SLUUCU2A March   2023  – September 2023 UCC14130-Q1 , UCC14131-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. 5Performance 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 and Timing
    8. 5.8  RLIM
    9. 5.9  Shutdown
    10. 5.10 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 shown in Figure 4-1. Pay attention to maintain separation between the primary side, GNDP and secondary side, VEE (= GNDS). 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.

Note: Refer to Figure 4-1 to locate test point location on the board for TP1, TP2, etc.
Table 4-1 Input, Output, Test Point (I/O/TP) Description
PIN

Name

I/O/TPCOLORDESCRIPTIONMINTYPMAXUNIT
J15-VIGreenVBIAS, EN and /PG bias3VBIAS5V
J2:1-2ENIGreenEN, off0V
J2:2-3ENIBlackEN, onVBIASV
J3:1-3VDD, [+12V]OGreenSecondary, +12V Output, [+12V]-to-VEE, or VDD-VEE12V
J3:2-3[+5V]OGreenSecondary, +5V Output, [+5V]-to-VEE, or [+5V]-VEE5V
J4VINIGreenVIN, primary input voltage81218V
TP1GNDSTPBlackVEE and GNDS, secondary side reference0V
TP2/PGTPYellow/PG, power good test pointVBIASV
TP3+5VTPPCB[+5V]-VEE, secondary COM scope probe point05V
TP4+5VTPWhite[+5V]-VEE, secondary +5V output05V
TP5EN, ENATPYellowEN, enable test pointVBIASV
TP6VDD, [+12V]TPPCB[+12V]-to-VEE, or VDD-VEE, secondary VDD scope probe point12V
TP7VINTPRedVIN, positive probe point81218V
TP8VDD, [+12V]TPRed[+12V], secondary VDD test point12V
TP9VINTPPCBVIN-to-GNDP scope probe point81218V
TP10GNDPTPBlackGNDP, shared primary GND test point0V
TP11GNDPTPBlackGNDP, shared primary GND test point0V