SLUU943A May   2012  – December 2021 TPS53014

 

  1. Introduction
  2. Description
    1. 2.1 Typical Applications
    2. 2.2 Features
  3. Electrical Performance Specifications
  4. Schematic
  5. Test Setup
    1. 5.1 Test Equipment
    2. 5.2 Recommended Test Setup
  6. Configurations
    1. 6.1 Enable/Disable Switch S1
  7. Test Procedure
    1. 7.1 Line/Load Regulation and Efficiency Measurement Procedure
    2. 7.2 List of Test Points
    3. 7.3 Equipment Shutdown
  8. Performance Data and Typical Characteristic Curves
    1. 8.1 Efficiency
    2. 8.2 Load Regulation
    3. 8.3 Line Regulation
    4. 8.4 Load Transient
    5. 8.5 Output Ripple
    6. 8.6 Switching Node
    7. 8.7 Enable Start-Up
    8. 8.8 Disable
    9. 8.9 Thermal Image
  9. EVM Assembly Drawing and PCB Layout
  10. 10List of Materials
  11. 11Revision History

Test Equipment

Voltage Source:

  • VIN: The input voltage source, VIN, should be a 0-V to 30-V variable DC source capable of supplying 2 ADC. Connect VIN to J1 as shown in Figure 5-2.

Multimeters:

  • V1: VIN at TP1 (VIN) and TP2 (GND), 0-V to 30-V voltmeter
  • V2: VOUT at TP7 (VOUT) and TP8 (GND)
  • A1: VIN input current, 0-ADC to 2-ADC Ammeter

Output Load: The output load should be an electronic constant resistance mode load capable of 0 ADC to 8 ADC at 1.05 V.

Oscilloscope: A digital or analog oscilloscope can be used to measure the output ripple. The oscilloscope should be set for the following:

  • 1-MΩ impedance
  • 20-MHz bandwidth
  • AC coupling
  • 1-µs/division horizontal resolution
  • 50-mV/division vertical resolution
Test points TP7 and TP8 can be used to measure the output ripple voltage by placing the oscilloscope probe tip through TP7 and holding the ground barrel on TP8 as shown in Figure 5-1. Using a leaded ground connection may induce additional noise due to the large ground loop.

GUID-646E981E-78C9-45B5-AA8A-3CF38438918F-low.gifFigure 5-1 Tip and Barrel Measurement for VOUT Ripple

Fan: Some of the components in this EVM may approach temperatures of 85°C during operation. A small fan capable of 200 LFM to 400 LFM is recommended to reduce component temperatures while the EVM is operating. The EVM should not be probed while the fan is not running.

Recommended Wire Gauge:

  • VIN to J1: The recommended wire size is 1x AWG #16 per input connection, with the total length of wire less than four feet (2 feet input, 2 feet return).
  • J2 to LOAD: The minimum recommended wire size is 1x AWG #16, with the total length of wire less than four feet (2 feet output, 2 feet return)