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Image of Vishay/Dale Using IHLE® Inductors to Mitigate Radiated EMI - EMI Comparison

This slide shows a comparison of the radiated EMI for an unshielded inductor, an IHLP, and an IHLE®. The Y-axis indicates the measured radiated EMI in mV and the X-axis is the measurement distance from the top of the inductor in a DC/DC converter switching at 500kHz with 12VIN, 1.5VOUT at 15ADC. The unshielded ferrite drum inductor has serious EMI issues. The IHLP, with its B Field magnetic shielding, has 3 to 4 times better radiated EMI across the measurement distance. The IHLE improves the radiated noise reduction even further and provides 10 to 20 times less radiated EMI than the ferrite inductor.

PTM Published on: 2024-03-05