Communications Power

Digital Multiphase VCore Power with PMBus and Smart Power Stage

Texas Instruments, Inc. (TI) today introduced a complete multiphase core voltage (Vcore) power management system solution for 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 a state-of-the-art, digital multiphase solution to power the latest Intel® Xeon® processors. The complete solution features industry-leading efficiency at up to 95-percent 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-mm by 6-mm package. Together, the products provide a complete multiphase Vcore system solution with superior transient performance, industry-benchmark telemetry accuracy and outstanding system reliability.

TPS53661, TPS53641 and TPS53631 key features and benefits include: TI's D-CAP+ architecture offers ultra-fast transient response. Its inherent design eliminates beat frequency. Dynamic current sharing and cycle-by-cycle current limit ensure robust multiphase regulator operation. Hybrid analog and digital topology delivers lowest quiescent power consumption, fastest dynamic performance and ultimate flexibility. And a small 5-mm by 5-mm package.

CSD95372B and CSD95373B key features and benefits include: Integrated current feedback with 3-percent accuracy eliminates the need for inductor dc resistance (DCR) sensing. High power density with best-in-class thermal performance. And an optimized package footprint with DualCool packaging option, facilities easy layout and enhanced heat sinking.

The multiphase Vcore power management solution is available in volume now from TI and its authorized distributors. The TPS53661, TPS53641 and TPS53631 dc-dc controllers are offered in a 40-pin QFN package and priced at US$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 US$1.05 and $0.90.

Texas Instruments Incorporated
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