SLUU231A June   2006  – January 2022 TPS40074

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Description
    2. 1.2 Applications
    3. 1.3 Features
  3. 2TPS40074EVM-001 Electrical Performance Specifications
  4. 3Schematic
    1. 3.1 Adjusting Output Voltage (R5 and R6)
    2. 3.2 Using Remote Sense (J3)
    3. 3.3 5V Input Operation (R10 and R15)
  5. 4Test Setup
    1. 4.1 Equipment
      1. 4.1.1 Voltage Source
      2. 4.1.2 Meters
      3. 4.1.3 Loads
      4. 4.1.4 Recommended Wire Gauge
      5. 4.1.5 Other
    2. 4.2 Equipment Setup
      1. 4.2.1 Procedure
      2. 4.2.2 Diagram
    3. 4.3 Start-Up/Shutdown Procedure
    4. 4.4 Equipment Shutdown
  6. 5TPS40074EVM Typical Performance Data and Characteristic Curves
    1. 5.1 Efficiency
    2. 5.2 Line and Load Regulation
  7. 6EVM Assembly Drawings and Layout
  8. 7List of Materials
  9. 8Revision History

1.1 Description

The TPS40074EVM-001 is designed to use a regulated 12-V (between 10-V and 14-V) bus to produce a high current, regulated 1.5-V output at up to 15 A of load current. The TPS40074EVM-001 is design to demonstrate the TPS40074 in a typical regulated bus to low-voltage application while providing a number of test points to evaluate the performance of the TPS40074 in a given application. The EVM can be modified to support output voltages from 0.9 V to 3.3 V by changing a single resistor. The TPS40074EVM-001 has been built to the sample application used in the TPS40074 Midrange Input Synchronous Buck Controller With Voltage Feed-Forward Data Sheet, except the switching frequency has been lowered to 400 kHz to reduce switching losses in the power FETs, and the RKFF resistor (R10) increased to maintain the UVLO level.