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TPS53647

ACTIVE
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4-Phase, D-CAP+TM Step-Down Buck Controller with NVM and PMBus Interface for ASIC

Data sheet
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4-Phase, D-CAP+TM Step-Down Buck Controller with NVM and PMBus Interface for ASIC

TPS53647

ACTIVE
Data sheet Order now

Product details

Parameters

Vin (Min) (V) 4.5 Vin (Max) (V) 17 Vout (Min) (V) 0.5 Vout (Max) (V) 2.5 Iout (Max) (A) 240 Regulated outputs (#) 1 Number of Phases 4 Switching frequency (Min) (kHz) 300 Switching frequency (Max) (kHz) 1000 Iq (Typ) (mA) 8 Features Adjustable Current Limit, Dynamic Voltage Scaling, Enable, Light Load Efficiency, Output Discharge, PMBus, Phase Interleaving, Power Good, Pre-Bias Start-Up, Remote Sense, Synchronous Rectification, UVLO Adjustable, Voltage Margining Duty cycle (Max) (%) 50 Operating temperature range (C) -40 to 125 Type Controller Rating Catalog Control mode D-CAP+ open-in-new Find other Buck controllers (external switch)

Package | Pins | Size

WQFN (RTA) 40 36 mm² 6 x 6 open-in-new Find other Buck controllers (external switch)

Features

  • 8-bit Selectable BOOT Voltage via Pinstrap or NVM: 0.5 V to 2.5 V (down to 5-mV Step)
  • 1-, 2-, 3-, or 4- Phase Operation
  • PMBus System Interface for Telemetry of Voltage, Current, Power, Temperature, and Fault Conditions
  • 1.8-V and 3.3-V PMBus Bias Compatible
  • Fault Reporting: Output Voltage, Output Current, and Temperature
  • Configurable with Non-Volatile Memory (NVM) or Resistor Pinstrap
  • 16 Levels of Programmable OCP with Pinstrap or NVM
  • Fast Transient with DCAP+Control
  • Optimized Efficiency at Light and Heavy Loads
  • Support Pre-Bias Startup
  • Phase Current Imbalance Detection and Reporting
  • 8 Independent Levels of Overshoot Reduction (OSR) and Undershoot Reduction (USR)
  • Driverless Configuration for Efficient High-Frequency Switching
  • Fully Compatible with CSD95372BQ5MC NexFET Power Stage
  • Accurate, Adjustable Voltage Positioning
  • 300-kHz to 1-MHz Frequency Selections with Closed-loop Frequency Control
  • Patented AutoBalance Phase Balancing
  • Uses TI’s Fusion Digital Power Designer GUI
  • Dynamic Phase Shedding with Programmable Current Threshold
  • Conversion Voltage Range: 4.5 V to 17 V
  • Small, 6 mm × 6 mm, 40-Pin, QFN, PowerPAD Package
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Description

The TPS53647 is a high-current, multi-phase, step-down controller. The device offers built-in non volatile memory (NVM) and PMBus interface. It is compatible with the NexFET power stages (CSD95372BQ5MC). The TPS53647 provides 8-bit BOOT voltage selection covering output voltage from 0.5 V to 2.5 V, with steps as small as 5 mV, which is ideal for high current application with accurate output voltage setting. Advanced control features such as D-CAP+ architecture with undershoot reduction (USR) and overshoot reduction (OSR) provide fast transient response, lowest output capacitance, and high efficiency. The TPS53647 also provides novel phase interleaving strategy and dynamic phase shedding for efficiency improvement at light loads. In addition, the TPS53647 supports the PMBus communication interface with systems for telemetry of voltage, current, power, temperature, and fault conditions. Some of the configurations can be programmed by pinstrap or PMBus and stored in non-volatile memory to minimize the external component count.

The TPS53647 is offered in a space saving, thermally enhanced 40-pin QFN package and is rated to operate from –40°C to 125°C.

For all available packages, see the orderable addendum at the open-in-new Find other Buck controllers (external switch)
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Similar but not functionally equivalent to the compared device:
TPS53681 ACTIVE Dual-Channel 6+2/5+3 D-CAP+TM Multiphase Step-Down Controller with PMBus and NVM Dual-Channel 6+2/5+3 D-CAP+™ multiphase step-down controller with PMBus and NVM. Has a total of 8 phases with max configuration as 6+2/5+3.

