SLUUB60B May   2015  – August 2021 TPS544B25 , TPS544C25

 

  1.   Trademarks
  2. 1 Introduction
  3. 2 Description
    1. 2.1 Typical End-User Applications
    2. 2.2 EVM Features
  4. 3 EVM Electrical Performance Specifications
  5. 4 Schematic
  6. 5 Test Setup
    1. 5.1 Test and Configuration Software
      1. 5.1.1 Description
      2. 5.1.2 Features
    2. 5.2 Test Equipment
    3. 5.3 The PWR-681EVM
    4. 5.4 List of Test Points, Jumpers ans Switch
  7. 6 EVM Configuration Using the Fusion GUI
    1. 6.1 Configuration Procedure
  8. 7 Test Procedure
    1. 7.1 Line/Load Regulation Measurement Procedure
    2. 7.2 Efficiency
    3. 7.3 Bode Plot Measurement Procedure
    4. 7.4 Equipment Shutdown
  9. 8 Performance Data and Typical Characteristic Curves
    1. 8.1  Efficiency
    2. 8.2  Load Regulation
    3. 8.3  Line Regulation
    4. 8.4  Transient Response
    5. 8.5  Output Ripple
    6. 8.6  Control On
    7. 8.7  Control Off
    8. 8.8  Overcurrent Protection
    9. 8.9  Control Loop Bode Plot
    10. 8.10 Thermal Image
  10. 9 Fusion GUI
  11. 10EVM Assembly Drawing and PCB Layout
  12. 11List of Materials
  13. 12Revision History

6 EVM Configuration Using the Fusion GUI

The TPS544B25 or TPS544C25 installed on this EVM leave the factory pre-configured. See Table 6-1 for a short list of key factory configuration parameters as obtained from the configuration file.

Table 6-1 Key Factory Configuration Parameters
ADDRESS HEXADDRESS DECPART ID
0x2436TPS544x25
GENERAL
CMD CodeCMD CODE HEXENCODED HEXDECODEDCOMMENTS
VIN_OFF0x360xF0104.0 VTurn OFF voltage
VIN_ON0x350xF0124.5 VTurn ON voltage
IOUT_CAL_OFFSET0x390xE0000.0000 ACurrent offset for GUI readout
IOUT_OC_FAULT_LIMIT0x460xF848 (TPS544C25)36 AOC fault level
0xF830 (TPS544B25)24 A
IOUT_OC_FAULT_RESPONSE0x470xBFRestartResponse to OC fault
IOUT_OC_WARN_LIMIT0x4A0xF844 (TPS544C25)34 AOC warning level
0xF82C (TPS544B25)22 A
VOUT_COMMAND0x210x01E60.95 Voutput voltage
VOUT_MAX0x240x03001.5 Vmaximum output voltage
VOUT_TRANSITION_RATE0x270xD03C1 mV/usVout transition rate
VOUT_SCALE_LOOP0x290xF0041Output sense scaling ratio for main control loop
VOUT_OV_FAULT_LIMIT0x400x02901.281 VOutput overvoltage fault threshold
VOUT_OV_FAULT_RESPONSE0x410xBFRestartOutput overvoltage fault response
VOUT_OV_WARN_LIMIT0x420x02671.201 VOutput overvoltage warn threshold
VOUT_UV_WARN_LIMIT0x430x01430.631 VOutput undervoltage warn threshold
VOUT_UV_FAULT_LIMIT0x440x01300.594 VOutput undervoltage fault threshold
VOUT_UV_FAULT_RESPONSE0x450xBFRestartOutput undervoltage fault response
ON_OFF_CONFIG0x020x16CNTL only, Active HighControl signal and operation command not required
OPERATION0x010x00Operation is not used to enable regulation; Unit: immediate off
OT_FAULT_LIMIT0x4F0x007D125°COT fault level
OT_WARN_LIMIT0x510x0064100°COT warn level
TON_DELAY0x600x00000 msTurn-on delay
TON_RISE0x610x00055 msSoft-start time
TON_MAX_FAULT_LIMIT0x620x0064100 msUpper limit for Vout reaching regulation
TOFF_DELAY0x640x00000 msTurn-off delay
TOFF_FALL0x650x00001 msSoft-stop fall time
MFR_VOUT_MIN0xA40x01000.5 Vminimum output voltage

If it is desired to configure the EVM to settings other than the factory settings shown in Table 6-1, the TI Fusion Digital Power Designer software can be used for reconfiguration. It is necessary to have input voltage applied to the EVM prior to launching the software so that the TPS544B25 or TPS544C25 installed is active and able to respond to the GUI and the GUI can recognize the device. The default configuration for the EVM is to start converting at an input voltage of 4.5 V; therefore, to avoid any converter activity during configuration, an input voltage less than 4.5 V must be applied. An input voltage of 4 V is recommended.