SLVSAY5D July   2011  – August 2016 TPS54527

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 Timing Requirements
    7. 6.7 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 Soft Start and Pre-Biased Soft Start
      2. 7.3.2 Current Protection
      3. 7.3.3 UVLO Protection
      4. 7.3.4 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 PWM Operation
      2. 7.4.2 PWM Frequency and Adaptive On-Time Control
  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 Consideration
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 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™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.76 V to 6 V
  • Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications: 65 mΩ (High Side) and 36 mΩ (Low Side)
  • High Efficiency: Less Than 10 µA at Shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Prebiased Soft Start
  • 650-kHz Switching Frequency
  • Cycle-by-Cycle Overcurrent Limit

2 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)

3 Description

The TPS54527 is an adaptive on-time D-CAP2 mode synchronous buck converter. The TPS54527 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 TPS54527 uses the D-CAP2 mode control which provides a fast transient response with no external compensation components. The TPS54527 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 a 4.5-V to 18-V input. The output voltage can be programmed from 0.76 V to 6 V. The device also features an adjustable soft-start time. The TPS54527 is available in the 8-pin DDA package, and designed to operate from –40°C to 85°C.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS54527 SO PowerPAD (8) 4.89 mm × 3.90 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

TPS54527 FP_DS_lvsay5.gif

Load Transient Response

TPS54527 respons_lvsay5.gif