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

2.3 Test Setup and Procedures

Make sure the evaluation board has default jumper settings as shown in Table 3-4.

Table 2-4 Default Jumper Setting for LM74930Q1EVM Evaluation Board
Jumper Default Setting Functionality
J5 1-2 EN connected to VREG. EN pulled High.
J6 1-2 MODE connected to VREG.

Reverse current blocking enabled.
J7 1-2 D5 LED indication when output High.
J8 2-3 OVCLAMP connected to GND.

OVCLAMP functionality disabled.
J10 1-2 TIMER set to 0.14 ms.
J11 3-4 Overcurrent protection threshold set to 4 A.
J12 1-2 IMON voltage set to 0.65 V/A.
J13 2-3 FLT/ pulled up to VREG.
J14 1-2 OV resistor ladder pulled to VIN.
GUID-20231023-SS0I-3SH9-CSV1-S8TMFVZFV30J-low.png Figure 2-1 LM74930Q1EVM Setup With Test Equipment

Use the following instructions before starting any test and repeat again before moving to next test.

  1. Set the power supply output VIN to 0 V.
  2. Turn ON the power supply and set the power supply output VIN to 12 V and current limit of 10 A.
  3. Turn OFF the power supply.
  4. Set the jumper setting on EVM to default position as shown in Table 3-4.