SLVSB01D October   2011  – August 2016 TPS54295

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 PWM Operation
      2. 7.3.2 PWM Frequency and Adaptive On-Time Control
      3. 7.3.3 Auto-Skip Eco-Mode Control
      4. 7.3.4 Soft Start and Prebiased Soft Start
      5. 7.3.5 Overcurrent Protection
      6. 7.3.6 Overvoltage and Undervoltage Protection
      7. 7.3.7 UVLO Protection
      8. 7.3.8 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation
      2. 7.4.2 Eco-Mode Operation
      3. 7.4.3 Standby Operation
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Output Voltage Resistors Selection
        2. 8.2.2.2 Output Filter Selection
        3. 8.2.2.3 Input Capacitor Selection
        4. 8.2.2.4 Bootstrap Capacitor Selection
        5. 8.2.2.5 VREG5 Capacitor Selection
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Considerations
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Community Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • D-CAP2™ Control Mode
    • Fast Transient Response
    • No External Parts Required For Loop Compensation
    • Compatible With Ceramic Output Capacitors
  • Wide Input Voltage Range : 4.5 V to 18 V
  • Output Voltage Range : 0.76 V to 7 V
  • Highly Efficient Integrated FETs Optimized for Low Duty Cycle Applications
    • 150 mΩ (High-Side) and 100 mΩ (Low-Side)
  • High Initial Reference Accuracy
  • Low-Side rDS(ON) Lossless Current Sensing
  • Adjustable Soft Start
  • Non-Sinking Prebiased Soft Start
  • 700-kHz Switching Frequency
  • Cycle-by-Cycle Overcurrent Limit Control
  • OCL, OVP, UVP, UVLO, and TSD Protections
  • Adaptive Gate Drivers With Integrated Boost PMOS Switch
  • OCP Constant Due to Thermally Compensated rDS(ON) With 4000 ppm/℃
  • 16-Pin HTSSOP, 16-pin VQFN
  • Auto-Skip Eco-mode™ for High Efficiency at Light Load

2 Applications

  • Point-of-Load Regulation in Low Power Systems for Wide Range of Applications
    • Digital TV Power Supplies
    • Networking Home Terminals
    • Digital Set Top Boxes (STB)
    • DVD Players and Recorders
    • Gaming Consoles and Other

3 Description

The TPS54295 is a dual, adaptive on-time D-CAP2 mode synchronous buck converter. The TPS54295 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, and low standby current solution. The main control loops of the TPS54295 use the D-CAP2 mode control which provides a very fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode operation at light loads. Eco-mode allows the TPS54295 to maintain high efficiency during lighter load conditions. The TPS54295 is able to adapt to both low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device provides convenient and efficient operation with input voltages from 4.5 V to 18 V.

The TPS54295 is available in a 4.4 mm × 5 mm 16-pin HTSSOP (PWP) package and 4 mm x 4 mm 16-pin VQFN (RSA) package, designed to operate at an ambient temperature range from –40°C to 85°C.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS54295 HTSSOP (16) 5.00 mm × 4.40 mm
VQFN (16) 4.00 mm × 4.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Load Transient Response

TPS54295 FP_art2_lvsb01.gif