1. What is the Vishay IHLP Loss Equation?

The Vishay IHLP loss equation calculates the total power loss in IHLP series inductors, which is the sum of the copper loss (I²R) and the core loss. This helps engineers evaluate the thermal performance and efficiency of the inductor in their circuit designs.

2. How Does the Calculator Work?

The calculator uses the IHLP loss equation:

Where:

• \( I \) — Current through the inductor (Amps)
• \( DCR \) — DC resistance of the inductor (Ohms)
• \( Core\ Loss \) — Power loss in the magnetic core (Watts)

Explanation: The equation accounts for both the resistive losses in the winding (I²R) and the magnetic losses in the core material.

3. Importance of IHLP Loss Calculation

Details: Accurate loss calculation is crucial for thermal management, efficiency analysis, and reliability assessment in power electronics designs using Vishay IHLP inductors.

4. Using the Calculator

Tips: Enter the RMS current through the inductor, its DCR value, and the core loss (typically from datasheet graphs). All values must be non-negative.

5. Frequently Asked Questions (FAQ)

Q1: What is DCR in inductors?
A: DCR (DC Resistance) is the resistance of the inductor's wire winding when measured with DC current.

Q2: How do I find core loss values?
A: Core loss is typically provided in datasheet graphs as a function of frequency and flux density or can be measured experimentally.

Q3: Does this account for AC losses?
A: The basic equation accounts for DC copper losses. For AC applications, additional skin and proximity effect losses may need consideration.

Q4: What's a typical loss value for IHLP inductors?
A: Losses vary widely by size and application, but might range from milliwatts to several watts depending on current and inductor characteristics.

Q5: How does temperature affect these calculations?
A: DCR increases with temperature, so calculations should use the DCR value at expected operating temperature for most accuracy.