30-W/in3, 94% Efficiency, 65-W USB Type-C PD AC/DC Adapter Reference Design TIDA-01622 (ACTIVE)

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Key Document

Description

This fully tested, USB power delivery reference design is a high efficiency, high power density, AC/DC adapter solution with a wide input voltage range (85 - 265VAC) for laptop adapters and smartphone charger applications. It adopts active-clamp-flyback topology controlled by TI’s newest ACF controller UCC28780 as the mainly power supply stage. This design uses TPS25740B, TI’s PD source controller, to achieve a full PD 2.0 function. The design achieves a peak efficiency of 94% at a very high switching frequency. The design’s power density is increased to 30 W/in3, which is much higher than traditional solutions.

Features
  • High efficiency (94% peak value)
  • High power density (30W/in³)
  • Low no load power consumption (60mW)
  • Low light load input power (0.5W), @20Vout/0.25W output
  • Fully compatible with USB PD 2.0 standard, with 5V/3A, 9V/3A, 15V/3A, 20V/3.25A output
  • Active-clamp flyback + SR topology
  • Small size (62mm*28.6mm*18.4mm)

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Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (7)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ATL431  2.5V low-Iq adjustable precision shunt regulator  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
CSD17578Q3A  CSD17578Q3A 30 V N-Channel NexFET™ Power MOSFET  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
ISO7710  High-speed, robust-EMC reinforced single-channel digital isolator  Isolation  Sample & Buy View Design Kits & Evaluation Modules
TPD1E05U06-Q1  Automotive 1-channel ultra-low-capacitance IEC ESD protection diode  Circuit protection  Sample & Buy View Design Kits & Evaluation Modules
TPS25740B  USB Type-C™ and USB PD Source Controller  USB  Not Available View Design Kits & Evaluation Modules
UCC24612  High-Frequency Multi-Mode Synchronous Rectifier Controller  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
UCC28780  Adaptive zero voltage switching active-clamp flyback controller  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ATL431 Download Download
CSD17578Q3A VSONP (DNH)| 8 Download Download
ISO7710 Download -
Download -
TPD1E05U06-Q1 Download
TPS25740B Download Download
UCC24612 Download Download
UCC28780 Download
Download Download

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Technical Documents

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Datasheet (1)
Title Type Size (KB) Date
PDF 2822 22 Feb 2018
User guides (1)
Title Type Size (KB) Date
PDF 3069 23 Apr 2019
Design files (6)
Title Type Size (KB) Date
PDF 346 17 Aug 2018
ZIP 5362 17 Aug 2018
ZIP 324 17 Aug 2018
ZIP 883 06 Apr 2018
ZIP 2465 06 Apr 2018
ZIP 218 06 Apr 2018

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