Magnachip Semiconductor Corporation announced the launch of a new generation Low-Voltage Metal Oxide Semiconductor Field Effect Transistors (LV MOSFETs) featuring lower Rss(on) for battery Protection Circuit Modules (PCMs) in smartphones.

As demand for high-end 5G and LTE smartphones increases, extended battery life and strengthened protection features for batteries are becoming important. 5G phones, in particular, need long-lasting batteries with high endurance to process the large amount of data for fast download and upload. Magnachip developed the new generation LV MOSFETs with advanced overvoltage and overcurrent protection features to extend battery life and reduce overheating issues. Magnachip began mass production of this new 6.5^th generation (6.5G) product last month and it is being used in a new 2022 flagship model from one of the world’s largest smartphone manufacturers.

The Rss(on) of this new 6.5G product is 20 percent lower than the previous version with the same chip size to reduce current loss and improve heat dissipation. This lower Rss(on) controls a high power density above 25W to prevent a battery from overheating and protect the PCM while the battery is being fast-charged. Also, PCM functionality has been greatly enhanced by an upgraded Electrostatic Discharge (ESD) protection diode. This diode mitigates a maximum of 2kV, based on the human-body model, of ESD to strengthen circuit protection and prevent damage to other smartphone components. Along with this powerful battery protection, the size of chip was significantly reduced to better meet the requirements of new smartphone models.