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TI unveils latest multiphase core voltage sol'ns

Posted: 14 Aug 2014 ?? ?Print Version ?Bookmark and Share

Keywords:Texas Instruments? Intel Xeon? processor? DC/DC controller? smart power stage?

Texas Instruments (TI) has unleashed what it says is a complete multiphase core voltage (Vcore) power management system solution aimed at enterprise servers, storage and high-end desktop applications. Compliant with Intel's VR12.5 and VR12 voltage regulation specifications, the TPS53661, TPS53641 and TPS53631 DC/DC controllers and CSD95372B and CSD95373B NexFET smart power stages are modern, digital multiphase solutions to power the latest Intel Xeon processors.

According to the company, the solutions feature industry-leading efficiency at up to 95 per cent in the smallest footprint. The TPS53661, TPS53641 and TPS53631 DC/DC controllers support 6-, 4- and 3-phase operation, respectively, and incorporate TI's advanced D-CAP+ control architecture and a feature-rich PMBus command set. The CSD95372B and CSD95373B synchronous buck NexFET smart power stage integrate an intelligent driver and power MOSFETs in a compact 5 x 6mm package. Together, the products provide a complete multiphase Vcore system solution with superior transient performance, industry-benchmark telemetry accuracy and outstanding system reliability, TI noted.

Multiphase Vcore solutions

The TPS53661, TPS53641 and TPS53631 feature TI's D-CAP+ architecture that promises to offer ultra-fast transient response and eliminates beat frequency. Dynamic current sharing and cycle-by-cycle current limit ensure robust multiphase regulator operation. In addition, hybrid analogue and digital topology delivers lowest quiescent power consumption, fastest dynamic performance and ultimate flexibility, stated the company. TI also said the devices are available in the industry's smallest 5 x 5mm package.

The CSD95372B and CSD95373B feature integrated current feedback with three per cent accuracy that eliminates the need for inductor DC resistance (DCR) sensing. The devices also boast high power density with best-in-class thermal performance, and flaunts an optimised package footprint with DualCool packaging option that facilities easy layout and enhanced heat sinking, indicated TI.

The multiphase Vcore power management solution is available in volume. The TPS53661, TPS53641 and TPS53631 DC/DC controllers are offered in a 40-pin QFN package and priced at $3.80, $3.30 and $2.80 in 1,000-unit quantities, respectively. The CSD95372BQ5M and CSD95373BQ5M NexFET smart power stages are offered in a 12-pin SON package and priced at $1.05 and $0.90.

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