SNVU757 June   2021 LM5169-Q1

 

  1.   Trademarks
  2. 1General TI High Voltage Evaluation User Safety Guidelines
  3. 2EVM Characteristics
  4. 3LM5169FQEVM Evaluation Module
    1. 3.1 Quick Start Procedure
    2. 3.2 Detailed Descriptions
  5. 4Schematic
  6. 5PCB Layout
  7. 6Bill of Materials
  8. 7Performance Curves

3 LM5169FQEVM Evaluation Module

The LM5169FQEVM EVM is configured to deliver a regulated 10-V output, 0.3 A at 750-kHz switching frequency, and an additional 10-V, 0.3 A floating output. The LM5169 uses a COT control architecture, with input voltage feed-forward, to provide constant frequency regulator with tightly regulated output voltage. This type of control requires adequate voltage ripple at the FB input to achieve stable regulation. The LM5169FQEVM is set up with type III ripple injection to minimize the output voltage ripple, while ensuring a stable regulator. The LM5169FQEVM also provides the option to use type I or type II ripple injection. See the LM5169 data sheet for more information. An overall view of the LM5169FQEVM and the schematic are shown inFigure 3-1, and Figure 4-1 respectively.

Please note that for EVMs labeled as LM5168FQEVM, that the LM5168F is installed and approximately one half of the load current is available from this device. Both EVMs are identical, except for the converter IC installed.