SLUUD39C May   2024  – August 2025 UCC33411-Q1 , UCC33421-Q1

 

  1.   1
  2.   Description
  3.   Features
    1.     Applications
  4.   5
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Device Information
      1. 1.3.1 U1 Component Selection
      2. 1.3.2 UCC33421-Q1 Pin Definition
    4. 1.4 Specification
  6. 2Hardware
    1. 2.1 EVM Setup and Operation
      1. 2.1.1 Recommended Test Equipment
      2. 2.1.2 External Connections for Easy Evaluation
      3. 2.1.3 Powering the EVM
        1. 2.1.3.1 Power on for Start-up
        2. 2.1.3.2 Power off for Shutdown
      4. 2.1.4 EVM Test Points
      5. 2.1.5 Oscilloscope Probes: Probing the EVM
  7. 3Implementation Results
    1. 3.1 Performance Data
      1. 3.1.1 Efficiency Data
      2. 3.1.2 Regulation Data
      3. 3.1.3 Startup Waveforms
      4. 3.1.4 Inrush Current
      5. 3.1.5 AC Ripple Voltage
      6. 3.1.6 Load Transient
      7. 3.1.7 VCC Short-Circuit
      8. 3.1.8 Thermal Performance
  8. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 Assembly and Printed Circuit Board (PCB)
    3. 4.3 Bill of Materials (BOM)
  9. 5Additional Information
    1. 5.1 Trademarks
  10. 6Revision History

1.4 Specification

Table 1-4 EVM Electrical Characteristics for UCC33421-Q1 VINP=5V, VCC=5V, TA=25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT CHARACTERISTICS
VINP Input voltage range PVCC=1.5W 4.5 5 5.5 V
IIN_FL Input current at full load VINP=4.5V-5.5V, VCC=5.0V, Iout=300 mA 489 508 529 mA
IIN_NL Input current at no load VINP =5.0V, VCC=5.0V, Iout=0 mA 7 15 mA
OUTPUT CHARACTERISTICS
VCC DC full load set-point VINP=4.5V-5.5V, VCC=5.0V, Iout=300 mA 4.85 5 5.15 V
Iout VCC load current range VINP=4.5V-5.5V 0 300 mA
VCC%LD Load regulation VINP=5.0V, VCC=5.0V, Iout =0-300mA 0.5 %
VCC(AC) pk-to-pk AC ripple 20MHz bandwidth, VINP=5.0V, VCC=5.0V, Iout=300mA, Ta=25ºC, COUT=22uF 50 75 mV
PMAX Recommended maximum output power VINP=5.0V, Iout=300mA, Ta=25ºC 1.5 W
SYSTEM CHARACTERISTICS
η Full load efficiency VINP=5.0V, VCC=5.0V, Iout=300mA, Ta=25ºC, COUT=22uF 59 %
fSW Switching frequency 64.5 MHz
Table 1-5 EVM Electrical Characteristics for UCC33411-Q1 VINP=5V, VCC=3.3V, TA=25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT CHARACTERISTICS
VINP Input voltage range PVCC=1W 4.5 5 5.5 V
IIN_FL Input current at full load VINP=4.5V-5.5V, VCC=3.3V, Iout=300 mA 375 395 412 mA
IIN_NL Input current at no load VINP =5.0V, VCC=3.3V, Iout=0 mA 7 15 mA
OUTPUT CHARACTERISTICS
VCC DC full load set-point VINP=4.5V-5.5V, VCC=3.3V, Iout=300 mA 3.2 3.3 3.4 V
Iout VCC load current range VINP=4.5V-5.5V 0 300 mA
VCC%LD Load regulation VINP=5.0V, VCC=3.3V, Iout =0-300mA 0.5 %
VCC(AC) pk-to-pk AC ripple 20MHz bandwidth, VINP=5.0V, VCC=3.3V, Iout=300mA, Ta=25ºC, COUT=22uF 50 75 mV
PMAX Recommended maximum output power VINP=5.0V, Iout=300mA, Ta=25ºC 1 W
SYSTEM CHARACTERISTICS
η Full load efficiency VINP=5.0V, VCC=3.3V, Iout=300mA, Ta=25ºC, COUT=22uF 52 %
fSW Switching frequency 64.5 MHz