CATL unveiled three EV battery products at its inaugural Super Tech Day: The Freevoy Dual-Power Battery, Naxtra - the world's first mass produced sodium-ion battery, and the second-generation Shenxing Superfast Charging Battery, as well as an integrated 24V start/stop Naxtra battery for heavy-duty trucks. These innovations break through technological boundaries, and lead the industry into the "Multi-Power Era".

ROHM has developed N-channel power MOSFETs featuring industry-leading* low ON-resistance and wide SOA capability. They are designed for power supplies inside high-performance enterprise and AI servers.

Renesas introduced R-BMS F, an all-in-one battery management solution with fixed firmware for lithium-ion packs in 2-4 and 3-10 cell series. It integrates a fuel gauge IC, MCU and analog front end, with pre-validated firmware, software, tools and documentation to speed up safe, efficient battery system design.

TDK Corporation announces the HVC50, a high-voltage DC contactor designed for connecting or disconnecting lithium-ion batteries with up to 1500 V in traction applications, energy storage systems (ESS), and megawatt charging systems (MCS). With this component, TDK enables its customers to drive the green transformation towards an all-electric society and reduce carbon footprint.

DC grids are already used in industrial applications and pilot lines in Europe; however, their innovation potential extends far beyond that, especially in the areas of power converters, control algorithms, grid stability and energy management. Our researchers focus on these topics within the new, large-scale research project DC-MicroGrid.

Allegro MicroSystems, Inc., a global player in power and sensing solutions for motion control and energy-efficient systems, has announced the launch of its latest XtremeSense TMR current sensors.

Heraeus Electronics will highlight its latest advancements in high-reliability materials for power electronics through a series of live presentations at PCIM Expo 2025, scheduled to take place May 6-8, 2025 in Nuremberg, Germany. Visitors can explore Heraeus Electronics' wide range of material solutions at Hall 6, Booth 6-310.

Würth Elektronik introduces its new molded flat-wire inductor with the designation WE-PMFI. The compact inductor measures just 2.0 × 1.6 × 1.0 mm in its smallest package. It also has a low resistance, an operating voltage of up to 48 V, as well as an extended temperature range from -55°C to +150°C, making it particularly suitable for DC/DC converter assemblies in compact applications that require high output currents and switching frequencies exceeding one megahertz.

Loop design and stability tests are important tasks for a power engineer. A power supply, either switch mode or linear mode, should be designed with fast transient response and a sufficient stability margin. An unstable or marginally stable power supply can oscillate and cause increased ripples, voltage, current, and thermal stresses, and possibly damage the supply and its critical load devices.

Part 2 of this article series discusses examples of unusual or problematic Bode plots and their corresponding root causes. The previous article “Understand Power Supply Loop Stability and Loop Compensation — Part 1: Basic Concepts and Tools” reviews the critical concepts and importance of loop stability, from the Nyquist plot criterion to Bode plots.