Power Supply Decoupling: Essential Design Best Practices
Power Supply Decoupling and Layout Considerations
Learn how to optimize power supply performance through strategic decoupling capacitor placement, component selection, and PCB layout techniques. Master the art of minimizing AC voltage ripples and noise in IC applications.
Power supply decoupling is crucial for maintaining IC performance by minimizing AC voltage ripples and noise. The application note details how to implement effective power filtering using a combination of decoupling capacitors and ferrite beads, with specific focus on component selection and placement strategies.
The document provides comprehensive guidance on implementing local power planes for multi-pin ICs, selecting appropriate capacitor values for different frequency ranges, and optimizing PCB layout for minimal inductance. Special attention is given to the placement and routing considerations for both single and multiple power pin configurations.
Download this white paper to learn about:
- Fundamental principles of power supply decoupling and PSRR (Power Supply Rejection Ratio)
- Strategic implementation of multi-capacitor filtering solutions with specific component value selection
- Component selection criteria for capacitors and ferrite beads, including ESR and ESL considerations
- PCB layout optimization techniques and detailed routing guidelines