3.8-V to 17-V, 12-A synchronous SWIFT™ buck converter with D-CAP3 control


Product details


Vin (Min) (V) 3.8 Vin (Max) (V) 17 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 12 Iq (Typ) (uA) 600 Switching frequency (Min) (kHz) 400 Switching frequency (Max) (kHz) 1200 Features Adjustable Current Limit, Enable, Light Load Efficiency, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Forced PWM, Soft Start Adjustable Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

VQFN-HR (RNN) 18 12 mm² 3.5 x 3.50.9 open-in-new Find other Buck converters (integrated switch)


  • Integrated 13.5-mΩ and 4.5-mΩ MOSFETs
  • Supports 12-A continuous IOUT
  • 4.5-V start-up without external 5.0-V bias
  • 0.6-V ±-1% reference voltage across full temperature range
  • 0.6-V to 5.5-V output voltage range
  • Supports ceramic output capacitors
  • D-CAP3™ control mode for fast transient response
  • Selectable forced continuous conduction mode (FCCM) for tight output voltage ripple or auto-skipping Eco-mode for high light-load efficiency
  • Selectable FSW of 400 kHz, 800 kHz, and 1.2 MHz
  • Monotonic start-up into pre-biased outputs
  • Two adjustable current limit settings with hiccup re-start
  • Optional external 5-V bias for enhanced efficiency
  • Adjustable soft start with a default 1-ms soft start time
  • –40°C to 150°C operating junction temperature
  • Small 3.5-mm x 3.5-mm HotRod™ QFN package
  • Supported at the WEBENCH design tool
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The TPS56C215 is TI’s smallest monolithic 12-A synchronous buck converter with an adaptive on-time D-CAP3 control mode. The device integrates low RDS(on) power MOSFETs that enable high efficiency and offers ease-of-use with minimum external component count for space-conscious power systems. Competitive features include a very accurate reference voltage, fast load transient response, auto-skip mode operation for light load efficiency, adjustable current limit and no requirement for external compensation. A forced continuous conduction mode helps meet tight voltage regulation accuracy requirements for performance DSPs and FPGAs. The TPS56C215 is available in a thermally enhanced 18-pin HotRod QFN package and is designed to operate from –40°C to 150°C junction temperature.

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TPS568215 ACTIVE 4.5-V to 17-V, 8-A synchronous SWIFT™ buck converter with D-CAP3 control A pin-compatible product with lower current.
TPS56C230 ACTIVE 4.5-V to 18-V, 12-A synchronous SWIFT™ buck converter optimized for solution cost This product has a smaller 3-mm x 3-mm package that can enable lower total solution cost.

Technical documentation

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Type Title Date
* Data sheet TPS56C215 4.5-V to 17-V Input, 12-A Synchronous Step-Down Converter datasheet (Rev. D) Feb. 15, 2021
User guide TPS56C215 SWIFT™ Step-Down Converter Evaluation Module User's Guide (Rev. C) Jun. 24, 2021
Application note Measuring the Bode Plot for D-CAPx DC/DC Converters May 25, 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) Apr. 08, 2021
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application note Expand Minimum Input Voltage with External VCC Bias in Buck Converter Jan. 09, 2019
Application note DC/DC Point-of-load Power Solutions for Wired Networking Switch Systems Dec. 11, 2018
Application note Solve Point-of-Load Power Design Challenges: Single Board Computer Applications Aug. 24, 2018
Technical article How PMICs can help streamline FPGA power design challenges Jun. 23, 2018
Application note Reduced Size, Double Sided Layout for High-Current DC/DC Converters Apr. 05, 2018
Selection guide Control-Mode Quick Reference Guide (Rev. A) Sep. 14, 2017
Application note Understanding Eco-mode(TM) Operation Dec. 05, 2016
Application note Accuracy-Enhanced Ramp-Generation Design for D-CAP3 Modulation (Rev. A) Apr. 25, 2016

Design & development

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Hardware development

document-generic User guide

The TPS56C215EVM-762 is designed to help the user easily evaluate and test the operation and functionality of the TPS56C215 buck converter. The EVM converts a 3.8-V to 17-V input voltage to a regulated 1.2-V output voltage that delivers up to 12 A in a 3.5-mm x 3.5-mm QFN package. This board (...)

  • D-CAP3™ control mode for fast transient response and low external component count
  • Selectable forced continuous conduction mode (FCCM) or eco-mode
  • 1%, 600-mV reference voltage enables tight output voltage regulation accuracy over full operating temperature range

Design tools & simulation

SLVMBI9B.ZIP (361 KB) - PSpice Model
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
  • (...)

Reference designs

Integrated Power Supply Reference Design for Xilinx Zynq® UltraScale+™ ZU2CG−ZU5EV MPSoCs
TIDA-01480 The TIDA-01480 reference design is a scalable power supply designed to provide power to the Xilinx Zynq UltraScale+ (ZU+) family of MPSoC devices. The design receives power from a standard DC power supply and provides power to all rails of the Xilinx chipset and DDR memory through a well-defined (...)
document-generic Schematic document-generic User guide
DC-DC POL 12V In Dual 1.2V/10A Output Reference Design
PMP40071 — The PMP40071 is a POL module reference design suitable for DSP & FPGA applications with a DC input of 8.3V – 14V. Its ultra-high power density can help the power system to handle a high power delivery while keep a small profile. It provides a good design flexibility for different (...)
document-generic Schematic document-generic User guide
Industrial 15V – 42V VIN Power Reference Design With Dual VOUT of 1.2V@10A and 1V@10A
PMP15018 — The PMP15018 reference design incorporates the TPS54541 42V 5A DC/DC converter and two TPS56C215 17V, 12A DC/DC converters.  The solution operates from 15V to 42V input and generates 1.0V @10A and 1.2V@10A voltage rails.  The 1.0V and 1.2V converters operate at 1MHz and 400kHz respectively (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

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VQFN-HR (RNN) 18 View options

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