SLUUCJ2C july   2021  – august 2023 UCC14240-Q1 , UCC14241-Q1 , UCC15240-Q1 , UCC15241-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 U1 Component Selection
    2. 1.2 Pin Configuration and Functions
  5. 2Description
    1. 2.1 EVM Electrical Performance Specifications
  6. 3Schematic
  7. 4EVM Setup and Operation
    1. 4.1 Recommended Test Equipment
    2. 4.2 External Connections for Easy Evaluation
    3. 4.3 Powering the EVM
      1. 4.3.1 Power on for Start-up
      2. 4.3.2 Power off for Shutdown
    4. 4.4 EVM Test Points
    5. 4.5 Probing the EVM
  8. 5 Performance Data
    1. 5.1  Efficiency Data
    2. 5.2  Regulation Data
    3. 5.3  Steady State Input Current
    4. 5.4  Start-up Waveforms
    5. 5.5  Inrush Current
    6. 5.6  AC Ripple Voltage
    7. 5.7  EN-to-/PG Timing
    8. 5.8  RLIM
    9. 5.9  Fault Protection
      1. 5.9.1 Output UVLO
      2. 5.9.2 Output OVP
    10. 5.10 Shutdown
    11. 5.11 Thermal Performance
  9. 6Assembly and Printed Circuit Board (PCB) Layers
  10. 7Bill of Materials (BOM)
  11. 8Revision History

1.1 U1 Component Selection

The UCC14240-Q1 is the default IC used in the UCC14240EVM-052 but any of the alternate versions listed in Table 1-1 can be used for evaluation. Each of the component versions listed in Table 1-1 are pin-to-pin compatible, functionally equivalent, drop in replacements with respect to one another.

Table 1-1 UCC1424x-Q1, UCC1524x-Q1 Version Differences
General Part Number Orderable Part Number Isolation/Surge/Working Voltage Maximum Output Power at TA = 105°C Soft-start Fault Deglitch Soft-start Timeout
UCC14240-Q1 UCC14240QDWNQ1 3 kVRMS/6.5 kVPK/850 VRMS 1.5 W 64 µs 16 ms
UCC14241-Q1 UCC14241QDWNQ1 5 kVRMS/10 kVPK/1 kVRMS 1.5 W 3 ms 34.8 ms
UCC15240-Q1 UCC15240QDWNQ1 3 kVRMS/6.5 kVPK/850 VRMS 2.0 W 3 ms 34.8 ms
UCC15241-Q1 UCC15241QDWNQ1 5 kVRMS/10 kVPK/1 kVRMS 2.0 W 3 ms 34.8 ms

If U1 replacement is required, then TI recommends to always use best practice soldering techniques. Techniques can include taking appropriate ESD precautions and having qualified personnel, skilled at surface mount soldering and board level rework, removing and installing U1. Visually verify the desired UCC1424x-Q1 component version is properly installed in the EVM. If rework on U1 has previously been performed, then visually verify correct orientation of U1 according to Figure 2-1. The pin 1 identifying dot on top of the IC package is oriented at the top left according to Figure 2-1.