SLUUCW6 November   2023 LM74930-Q1

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 Test Points and Connectors
    2. 2.2 Test Equipment and Setup
      1. 2.2.1 Power Supplies
      2. 2.2.2 Meters
      3. 2.2.3 Oscilloscope
      4. 2.2.4 Loads
    3. 2.3 Test Setup and Procedures
      1. 2.3.1 Power-up and Power-down with Input Voltage
      2. 2.3.2 Unsuppressed Load Dump 200 V - Output Clamp
      3. 2.3.3 Overcurrent Protection Test
      4. 2.3.4 Output Hot-Short Test
  8. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 PCB Layouts
    3. 3.3 Bill of Materials (BOM)
  9. 4Additional Information
    1.     Trademarks

2.1 Test Points and Connectors

Table 3-1 lists the LM74930Q1EVM evaluation board input and output connector functionality. Table 3-2 and Table 3-3 describe the test point availability and the jumper functionality.

Table 2-1 Input and Output Connector Functionality
ConnectorLabelDescription
J1VINPower input connector to the positive rail of the input power supply.
J3PGNDGround connection for the power supply.
J2VOUTPower output connector to the positive side of the load.
J9VOUT_LCPower output connector after the output CLC Filter.
J4PGNDGround connection for the load.
Table 2-2 Test Points Description
Test PointsLabelDescription
TP1VINInput power supply to the EVM.
TP2VOUTOutput from the EVM.
TP3, TP4, TP14PGNDEVM ground.
TP5ENEnable input.
TP6VSInput power supply to the IC.
TP7DGATEDiode controller gate drive output.
TP8HGATEGATE driver output for the HSFET.
TP9FLT/Active low open drain fault output.
TP10

MODE

MODE input to disable reverse current blocking function of DGATE.

TP11TMRFault timer input.
TP12IMONAnalog current monitor output.
TP13CCathode of the ideal diode.

TP15

VREG

Onboard regulated voltage supply

Table 2-3 Jumper and LED Descriptions
JumperConnectionDescription
J51-2EN connected to VREG. EN pulled High.
2-3EN connected to GND. EN pulled Low.
J61-2MODE connected to VREG.
2-3MODE connected to GND. RCB disabled.
J71-2Output high D5 LED indication.
J81-2OVCLAMP connected to OV for overvoltage clamp with timer functionality.
2-3

OVCLAMP connected to GND when OV clamp not needed.

J101-2TIMER duration set to 0.14ms.
3-4TIMER duration set to 0.68ms,
5-6Controller set in latch-off mode,
J111-2Overcurrent protection disabled.
3-4Overcurrent protection threshold set to 4A.
5-6Overcurrent protection threshold set to 6A.
J121-2IMON voltage set to 0.65V/A.
3-4IMON voltage set to 0.43V/A.

J13

1-2

Pulls FLT/ pin to external supply

2-3

Pulls FLT/ pin to onboard VREG supply.

J14

1-2

Pulls OV resistor divider to VIN

2-3

Pulls OV resistor divider to VOUT