85 to 265VAC Input 5V@4A Dual Port Charger For Tablets and Smart Phones Reference Design


Design files


This reference design is capable of charging two devices at 2A each with over 85% efficiency. The UCC24610 synchronous rectifier controller and CSD18533Q5A FET reduce the rectifier loss and provide ultra-high efficiency with a minimal increase in cost. The UCC28700 primary-side regulated flyback further minimizes cost by eliminating the need for an opto-coupler, and yet maintains good output regulation. The TPS2561A provides accurate and independent current limit protection for each port. The TPS2513 communicates with the mobile device under charge to ensure that the charger is accepted by most phone and tablet models. This compact design consumes a volume of only 1.5" x 1.8" x 0.9".

Output voltage options PMP8817.1
Vin (Min) (V) 85
Vin (Max) (V) 265
Vout (Nom) (V) 5
Iout (Max) (A) 4
Output Power (W) 20
Isolated/Non-Isolated Isolated
Input Type AC
Topology Flyback- Quasi Resonant^Flyback- Synchronous
?? View video with transcript Video

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

SLUUAG5.PDF (2877 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

SLURA65.PDF (186 K)

Detailed schematic diagram for design layout and components

SLURA66.PDF (81 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

SLUC450.ZIP (194 K)

Design file that contains information on physical board layer of design PCB


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Flyback controllers

UCC28700Constant-voltage, constant-current PWM with PSR & Programmable cable compensation

Data sheet: PDF | HTML
N-channel MOSFETs

CSD18533Q5A60-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 5.9 mOhm

Data sheet: PDF | HTML
SR & load share controllers

UCC24610Secondary side synchronous rectifier controller

Data sheet: PDF | HTML
USB power switches & charging port controllers

TPS2513Dual USB Dedicated Charging Port Controllers

Data sheet: PDF | HTML
USB power switches & charging port controllers

TPS2561A2-ch, 0.25-2.8A adj. ILIMIT (tuned for 2.3±0.2A), 2.5-6.5V, 44mΩ USB power switch, active-high

Data sheet: PDF

Technical documentation

No results found. Please clear your search and try again.
View all 1
Type Title Date
Test report PMP8817 Test Results Apr. 26, 2013

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​