Yageo and its subsidiary brand Pulse, frequent innovators in magnetic components for power electronics, have come up with several new products recently that incorporate new designs and strategies. Key market drivers are automotive electrification and ethernet applications.
As electric vehicle adoption accelerates, residual current detection becomes mission-critical in meeting international safety regulations and protecting end users. The group’s FG-R Series, is a fluxgate-based AC and DC leakage current sensor optimized for Mode 2 & Mode 3 EV charging systems, as well as suitable for OBC applications, combining precision, robustness, and compliance in a compact modular package.
The FG Series is an open-loop fluxgate residual current sensor that offers analog leakage current monitoring and independent digital alarms for AC and DC thresholds. Its architecture enables fast response, broad frequency range, and compliance with global standards. Fluxgate current sensors generally rely on magnetic materials for their operation, using a ferromagnetic core to detect the magnetic field created by the current being measured, which in turn modulates the core’s magnetic flux and produces a measurable output signal.
The importance of residual current detection is extending beyond EVSE infrastructure into the vehicle itself as EVs become mobile energy hubs, notes the company:
- Vehicle-to-Load (V2L): Modern electric vehicles now feature AC outlets that allow users to power laptops, scooters, coffee machines, and other appliances directly from the vehicle. Each AC outlet requires its own dedicated RCD protection to ensure safety against potential ground faults.
- Vehicle-to-Grid (V2G): As EVs discharge energy back to homes or industrial grids, three-phase power transfer becomes common. In these scenarios, up to three-phase residual current detection is required to meet regulatory requirements and safely manage discharging operations.
While the current FG-R series provides robust performance for many traditional applications, a new series is coming to eliminate earlier limitations, offering full three-phase RCD detection and improved performance for onboard energy delivery systems.
A new generation of high-isolation transformers for battery management systems (BMS) has also been developed. The HM216xNL series is designed to meet the latest safety standards and requirements for insulation up to 1000V peak working voltage and 4300Vdc isolation. Options with or without chokes and center-tapped windings are available, matched to leading BMS cell and stack monitoring silicon ICs.
Another innovation from Pulse is a series of 1GBase-T, 2.5GBase-T, 5GBase-T and 10GBase-T Ethernet magnetics PulseChip LAN transformers with complementary line chokes. The series also has two designs which support 60W PoE+, and unique to Pulse a 90W PoE+ PulseChip design series of wire-wound ferrite chip transformers. The components are well suited for applications requiring higher bandwidth and PoE function such as base stations, routers, switches, remote PTZ Cameras and video displays. For more info, see www.yageo.com.
