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TPS53661

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6-Phase, D-CAP+™ Step-Down VR12.x Server CPU VCORE

Product details

Vin (min) (V) 4.5 Vin (max) (V) 20 Vout (min) (V) 0.5 Vout (max) (V) 2.5 Iout (max) (A) 240 Iq (typ) (mA) 10 Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 1000 Features Adjustable current limit, Dynamic Voltage Scaling, Enable, Light Load Efficiency, PMBus, Phase Interleaving, Power good, Pre-Bias Start-Up, Remote Sense, SVID, UVLO adjustable, Voltage Margining Operating temperature range (°C) -10 to 105 Regulated outputs (#) 1 Number of phases 6 Rating Catalog Control mode D-CAP+ Type Controller
Vin (min) (V) 4.5 Vin (max) (V) 20 Vout (min) (V) 0.5 Vout (max) (V) 2.5 Iout (max) (A) 240 Iq (typ) (mA) 10 Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 1000 Features Adjustable current limit, Dynamic Voltage Scaling, Enable, Light Load Efficiency, PMBus, Phase Interleaving, Power good, Pre-Bias Start-Up, Remote Sense, SVID, UVLO adjustable, Voltage Margining Operating temperature range (°C) -10 to 105 Regulated outputs (#) 1 Number of phases 6 Rating Catalog Control mode D-CAP+ Type Controller
WQFN (RSB) 40 25 mm² 5 x 5
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Special Note

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Technical documentation

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Type Title Date
* Data sheet 6-Phase, D-CAP+TM Step-Down VR12.x Server CPU VCORE datasheet 05 Jun 2014
Application note Multiphase Buck Design from Start to Finish, Part 1 (Rev. B) 07 Apr 2021
Application note D-CAP+TM Control for Multiphase Step-Down Voltage Regulators for Powering Microp 13 Jan 2019
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC 22 Feb 2016
Technical article Power Tips: How to set up a frequency response analyzer for Bode plot PDF | HTML 05 Sep 2015

Design & development

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Reference designs

PMP10393 — High Density 600mV 200 A 5-6 Phase DC-DC Buck Converter with PMBus Interface Reference Design

Advanced DCAP+ control is used to provide the high speed dynamic control needed for CPU, Memory and ASIC applications. Up to six high current synchronous power stages provide the high currents and low losses needed for these applications. Multi-phase also allows output ripple cancellation and (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP11208 — High Density 900mV 220 A 6 Phase DC-DC Buck Converter with PMBus Interface Reference Design

PMP11208 has same hardware as 1.0V PMP9738 and 0.6V PMP10393 but demonstrates operation at 900mV output up to 240 A off 11V, 12V and 13V inputs. While the design is in quasi fixed frequency mode for 1.0Vout and in fixed on time mode for 600mVout, it can be in either mode at 900mVout depending upon (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP9738 — High Density 200 A (255 A Peak) 6 Phase DC-DC Buck Converter with PMBus Interface Reference Design

Advanced DCAP+ control is used to provide the high speed dynamic control needed for CPU, Memory and ASIC applications. Six high current synchronous power stages provide the high currents and low losses needed for these applications. Multi-phase also allows output ripple cancellation and effective (...)
Test report: PDF
Schematic: PDF
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WQFN (RSB) 40 View options

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