STMicroelectronics has launched the ST-ONEHP built-in digital controller, the world’s first IC licensed by USB-IF based on the USB Energy Supply Prolonged Energy Vary (USB PD 3.1 EPR) specification.
Because the third controller within the ST-ONE household, the ST-ONEHP has 28V output functionality to simplify constructing chargers and energy adapters rated as much as 140W. Sharing the ST-ONE structure, the converter is a non-complementary active-clamp-flyback zero-voltage-switching (ZVS) topology that ensures superior effectivity at excessive energy output and switching frequency. Important options together with secondary regulation and the USB PD communication interface are built-in, saving bill-of-materials prices in addition to PCB measurement and complexity. Constructed-in synchronous rectification helps maximize effectivity and bolstered galvanic isolation permits an answer that’s each compact and secure.
Contained in the ST-ONEHP, an Arm Cortex-M0+ microcontroller maintains general management. The MCU is provided pre-loaded with licensed USB PD firmware, which eases end-product approval to qualify for the USB emblem. With 64KByte of flash storage, the MCU gives room for customizing the power-conversion firmware.
The ST-ONEHP is nicely suited to make use of with ST’s MasterGaN single chip, integrating the Firm’s third-generation gallium nitride (GaN) energy transistors and optimized gate drivers. The SiP ease the adoption of GaN expertise in energy-conscious purposes to comprehend advantages together with superior thermal efficiency and switching effectivity in comparison with standard silicon transistors.
Complementing the properties of the ST-ONE converter, MasterGaN helps maximize efficiency and permits excessive switching frequencies that allow smaller passive elements. By combining the ST-ONEHP controller and a 9mm x 9mm MasterGaN1 half-bridge gadget, ST has produced the EVLONE140W reference design smaller than a typical 65W laptop computer charger.
Its quantity of 90cm3 equates to industry-leading energy density of 25W/in3, whereas the height effectivity reaches past 94%. From an environmental perspective, the charger can use only a quarter of the plastics and is 2% extra environment friendly than common chargers. Utilizing these merchandise in all chargers produced worldwide would save 3.5 million tons of CO2 emissions.
Samples of the ST-ONEHP are already accessible for chosen prospects in a SSOP36 leaded bundle, priced from $3.90 for orders of 1000 items.
For additional data please go to www.st.com/st-onehp