SLUUBG8C November   2018  – October 2021 UCC20520 , UCC21320-Q1 , UCC21520 , UCC21520-Q1 , UCC21521 , UCC21530

 

  1.   Trademarks
  2. 1 Introduction
  3. 2 Description
  4. 3 Features
    1. 3.1 I/O Description
    2. 3.2 Jumpers (Shunt) Setting
  5. 4 Electrical Specifications
  6. 5 Test Summary
    1. 5.1 Definitions
    2. 5.2 Equipment
      1. 5.2.1 Power Supplies
      2. 5.2.2 Function Generators
    3. 5.3 Equipment Setup
      1. 5.3.1 DC Power Supply Settings
      2. 5.3.2 Digital Multi-Meter Settings
      3. 5.3.3 Two-Channel Function Generator Settings
      4. 5.3.4 Oscilloscope Setting
      5. 5.3.5 Jumper (Shunt) Settings
      6. 5.3.6 Bench Setup Diagram
  7. 6 Power-Up and Power-Down Procedure
    1. 6.1 Power Up
    2. 6.2 Power Down
  8. 7 Test Waveforms (CL=0pF) With Different DT Configurations
    1. 7.1 DT Connected to VCCI (J-DT Option B in Table 1-1 )
    2. 7.2 DT Pin Floating or Left Open (J-DT Option A in Table 1-1 )
    3. 7.3 DT Pin Connected to RDT (J-DT Option C in Table 1-1 )
  9. 8 Schematic
  10. 9 Layout Diagrams
  11. 10List of Materials
  12. 11Revision History

2 Description

The UCC2x5xx evaluation board has three independent screw terminal blocks for VCCI, VDDA, and VDDB. The 3-position headers with jumpers for all the key input signals, such as PWM INPUTs (INA, INB or PWM), dead time (DT) programming and enable/disable function (EN/DIS), allow designers to easily evaluate different protection functions. A variety of testing points also support most of the key feature probing of the UCC2x5xx. Moreover, the PCB layout is not only optimized with minimized loop area in each gate driver loop and power supply loop with bypassing capacitors, but the layout also supports high voltage test between the primary side and secondary side with 120-mil PCB board cutout. Importantly, the creepage distance between two output channels are maximized with bootstrap diode in footprint of TO252-2(DPAK), which facilitates high-voltage, half-bridge testing for a wide variety of power converter topologies. For detail device information, refer to UCC21520DW, UCC20520DW, UCC21521CDW and UCC21530DWK data sheets and TI's Isolated gate driver solutions.