SLVUCL2 july   2023 LMQ64480-Q1 , LMQ644A0-Q1 , LMQ644A2-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1EVM Description
    1. 1.1 Features and Electrical Performance
  5. 2EVM Performance and Specifications
  6. 3EVM Photo
  7. 4Test Setup and Procedure
    1. 4.1 EVM Connections
    2. 4.2 Test Equipment
    3. 4.3 EVM Setup
      1. 4.3.1 Input Connections
      2. 4.3.2 Output Connections
  8. 5Test Data and Performance Curves
    1. 5.1 Efficiency and Load Regulation Performance
    2. 5.2 Waveforms and Plots
    3. 5.3 EMI Performance
    4. 5.4 Thermal Performance
  9. 6EVM Documentation
    1. 6.1 Schematic
    2. 6.2 Bill of Materials
    3. 6.3 PCB Layout
  10. 7Device and Documentation Support
    1. 7.1 Device Support
      1. 7.1.1 Development Support
        1. 7.1.1.1 Custom Design With WEBENCH® Tools
    2. 7.2 Documentation Support
      1. 7.2.1 Related Documentation

2 EVM Performance and Specifications

Unless otherwise indicated, VIN = 12 V, VOUT = 3.3 V, IOUT = 12 A and fSW = 2.1 MHz.

Table 2-1 Electrical Performance Specifications
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
INPUT CHARACTERISTICS
Input supply voltage rangeVIN range6(3)36V
VIN_EMI range 1236V
Input currentInput current at VIN12A
Input current at VIN_EMI 8A
OUTPUT CHARACTERISTICS(1)
Output voltageDefault output is 3.3 V3.2343.33.366V
Output current012A
SYSTEM CHARACTERISTICS
Default switching frequency, fSW2.1MHz
Full-load efficiency(2)VIN = 12 V, IOUT = 12 A87%
VIN = 24 V, IOUT = 12 A83%
(1) Default output voltages and switching frequency are 3.3 V and 2.1 MHz, respectively.
(2) The recommended airflow is 200 LFM when operating
(3) The EVM operates when the input voltage is in the range of 3 V to 6 V, but enters a dropout mode if there is insufficient input voltage to regulate output voltages.