TI unveils adapter power controller with lowest standby power

12th November 2012

ES Admin

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Texas Instruments Incorporated today introduced a power management controller with a 700-V start-up switch that achieves less than 10 mW of “no-load” standby power in 5- and 10-watt cube adapters used with smartphones and tablets. In addition to the lower power capability, the new UCC28710 primary-side, regulated flyback controller helps designers create smaller cube adapters and AC-powered equipment.

The innovative controller maintains an industry-best 78-percent average power efficiency at 5 watts, which allows adapters to meet the European Commission’s 5-Star no-load power consumption rating of
Key features and benefits of the UCC28710:
• Lowest standby power: achieves • Highest integration with primary-side regulation: eliminates the need for an optocoupler and TL431 feedback circuit; supports widest input voltage range with VDD, resulting in smaller bias capacitors; supports smaller transformers because of its high-frequency operation; and reduces overall design size and complexity without the need for additional external circuits.

Speed time-to-market with adapter charging reference designs
The family of UCC287xx controllers includes the UCC28700, UCC28701 and other products to help customers simplify and speed their adapter designs. A new UCC28710 controller-based 10-W AC Eco-charger for tablets and smartphones design adds to TI’s growing PowerLab™ reference design library for AC adapters, universal USB charging cubes and car chargers.

Availability and pricing
The UCC28710 flyback controller is available in a 7-pin, SOIC package and is priced at US$0.42 in quantities of 1,000. The 5-W UCC28711EVM evaluation module is available for ordering through TI’s eStore. The module converts a 90-V to 265-V RMS input voltage down to 5 V DC, with a 1-A current limit for USB adapter applications.