Protecting Your SMPS from Voltage Spikes—The Easy Way
⚠️ The Problem :
Switch Mode Power Supplies (SMPS) are highly efficient but sensitive to voltage spikes, especially during power surges or load switching. These spikes can damage components or cause unstable operation in your electronics projects.
✅ The Solution :
To protect your SMPS and connected devices, use TVS diodes or MOVs (Metal Oxide Varistors) across the input terminals. These components clamp high voltage spikes, keeping your circuit safe.
🧪 Practical Example :
Imagine you’re powering a microcontroller-based project through a 12V SMPS. When you switch a motor on/off, you notice occasional resets—classic symptom of voltage spikes. Adding a TVS diode rated for 15V instantly stabilizes the circuit, preventing microcontroller brownouts.
🧮 Sample Calculation :
If your SMPS is rated for 12V, choose a TVS diode with a standoff voltage of 12V and clamping voltage around 17V. For instance:
🔹 P6KE15A TVS Diode
It activates when voltage exceeds 15V and absorbs the spike, keeping downstream components safe.
🛒 Product Suggestion :
We recommend Made-in-India:
🔹 MOV
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