85 to 265VAC Input 5V@30W Dual Port Charger For Tablets and Smart Phones Reference Design


Design files


This reference design is capable of charging two devices at 2.5A each with over 82% efficiency. The UCC24610 synchronous rectifier controller and CSD17312Q5 FET reduce the rectifier loss and provide high efficiency with a minimal increase in cost. 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 2.15" x 1.7" x 1.0".

  • Capable of charging two devices at the same time
  • AC/DC designed for 30W total capacity
  • Synchronous rectification reduces losses and provides good efficiency (>82%)
  • No load (Standby) power consumption is less than 150mW
Output voltage options PMP10478.1
Vin (Min) (V) 85
Vin (Max) (V) 265
Vout (Nom) (V) 5
Iout (Max) (A) 6
Output Power (W) 30
Isolated/Non-Isolated Isolated
Input Type AC
Topology Flyback- DCM^Flyback- Quasi Resonant^Flyback- Synchronous
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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.

TIDU768.PDF (3486 K)

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


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement


Includes TI products in the design and potential alternatives.

Flyback controllers

UCC28740Constant-Voltage, Constant-Current (CVCC) Flyback controller with Secondary Side Regulation (SSR)

Data sheet: PDF | HTML
N-channel MOSFETs

CSD17312Q530-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 1.7 mOhm

Data sheet: PDF
SR & load share controllers

UCC24610Secondary side synchronous rectifier controller

Data sheet: PDF | HTML
Shunt voltage references

TL431Adjustable precision shunt regulator

Data sheet: PDF | HTML
Temperature switches

TMP300Resistor-Programmable, up to 18V-Capable Temp Switch and Analog Out Sensor

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

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Type Title Date
Test report PMP10478 Test Results Feb. 06, 2015

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