SLUU194A May   2004  – March 2022 TPS51020

 

  1.   Trademarks
  2. 1Introduction
  3. 2Electrical Performance Specifications
    1. 2.1 Performance Specification Summary
  4. 3TPS51020EVM-001 Circuit Module Schematic
  5. 4Test Setup and Results
    1. 4.1 Test Setup
    2. 4.2 Power Up and Power Down
    3. 4.3 Efficiency and Power Loss
    4. 4.4 Output Ripple
    5. 4.5 Load Transient
    6. 4.6 Loop Characteristics
  6. 5Assembly Drawing and PCB Layout
  7. 6Circuit Module List of Materials
  8. 7References
  9. 8Revision History

1 Introduction

The TPS51020 is a multi-function dual-synchronous step-down controller. The part is specifically designed for high performance, high-efficiency applications where the loss associated with a current sense resistor is unacceptable. The TPS51020 uses feedforward voltage mode control to improve the line response. Efficiency at light load conditions can be maintained high as well by incorporating auto-skip operation. The TPS51020 can be used in the following:

  • Notebook computer system bus and I/O, DDR I, or DDR II termination applications
  • Distributed power and point-of-load regulation for DSPs, FPGAs, ASICs, and so forth
  • Servers
  • Base stations
  • Broadband, networking or optical communications systems

The TPS51020EVM−001 evaluation module (EVM) is a high-efficiency, dual synchronous buck converter providing 5 V at 6.0 A and 3.3 V at 6.0 A from an 8.0-V to 20-V input. The TPS51020 operates at 300 kHz with a peak efficiency of 94.8% with both channels enabled. This user’s guide describes the TPS51020EVM−001 performance in dual mode.