YAGEO Group High-Current Power Bead Inductors are designed for high-current power-conversion applications that require low losses and stable inductance under varying operating conditions. These inductors offer an inductance range of 50 nH to 320 nH and support saturation currents up to 148 A. They are available in height options of 4.5 mm, 7 mm, 8 mm, and 12 mm. The design uses high-frequency core materials and low DC resistance (DCR) structures to reduce core losses and support higher current handling in compact footprints.

In multi-phase buck converter topologies, current is distributed across parallel phases with staggered switching intervals. This arrangement reduces output ripple by allowing phase ripple currents to partially cancel at the load. The inductors are used in single-phase point-of-load (PoL) and multi-phase buck converters powering processors, memory modules, FPGAs, and ASICs. The applications include servers, data centers, networking equipment, and graphics cards, where stable current delivery and efficient power conversion are required.

Features of High-Current Power Bead Inductors

YAGEO Group High-Current Power Bead Inductors incorporate low-loss magnetic materials, ultra-low DCR construction, and high current capability across multiple footprints. Let’s go through its features in detail:

Inductance Range and Current Handling

The inductors provide an inductance range of 50 nH to 320 nH, with maximum saturation currents up to 148 A, supporting high-current power-conversion applications. The components are available with maximum heights of 4.5 mm, 7 mm, 8 mm, or 12 mm, allowing integration into designs with different space constraints. The construction uses single-turn winding structures and low DCR layouts to enable higher current ratings across multiple footprints.

Core Materials and Energy Density

These inductors use ferrite cores and high-frequency magnetic materials to minimize AC losses and maintain stable performance during high-frequency switching. Commercial composite variants provide energy storage density up to 1300 µJ/cm³, using high-density core materials and low-loss winding structures that maintain soft saturation characteristics. The operating temperature ranges extend from −40 °C to +130 °C for commercial composite versions.

Performance in Multi-Phase Power Topologies 

The inductors are commonly implemented in multi-phase buck converter architectures, where current is distributed across several parallel phases. The staggered switching of phases allows ripple currents to partially cancel at the output, reducing the load’s overall ripple, compared with single-phase operation. This configuration supports efficient current delivery to high-performance processors and digital devices. 

Series Variants and Mechanical Options

Multiple product series address different electrical and mechanical requirements. 

• PGL6076 series supports over 130 A peak current, 90 nH to 320 nH inductance, and a 12 mm height. 

• PGL6189 series provides over 125 A peak current with 50 nH inductance in an 8 mm height package. 

• PG2292 series supports 50 nH to 70 nH inductance with over 80 A peak current. 

• PG2289 series offers 100 nH inductance and 16 A current rating in a compact 4.5 mm height package. 

The commercial composite series (PA22, PA51, and PA54) provides footprints from 4.1 mm × 4.1 mm to 16.8 mm × 15.8 mm. The PGL727XHLT variant of coupled inductors support operation up to 3 MHz with 0.2 mΩ maximum DCR. 

Applications

The YAGEO Group High-Current Power Bead Inductors are used in power delivery circuits that require high current handling and stable inductance in compact designs. In PoL regulators, they support voltage regulation for processors and digital logic by filtering switching ripple and maintaining stable output current. In multi-phase buck converters, multiple inductors operate across parallel phases to distribute current and reduce output ripple through phase-staggered switching. These inductors are widely implemented in servers and data center equipment, where efficient power conversion is required for CPUs, memory modules, FPGAs, and ASICs. They are also used in networking systems and graphics cards, providing reliable current delivery for high-performance computing and communication hardware.