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Buck converters (integrated switch)

TPS53915

ACTIVE

1.5-V to 18-V, 12-A synchronous SWIFT™ buck converter with PMBus

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Data sheet

TPS53915

ACTIVE
Data sheet Order now

Product details

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 Rating Catalog Regulated outputs (#) 1 Control mode D-CAP3 Duty cycle (Max) (%) 80
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 Rating Catalog Regulated outputs (#) 1 Control mode D-CAP3 Duty cycle (Max) (%) 80
VQFN-CLIP (RVE) 28 16 mm² 4.5 x 3.5
  • 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
  • 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

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.

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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Pin-for-pin with same functionality to the compared device.
TPS548A20 ACTIVE 1.5-V to 20-V, 15-A synchronous SWIFT™ buck converter Offers a wider VIN and temperature range with a higher current and frequency synchronization.
Same functionality with different pin-out to the compared device.
TPS53515 ACTIVE 1.5-V to 18-V, 12-A synchronous SWIFT™ buck converter Offers same functionality without PMBus.

Technical documentation

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Type Title Date
* Data sheet 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) PDF | HTML 08 Dec 2014
User guide TPS53915 Step-Down Converter Evaluation Module User's Guide (Rev. C) PDF | HTML 08 Nov 2021
Application note DC/DC Converter Solutions for Hardware Accelerators in Data Center Applications (Rev. A) PDF | HTML 04 May 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Application note Point-of-Load Solutions for Data Center App Implementing VR13.HC Vccin Spec (Rev. A) PDF | HTML 08 Jan 2020
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
Selection guide SWIFT DC/DC Converters Selector Guide (Rev. G) 06 Feb 2019
Application note Unified Ground Connection Recommendation on TPS53K- Integrated FET-Converter Dev 25 Jan 2017
Application note Accuracy-Enhanced Ramp-Generation Design for D-CAP3 Modulation (Rev. A) 25 Apr 2016
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC 22 Feb 2016
White paper Choosing the Right Variable Frequency Buck Regulator Control Strategy 02 Oct 2015
Technical article Select the correct PMBus POL solution for your application 03 Aug 2015
Application note Not All Jitter Is Created Equal (Rev. A) 04 Jul 2015
Technical article D-CAP3 – A sequel better than the original 07 May 2015
Technical article PMBus – what is the value anyway? 18 Mar 2015
Application note D-CAP(TM) Mode With All-Ceramic Output Capacitor Application 03 Feb 2011

Design & development

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

Evaluation board

TPS53915EVM-587 — TPS53915EVM-587 Single Synchronous Step-Down Converter Evaluation Module

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 (...)

User guide: PDF | HTML
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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Simulation model

TPS53915 PSpice Transient Model

SLUM411.ZIP (129 KB) - PSpice Model
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Simulation model

TPS53915 TINA-TI Startup Transient Reference Design (Rev. A)

SLUM412A.TSC (235 KB) - TINA-TI Reference Design
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Simulation model

TPS53915 TINA-TI Steady State Transient Reference Design

SLUM556.TSC (239 KB) - TINA-TI Reference Design
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Simulation model

TPS53915 TINA-TI Transient Spice Model (Rev. A)

SLUM413A.ZIP (77 KB) - TINA-TI Spice Model
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Calculation tool

TPS53513 TPS53515 TPS53915 Excel Calculator and Layout Checklist

SLURB03.ZIP (877 KB)
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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

PMP10961 — 12Vinput 1.2V/10A High Power Density, PMBus Step-Down DC-DC Converter Reference Design

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 (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP9703 — PMBus Controlled Voltage Regulator for Enterprise Storage SSD ASIC Controller Reference Design

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 (...)
Test report: PDF
Schematic: PDF
Package Pins Download
VQFN-CLIP (RVE) 28 View options

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