SLUUBM0D May   2017  – October 2020 TPS92518 , TPS92518-Q1 , TPS92518HV , TPS92518HV-Q1

 

  1.   Trademarks
  2. 1Description
    1. 1.1 Typical Applications
    2. 1.2 Connector Description
  3. 2Performance Specifications
  4. 3Performance Data and Typical Characteristic Curves
    1. 3.1 Startup Waveforms
      1. 3.1.1 Startup After SPI Enable Command
      2. 3.1.2 Startup on Hardware Enable Pin Transition
    2. 3.2 Shutdown Waveforms
      1. 3.2.1 Shutdown After SPI Disable
      2. 3.2.2 Shutdown After Hardware Enable Pin Transition
    3. 3.3 Current Sharing
    4. 3.4 Diode and Boot Capacitor Current
      1. 3.4.1 Diode, Inductor, and Boot Capacitor Current at Low Output Current
      2. 3.4.2 Diode, Inductor, and Boot Capacitor Current at High Output Current
      3. 3.4.3 Shunt FET Dimming
      4. 3.4.4 Undervoltage Lockout Description
  5. 4Schematic, PCB Layout, and Bill of Materials
    1. 4.1 Schematic
    2. 4.2 Layout
    3. 4.3 Bill of Materials
  6. 5Software
    1. 5.1 TPS92518 Demonstration Kit Software Installation
      1. 5.1.1 Windows 10
  7. 6Use of LEDSPIMCUEVM-879 Microcontroller Board for SPI Communications with the TPS92518
  8. 7Revision History

3.4.4 Undervoltage Lockout Description

The TPS92518 can be set up with undervoltage lockout protection with the ability to change the turn-on threshold and hysteresis, by populating a resistive divider that is unpopulated on the evaluation board. This involves loading R1 and changing the value of R2, and possibly populating C28. For details refer to the TPS92518 data sheet (SLUSCR7).
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