The switching of active devices on printed circuit boards (PCBs) can cause a momentary surge or drop in the power bus voltage. Decoupling capacitors are often utilized to alleviate this problem. They help to stabilize the power bus voltage by supplying transient current to active devices. The decoupling strategy, including where to place the high-frequency decoupling capacitors, is often a topic of debate. This paper examines the effect of decoupling capacitor placement on a 4-layer printed circuit board. Some design guidelines are provided.
J. Chen et al., "Experimental Evaluation of Power Bus Decoupling on a 4-Layer Printed Circuit Board," Proceedings of the IEEE International Symposium on Electromagnetic Compatibility (2000, Washington, D.C.), vol. 1, pp. 335-338, Institute of Electrical and Electronics Engineers (IEEE), Aug 2000.
The definitive version is available at http://dx.doi.org/10.1109/ISEMC.2000.875588
IEEE International Symposium on Electromagnetic Compatibility (2000: Aug. 21-25, Washington, DC)
Electrical and Computer Engineering
Electromagnetic Compatibility (EMC) Laboratory
Keywords and Phrases
4-Layer Printed Circuit Board; PCB; Active Devices; Active Networks; Busbars; Capacitors; Decoupling Capacitor Placement; Decoupling Capacitors; Design Guidelines; Electromagnetic Coupling; High-Frequency Decoupling Capacitors; Power Bus Decoupling; Power Bus Voltage; Printed Circuit Layout; Surge; Transient Analysis; Transient Current; Decoupling Capacitors; Printed Circuit Boards
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Article - Conference proceedings
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