SNVU914 July   2024 LM65645-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

3.2 Performance Data and Results

Unless otherwise specified the following condition apply: TA = 25ºC, VIN = 24V, 400kHz.

LM65645EVM Efficiency

VOUT = 5V 400kHz, Auto Mode

Figure 3-1 Efficiency
LM65645EVM Typical Switching Waveform in PWM
IOUT = 4.5A VIN = 24V VOUT = 5V
Figure 3-3 Typical Switching Waveform in PWM
LM65645EVM Load Transient (FPWM)
IOUT = 0A to 4.5A (1μs) VIN = 24V FPWM Mode VOUT = 5V
Figure 3-5 Load Transient (FPWM)
LM65645EVM Line and Load Regulation

VOUT = 5V 400kHz, Auto Mode

Figure 3-2 Line and Load Regulation
LM65645EVM Typical Switching Waveform in PFM
IOUT = 40mA VIN = 24V VOUT = 5V
Figure 3-4 Typical Switching Waveform in PFM
LM65645EVM Load Transient (AUTO)
IOUT = 0A to 4.5A (1μs) VIN = 24V Auto Mode VOUT = 5V
Figure 3-6 Load Transient (AUTO)
LM65645EVM Start-Up
IOUT = 40mA VIN = 24V Auto Mode VOUT = 5V
Figure 3-7 Start-Up
LM65645EVM Short Circuit
IOUT = 1A VIN = 24V VOUT = 5V
Figure 3-9 Short Circuit
LM65645EVM Start-Up
IOUT = 4.5A VIN = 24V Auto Mode VOUT = 5V
Figure 3-8 Start-Up
LM65645EVM Thermal Image
IOUT = 4.5A 400kHz VIN = 24V VOUT = 5V
LM65645EVM
Figure 3-10 Thermal Image