Drilling plays a crucial role in PCB design, facilitating electrical connections and component installation. Based on conductivity properties, holes can be classified into metallized and non-metallized holes, with metallized holes further divided into vias and component holes. These are the core structures for connecting interlayer circuits and supporting inserted components. During the prototyping phase, any … Read more
The general basic design process of a PCB is: Preparation –> PCB Structure Design –> PCB Layout –> Routing –> Routing Optimization and Silk Screen –> Network and DRC Check and Structural Check –> Fabrication. Today, we will explore the knowledge of “Preparation”. Preparation This includes preparing the component library and schematic. “To do a … Read more
1. Manual Routing Whenever Possible Generally speaking, most PCB design software includes an auto-routing feature, but in reality, no auto-router can completely replace the skills, experience, and flexibility of a PCB Layout Engineer. (Kudos to manual PCB Layout Engineers) In some cases, you can use auto-routing: After placing all components, you can use auto-routing to … Read more
Drop testing is a critical step in assessing the mechanical reliability of a product, and its reliability is largely determined during the PCB design and manufacturing stages. The success or failure of drop testing is related to PCB design, PCB manufacturing, and PCBA operations, and this article will elaborate on these three aspects. ★ PCBA … Read more
This article will introduce how to desolder Flash chips, design and create corresponding breakout boards. It covers simple and effective attack methods on the non-volatile storage of embedded devices. These attacks include: Reading the contents of the storage chip Modifying the contents of the chip Monitoring read operations on the storage chip and modifying remotely … Read more
In the field of embedded hardware design, the DDR power circuit serves as the core power supply unit, and its design quality directly affects chip performance and long-term device stability. The RK3588, as a high-performance processor, has stringent requirements for the layout, routing, and component selection of the VCC_DDR power circuit. This article combines official … Read more
When starting a new design, we often spend most of our time on circuit design and component selection, and during the PCB layout and routing phase, we may overlook important considerations due to lack of experience.If sufficient time and effort are not allocated to the PCB layout and routing phase, it may lead to issues … Read more
MIPI (Mobile Industry Processor Interface) is a standard defined for mobile devices such as smartphones, tablets, laptops, and hybrid devices. Its commonly used physical (PHY) layers are MIPI D-PHY and C-PHY. MIPI D-PHY: It is more commonly used in smartphone cameras and displays due to its flexibility, high speed, low power consumption, and low cost. … Read more
As a hardware engineer, have you ever experienced the scenario where outsiders enviously say, “Your job of designing boards is so cool,” and you can only respond with a wry smile? Or when a project is delayed, your software colleagues question, “Isn’t your hardware design already completed?” In fact, schematic and PCB design is just … Read more
1. Power Connector Design Standards Electrical Clearance and Creepage Distance The electrical clearance between the power and protective ground (PGND) should be ≥2mm, and the creepage distance should be ≥2mm (before the fuse) or ≥1.4mm (after the fuse). The distance between PGND and other signals (such as GND, low-speed signals) should be ≥2mm, and the … Read more