STEVAL-USBPD27S USB Type-C® PD Adapter Design

STMicroelectronics' STEVAL-USBPD27S 27 W AC/DC adapter reference design implements a USB Type-C 3.0 PD provider with programmable power supply (PPS) support and adaptive synchronous rectification. The design features a reduced bill of materials (BOM), allowing for a compact and cost-effective solution. It accepts a wide input voltage range and delivers two fixed PDOs (5 V at 5 A, 9 V at 3 A) and two APDOs (5 V prog at 5 A and 9 V prog at 3 A). Finely adjusted to the advertised voltage range (PPS), the design manages the VCONN as required by the USB PD specification.

The solutions satisfies stringent energy saving recommendations with <40 mW of no-load power consumption, minimum four-point average efficiency in active mode compliant with CoC ver. 5 – Tier 2 and DOE Level VI requirement (except the 9 V Prog at 3 A APDO) , and EMI compliance with EN55022 (Class B).

Features

• 27 W USB PD 3.0 compliant
• Compact 59 mm x 35 mm x 21 mm; 10.2 W/inch³ power density
• 90 V_AC to 264 V_AC input range
• Two fixed PDOs: 5 V at 5 A, 9 V at 3 A
• Two APDOs (PPS): 5 V prog at 5 A, 9 V prog at 3 A
• PPS Mode: 20 mV step for CV, 50 mA step for CC
• Minimum four-point average efficiency in active mode compliant with CoC ver. 5
• <40 mW no-load standby power
• Adaptive synchronous rectification controlled by onboard MCU
• OVP, UVP, OC, short-circuit protections
• ESD protection exceeding IEC61000-4-2 Level 4 on CC lines
• Immunity against surge current on V_BUS pin up to 35 A in an 8/20 μs waveform, according to IEC61000-4-5
• Compliant with EN55022 (Class B) standard for conducted noise emissions