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STMicroelectronics STEVAL-USBPD45C AC-DC Adapter Evaluation Board

STMicroelectronics STEVAL-USBPD45C AC-DC Adapter Evaluation Board features a USB Type-C connector and functions as a USB Power Delivery provider with a single source port. The board accepts a wide input mains range and delivers 5V, 9V and 15V output voltage profiles. The adapter architecture is based on the STEVAL-USBPD45P power supply board and the STEVAL-USBPD45I Digital Control Board. The STEVAL-USBPD45P implements the power stage in flyback topology with synchronous rectification. The STMicroelectronics STEVAL-USBPD45C AC-DC Adapter Evaluation Board is designed to control the USB Type-C connector and manage the USB Power Delivery stack and the adaptive synchronous rectification algorithm.  

The flyback converter is based on the STCH03 offline PWM controller for low standby adapters and the STF7N80K5 MDmesh™ K5 primary MOSFET. On the secondary side, the adaptive synchronous rectification with STL40N75LF3 Power MOSFET is controlled and driven directly by the STM32F051 MCU. This allows an overall efficiency improvement with a very low external component count. The USB type-C port is controlled by the certified STUSB1602A, enabling the VBUS power path and integrating high voltage protections on VBUS and CC lines.

Features

  • USB PD 3.0 compliant
  • Universal input mains voltage range: from 90VAC to 264VAC (frequency from 45Hz to 65Hz)
  • Three fixed PDOs available: 5V, 9V, 15V – 3A continuous operation
  • Load power limited to 45W
  • Minimum four-point average efficiency in active mode compliant with CoC ver. 5 – Tier 2 and DOE requirement
  • >50% efficiency with Pout = 250mW
  • <35mW no-load standby power
  • Adaptive synchronous rectification with digital driver and controller
  • Load feedforward
  • OVP, UVP, OC, short-circuit protections
  • ESD protection >30 kV contact on VBUS and 20kV contact on CC lines and according to IEC61000-4-2
  • Immunity against surge current on VBUS pin up to 35A in a 8/20µs waveform, according to IEC61000-4-5
  • Compact design: 73mm x 51mm x 25mm
  • RoHS compliant

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Pubblicato: 2018-06-13 | Aggiornato: 2023-02-09