❗ The Problem: Heat Buildup & Power Loss

If your MOSFET gets hot even when it’s properly rated for current, switching loss might be the culprit. This happens during the brief moment when voltage and current overlap as the MOSFET transitions between ON and OFF states.

🛠️ The Solution: Choose the Right Gate Drive & MOSFET

Fix this by:

• Selecting a low gate charge (Qg) MOSFET

• Using a strong gate driver to switch it faster

Faster switching reduces the overlap time, minimizing power loss and heating.

🧪 Practical Example + Calculation

Let’s say your MOSFET switches at 100kHz, with Vds = 12V, Id = 5A, rise time (tr) = 50ns, fall time (tf) = 50ns.

Switching Loss (P) ≈ 0.5 × V × I × (tr + tf) × f
= 0.5 × 12 × 5 × (100e-9) × 100,000 = 0.3W

Multiply that by 2–3 if both rise and fall events happen every cycle!

🛒 Product Suggestion: Made in India, Built to Last

🔌 MOSFET Modules (low Qg, ideal for switching):

⚡ Gate Driver Modules for high-speed control:

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