With the continuous improvement of chip technology, there can be over 10 billion transistors in a chip. How are so many transistors installed? 01 As chips are constantly magnified, they resemble a huge city. This is a top-down view SEM photo, which clearly shows the layered structure inside the CPU. The line widths become narrower … Read more
A learning note from an amateur SiC chip enthusiast. Literature organization, industry news, occasional insights, and imaginative thoughts. This public account is a personal learning note, solely for personal hobbies, without any commercial purpose. I apologize for any improper citations in the text. Some people enjoy gardening, singing, or fishing, while others like writing Twitter … Read more
1. MOSFET Driven Load 1.1 Definition A MOSFET driven load refers to a load that can be driven by components with switching functions such as switches, MOSFETs, or transistors. Common types include: (1) Resistive Load: Devices that generate heat through a resistive wire. (2) Inductive Load: Such as electromagnetic coils, solenoids, relays, solenoid valves, and … Read more
Today, we will discuss the “level shifting” circuit below, which is quite enjoyable to understand. Circuit design can actually be very interesting. First, let’s talk about the purpose of this circuit: when two MCUs operate at different working voltages (for example, MCU1 operates at 5V and MCU2 operates at 3.3V), how can MCU1 and MCU2 … Read more
Bu Zeng – Huawi: This week’s study began with single-ended amplifiers, categorized into common source, common gate, and common drain amplifiers. From the perspective of conduction angle, they are further divided intoA、AB、B、C、D、E and other amplifiers. Differential circuits can suppress common-mode noise while achieving larger swing, widely used in circuits. Degradation techniques are also widely applied … Read more
EG3525 and SG3525 are both widely used PWM control chips that support push-pull / half-bridge topologies, commonly used in switch-mode power supplies, inverters, DC/DC converters, and other scenarios. EG3525 is a compatible upgrade model of SG3525, which enhances certain performance aspects through technical optimization while maintaining pin and functional compatibility. Below is a core comparison … Read more
Digital Medium Transistor DACFET1. Introduction Many electrical appliances used in daily life are equipped with power electronic conversion circuits. These circuits can convert AC input from a power line into DC, and then convert the obtained DC and the DC provided by batteries back into AC (necessary for the normal operation of motors). They can … Read more
According to search results, in addition to onsemi, CREE (Wolfspeed), Microchip, and Navitas Semiconductor, the following brands are involved in the production or foundry cooperation of silicon carbide (SiC) devices within the United States. X-FAB serves as a SiC foundry in the U.S., catering to clients in the automotive, industrial, and energy sectors. Although some … Read more
Introduction AOS (Alpha & Omega Semiconductor) focuses on the research and production of power semiconductor products, including MOSFETs, IGBTs, power ICs, etc. It has made significant progress in the field of third-generation semiconductor materials, particularly in the development of silicon carbide (SiC) technology, which has now advanced to the third generation. SiC, as a wide … Read more
This solution utilizes a XuanZhi SPD1179 SoC and seven YaoXin Micro’s AKG4N058GM-A domestically produced automotive-grade MOSFETs to achieve full domestic chip production. One of the MOSFETs is used for reverse polarity protection, while the remaining six are configured to form three half-bridges. The system block diagram and PCBA photos are shown below. ▲ Block Diagram … Read more