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TPS54429

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

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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.
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Technical documentation

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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
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Simulation model

TPS54429 TINA-TI Transient Spice Model

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

TPS54429 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM126A.ZIP (42 KB) - PSpice Model
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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.

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