SNVU628 February   2020 LM5155 , LM5155-Q1 , LM51551 , LM51551-Q1

 

  1.   LM5155EVM-SEPIC User's Guide
    1.     Trademarks
    2. 1 Features and Electrical Performance
      1. 1.1 Electrical Parameters
      2. 1.2 EVM Power Derating Curve
      3. 1.3 Terminals and Signal Test Points
    3. 2 Application Schematic
    4. 3 EVM Picture
    5. 4 Test Setup and Procedure
      1. 4.1 Bench Setup
      2. 4.2 Test Equipment
      3. 4.3 Precautions
    6. 5 Test Data
      1. 5.1 Efficiency
      2. 5.2 Output Regulation
      3. 5.3 Typical Power Up
      4. 5.4 Output Ripple Voltage
      5. 5.5 Coupled Inductor Currents
      6. 5.6 Dynamic DIR Change
      7. 5.7 Step Load Response
      8. 5.8 Bode Plots
      9. 5.9 Overloading Hiccup Mode
    7. 6 Design Files
      1. 6.1 Schematics
      2. 6.2 Bill of Materials
      3. 6.3 Board Layout

1.3 Terminals and Signal Test Points

Table 2 summarizes the EVM terminals and signal test points.

Table 2. EVM Terminals and Signal Test Points

Terminal SIGNAL PINS FUNCTION DESCRIPTION
J1 VIN+ Input Connector
J2 VOUT+ Output Connector
J3 GND Input Return Connector
J4 GND Output Return Connector
J5 VCC Pin 1 IC VCC Pin Signal
COMP Pin 2 IC COMP Pin Signal
SS Pin 3 IC SS Pin Signal
PGOOD Pin 4 IC PGOOD Pin Signal.
UVLO Pin 5 IC UVLO Pin Signal and External Enable Control
BIAS-IC Pin 6 IC BIAS Pin Signal
J6 PGND PGND Signal
J7 PGND PGND Signal
TP1 VIN+ Input Voltage Sense Point
TP2 VOUT Output Voltage Sense Point
TP3 GND Input Return Sense Point
TP4 GND Output Return Sense Point