High Current Inductors for Servers/Datacenters – PG/PGL Series

Pulse Electronics, a YAGEO Company expands its portfolio of high current, low DCR inductors used in single-phase PoL and multi-phase buck converters to power processors, memory modules, FPGAs, and ASICS in servers, datacenters, networking systems, and graphics cards. The four families provide lower core loss using high-frequency materials, reduced DCR, and higher current ratings in different footprints. These multi-phase buck topologies distribute the current among multiple parallel paths with staggered turn-off and turn-on. By operating each phase in a staggered fashion, the ripple currents in each phase tend to cancel at the output, and the overall ripple current seen at the load is much smaller than the ripple on each phase. This approach allows smaller inductances (typically on the order of 50 nH to 300 nH), allowing design engineers a trade-off between how quickly the converter responds to a change in the load current (transient response) versus the stability of the control loop. By adjusting the number of phases used in the converter, the user has the flexibility to optimize the circuit for their specific application.

Resources

• Power Inductors