SLVS400D August   2001  – January 2015 TPS54611 , TPS54612 , TPS54613 , TPS54614 , TPS54615 , TPS54616

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 Recommended Operating Conditions
    3. 6.3 Thermal Information
    4. 6.4 Dissipation Ratings
    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  Undervoltage Lock Out (UVLO)
      2. 7.3.2  Slow-Start and Enable (SS/ENA)
      3. 7.3.3  VBIAS Regulator
      4. 7.3.4  Voltage Reference
      5. 7.3.5  Oscillator and PWM Ramp
      6. 7.3.6  Error Amplifier
      7. 7.3.7  PWM Control
      8. 7.3.8  Dead-Time Control and MOSFET Drivers
      9. 7.3.9  Overcurrent Protection
      10. 7.3.10 Thermal Shutdown
      11. 7.3.11 Powergood (PWRGD)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Continuous Conduction Mode
  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 Component Selection
        2. 8.2.2.2 Input Filter
        3. 8.2.2.3 Feedback Circuit
        4. 8.2.2.4 Operating Frequency
        5. 8.2.2.5 Output Filter
      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 Related DC - DC Products
    2. 11.2 Related Links
    3. 11.3 Trademarks
    4. 11.4 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • 30-mΩ, 12-A Peak MOSFET Switches for High Efficiency at 6-A Continuous Output Source and Sink
  • 0.9-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V Fixed Output Voltage Devices With 1.0% Initial Accuracy
  • Internally Compensated for Easy Use and Minimal Component Count
  • Fast Transient Response
  • Wide PWM Frequency − Fixed 350 kHz, 550 kHz or Adjustable 280 kHz to 700 kHz
  • Load Protected by Peak Current Limit and Thermal Shutdown
  • Integrated Solution Reduces Board Area and Total Cost

2 Applications

  • Low-Voltage, High-Density Systems With Power Distributed at 5 V or 3.3 V
  • Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors
  • Broadband, Networking and Optical Communications Infrastructure
  • Portable Computing/Notebook PCs

3 Description

The SWIFT™ family of dc/dc regulators, the TPS54611, TPS54612, TPS54613, TPS54614, TPS54615 and TPS54616 low-input voltage high-output current synchronous-buck PWM converters integrate all required active components. Included on the substrate are true, high-performance, voltage error amplifiers that provide high performance under transient conditions; an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 3 V; an internally and externally set slow-start circuit to limit in-rush currents; and a powergood output useful for processor/logic reset, fault signaling, and supply sequencing.

The TPS5461x devices are available in a thermally enhanced 28-pin TSSOP (PWP) PowerPAD™ package, which eliminates bulky heatsinks. TI provides evaluation modules and the SWIFT™ designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.

Device Information(1)

PART NUMBER PACKAGE OUTPUT VOLTAGE
TPS54611 HTSSOP (28) 0.9 V
TPS54612 1.2 V
TPS54613 1.5 V
TPS54614 1.8 V
TPS54615 2.5 V
TPS54616 3.3 V
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Simplified Schematic

Header_Schem_SLVS400C.gif

Efficiency at 350 kHz

Header_Chart_SLVS400C.gif