SLUUCS6A february   2023  – august 2023 UCC14340-Q1 , UCC14341-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 of COM-VEE
    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

4.4 EVM Test Points

Table 4-1 describes the various EVM test points, allowing easy access for connecting oscilloscope probes, DVM test leads and wire connections to lab test equipment as outlined in Figure 4-1. Pay attention to maintain separation between the primary side, GNDP and secondary side, VEE. Primary-side test points are not to be referenced to VEE through improper test equipment insertion. Likewise, secondary-side test points are not to be referenced to GNDP through improper test equipment insertion.

Table 4-1 Input, Output, Test Point (I/O/TP) Description
PIN I/O/TP COLOR DESCRIPTION MIN TYP MAX UNIT
J1 I Green VBIAS, EN and /PG bias 3 VBIAS 5 V
J2:1-2 I Green EN, off 0 V
J2:2-3 I Black EN, on VBIAS V
J3:1-3 O Green Secondary, VDD-to-VEE 18 25 V
J3:2-3 O Green Secondary COM-to-VEE 0 5 V
J4 I Green VIN, primary input voltage 13.5 15 16.5 V
TP1 TP Black VEE, secondary side reference 0 V
TP2 TP Yellow /PG, power good test point VBIAS V
TP3 TP PCB COM-to-VEE, secondary COM scope probe point 0 5 V
TP4 TP White COM-to-VEE, secondary COM output midpoint 0 5 V
TP5 TP Yellow EN, enable test point VBIAS V
TP6 TP PCB VDD-to-VEE, secondary VDD scope probe point 18 25 V
TP7 TP Red VIN, positive probe point 13.5 15 16.5 V
TP8 TP Red VDD, secondary VDD test point 15 25 V
TP9 TP PCB VIN-to-GNDP scope probe point 13.5 15 16.5 V
TP10 TP Black GNDP, shared primary GND test point 0 V
TP11 TP Black GNDP, shared primary GND test point 0 V