SLVUCH5 july   2023 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, VOUT1 = 5.0 V, VOUT2 = 3.3 V, IOUT1 = 6 A, IOUT2 = 6 A and fSW = 2.1 MHz.

Table 2-1 Electrical Performance Specifications
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT CHARACTERISTICS
Input supply voltage range VIN range 6(3) 36 V
VIN_EMI range 12 36 V
Input current Input current at VIN 12 A
Input current at VIN_EMI 8 A
OUTPUT CHARACTERISTICS(1)
CH1 output voltage Default output is 5.0 V 4.9 5.0 5.1 V
CH1 output current 0 6 A
CH2 output voltage Default output is 3.3 V 3.234 3.3 3.366 V
CH2 output current 0 6 A
SYSTEM CHARACTERISTICS
Default switching frequency, fSW 2.1 MHz
Full-load efficiency(2) CH1, VIN = 12 V, IOUT1 = 6 A 91%
CH1, VIN = 24 V, IOUT1 = 6 A 87%
CH2, VIN = 12 V, IOUT2 = 6 A 88%
CH2, VIN = 24 V, IOUT2 = 6 A 84%
(1) Default output voltages and switching frequency are 5 V (CH1), 3.3 V (CH2) and 2.1MHz, 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.