Multiphase Vcore power management with PMBus interface
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.
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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; www.ti.com/tps53661-pr and www.ti.com/csd95372b-pr
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