Pulse Electronics Bead Inductor Meets CPU Power Challenges

Wound-toroid inductors have been the mainstay for desktop core voltage regulators (VCORE) for years. Historically, the bulky size, sloppy tolerances and high power losses of these inductors were not a concern as they were the lowest-cost solution, making them the solution of choice. 

However, three evolving VCORE requirements have highlighted the negative aspects of the wound toroid (size, tolerances, efficiency). Efforts to modify the toroid design to address these issues along with broader global economic conditions have continually increased the price of the once low-cost wound toroid. As a result, the wound toroid is now an ineffective and ultimately higher cost choice for VCORE regulators.