SNVU918 October   2024 LM68645-Q1

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  6. 2Hardware
    1. 2.1 Additional Images
    2. 2.2 Power Requirements
    3. 2.3 Setup and Operation
  7. 3Implementation Results
    1. 3.1 Evaluation Setup
    2. 3.2 Performance Data and Results
  8. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  9. 5Additional Information
    1. 5.1 Trademarks

1.3 Specification

Performance characteristics for the LM68645EVM are found in Table 1-1

Unless otherwise stated: VIN = 24V, VOUT = 5V, TA = 25ºC.

Table 1-1 LM68645EVM Electrical Performance Characteristics
ParameterTest ConditionsMINTYPMAXUNITS
INPUT CHARACTERISTICS
Input voltage range, VVINEVM input voltage operating range62463V
Input current, no load, IIN(NL)IOUT = 0AAUTO mode5.5μA
Input current, disabled, IIN(OFF)VEN/UVLO = 0V, no EN dividerVIN = 24V1.0µA
OUTPUT CHARACTERISTICS
Output voltage, VO IOUT = 0A, AUTO mode5.022V
IOUT = 4.5A5.001V
Output voltage regulation, ΔVOUTLoad regulation, AUTO modeIOUT = 0A to 4.5A20mV
Output voltage regulation, ΔVOUTLoad regulation, FPWM modeIOUT = 0A to 4.5A1
Output voltage regulation, ΔVOUTLine regulation, VIN = 12V to 48VIOUT = 4.5A1
Maximum output current VIN = 24V5.6A
SYSTEM CHARACTERISTICS
Switching frequency IOUT = 4.5A 400kHz
Peak efficiencyIOUT = 1.5AVIN = 24V95%
Full load efficiencyIOUT = 4.5AVIN = 24V90%