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LM3100
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Presentation (pdf 402KB)
Video Descriptions
This presentation is designed to help a switching power supply engineer design a PCB that gives the best performance of their power supply while minimizing conducted and radiated electromagnetic interference (EMI). The presentation begins by identifying the types of EMI and classifying them according to how prevalent they are and how to deal with them. The second, main part of the presentation is a collection of tips and techniques that are presented during a walk-through of the design of a buck switching regulator PCB.
Topics covered in this online seminar include:
- Self inductance influences impedance
- Noise Coupling Mechanisms
- Locating the high di/dt loops
- 'Ground rules'
- Copper Requirements For High Current Paths
- Component Placement Strategy
- Gate Drive Layout Requirements
- Power FETs and Decoupling
- Switch Node design
- Output Capacitors
- Control Circuit Consideration
- Noise considerations
- Thermal Considerations
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