An annular ring refers to the area of copper that surrounds the drilled hole (via) in a PCB. In multi-layer PCBs, vias are essential for connecting various layers. The annular ring ensures strong electrical conductivity between these layers, as it provides the necessary copper coverage around the hole.
The introduction of phenolic resin-based laminates in the 1930s improved mechanical stability and insulation. However, the game-changer was the development of glass-reinforced epoxy laminates (FR-4) in 1940, offering superior electrical insulation, moisture resistance, and mechanical durability.
Motor driver ICs handle high currents and dissipate substantial heat, so efficient PCB design is essential to ensure proper heat dissipation and reliable performance. Below are some best practices for designing a robust PCB for motor driver ICs.
A motor controller is an electronic or electrical device used to regulate the speed, torque, and position of a motor. It can automatically or manually start, stop, and protect the motor from issues like overloads.
Impedance line routing in multi-layer PCBs is both an art and a science. Adhering to the principles of short lines, symmetry, equal length, and precise compensation ensures high-speed data transmission and robust device performance. By leveraging tools like the Polar Si9000 and applying best practices in design, engineers can effectively address challenges in modern PCB impedance routing.
With the rise of high-speed DSPs (Digital Signal Processors) and peripherals, managing Electromagnetic Interference (EMI) has become a crucial aspect of design. In the past, issues of emission and interference were broadly referred to as EMI or RFI (Radio Frequency Interference). Today, these are part of a more nuanced area: Electromagnetic Compatibility (EMC), which encompasses both emission control and system immunity.
In PCB design, effective ESD (Electrostatic Discharge) protection can be achieved through strategic layering, layout, and installation adjustments. ESD protection aims to shield delicate semiconductor chips from static electricity originating from humans, the environment, or even other electronic components, which can damage insulation layers, MOSFET and CMOS gates, PN junctions, and wiring. Here are some recommended techniques to enhance ESD protection in PCB designs.
As electronic products become more advanced, they encounter more sources of electromagnetic interference (EMI) that can disrupt device function and potentially harm health. This guide explores strategies for designing PCB boards with optimized electromagnetic compatibility (EMC), focusing on reducing interference and increasing product resilience.
Electrostatic Discharge (ESD) can damage sensitive components such as MOSFETs, CMOS gates, and PN junctions, leading to issues like gate damage, short circuits, and even melted wiring. This guide offers practical strategies to design PCBs that effectively prevent ESD from harming the circuit.
PCB design translates electrical schematics into a functional product, and its quality directly impacts production efficiency and product reliability. For beginners, mastering PCB layout can be challenging despite familiarity with design software, and common issues often arise. Here, seasoned engineers from KKPCB share their PCB layout insights to help avoid these pitfalls and inspire best practices.