Industry’s highest power efficiency in the smallest package

15th October 2013

Nat Bowers

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Texas Instruments has added three power management modules to its SIMPLE SWITCHER family, including the 10 A LMZ31710, which provides the industry’s highest power efficiency in the smallest package, up to 50-percent smaller than similar solutions. The easy-to-use power modules drive power-dense applications in a variety of markets including industrial, communications infrastructure, medical, and test and measurement.

Used in conjunction with TI's award-winning WEBENCH online design tool, the power modules simplify DC-DC conversion and speed the design process.

The 10-A LMZ31710, 7-A LMZ31707 and 4-A LMZ31704 integrated power solutions combine a DC-DC converter with power MOSFETs, a shielded inductor and passives into a low-profile QFN package, providing a complete power management solution with as few as three external components. The modules combine the power efficiency of a synchronous switching regulator at greater than 95 percent with the simplicity of a linear regulator, while eliminating loop compensation design, inductor selection and complex layout placement challenges. Each device is pin-to-pin compatible and features precision enable and soft-start pins, and current sharing for easy scalability from 4 A to 60 A.

The products join TI’s portfolio of 50 SIMPLE SWITCHER power modules that include the 3-A LMZ14203 and 2.5-A LMZ35003 for wide-input voltage applications.

LMZ31710/07/04 key features and benefits:

Complete solution size measures as small as 195 mm² with as few as three external components,
Achieves greater than 95-percent efficiency with excellent power dissipation and low thermal impedance of 13.3 degrees C per watt, requiring no de-rating across most input and output voltages,
Compliant to EN55022 Class B electromagnetic emissions standard for low EMI noise,
Very small 10-mm by 10-mm by 4.3-mm QFN package is easy to solder onto a printed circuit board.

TI's award-winning portfolio of SIMPLE SWITCHER products includes over 385 easy-to-use power modules, regulators and controllers. Supporting input voltage ranges of 3 V to 75 V, the products are pin-to-pin compatible and are fully functional in TI's WEBENCHPower Designer, Power Architect and FPGA Power Architect design and prototyping tools.

Availability and pricing

The SIMPLE SWITCHER power modules are available in volume now from TI and its authorized distributors. The 10-A LMZ31710 is priced at US$8.95 in 1,000-unit quantities, the 7-A LMZ31707 is US$6.50 and the 4-A LMZ31704 is $US5.25.