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

2 Description

The TPS51220A EVM-476 provides two 8-A outputs: 3.3 V and 5 V. It accepts an input voltage from 8 V to 20 V. Several jumpers and switches allow the user to evaluate various control functions of the TPS51220A. Switches provide an easy method to enable and disable the EVM or each of the two outputs independently. Two jumper blocks allow the user to select the mode of operation of each output. One jumper block allows the engineer to select the control architecture and OVP function. One block allows for selection of overcurrent trip level and if the output is discharged by the converter. See the following sections for more details.