65-W USB Type-C™ high density active clamp flyback with GaN reference design
PMP21639
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Key Document

Description

This reference design is a high density USB adapter that uses the UCC28780 active clamp flyback controller and LMG3411R150 GaN with integrated driver and protection. The maximum power rating is 65W at 20V output but is adjustable for 20V/15V/9V/5V output voltage and 3A.  This design reaches a peak efficiency of 93.7%. The average efficiency and standby power levels are designed to meet DoE level VI and CoC tier 2 limits.  The compact design has dimensions of 2.54” x 1.13” x 0.95” (65mm x 28mm x 25mm).

Features
  • Compact size 2.54” x 1.13” x 0.95” (65mm x 28mm x 25mm)
  • High efficiency, 93.7% peak
  • EMI data provided in test report, below CISPR32 limits
  • Supports variable output voltage 5V to 20V
  • Designed to meet efficiency and standby requirements of DoE Level VI and CoC tier 2

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Schematic/Block Diagram

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Design Guide

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Design Files

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Parametrics
 PMP21639.1
(Output Voltage 1)
Vin (Min) (V)85
Vin (Max) (V)265
Vout (Nom) (V)20
Iout (Max) (A)3.25
Output Power (W)65
Isolated/Non-IsolatedIsolated
Input TypeAC
TopologyFlyback- Active Clamp

TI Devices (4)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ATL431  2.5-V low-IQ adjustable precision shunt regulator  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
LMG3411R150  600-V 150-mΩ GaN with integrated driver and cycle-by-cycle overcurrent protection  Power management  Sample & Buy View Design Kits & Evaluation Modules
UCC28780  1-MHz High Frequency Active Clamp Flyback Controller  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
UCC5350  5-A/5-A, 3-k/5-kVRMS 1-channel isolated gate driver with 8-V/12-V UVLO, miller clamp or split out  Gate drivers  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ATL431 Download Download
LMG3411R150 Download
UCC28780 Download
Download Download
UCC5350 Download Download
Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 15047 04 Sep 2020
Design files (6)
Title Type Size (KB) Date
ZIP 523 04 Sep 2020
ZIP 2618 04 Sep 2020
PDF 1231 04 Sep 2020
PDF 268 04 Sep 2020
PDF 343 04 Sep 2020
PDF 286 04 Sep 2020

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