New 1-MHz active clamp flyback chipset and industry-first 6-A three-level buck battery charger from TI cut power supply size and charge time in half

DALLAS, March 1, 2018 /PRNewswire/ -- Texas Instruments (TI) (NASDAQ: TXN) today introduced several new power management chips that enable designers to boost efficiency and shrink power-supply and charger solution sizes for personal electronics and handheld industrial equipment.

Operating at up to 1 MHz, TI's new chipset combines the UCC28780 active clamp flyback controller and the UCC24612 synchronous rectifier controller to help cut the size of power supplies in AC/DC adapters and USB Power Delivery chargers in half. For battery-powered electronics that need maximum charging efficiency in a small solution size, the bq25910 6-A three-level buck battery charger enables up to a 60 percent smaller-solution footprint in smartphones, tablets and electronic point-of-sale devices.

"Consumers want faster charging in a smaller footprint. These new solutions not only accomplish that, but also enable designers to do more than they could before with less power," said Steve Lambouses, TI vice president, High Voltage Power.

Explore these new power-management devices and learn about other ways TI is giving engineers the power to innovate, design and learn by visiting booth No. 501 at the Applied Power Electronics Conference (APEC) in San Antonio, Texas, March 4-8, 2018.

Active clamp flyback chipset meets modern efficiency standards
Designed to work with both gallium nitride (GaN) and silicon (Si) FETs, the UCC28780's advanced and adaptive features enable the active clamp flyback topology to meet modern efficiency standards. With multimode control that changes the operation based on input and output conditions, pairing the UCC28780 with the UCC24612 can achieve and maintain high efficiency at full and light loads. For more information, see www.ti.com/UCC28780-pr and www.ti.com/UCC24612-pr.

    --  Double the power density: The chipset delivers efficient operation at up
        to 1 MHz, enabling a size reduction of 50 percent and higher power
        density than solutions today.
    --  High efficiency: Multimode control enables efficiency up to 95 percent
        at full loads and standby power of less than 40 mW, exceeding Code of
        Conduct (CoC) Tier 2 and U.S. Department of Energy (DoE) Level VI
        efficiency standards. For designs above 75 W, engineers can also pair
        the chipset with a new six-pin power-factor correction (PFC) controller,
        the UCC28056, which is optimized for light-load efficiency and low
        standby power consumption to achieve compliance with mandatory
        International Electrotechnical Commission (IEC)-61000-3-2 AC current
        harmonic limit regulations.
    --  Simplified design: Using features such as adaptive zero voltage
        switching (ZVS) control, engineers can easily design their systems with
        a combination of resistor settings and controller auto-tuning.

Three-level buck battery charger enables higher charging efficiency
Leveraging an innovative three-level power-conversion technology, the bq25910 enables up to 50 percent faster charging compared to conventional architectures by dramatically reducing thermal loss. For more information, see www.ti.com/bq25910-pr.

    --  Small solution size: With integrated MOFSETs and lossless current
        sensing, the bq25910 reduces printed circuit board (PCB) space and
        allows designers to use small 0.33-µH inductors, saving even more
        space.
    --  Faster charging: The bq25910 enables 95 percent charging efficiency,
        which could take a standard smartphone battery from empty to 70 percent
        charged in less than 30 minutes.
    --  Flexible system design: A differential battery-voltage sense line
        enables fast charging by bypassing parasitic resistance in the PCB for
        more accurate voltage measurements, even if the battery is placed away
        from the charger in the system.

Pricing, package and availability
All of these new devices are available today with pricing, package and evaluation module availability as listed in the following table.


                                UCC28780                       UCC24612             UCC28056                 bq25910
                                --------                       --------             --------                 -------

         Price                   US$0.60                        US$0.40              US$0.37                 US$2.10

          for
       1,000-unit
       quantities
       ----------

     Package type    Small outline integrated circuit   Small outline transistor
                    (SOIC) and quad flat no-lead (QFN)          (SOT)-23             SOT-23      Wafer chip-scale package (WCSP)
     ------------  ----------------------------------- -------------------------     ------      ------------------------------

      Evaluation
      module (EVM)           UCC28780EVM-002                 UCC24612-1EVM       UCC28056EVM-296         bq25910EVM-854
      ------------           ---------------                 -------------       ---------------         --------------

Learn more about TI's innovative portfolio of power ICs, tools and training

    --  Read a Power House blog post with details about TI's APEC experience.
    --  Learn about TI's flyback and synchronous rectifier controllers.
    --  Engineers can jump-start their high-voltage system design using the
        30-W/in3, 92% Efficiency, 65-W USB Type-C PD AC/DC Adapter Reference
        Design.

About Texas Instruments
Texas Instruments Incorporated (TI) is a global semiconductor design and manufacturing company that develops analog integrated circuits (ICs) and embedded processors. By employing the world's brightest minds, TI creates innovations that shape the future of technology. TI is helping approximately 100,000 customers transform the future, today. Learn more at www.ti.com.

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