STMicroelectronics grows ST-ONE controller family for USB Power Delivery applications up to 140W 2023/03/03 STMicroelectronics
Equipment and control components
Geneva, March 3, 2023 - STMicroelectronics has introduced the ST-ONEHP integrated digital controller, the world's first IC certified by USB-IF according to the USB Power Delivery Extended Power Range (USB PD3.1 EPR) specification.
As the third controller in the ST-ONE family, the ST-ONEHP has 28V output capability to simplify building chargers and power adapters rated up to 140W. Sharing the ST-ONE architecture, the converter is a non-complementary active-clamp-flyback zero-voltage-switching (ZVS) topology that ensures superior efficiency at high power output and switching frequency. Essential features including secondary regulation and the USB PD communication interface are integrated, saving bill-of-materials costs as well as PCB size and complexity. Built-in synchronous rectification helps maximize efficiency and reinforced galvanic isolation permits a solution that is both compact and safe.
Inside the ST-ONEHP, an Arm(R) Cortex(R)-M0+ microcontroller maintains overall control. The MCU is supplied pre-loaded with certified USB PD firmware, which eases end-product approval to qualify for the USB logo.
With 64KByte of flash storage, the MCU provides room for customizing the power-conversion firmware.
The ST-ONEHP is well suited to use with ST's MasterGaN single chip, integrating the Company's third-generation gallium nitride (GaN) power transistors and optimized gate drivers. The SiP ease the adoption of GaN technology in energy-conscious applications to realize benefits including superior thermal performance and switching efficiency compared to conventional silicon transistors.
Complementing the properties of the ST-ONE converter, MasterGaN helps maximize performance and allows high switching frequencies that permit smaller passive components. By combining the ST-ONEHP controller and a 9mm x 9mm MasterGaN1 half-bridge device, ST has produced the EVLONE140W reference design smaller than a standard 65W laptop charger.
Its volume of 90cm3 equates to industry-leading power density of 25W/in3, while the peak efficiency reaches beyond 94%. From an environmental perspective, the charger can use just a quarter of the plastics and is 2% more efficient than average chargers. Using these products in all chargers produced worldwide would save 3.5 million tons of CO2 emissions.
Samples of the ST-ONEHP are already available for selected customers in a SSOP36 leaded package, priced from $3.90 for orders of 1000 pieces.
About STMicroelectronics
At ST, we are more than 50,000 creators and makers of semiconductor technologies mastering the semiconductor supply chain with state-of-the-art manufacturing facilities. An integrated device manufacturer, we work with more than 200,000 customers and thousands of partners to design and build products, solutions, and ecosystems that address their challenges and opportunities, and the need to support a more sustainable world. Our technologies enable smarter mobility, more efficient power and energy management, and the wide-scale deployment of the Internet of Things and connectivity. ST is committed to becoming carbon neutral by 2027.
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