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STMicroelectronics STEVAL-USBPD27S 27W AC-DC Adapter Reference Design works as a USB Power Delivery Provider with a single USB Type-C port. This supports Programmable Power Supply (PPS) and features adaptive synchronous rectification. Thanks to a minimal bill of materials, it allows users to easily design compact and cost-effective adapters. The STMicroelectronics STEVAL-USBPD27S accepts a wide range of input voltage and delivers two well regulated fixed PDOs (5V @ 5A, 9V @ 3A) and two APDOs (5V Prog @ 5A and 9V Prog @ 3A). They are finely adjusted to the advertised voltage range (Programmable Power Supply or PPS), thus managing the VCONN, as requested by the USB Power Delivery specification.
The adapter meets the most stringent energy-saving recommendations (EU CoC – Tier 2 ver. 5 and DOE Level VI), ensuring < 40mW of no-load power consumption. All PDOs are compliant with CoC ver. 5 – Tier 2 and DOE Level VI requirements except the 9V Prog @ 3A APDO, guaranteeing compliance with the minimum four-point average efficiency in active mode. The system has been tested to verify conducted noise emissions and compliance with the EN55022 (Class B) using standard average detectors, at a half and full load with an input voltage of 115VAC and 230VAC.
