Inductor (choke) is a passive electrical component that stores energy in a magnetic field when electric current flows through it, used for filtering, energy storage, and impedance matching in voltage regulator modules.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Core Loss | Measured in mW at specific frequencies | |
| Tolerance | ±10% to ±20% | |
| Inductance | 1 μH to 1000 μH (typical for VRMs) | |
| DC Resistance | 1 mΩ to 100 mΩ | |
| Current Rating | 1 A to 50 A | |
| Saturation Current | Specified at 10-30% inductance drop | |
| Operating Temperature | -40°C to +125°C |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
A power management component that regulates and stabilizes voltage levels for electronic circuits.
Electronic circuitry within a GPU responsible for regulating and delivering stable power to various components.
A power regulation component that converts and stabilizes input voltage to precise levels required by GPU cores and memory.
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An inductor is a general term for the component, while a choke specifically refers to inductors used to block (choke) high-frequency alternating current (AC) while allowing direct current (DC) to pass, commonly in power supply filtering applications.
Inductors impact efficiency through core losses (hysteresis and eddy currents) and copper losses (resistance in windings). High-quality materials and design minimize these losses, improving overall VRM efficiency, typically above 90% in modern designs.
No, inductors are irreplaceable in switching VRMs due to their energy storage and filtering roles. Alternatives like resistors or capacitors cannot provide equivalent inductance for stable voltage regulation.
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