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Texas Instruments LM74800EVM-CS Controller Evaluation Module

Texas Instruments LM74800EVM-CS Controller Evaluation Module (EVM) helps designers evaluate the operation and performance of the LM74800-Q1, an ideal diode controller with switched output. The LM7480x-Q1 drives and controls external back-to-back N-Channel MOSFETs to emulate an ideal diode rectifier, with power path ON/OFF control and overvoltage protection. The Texas Instruments LM74800EVM-CS demonstrates how the LM74800-Q1, along with two back-to-back N-Channel MOSFETs configured in common-source topology, can provide 200V unsuppressed load dump protection with reverse battery protection to the downstream circuit. The first gate drive HGATE controls an external N-channel MOSFET to turn off or clamp output voltage to an acceptable safe level. The second gate drive DGATE controls another external N-Channel MOSFET to emulate an ideal diode.

Features

  • 12V and 24V automotive reverse battery protection
  • Input operating range 3V to 65V
  • 12V battery protection 3V to 40V
  • 24V battery protection 3V to 65V
  • 2A Nominal, 2.5A peak load current
  • Supports 200V unsuppressed load dump protection
  • Enable ON/OFF control
  • Programmable overvoltage cutoff and output clamp operation
  • Output voltage slew rate control
  • LED Indication for Output ON/OFF detection
  • Onboard TVS protection for automotive transient immunity

Required Equipment

  • Power Supplies
    • One adjustable power supply 0V to 600V output, 0A to 10A output current limit
    • Automotive Test Equipment which can generate ISO 7637-2 and ISO 16750-2 including 200V unsuppressed load dump Pulse 5A
  • Meters
    • One Digital Multi Meter minimum needed
  • Oscilloscope
    • A DPO2024 or equivalent, three 10x voltage probes, and a DC current probe capable of measuring 10A
  • Loads
    • One resistive load or equivalent which can tolerate up to 10A DC load at 12V

Applications

  • Automotive reverse battery protection
  • ADAS domain controller
  • Camera ECU
  • Head unit
  • USB HUBs
  • Power path protection, Power Mux, and ORing

Test Setup

Mechanical Drawing - Texas Instruments LM74800EVM-CS Controller Evaluation Module

Related Products

Texas Instruments LM7480x-Q1 Ideal Diode Controller

Drives and controls external back to back N-Channel MOSFETs to emulate an ideal diode rectifier.

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Texas Instruments LM74800EVM-CD Evaluation Module (EVM)

Evaluates the operation and performance of the LM7480-Q1 in reverse battery protection applications.

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Published: 2021-04-13 | Updated: 2022-03-11