Home Power management AC/DC & DC/DC converters (integrated FET)
Home
Power management
AC/DC & DC/DC converters (integrated FET)

TPS54429

ACTIVE

7V to 18V Input, 4.5A Synchronous Step-Down DCAP2 Mode Converter

Order now
Data sheet

TPS54429

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -20 to 85 Topology Buck Type Converter Iout (max) (A) 4.5 Vin (min) (V) 7 Vin (max) (V) 18 Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Features Enable, Power good, Soft Start Adjustable, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.76 Vout (max) (V) 5.5 Iq (typ) (µA) 850 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -20 to 85 Topology Buck Type Converter Iout (max) (A) 4.5 Vin (min) (V) 7 Vin (max) (V) 18 Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Features Enable, Power good, Soft Start Adjustable, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.76 Vout (max) (V) 5.5 Iq (typ) (µA) 850 Duty cycle (max) (%) 98
HTSSOP (PWP) 14 32 mm² 5 x 6.4
  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VIN Input Voltage Range: 7 V to 18 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Highly Efficient Integrated FET’s Optimized
    for Lower Duty Cycle Applications
    – 63 mΩ (High Side) and 55 mΩ (Low Side)
  • High Efficiency, less than 10 µA at shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle By Cycle Over Current Limit
  • Power Good Output
  • APPLICATIONS
    • Wide Range of Applications for Low Voltage System
      • Digital TV Power Supply
      • High Definition Blu-ray Disc™ Players
      • Networking Home Terminal
      • Digital Set Top Box (STB)

SWIFT, D-CAP2, PowerPAD are trademarks of Texas Instruments.
Blu-ray Disc is a trademark of Blu-ray Disc Association.
  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VIN Input Voltage Range: 7 V to 18 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Highly Efficient Integrated FET’s Optimized
    for Lower Duty Cycle Applications
    – 63 mΩ (High Side) and 55 mΩ (Low Side)
  • High Efficiency, less than 10 µA at shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle By Cycle Over Current Limit
  • Power Good Output
  • APPLICATIONS
    • Wide Range of Applications for Low Voltage System
      • Digital TV Power Supply
      • High Definition Blu-ray Disc™ Players
      • Networking Home Terminal
      • Digital Set Top Box (STB)

SWIFT, D-CAP2, PowerPAD are trademarks of Texas Instruments.
Blu-ray Disc is a trademark of Blu-ray Disc Association.

The TPS54429 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54429 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54429 uses the D-CAP2™ mode control which provides a very fast transient response with no external compensation components. The TPS54429 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 7-V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable soft start time and a power good function. The TPS54429 is available in the 14-pin HTSSOP package, and designed to operate from –20°C to 85°C.

The TPS54429 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54429 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54429 uses the D-CAP2™ mode control which provides a very fast transient response with no external compensation components. The TPS54429 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 7-V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable soft start time and a power good function. The TPS54429 is available in the 14-pin HTSSOP package, and designed to operate from –20°C to 85°C.
filter Find other AC/DC & DC/DC converters (integrated FET)
Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Pin-for-pin with same functionality to the compared device
TPS54425 ACTIVE 4.5V to 18V Input, 4A Synchronous Step-Down Converter This product offers lower current (4 A).
TPS54525 ACTIVE 4.5V to 18V Input, 5.5-A Synchronous Step-Down Converter This product offers higher current (5.5 A).
Similar functionality to the compared device
TPS564257 ACTIVE 3-V to 17-V input voltage, 4-A FCCM mode, synchronous buck converter This product has smaller package and power good feature
TPS565247 ACTIVE 3-V to 16-V input voltage, 5-A FCCM mode, synchronous buck converter in SOT-563 package This product has smaller package and offers 5A current

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 3
Type Title Date
* Data sheet 7V to 18V Input, 4.5-A Synchronous Step-Down SWIFTTM Converter datasheet 19 Jan 2011
User guide TPS54429 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 01 Sep 2021
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

TPS54429EVM-608 — Evaluation Module for TPS54429 Synchronous Step-Down Converter with D-CAP2 Mode

The TPS54429EVM-608 is a fully assembled and tested circuit for evaluating the TPS54429 Synchronous Step-Down SWIFT Converter with D-CAP2 Mode. The TPS54429EVM-608 operates from a 7V to 18V input and provides a 1.05V output at 4.5A.
User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS54429 TINA-TI Transient Reference Design

SLVM375.TSC (655 KB) - TINA-TI Reference Design
Download
Simulation model

TPS54429 TINA-TI Transient Spice Model

SLVM376.ZIP (41 KB) - TINA-TI Spice Model
Download
Simulation model

TPS54429 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM126A.ZIP (42 KB) - PSpice Model
Download
Reference designs

TIDEP0067 — 66AK2Gx DSP + ARM Processor Power Solution Reference Design

This reference design is  based on the 66AK2Gx multicore System-on-Chip (SoC) processor and companion TPS65911 power management integrated circuit (PMIC) which includes power supplies and power sequencing for the 66AK2Gx processor in a single device. This power solution design also includes (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
HTSSOP (PWP) 14 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos