SLUUCJ2C july   2021  – august 2023

 

  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

5.4 Start-up Waveforms

GUID-20221122-SS0I-BBFP-WRDG-BHRDC4RVJLBG-low.png
(top: VDD-VEE, 10 V/div, bot: VEE-COM, 5 V/div),
mid-1: COM-VEE, 2 V/div, time = 1 ms/div
mid-2: VDD-COM, 10 V/div,
Figure 5-5 Start-up 1: VIN=24 V, IVDD-VEE = 0 mA
GUID-20221122-SS0I-GJNS-RDK4-PWBMCGWCMQMN-low.png
(top: VDD-VEE, 10 V/div, bot: VEE-COM, 5 V/div),
mid-1: COM-VEE, 5 V/div, time = 1 ms/div
mid-2: VDD-COM, 10 V/div,
Figure 5-6 Start-up 2: VIN=24 V, IVDD-VEE = 80 mA
GUID-20221122-SS0I-HLJ2-PFCT-CSLQ1MVPWNCX-low.png
top: VDD-VEE, 10 V/div, mid-1: COM-VEE, 2 V/div, mid-2: VDD-COM, 10 V/div,
mid-3: VEE-COM, 5 V/div, mid-4: EN, 5 V/div, bot: /PG, 5 V/div),
time = 1 ms/div
Figure 5-7 Start-up 3: VIN=24 V, IVDD-VEE = 80 mA
GUID-20221122-SS0I-KP3X-9F17-8HR2WC8THRLB-low.png
top: VDD-VEE, 10 V/div, bot: COM-VEE, 2 V/div), time = 1 ms/div
Figure 5-8 Start-up 4: VIN=24 V, IISO = 80 mA