Technical documentation

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Type Title Date
* Datasheet TPS53647 4-Phase, D-CAP+, Step-Down, Buck Controller with NVM and PMBus™ Interface for ASIC Power and High-Current Point-of-Load datasheet (Rev. B) Feb. 10, 2017
Application notes Optimizing High Side FET Voltage Ringing of Multiphase Voltage Regulators Part 2 Jul. 19, 2019
Application notes Optimizing High Side FET Voltage Ringing of Multiphase Voltage Regulators Part 1 Jul. 11, 2019
Application notes Multiphase Buck Design from Start to Finish, Part 1 (Rev. A) May 24, 2019
Technical articles Minimize the impact of the MLCC shortage using D-CAP+™ control mode Apr. 05, 2019
Application notes D-CAP+TM Control for Multiphase Step-Down Voltage Regulators for Powering Microp Jan. 13, 2019
Selection guides DC/DC Buck Controller Solutions Selection Guide Feb. 06, 2018
Technical articles How to select the right power solution for your FPGA or PMIC Jan. 09, 2018
Technical articles The D-CAP+™ Modulator: Evaluating the small-signal robustness Nov. 15, 2017
Technical articles Simplifying loop compensation and poles and zeros calculations Mar. 18, 2016
Application notes SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC Feb. 22, 2016
User guides Using the PWR710 EVM:4-Phase D-CAP+ Step-Down DC-DC Analog with PMBus Interface (Rev. A) Jun. 23, 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$149.00
Description

The TPS53647EVM evaluation module (EVM) allows users to evaluate the TPS53647. TPS53647 is a 4-phase, D-CAP+TM step-down buck controller with PMBus interface for ASIC power or high current point of load. The default configuration of this EVM is 4-phase to demonstrate a typical 1V/120A output (...)

Features

 

  • Vin: 8-14V
  • Vout: 1.0V/120A
  • Support PMBus programming
  • 256 BOOT voltage selections with pin strap
  • High efficiency

 

 

View details

Software development

APPLICATION SOFTWARE & FRAMEWORKS Download
Digital Power Software
FUSION_DIGITAL_POWER_DESIGNER — Fusion Digital Power™  is the Graphical User Interface (GUI) used to configure and monitor select Texas Instruments digital power controllers and sequencer/health monitors. The application uses the PMBus protocol to communicate with the device over serial bus by way of a TI USB adapter.
Features

Some of the tasks you can perform with the GUI include:

  • Turn on or off the power supply output, either through the hardware control line or the PMBus OPERATION command
  • Monitor real-time data. Items such as input voltage, output voltage, output current, temperature, and warnings/faults are continuously (...)
View details
APPLICATION SOFTWARE & FRAMEWORKS Download
Fusion Digital Power Manufacturing Tool
FUSION_MFR_GUI — The Fusion Digital Power Manufacturing Tool (aka MFR GUI) is a Graphical User Interface used to download firmware, upgrade firmware, configure, calibrate and test .

The MFR GUI supports the same devices as Fusion Digital Power Designer software.  This tool is typically used in manufacturing (...)
Features

Some of the tasks the tool can perform include:

  • Download/Upgrade firmware
  • Program a device configuration
  • Calibrate a device (manually or instrumented via GPIB):
    • Input voltage (Vin)
    • Output voltage (Vout)
    • Output current (Iout)
    • Temperature
  • Test the device (validate power conversion falls within acceptable Vout (...)
View details

Design tools & simulation

SIMULATION MODELS Download
SLUM465B.ZIP (348 KB) - PSpice Model
SIMULATION MODELS Download
SLUM584.ZIP (56 KB) - IBIS Model

Reference designs

REFERENCE DESIGNS Download
4 Phase, 140 A Reference Design for Intel Stratix 10 GX FPGAs
PMP20176 — This reference design focuses on providing a compact, high-performance, multiphase solution suitable for powering Intel® Stratix® 10 GX field-programmable gate arrays (FPGAs) with a specific focus on the SG2800-I1V variant. Integrated PMBus™ allows for easy output voltage setting and (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
PMBus Power System for Enterprise Ethernet Switches Reference Design
PMP11399 — PMP11399 is a complete PMBus power system for 3 ASIC/FPGA cores, DDR3 core memory, VTT termination, and auxiliary voltages commonly found on high-performance Ethernet Switches. The hardware is accompanied by a GUI that allows the user to perform real-time configuration and monitoring of the power (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High Efficiency, Power Density 1V/120A/30A/30A (4+1+1) w/ PMBus Reference Design for ASIC Processors
PMP11184 — PMP11184 is a chipset solution for high current ASIC core rail regulation. It utilizes TPS53647 4-phase controller for 120A high current rail, which employs  DCAP+ control for fast transient response and TI's proprietary AutoBalance for tight steady and dynamic phase-to-phase current balance (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High Efficiency, Power Density 4-Phase 1V/120A PMBus Interface Reference Design for ASIC Processors
PMP11312 — The PMP11312 reference design is a 4-phase PMBus converter for high current ASIC core rail regulation. It utilizes TPS53647 4-phase controller for 120A high current rail, which employs  DCAP+ control for fast transient response and TI's proprietary AutoBalance for tight steady and dynamic (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High efficiency scalable 3-phase 1V/90A PMBus power supply for ASIC core rails
PMP10962 — The PMP10962 reference design is a 3-phase PMBus converter for high current ASIC core rail regulation. It employs  DCAP+ control for fast transient response and TI's proprietary AutoBalance for tight steady and dynamic phase-to-phase current balance. It drives three TI NexFET smart power stages (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
WQFN (RTA) 40 View options

Ordering & quality

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Training series

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Videos

Testing a Multiphase Regulator in the Lab

Carmen Parisi explains how to test a multiphase buck regulator in the lab.

Posted: 01-Jan-2017
Duration: 06:07

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