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Dc-to-dc Converter Integrates MOSFETS, Adaptive On-Time Control Mode

Dc-to-dc Converter Integrates MOSFETS, Adaptive On-Time Control Mode

Texas Instruments has introduced what is reportedly the industry’s smallest 12-A, synchronous DC/DC buck converter with PMBus interface. The SWIFT TPS53915 converter features a tiny PowerStack QFN package and integrated NexFET MOSFETS to drive ASICs in space-constrained and power-dense applications in various markets, including wired and wireless communications, enterprise/cloud computing and storage systems. Used in conjunction with TI's award-winning WEBENCH® online design tools, the TPS53915 simplifies power conversion and speeds the design process.

The highly integrated converter features 0.5 percent reference voltage accuracy to meet voltage requirements of deep sub-micron processors. D-CAP3 adaptive on-time control mode is easy to use, provides very fast load transient response and reduces external component count.  Programmability and fault reporting via PMBus simplifies power supply design and further reduces component count.

For analog applications without PMBus control, TI offers the SWIFT 8-A TPS53513 and 12-A TPS53515 pin-to-pin compatible buck converters.

The converter has Integrated high- and low-side MOSFETs support 12-A continuous output current. An on-chip PMBus interface simplifies power supply design. An Auto-skipping Eco-mode provides high light-load efficiency.

The converter is supplied in a 28-pin, 3.5 by 4.5 by 1 mm PowerStack QFN package features TI's NexFET power MOSFETs stacked on a grounded lead frame and connected using copper clips. The unique combination of stacking and bonding allows for a smaller, more integrated quad flat no-lead (QFN) package compared to other solutions that place MOSFETs side by side.

The TPS53915 DC/DC converter is available in volume now from TI and its authorized distributors and is priced at $3.51 in 1,000-unit quantities.  

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