30-W/in3, 93.4% efficiency, 100-W AC/DC adapter reference design

(ACTIVE) TIDA-01623

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Key Document

Description

This fully-tested reference design is a high-efficiency, high-power-density, AC/DC adapter solution with a wide input voltage range (100- to 240-V AC) for laptop adapters and smartphone charger applications. This design consists of a front-end transition-mode (TM) power factor correction (PFC) circuit based on the UCC28056, followed by an active-clamp flyback for isolated DC/DC conversion based on the UCC28780.

Features
  • Wide operating input range: 100- to 240-VAC with full power delivery over entire range
  • High efficiency (93.4% peak value) with natural cooling
  • Configured as 5-V/5-A, 9-V/5-A, 15-V/5-A, 20-V/5-A output
  • Low standby power consumption (130 mW)
  • Small size (70 mm × 42 mm × 16.5 mm)
  • High power density (30 W/in3)

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Schematic/Block Diagram

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Design Guide

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Design Files

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Bill of Materials (BOM)

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Parametrics
 TIDA-01623.1
(Output Voltage 1)
Vin (Min) (V)100
Vin (Max) (V)240
Vout (Nom) (V)20
Iout (Max) (A)5
Output Power (W)100
Isolated/Non-IsolatedIsolated
Input TypeAC
TopologyBoost- Transition Mode
Flyback- Active Clamp

TI Devices (8)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ATL431LI  High-bandwidth low-Iq programmable shunt regulator  Voltage references  Not Available Not Available
CSD17575Q3  30-V, N-Channel NexFET™ Power MOSFET   MOSFETs  Sample & Buy Not Available
ISO7710  High Speed, Robust EMC Reinforced Single-Channel Digital Isolator  Isolation  Sample & Buy View Design Kits & Evaluation Modules
TLV171  36V Low-Power RRO General-Purpose Operational Amplifier  Operational amplifiers (op amps)  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
UCC24612  High-Frequency Multi-Mode Synchronous Rectifier Controller  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
UCC28056  6-Pin High Performance CRM/DCM PFC 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)
ATL431LI Download Download
CSD17575Q3 VSON-CLIP (DQG)| 8 Download Download
ISO7710 Download Download
Download Download
TLV171 Download
Download
TPD1E05U06-Q1 Download
UCC24612 Download Download
UCC28056 Download
UCC28780 Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 3023 02 Nov 2018 0
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 320 02 Nov 2018 0
ZIP 4977 02 Nov 2018 0
PDF 1639 02 Nov 2018 0
PDF 533 02 Nov 2018 0
PDF 326 02 Nov 2018 0
PDF 585 02 Nov 2018 0

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