across its terminals to a predetermined value, thereby protecting subsequent circuit components from transient...

In Boost circuits, selecting inductors requires considering the following key electrical parameters
 

Inductance value: According to the formula
 Calculate, where is input voltage, is output voltage, is diode forward voltage drop, is output current, and is switching frequency. Generally, larger inductance values result in better output voltage stability, but increase volume and cost2.
Current parameters:

Rated current: The inductor's rated current should be greater than the maximum continuous operating current in the circuit. It is generally recommended to select an inductor with a rated current 20%-30% larger than the circuit maximum current1.
Saturation...

In Buck circuits, selecting inductors requires considering the following multiple aspects:


Inductance value: According to the working principle and formula of Buck circuits

 

     
to calculate the required inductance value. Where is input voltage, is output voltage, is switching frequency, and is allowable inductor current ripple. Generally, larger inductance values can make output voltage ripple smaller, but will increase inductor size and cost, and may also reduce dynamic response speed; if inductance value is too small, it cannot effectively filter ripple, leading to unstable output voltage...

Skin effect in inductors refers to the phenomenon where when alternating current passes through an inductor element, the current concentrates on the surface of the inductor conductor, while the current density inside the conductor is smaller.
Principle of inductor skin effect
 

Electromagnetic induction effect: When alternating current passes through an inductor coil, it generates an alternating magnetic field inside and around the coil. According to Faraday's law of electromagnetic induction, this alternating magnetic field generates an induced electromotive force inside the inductor conductor, which in turn produces an induced current. Due to the larger rate of change of magnetic flux in the central part of the inductor, the induced electromotive force and induced current are also larger. These induced currents interact with the original current...

New Energy Vehicle Ethernet Protection

With the rapid advancement of new energy vehicle technology, traditional industrial Ethernet technology is also being widely used in the automotive industry. Automotive Ethernet provides the automotive industry with topology flexibility, high bandwidth, and anti-interference communication, making it an inevitable trend for the development of intelligent connected vehicles. In 2016, the IEEE standardized the automotive Ethernet system 100BASE-T1 and 1000BASE-T1 developed by the Ethernet Alliance Committee to meet specific requirements of automotive applications, especially in terms of electromagnetic interference (EMI) and electromagnetic compatibility (EMC).

TOLL (Transistor Outline Leadless) packaged MOSFETs have been widely used in terminal applications such as electric bicycles, electric motorcycles, lithium battery protection, and communication power supplies due to their compact size, low package resistance, low parasitic inductance, and low thermal resistance characteristics. TOLL (Transistor Outline Leadless) package is an advanced power device packaging technology with multiple notable features and advantages. The following is a detailed analysis of the TOLL package: I. Basic Features

 1. Introduction






"Automotive-grade" refers to specification standards that meet the specific requirements of the automotive industry for electronic components. These standards ensure that automotive electronic control systems can operate stably and reliably in complex and variable operating environments. In the automotive industry, the importance of automotive-grade components is self-evident, as they are directly related to vehicle performance, safety, and passenger driving experience. Due to the complex and variable operating environments of automobiles, such as extreme conditions like high temperature, low temperature, high humidity, vibration, etc.,

Electric Vehicle Battery Management System
The Battery Management System (BMS) of electric vehicles is a key component used in electric vehicles to monitor and manage battery system performance. It helps balance battery charge, prevent overcharging and over-discharging, thereby ensuring the safe, reliable, and efficient operation of lithium-ion batteries, while optimizing the overall efficiency and lifespan of the battery.
Electric vehicles...

Under the trend of automotive intelligence and electrification, the automotive-grade chip market shows huge growth potential. Currently, the entire automotive chip market has high requirements in safety, reliability, etc., but most chips in the automotive market are monopolized by foreign manufacturers. China is currently in a state of insufficient domestic substitution, low self-sufficiency rate, etc., urgently needing accelerated breakthroughs.
Chips can be divided into consumer chips, industrial chips, automotive chips, and military chips according to application scenarios.
Automotive chips, i.e., "automotive-grade chips", refer to integrated circuits that meet automotive quality management systems, reliability, and functional safety requirements. Automotive...