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TPS54227

ACTIVE

4.5 V to 18 V input, 2 A synchronous step-down converter in HSOP and VSON package

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TPS562211 ACTIVE 4.2-V to 18-V, 2-A, synchronous buck converter with 1% accuracy, PG/SS and PFM/forced-PWM in SOT583 This product has improved performance, selectable power good or soft start feature

Product details

Vin (min) (V) 4.5 Vin (max) (V) 18 Vout (min) (V) 0.76 Vout (max) (V) 7 Iout (max) (A) 2 Iq (typ) (mA) 0.8 Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Features Enable, Soft Start Adjustable, Synchronous Rectification Operating temperature range (°C) -40 to 85 Rating Catalog Regulated outputs (#) 1 Control mode D-CAP2 Duty cycle (max) (%) 65 Type Converter
Vin (min) (V) 4.5 Vin (max) (V) 18 Vout (min) (V) 0.76 Vout (max) (V) 7 Iout (max) (A) 2 Iq (typ) (mA) 0.8 Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Features Enable, Soft Start Adjustable, Synchronous Rectification Operating temperature range (°C) -40 to 85 Rating Catalog Regulated outputs (#) 1 Control mode D-CAP2 Duty cycle (max) (%) 65 Type Converter
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 VSON (DRC) 10 9 mm² 3 x 3
  • D-CAP2™ Mode Enables Fast Transient
    Response
  • Low Output Ripple and Allows Ceramic Output
    Capacitor
  • Wide VIN Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.76 V to 7 V
  • Highly-Efficient Integrated FETs Optimized
    for Lower Duty Cycle Applications
    • 155 mΩ (High-Side) and 108 mΩ (Low-Side)
  • High Efficiency, Less Than 10 µA at Shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft-Start
  • Prebiased Soft-Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle-By-Cycle Overcurrent Limit
  • D-CAP2™ Mode Enables Fast Transient
    Response
  • Low Output Ripple and Allows Ceramic Output
    Capacitor
  • Wide VIN Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.76 V to 7 V
  • Highly-Efficient Integrated FETs Optimized
    for Lower Duty Cycle Applications
    • 155 mΩ (High-Side) and 108 mΩ (Low-Side)
  • High Efficiency, Less Than 10 µA at Shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft-Start
  • Prebiased Soft-Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle-By-Cycle Overcurrent Limit

The TPS54227 device is an adaptive ON-time D-CAP2 mode synchronous buck converter. The TPS54227 enables system designers to complete the bus regulators for a suite of various end equipment with a cost-effective, low component count, low standby current solution. The main control loop for the TPS54227 uses the D-CAP2 mode control which provides a fast transient response with no external compensation components. The TPS54227 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft-start time. The TPS54227 is available in the 8-pin HSOP package and 10-pin VSON, and is designed to operate from –40°C to 85°C.

The TPS54227 device is an adaptive ON-time D-CAP2 mode synchronous buck converter. The TPS54227 enables system designers to complete the bus regulators for a suite of various end equipment with a cost-effective, low component count, low standby current solution. The main control loop for the TPS54227 uses the D-CAP2 mode control which provides a fast transient response with no external compensation components. The TPS54227 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft-start time. The TPS54227 is available in the 8-pin HSOP package and 10-pin VSON, and is designed to operate from –40°C to 85°C.

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Technical documentation

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Type Title Date
* Data sheet TPS54227 4.5-V to 18-V Input, 2-A SynchronousStep-Down Converter datasheet (Rev. C) PDF | HTML 30 Dec 2015
User guide TPS54227 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 27 Oct 2021
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note D-CAP2 Frequency Response Model, based on frequency domain analysis of Fixed On- 02 Jan 2013

Design & development

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

Evaluation board

TPS54227EVM-686 — Evaluation Module for TPS54227 Synchronous Step-Down Converter

The TPS54227EVM-686 is a fully assembled and tested circuit for evaluating the TPS54227 synchronous step-down converter. The TPS54227EVM-686 operates from a 4.5-V to 18-V input and provides a 1.05-V output up to 2-A load. The main control loop of TPS54227 uses D-CAP2™ mode control, which (...)

User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS54227 TINA-TI Transient Reference Design

SLVM384.TSC (654 KB) - TINA-TI Reference Design
Simulation model

TPS54227 TINA-TI Transient Spice Model

SLVM383.ZIP (41 KB) - TINA-TI Spice Model
Simulation model

TPS54227 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM145A.ZIP (43 KB) - PSpice Model
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 (...)
Reference designs

PMP7026 — 4.5V-18Vin, 3.3W Synchronous Step-down Reference Design

The PMP7026 reference design uses the TPS54227 synchronous step-down converter to generate a non-isolated output (3.3V @ 1A). Adaptive on-time D-CAP2 mode provides a fast transient response with no external compensation components.
Test report: PDF
Schematic: PDF
Reference designs

PMP6638 — Set Top Box Power Solution

This reference design is an example of power-trees inside a set-top-box. It performs DC-DC conversions, from 12V supply, for 1.0V/1.2V/1.8V/2.5V/3.3V/5V rails.
Test report: PDF
Schematic: PDF
Package Pins Download
HSOIC (DDA) 8 View options
VSON (DRC) 10 View options

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