TI's smart AC/DC linear regulator achieves breakthrough in efficiency and power density

DALLAS, March 18, 2019 /PRNewswire/ -- Texas Instruments (TI) (NASDAQ: TXN) today expanded its broad portfolio of over 500 linear regulators by introducing a first-of-its-kind smart AC/DC linear regulator. With 75 percent higher efficiency and two times the power density of other linear regulators, this device achieves the best balance between high efficiency and ultra-low noise while shrinking power-supply size. The fully integrated TPS7A78 linear regulator uses a unique switched-capacitor architecture to eliminate discrete components, including external inductors and transformers and miniature circuit breakers and interrupters, for tamper-resistant designs in applications including electronic metering in grid infrastructure and building automation. For more information including samples, see www.ti.com/TPS7A78-pr.

TI will demonstrate the TPS7A78 linear regulator in booth No. 511 at the Applied Power Electronics Conference (APEC) in Anaheim, California, March 18-20, 2019. Read a short article about the newest innovations in power from TI at APEC, such as new products and end-to-end power-management system solutions including hardware, software and reference designs that can help engineers get to market quickly.

The TPS7A78 is a nonisolated linear regulator that delivers up to 0.5 W from AC to DC with smaller, fewer components. This smart design optimizes regulation through an active bridge, switch capacitor and integrated low-dropout regulator (LDO). This design results in higher efficiency and a reduced capacitor size compared to linear regulators in traditional capacitor-drop solutions utilizing a Zener diode. To learn more watch the video, "What is a smart AC/DC linear regulator?"

Key features and benefits of the TPS7A78

• Low standby power: A unique dynamic active bridge clamp pre-regulates the input voltage for optimal performance to reduce standby power to 10 mW, which is up to 75% lower compared to traditional capacitor-drop solutions.
• Higher power density: The switched-capacitor architecture eliminates up to 26 discrete components, including the bridge rectifier. This architecture reduces capacitor size by 25% compared to traditional capacitor-drop solutions.
• Tamper-proof design: The TPS7A78 is free of costly magnetic shielding, thus meeting the International Electrotechnical Commission (IEC) 61000-4-8 standard required by applications such as electronic metering. To see how power-supply designers can help meet system electromagnetic compatibility requirements using the TPS7A78, read the short article, "How to make a simple nonmagnetic AC/DC power supply."

Availability, packaging and pricing
Available through the TI store and authorized distributors, the TPS7A78 is offered in a 14-pin, 5-mm-by-6.5-mm thin-shrink small-outline package (TSSOP) and priced in small reels at US$1.00 in 1,000-unit quantities.

Find out more about TI's power portfolio

• Get more information on TI's linear regulators and all of TI's power management products.
• Download power management reference designs.
• Search for expert answers in the TI E2E™ Power Management forum.

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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SOURCE Texas Instruments

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