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TPS53667

ACTIVE

6-Phase, D-CAP+ step-down driverless buck controller with NVM and PMBus interface for ASIC

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Data sheet

TPS53667

ACTIVE
Data sheet Order now

Product details

Vin (Min) (V) 4.5 Vin (Max) (V) 17 Vout (Min) (V) 0.5 Vout (Max) (V) 2.5 Iout (Max) (A) 420 Iq (Typ) (uA) 6100 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, Synchronous Rectification, UVLO Adjustable, Voltage Margining Regulated outputs (#) 1 Number of phases 6 Rating Catalog
Vin (Min) (V) 4.5 Vin (Max) (V) 17 Vout (Min) (V) 0.5 Vout (Max) (V) 2.5 Iout (Max) (A) 420 Iq (Typ) (uA) 6100 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, Synchronous Rectification, UVLO Adjustable, Voltage Margining Regulated outputs (#) 1 Number of phases 6 Rating Catalog
WQFN (RTA) 40 36 mm² 6 x 6
  • 8-bit Selectable BOOT Voltage via Pinstrap or NVM: 0.5 V to 2.5 V (down to 5-mV Step)
  • 1-, 2-, 3-, 4-, 5-, or 6- 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 Per-Phase OCL 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
  • Compatible with CSD9549x NexFET Power Stages
  • 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
  • 8-bit Selectable BOOT Voltage via Pinstrap or NVM: 0.5 V to 2.5 V (down to 5-mV Step)
  • 1-, 2-, 3-, 4-, 5-, or 6- 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 Per-Phase OCL 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
  • Compatible with CSD9549x NexFET Power Stages
  • 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

The TPS53667 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 theNexFET power stages (CSD9549x). The TPS53667 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 controlfeatures such as D-CAP+ architecture with undershoot reduction (USR) and overshoot reduction (OSR)provide fast transient response, lowest output capacitance, and high efficiency. The TPS53667 also provides novel phase interleaving strategy and dynamic phase shedding for efficiency improvement at light loads. In addition, the TPS53667 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 orPMBus and stored in non-volatile memory to minimize the external component count.

The TPS53667 is offered in a space saving, thermally enhanced 40-pinQFN package and is rated to operate from –40°C to 125°C.

For all available packages, see the orderable addendum at the

The TPS53667 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 theNexFET power stages (CSD9549x). The TPS53667 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 controlfeatures such as D-CAP+ architecture with undershoot reduction (USR) and overshoot reduction (OSR)provide fast transient response, lowest output capacitance, and high efficiency. The TPS53667 also provides novel phase interleaving strategy and dynamic phase shedding for efficiency improvement at light loads. In addition, the TPS53667 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 orPMBus and stored in non-volatile memory to minimize the external component count.

The TPS53667 is offered in a space saving, thermally enhanced 40-pinQFN package and is rated to operate from –40°C to 125°C.

For all available packages, see the orderable addendum at the
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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
* Data sheet TPS53667 6-Phase, D-CAP+, Step-Down, Buck Controller with NVM and PMBus™ Interface for ASIC Power and High-Current Point-of-Load datasheet (Rev. B) PDF | HTML 10 Feb 2017
Application note Multiphase Buck Design from Start to Finish, Part 1 (Rev. B) 07 Apr 2021
Application note Optimizing High Side FET Voltage Ringing of Multiphase Voltage Regulators Part 2 19 Jul 2019
Application note Optimizing High Side FET Voltage Ringing of Multiphase Voltage Regulators Part 1 11 Jul 2019
Application note D-CAP+TM Control for Multiphase Step-Down Voltage Regulators for Powering Microp 13 Jan 2019
Technical article The D-CAP+™ Modulator: Evaluating the small-signal robustness 15 Nov 2017
Technical article Signal integrity in multiphase, smart power-stage applications 10 Oct 2017
Technical article Reducing solution size with PMBus in multi-rail systems 04 Nov 2016
EVM User's guide Using the TPS53667EVM-769 02 Aug 2016
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC 22 Feb 2016

Design & development

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

Evaluation board

TPS53667EVM-769 — TPS53667 6-Phase, DCAP+TM Step-Down Buck Controller Evaluation Module with PMBus Interface

The TPS53667EVM-769 evaluation module allows users to assess the operating characteristics of the TPS53667 controller with the CSD95490 smart power stages in a low voltage, high current, step-down point of load (POL) application with the configuration, control and monitoring functionality of the (...)

User guide: PDF
Not available on TI.com
Application software & framework

FUSION_DIGITAL_POWER_DESIGNER — Digital Power Software

Fusion Digital Power™ graphical user interface (GUI) software is 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.
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Application software & framework

FUSION_MFR_GUI — Fusion Digital Power Manufacturing Tool

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 (...)

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Simulation model

TPS53667 PSpice Transient Model

SLUM557.ZIP (198 KB) - PSpice Model
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Reference designs

PMP22510 — Switched capacitor integrated buck (SCIB) power converter reference design

This switched capacitor integrated buck (SCIB) converter is a highly-optimized design for use in a high-power, high-density single output power converter, operating from a wide-range 40-V to 60-V input rail to produce a 8.0-V, 5.0-V, 3.3-V or 1.8-V rail up to 40A of load current each phase. This (...)
Test report: PDF
Schematic: PDF
Package Pins Download
WQFN (RTA) 40 View options

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