SNVU768 December   2021 LM63460-Q1 , LM64460-Q1

 

  1.   Trademarks
  2. 1High-Density EVM Description
    1. 1.1 Typical Applications
    2. 1.2 Features and Electrical Performance
  3. 2EVM Performance Specifications
  4. 3EVM Photo
  5. 4Test Setup and Procedure
    1. 4.1 EVM Connections
    2. 4.2 EVM Setup
    3. 4.3 Test Equipment
    4. 4.4 Recommended Test Setup
      1. 4.4.1 Input Connections
      2. 4.4.2 Output Connections
    5. 4.5 Test Procedure
      1. 4.5.1 Line/Load Regulation and Efficiency
  6. 5Test Data and Performance Curves
    1. 5.1 Conversion Efficiency
    2. 5.2 Output Voltage Regulation
    3. 5.3 Operating Waveforms
      1. 5.3.1 Start-Up and Enable ON/OFF
      2. 5.3.2 Line and Load Transients
      3. 5.3.3 Short Circuit and Recovery
    4. 5.4 Thermal Performance
    5. 5.5 EMI Results – CISPR 25 Class 5
      1. 5.5.1 Conducted EMI
      2. 5.5.2 Radiated EMI
  7. 6EVM Documentation
    1. 6.1 Schematics
      1. 6.1.1 LM63460EVM-2MHZ Schematic
      2. 6.1.2 LM64460EVM-2MHZ Schematic
    2. 6.2 Bill of Materials
      1. 6.2.1 Alternative BOM Configurations
    3. 6.3 PCB Layout
    4. 6.4 Assembly Drawings
  8. 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 Specifications

Unless otherwise indicated, VIN = 13.5 V, VOUT = 5 V, IOUT = 6 A and FSW = 2.1 MHz

Table 2-1 Electrical Performance Specifications
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT CHARACTERISTICS
Input voltage range, VIN Operating 5.5 36 V
Input voltage turn-on, VIN(on) Adjusted using EN divider resistors 4.5
Input voltage turn-off, VIN(off) 3.2
Input voltage hysteresis, VIN(hys) 1.3
Input current, disabled, IIN(off) VEN = 0 V (with 255-kΩ and 100-kΩ EN divider) 39 µA
OUTPUT CHARACTERISTICS
Output voltage, VOUT(1) Adjustable from 1 V to 95% VIN 4.95 5.0 5.05 V
Output current, IOUT VIN = 6 V to 36 V (2) 0 6 A
Output voltage regulation, ΔVOUT Load regulation IOUT = 0 A to 6 A 0.1%
Line regulation VIN = 6 V to 36 V 0.1%
Output voltage ripple, VOUT(AC) 25 mVrms
Output overcurrent protection, IOUT(OCP) 8.5 A
SYSTEM CHARACTERISTICS
Default switching frequency, FSW(nom) Adjustable from 200 kHz to 2.2 MHz (with suitable choice of buck inductance and input/ouptut capacitance at lower FSW) 2.1 MHz
Efficiency, η(1) VIN = 8 V IOUT = 3 A 95%
IOUT = 6 A 92%
VIN = 13.5 V IOUT = 3 A 94.5%
IOUT = 6 A 92.5%
VIN = 18 V IOUT = 3 A 93%
IOUT = 6 A 91.7%
VIN = 24 V IOUT = 3 A 91.4%
IOUT = 6 A 90.6%
Thermal impedance, RθJA 23 °C/W
Junction temperature, TJ –40 150 °C
(1) The default output voltage and switching frequency of this EVM are 5 V and 2.1 MHz, respectively. The BIAS pin connects to the output for output voltages of 3.3 V and above. Efficiency and other performance metrics can change based on operating input voltage, load current, switching frequency, external bias voltage, ambient temperature, externally connected output capacitance, and other parameters.
(2) The recommended airflow is 200 LFM when operating at output currents greater than 4 A.