SLUU381B September   2009  – February 2022 TPS51220A

 

  1.   Trademarks
  2. 1 Introduction
  3. 2 Description
    1. 2.1 Typical Applications
    2. 2.2 Features
  4. 3 Electrical Performance Specifications
  5. 4 Schematic
  6. 5 Test Setup
    1. 5.1 Test Equipment
    2. 5.2 Recommended Test Setup
    3. 5.3 List of Test Points
  7. 6 Test Procedure
    1. 6.1 Line/Load Regulation and Efficiency Measurement Procedure
    2. 6.2 Output Ripple Test
    3. 6.3 Measuring Improved Light Load Efficiency
    4. 6.4 Control Architecture and OVP Select
    5. 6.5 Overcurrent Trip Level and Output Discharge Select
  8. 7 Performance Data and Typical Characteristic Curves
    1. 7.1 Efficiency
    2. 7.2 Load Regulation
    3. 7.3 Bode Plot
    4. 7.4 Transient Response
    5. 7.5 Output Ripple and Switch Node
    6. 7.6 Turn-On Waveform
    7. 7.7 Turn-Off Waveform
  9. 8 EVM Assembly Drawing and PCB Layout
  10. 9 List of Materials
  11. 10Revision History

5.1 Test Equipment

Voltage Source: The power source must be capable of supplying 8 VDC to 20 VDC at up to 10 A.

Multimeters: A minimum of three voltage meters are required. Other voltage meters can be used to monitor some of the test points.

Output Load: Two constant current electronic loads are recommended. They must be able to sink up to 10 A when the output is 3.3 V or 5 V.

Oscilloscope: A minimum 50-MHz digital oscilloscope and a voltage probe is required. The scope can be used to measure output ripple and monitor some of the test points.

Fan: A fan is not required when testing the EVM.

Recommended Wire Gauge: Both loads and input should be connected using a minimum gauge wire of AWG#16. Also these connections should be kept as short as possible.