PCB layout tips for MOSFET circuits: reduce noise, EMI, heat, and boost reliability easily.
PCB Layout Best Practices for MOSFET Circuits
Designing an efficient MOSFET circuit doesn’t end with selecting the right device. Even the best MOSFET will underperform — or worse, fail — if your PCB layout is poorly designed. High-frequency switching, large currents, and voltage spikes can create parasitic inductance, excessive heat, EMI, and noise that affect your whole system. This comprehensive guide covers:
✅ Why PCB layout matters so much for MOSFETs
✅ Key layout principles for power and signal integrity
✅ Examples of good vs. bad layouts
✅ Common mistakes to avoid
✅ Frequently asked questions (FAQs) ✅ Why PCB Layout Matters for MOSFET Circuits MOSFETs are widely used in power electronics: DC-DC converters, motor drivers, battery protection, and switching regulators. When switching large currents at high frequencies, even a few millimeters of trace can act like an inductor. Problems that arise from poor layout include: Excessive voltage overshoot (ringing) High switching losses EMI and radiated noise Thermal hotspots and uneven heat…
About the author
Prasun Barua is a graduate engineer in Electrical and Electronic Engineering with a passion for simplifying complex technical concepts for learners and professionals alike. He has authored numerous highly regarded books covering a wide range of elec…
