As electronic devices continue to pursue higher intelligence and more compact form factors, one of the key pillars of overall system stability—the power management IC (PMIC)—is undergoing a quiet “efficiency revolution.”

With the rapid advancement of battery technology, from consumer electronics to electric vehicles and large-scale energy storage systems, batteries have become the core energy carrier, making their performance testing increasingly critical. A battery pack typically consists of multiple cells and a Battery Management System (BMS). The BMS is responsible for monitoring cell status, estimating state of charge, managing cell balancing, and providing protection functions.

In recent days, high-voltage direct-grid-connected “ultra-fast charging” technologies have been deployed one after another. With a revolutionary design that allows direct connection to 10 kV / 35 kV medium-voltage grids and eliminates the need for traditional bulky transformers, this approach is rapidly becoming a mainstream pathway to achieve ultra-fast charging. By directly delivering DC output voltages of up to 800 V or even 1,000 V, it compresses electric vehicle charging time to the “minute level.”

In the laboratory, you may often hear a sentence: “Three-phase imbalance is just an abnormal condition—no need to worry too much.” But in reality, the situations that actually cause equipment problems are precisely these “non-ideal conditions.” Today, we will use the IT7900 three-phase AC power supply / grid simulator to talk about a very “engineering” topic: how to simulate three-phase voltage imbalance.

ITECH has recently and successfully delivered another mega-ampere-level high-current power supply system to a leading hydrogen energy manufacturer. The system, built around the IT-M3900D series high-power programmable DC power supplies, has now been officially commissioned on the customer’s next-generation electrolyzer production line.