TPS53915

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1.5V to 18V Input (4.5V to 25V Bias), 12-A Synch Step-Down SWIFT™ Converter w/ PMBus™

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Product details

Parameters

Vin (Min) (V) 1.5 Vin (Max) (V) 18 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 12 Iq (Typ) (uA) 1350 Switching frequency (Min) (kHz) 250 Switching frequency (Max) (kHz) 1000 Features Enable, Light Load Efficiency, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Voltage Margining, Adaptive/Dynamic Voltage Scaling, Soft Start Adjustable, I2C/PMBus, Over Current Protection, UVLO Adjustable, Adjustable Current Limit Operating temperature range (C) -40 to 85 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

VQFN-CLIP (RVE) 28 16 mm² 4.5 x 3.5 open-in-new Find other Buck converters (integrated switch)

Features

  • Integrated 13.8- and 5.9-mΩ MOSFETs Support
    12-A Continuous Output Current
  • Adjustments Available Through PMBus™
    • Voltage Margin and Adjustment
    • Soft-Start Time
    • Power-On Delay
    • VDD UVLO Level
    • Fault Reporting
    • Switching Frequency
    • Supports All Ceramic Output Capacitors
    • Reference Voltage 600 mV ±0.5% Tolerance
    • Output Voltage Range: 0.6 V to 5.5 V
    • D-CAP3™ Control Mode With Fast Load-Step
      Response
    • Auto-Skipping Eco-Mode™ for High Light-
      Load Efficiency
    • FCCM for Tight Output Ripple and Voltage
      Requirements
    • Eight Selectable Frequency Settings from
      200 kHz to 1 MHz
    • 3.5 mm × 4.5 mm, 28-Pin, QFN Package
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Description

The TPS53915 is a small-sized, synchronous buck converter with an adaptive on-time D-CAP3 control mode. The device offers ease-of-use and low external-component count for space-conscious power systems.

This device features high-performance integrated MOSFETs, accurate 0.5% 0.6-V reference, and an integrated boost switch. Competitive features include very-low external-component count, fast load-transient response, auto-skip mode operation, internal soft-start control, and no requirement for compensation. The device also features programmability and fault report via PMBus™ to simplify the power supply design.

A forced continuous conduction mode helps meet tight voltage regulation accuracy requirements for performance DSPs and FPGAs. The TPS53915 is available in a 28-pin QFN package and is specified from –40°C to 85°C ambient temperature.

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Technical documentation

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Type Title Date
* Datasheet TPS53915 1.5 to 18-V (4.5 to 25-V Bias) Input, 12-A Synchronous Step-Down SWIFT™ Converter With PMBus™ datasheet (Rev. B) Dec. 08, 2014
Selection guide Buck Converter Quick Reference Guide (Rev. A) Mar. 31, 2020
Application note DC/DC Converter Solutions for Hardware Accelerators in Data Center Applications Aug. 14, 2019
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application note Non-isolated point-of-load solutions for VR13.HC in rack server & datacenter app Mar. 05, 2019
Selection guide SWIFT DC/DC Converters Selector Guide (Rev. G) Feb. 06, 2019
Application note Unified Ground Connection Recommendation on TPS53K- Integrated FET-Converter Dev Jan. 25, 2017
Application note Accuracy-Enhanced Ramp-Generation Design for D-CAP3 Modulation (Rev. A) Apr. 25, 2016
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC Feb. 22, 2016
White paper Choosing the Right Variable Frequency Buck Regulator Control Strategy Oct. 02, 2015
Technical articles Select the correct PMBus POL solution for your application Aug. 03, 2015
Application note Not All Jitter Is Created Equal (Rev. A) Jul. 04, 2015
Technical articles D-CAP3 – A sequel better than the original May 07, 2015
Technical articles PMBus – what is the value anyway? Mar. 18, 2015
User guide TPS53915 High-Efficiency 12-A Synchronous-Buck Converter with PMBus and Eco-Mode (Rev. B) Feb. 03, 2014
Application note D-CAP(TM) Mode With All-Ceramic Output Capacitor Application Feb. 03, 2011

Design & development

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

Hardware development

EVALUATION BOARD Download
49
Description

The TPS53915EVM-587 is designed to help the user easily evaluate and test the operation and functionality of the TPS53915 buck converter. The EVM converts a 1.5-V to 18-V input voltage to a regulated 1.2-V output voltage that delivers up to 12 A in a 4.5x3.5mm QFN package. This board includes (...)

Features
  • D-CAP3™ control for fast transient response and low external component count
  • 0.5%, 600-mV reference voltage enables tight output voltage regulation accuracy
  • Output voltage margining and fault reporting via PMBus

Software development

APPLICATION SOFTWARE & FRAMEWORK 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 (...)

Design tools & simulation

SIMULATION MODEL Download
SLUM411.ZIP (129 KB) - PSpice Model
SIMULATION MODEL Download
SLUM412A.TSC (235 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SLUM413A.ZIP (77 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SLUM556.TSC (239 KB) - TINA-TI Reference Design
SIMULATION TOOL Download
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 (...)
Features
  • 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
  • (...)

Reference designs

REFERENCE DESIGNS Download
12Vinput 1.2V/10A High Power Density, PMBus Step-Down DC-DC Converter Reference Design
PMP10961 The PMP10961 is a high power density, 10A buck converter with PMBus interface. The layout is optimized for small form factor utilizing both sides of board and fits in a 0.6"x0.78" area. It enables 86.5% efficiency at 10Vin, 1.2V/10Aout, 400kHz. Due to DCAP3 control mode, it also provides fast load (...)
document-generic Schematic
REFERENCE DESIGNS Download
PMBus Controlled Voltage Regulator for Enterprise Storage SSD ASIC Controller Reference Design
PMP9703 The PMP9703 reference design uses the TPS53915 12A PMBus SWIFT step down converter to provide complete voltage regulation, and system protection of an Enterprise Storage SSD Controller ASIC typically used to control and expand traffic flow in/out of SSDs. The output voltage can be dynamically (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
VQFN-CLIP (RVE) 28 View options

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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