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60V DC/DC converter boasts 90% power efficiency

Posted: 05 Aug 2011 ?? ?Print Version ?Bookmark and Share

Keywords:DC/DC converter? step-down regulator? MOSFET?

Texas Instruments Inc. (TI) has rolled out the TPS54062, a synchronous 50mA, 60V SWIFT step-down regulator with high efficiency and low noise performance that measures only 125mm2. The device incorporates high-side and low-side power MOSFETs that provide efficient power conversion and transient protection, TI stated. The DC/DC converter targets noise-sensitive industrial automation and sensor control, smart meter, telecom, computing and consumer designs.

The TPS54062 can withstand high-voltage transients up to 65V, while maintaining high efficiency across the load. For higher voltage transient protection, TI has released the TPS7A4001 50mA, 100V LDO that achieves an extremely fast settling time of less than 500ns for a 50V transient event, the company said.

According to TI, the device also supports a variety of TI embedded processor applications, including Stellaris ARM Cortex M MCUs, C5000 ultra-low power DSPs and ultra-low power MSP430 16bit MCU-based applications such as smart meter, building automation and security systems.

It operates in a temperature range of -40C to 150C with 90 percent efficiency at 24Vin and 5Vout at 150kHz. The device offers switching frequency range of 100C400kHz and a 20mm2 board space savings compared to competitive solutions. Additionally, the regulator can be synchronized to a clock via fixed frequency and has 89?A operating current with a shutdown current of only 1.7?A, added TI.

The TPS54062 is available from TI and authorized distributors in an 8-pin, 3 x 5mm MSOP PowerPad package. Suggested resale pricing is $1.50 in 1,000-unit quantities.

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