SNVU895 January   2025

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
    5. 1.5 General TI High Voltage Evaluation User Safety Guidelines
  8. 2Hardware
    1. 2.1 Quick Start Procedure
    2. 2.2 Detailed Description
      1. 2.2.1 Compatibility With the LM5017
    3. 2.3 EVM Characteristics
  9. 3Implementation Results
    1. 3.1 Performance Curves
  10. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials
  11. 5Additional Information
    1. 5.1 Trademarks

2.2 Detailed Description

This section describes the connectors and the test points on the EVM and how to properly connect, set up, and use the LM5169PEVM. See Figure 2-3 for location of connectors and jumpers.

    VOUTOutput voltage of the converterVOUT screw terminal connector. Apply load to this connector (+ and –). The VOUT test point is used to monitor output voltage.
    GNDGround of the converterGND and GNDS test points. Used as ground test points for the EVM.
    VINInput voltage to the converterVIN screw terminal connector. Apply input voltage to this connector (+ and –). The VIN test point is used to monitor input voltage.
    VINEMIInput voltage to input filter of the converterIf there is desire to use the built-in EMI filter on the EVM, then connect the input supply to the VINEMI screw terminal connector (+ and –).
    Input FilterEMI mitigationAn input EMI filter is provided on the EVM. Note L2 is not populated and must be installed for the EMI filter to operate. Also, note that the maximum input voltage to the filter is 100VDC.
    EN/UVLO JumperSet EN, UVLO pin optionsUse this jumper to enable, disable the EVM. The resistors connected to this pin set the input UVLO thresholds. Input UVLO thresholds are set to approximately 6V and 5.6V. These levels can be changed by changing the values of R5 and R7. For external control of the device, these resistors must be removed and the control signal applied to the center pin of the header. Note that for accurate shutdown current measurement, these resistors must also be removed and the EN input (center pin) grounded.
    1. Jumper open (default setup): Device starts up and shuts down with UVLO.
    2. Center pin connected to ON: Device starts up and shuts down without UVLO.
    3. Center pin connected to OFF: Device is off.
    PGOODThe PGOOD header used as a test point to monitor the power-good indicator. This flag indicates whether the output voltage has reached the regulation level. PGOOD is an open-drain output that is tied to VOUT through a 100kΩ, resistor R10.
LM5169PEVM LM5169PEVM Test Setup Figure 2-3 LM5169PEVM Test Setup