Another colleague has encountered a problem. After receiving the prototype circuit board, they found that the Ethernet could not be pinged at all. While helping to check the circuit, I discovered a detail that 99% of people overlook: đ§ The most feared thing when designing a PCB is this “Schrödinger’s Pin” â the center tap … Read more
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Author Author Stephen V.Chavez Responsible for technical product marketing at Siemens EDA and serves as the chairman of the PCEA association. The core of successfully delivering manufacturable PCB designs relies on a critical question: What should the design data output package include to best support manufacturing? The answer is: It depends on the specific PCB … Read more
If you have ever done PCB design, you must have encountered these scenariosâsmooth routing for BGA, yet experiencing packet loss in high-speed links during testing; multilayer boards warping after production; and a significant drop in yield during soldering… Many times, these issues are not due to the chip or the board manufacturer’s process, but rather … Read more
Safety Distance Requirements This includes electrical clearance (air gap), creepage distance (surface distance), and insulation penetration distance. 1. Electrical clearance: The shortest distance measured along the air between two adjacent conductors or between a conductor and the surface of an adjacent motor casing. 2. Creepage distance: The shortest distance measured along the insulating surface between … Read more
SoftwareIntroduction Proteus is an electronic design automation (EDA) software that integrates circuit simulation, PCB design, and microcontroller debugging, widely used in embedded system development, electronic education, and industrial design. Below is its related introduction: Features ă» Mixed-mode circuit simulation: Supports co-simulation of analog/digital circuits, integrates virtual instruments (such as logic analyzers and voltage probes), and … Read more
Today, we mainly discuss: improvements in switch mode power supply design. 1. PCB Coupling Engineers typically pay close attention to two coupling factors in SMPS layout, as shown in the figure below: Voltage switching node, which has high dv/dt Thermal current loop, which contains the highest di/dt in the subsystem Diagram showing the di/dt and … Read more
PCB-Level Thermal Design (Part 2) Recently, I have been busy with work and haven’t updated for a long time. Let’s continue with the design concepts of PCB thermal design. This issue mainly focuses on transient thermal resistance, which is an easily overlooked parameter. When estimating the junction temperature of power devices, thermal resistance is used, … Read more
Hello everyone, I am Engineer Ning! A serious frontline developer dedicated to solving any confusion regarding PCBs! Brothers, I haven’t run away. Today, I will document some insights on flexible boards. Considerations for Circuit Design: 1. Use arc routing to reduce stress caused by bending. Avoid using 45-degree angles. 2. At the corners of the … Read more
PCB-Level Thermal Design (Part 1) All electronic products contain semiconductor devices, capacitors, and other components that are susceptible to thermal acceleration failure mechanisms. Thermal design is crucial for improving the reliability of any design. However, thermal design can be very challenging due to the complex geometries involved in fluid dynamics mathematical analysis. Below, we will … Read more