Dual-channel D-CAP+, dual-channel (N+M<= 7 phases) step-down, multiphase controller with AVSBus


Product details


Iout (Max) (A) 280 Iq (Typ) (uA) 50000 Features Adjustable Current Limit, Dynamic Voltage Scaling, Enable, Frequency Synchronization, I2C, Light Load Efficiency, Multiple Outputs, Phase Interleaving, Power Good, Pre-Bias Start-Up, Remote Sense, Synchronous Rectification, UVLO Adjustable, Voltage Margining Operating temperature range (C) -40 to 125 Number of phases 7 Rating Catalog open-in-new Find other Buck controllers (external switch)

Package | Pins | Size

VQFN (RSL) 48 36 mm² 6 x 6 open-in-new Find other Buck controllers (external switch)


  • Input voltage range: 4.5 V to 17 V
  • Output voltage range: 0.25 V to 5.5 V
  • Per-phase switching frequency range: 300 kHz to 2000 kHz
  • Dual output supporting N+M phase configurations (N+M ≤ 7, M ≤ 3)
  • AVSBus compliant, per PMBus 1.3.1 part III
  • PMBus v1.3.1 system interface for configuration, control and telemetry of voltage, current, power, temperature, and fault status
  • Adaptive voltage scaling (AVS) through VOUT_COMMAND
  • Enhanced D-CAP+ control to provide super transient performance with excellent dynamic current sharing
  • Programmable loop compensation
  • Flexible phase-firing order
  • External pinstrap for Ch. A boot voltage settings
  • Individual phase current calibrations and reporting
  • Phase thermal balance management (TBM)
  • Full support for dynamic phase shedding (DPS)
  • Fast phase-adding for undershoot reduction (USR)
  • Body-diode braking for overshoot reduction (OSR)
  • Driverless configuration for efficient high-frequency switching
  • Fully Compatible with TI NexFET™ power stage for high-density solutions
  • Accurate, programmable adaptive voltage positioning (AVP)
  • Patented AutoBalance™ phase balancing
  • 6 mm × 6 mm, 48-pin, QFN package

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The TPS53676 is a step-down controller with dual channels, built-in non-volatile memory (NVM), and PMBus™ compatible serial interface, and is fully compatible with TI NexFET™ smart power stage. Advanced control features such as D-CAP+™ architecture provide fast transient response, low output capacitance, and good current sharing. The device also provides novel phase interleaving strategy and flexible firing sequences to improve thermal performance. Adjustable control of output voltage slew rate and voltage positioning are also supported. In addition, the device supports the PMBus communication interface for reporting the telemetry of voltage, current, power, temperature, and fault conditions to the system host. All programmable parameters can be configured by the serial interface and can be stored in NVM as the new default values to minimize the external component count.

The TPS53676 device if offered in a thermally enhanced 48-pin QFN packaged and is rated to operate from –40°C to 125°C.

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Technical documentation

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Type Title Date
* Data sheet TPS53676 Dual-Channel D-CAP+™, (N+M ≤ 7 Phases) Step-Down, Multiphase Controller with AVSBus and PMBus Interfaces datasheet (Rev. A) Jan. 13, 2021
User guide Using the TPS53676 step-down controller EVM Mar. 23, 2021
User guide TPS536C7 TRM Mar. 13, 2019

Design & development

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

Hardware development

document-generic User guide

The TPS53676EVM evaluation module (EVM) allows users to evaluate The TPS53676 controller.

The Controller is dual channel (6+0, 6+1 or 5+2 phases), D-CAP+ synchronous buck driverless control with PMBus Interface. The device operates using a voltage supply between 4.5 V and 17 V. The controller allows (...)

  • Configurable to 7+0, 6+1 or 5+2 phases
  • Test support for high power (250A) ASIC
  • Support for dynamic load
  • Thermal balance
  • Flexi-phase management

Software development

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.

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 (...)

Design tools & simulation

PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

Package Pins Download
VQFN (RSL) 48 View options

Ordering & quality

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