DC/DC controllers offer multiphase power management with PMBus interface

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By eeNews Europe

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 efficiency at up to 95% in the smallest footprint.

The three DC/DC controllers support 6-, 4- and 3-phase operation respectively, and incorporate TI’s advanced D-CAP+ control architecture and a 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 6-mm package. Together, the products provide a complete multiphase Vcore system solution with superior transient performance, highest telemetry accuracy and system reliability.

TI says its D-CAP+ architecture offers ultra-fast transient response, with a design that eliminates beat frequency; dynamic current sharing and cycle-by-cycle current limit ensure robust multiphase regulator operation. The hybrid analogue and digital topology delivers low quiescent power consumption, fast dynamic performance and flexibility.

The CSD95372B and CSD95373B have integrated current feedback with 3% accuracy that eliminates the need for inductor DC resistance (DCR) sensing. They offer high power density with thermal performance; an optimised package footprint with DualCool packaging option, helps with easy layout and enhanced heat sinking.

TPS53661, TPS53641 and TPS53631 DC/DC controllers, in 40-pin QFN package, are priced at $3.80, $3.30 and $2.80 (1000), respectively. CSD95372BQ5M and CSD95373BQ5M NexFET smart power stages, in a 12-pin SON package, are priced at $1.05 and $0.90.

TI; and


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