Universal AC Input to 5V 1.5A USB Type-C™ DFP Output Adapter Reference Design


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Key Document


The PMP40260 is a reference design for USB Type-C™ adapter applications, it can provide 5V 1.5A for the USB Type-C™ device, as well as a legacy device which supports DCP charging protocol. The solution implements a high efficiency primary side controller UCC28704. The system performance is fully tested and it passes conduction EMI test. It also meets COC V5 Tier2 2016 specification with 130 mOhm cable. Combined with the diode rectifier, primary side regulation, commonly used transformer and high integrated type C port controller, low system cost is achived. It also has a compact form factor whose size is 47mmX34mmX15mm.

  • Diode rectifier QR flyback with primary side regulation
  • High 4-point average efficiency above 78% with 130 mOhm cable
  • USB Type-C™ DFP only with DCP supported
  • Compliant with EN55022 Class B conducted and radiated EMI
  • Size 47mm x 15mm

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Schematic/Block Diagram

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Bill of Materials (BOM)

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(Output Voltage 1)
Vin (Min) (V)85
Vin (Max) (V)265
Vout (Nom) (V)5
Iout (Max) (A)1.5
Output Power (W)7.5
Input TypeAC
TopologyFlyback- DCM

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS25821  TPS2582x USB Type-C 1.5-A Source Controller and Power Switch  USB  Sample & Buy Not Available
UCC28704  Off-Line Constant-Voltage Constant-Current Flyback Controller With Primary-Side Regulation (PSR)  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)
TPS25821 Download
UCC28704 Download Download

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Technical Documents

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User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 805 06 Dec 2017 0
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 203 06 Dec 2017 0
ZIP 27 06 Dec 2017 0
PDF 360 06 Dec 2017 0
PDF 122 06 Dec 2017 0
PDF 164 06 Dec 2017 1 1
PDF 111 06 Dec 2017 3
Related Tools & Software

Reference Designs  ( 1 )

Name Part Number Tool Type
Universal AC Input to 5V 2A Output Reference Design CoC Tier 2 2016 Compliant  PMP11612  TI Designs

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