SLUUCJ2 July   2021 UCC14240-Q1

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Pin Configuration and Functions
  3. 2Description
    1. 2.1 EVM Electrical Performance Specifications
  4. 3Schematic
  5. 4EVM Setup and Operation
    1. 4.1 Reference
    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 Oscilloscope Probes: Probing the EVM
  6. 5 Performance Data
    1. 5.1 Efficiency Data
    2. 5.2 Regulation Data
    3. 5.3 Start-up Waveforms
    4. 5.4 Inrush Current
    5. 5.5 AC Ripple Voltage
    6. 5.6 EN and /PG Timing
    7. 5.7 Shutdown
    8. 5.8 Steady State
    9. 5.9 Thermal Performance
  7. 6Assembly and Printed Circuit Board (PCB) Layers
  8. 7Bill of Materials (BOM)
  9. 8Revision History

Thermal Performance


GUID-20210719-CA0I-NZ4C-FPNQ-FNRPFN0R2T6W-low.png

VIN = 24 V VDD = 20.24 V IVDD = 100 mA
VVEE = 5 V IVEE = 10 mA POUT = 2.07 W
TRISE = 45.1°C (see Equation 1)
Figure 5-17 Steady State, 500 mW Above PMAX
Equation 1. T R I S E = 70.1 ° C - 25 ° C = 45.1 ° C

GUID-20210719-CA0I-RLGK-ZJHS-RS5HBNGJXXCC-low.png

VIN = 24 V VDD = 20.24 V IVDD = 80 mA
VVEE = 5 V IVEE = 10 mA POUT = 1.67 W
TRISE = 35.5°C (see Equation 2)
Figure 5-18 Rated Power
Equation 2. T R I S E = 60.5 ° C - 25 ° C = 35.5 ° C