TPS54429 (ACTIVE)

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

 

Recommended alternative parts

  • TPS54429E  -  Looking for a device with Eco-mode™? Try theTPS54429E.
  • TPS54525  -  Looking for a device with more output current? Try the TPS54525.
  • TPS54425  -  Looking for a device with less output current? Try the TPS54425.
  • TPS54531  -  Looking for a device with higher input voltage? Try theTPS54531.

Description

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.

Features

  • 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.

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Parametrics Compare all products in Buck Converter (Integrated Switch)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
TPS54429 TPS54225 TPS54226 TPS54325 TPS54326 TPS54425 TPS54426 TPS54429E TPS54525 TPS54526 TPS54625 TPS54626
7    4.5    4.5    4.5    4.5    4.5    4.5    7    4.5    4.5    4.5    4.5   
18    18    18    18    18    18    18    18    18    18    18    18   
0.76    0.76    0.76    0.76    0.76    0.76    0.76    0.76    0.76    0.76    0.76    0.76   
5.5    5.5    5.5    5.5    5.5    5.5    5.5    5.5    5.5    5.5    5.5    5.5   
4.5    2    2    3    3    4    4    4.5    5.5    5.5    6.5    6.5   
1    1    1    1    1    1    1    1    1    1    1    1   
700    700    700    700    700    700    700    700    650    650    650    650   
700    700    700    700    700    700    700    700    650    650    650    650   
0.85    0.8    0.8    0.85    0.85    0.85    0.85    0.85    0.9    0.9    0.95    0.95   
Enable
Power Good
Synchronous Rectification   
Enable
Power Good
Synchronous Rectification   
Enable
Light Load Efficiency
Power Good
Synchronous Rectification   
Enable
Power Good
Synchronous Rectification   
Enable
Light Load Efficiency
Power Good
Synchronous Rectification   
Enable
Power Good
Synchronous Rectification   
Enable
Light Load Efficiency
Power Good
Synchronous Rectification   
Enable
Light Load Efficiency
Power Good
Synchronous Rectification   
Enable
Power Good
Synchronous Rectification   
Enable
Light Load Efficiency
Power Good
Synchronous Rectification   
Enable
Power Good
Synchronous Rectification   
Enable
Light Load Efficiency
Power Good
Synchronous Rectification   
D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2    D-CAP2   
98    90    90    90    90    90    90    98    95    95    95    95   
-20 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -20 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
HTSSOP    HTSSOP    HTSSOP
VQFN   
HTSSOP    HTSSOP
VQFN   
HTSSOP    HTSSOP
QFN   
HTSSOP
QFN   
HTSSOP    HTSSOP
QFN   
HTSSOP    HTSSOP   
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WEBENCH® Designer TPS54429

  Min   Max Range
Vin  V 7.0 to 18.0V
Vout  V 0.765 to 5.5V
Iout  A ≤ 4.5A
Ambient Temp  °C -20 to 85°C


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