SLUUAY7B May   2014  – August 2021 TPS544B20 , TPS544C20

 

  1. 1 Description
    1. 1.1 Typical Applications
    2. 1.2 Features
  2. 2 Electrical Performance Specifications
  3. 3 Schematic
  4. 4 Test Setup
    1. 4.1 Test and Configuration Software
      1. 4.1.1 Description
      2. 4.1.2 Features
    2. 4.2 Test Equipment
    3. 4.3 The PWR-634EVM
    4. 4.4 Test Set up and USB Interface Adapter
    5. 4.5 List of Test Points
  5. 5 EVM Configuration Using the Fusion GUI
    1. 5.1 Configuration Procedure
  6. 6 Test Procedure
    1. 6.1 Line/Load Regulation and Efficiency Measurement Procedure
    2. 6.2 Efficiency
    3. 6.3 Equipment Shutdown
  7. 7 Performance Data and Typical Characteristic Curves
    1. 7.1 Efficiency
    2. 7.2 Load Regulation
    3. 7.3 Transient Response
    4. 7.4 Output Ripple
  8. 8 Screen Shots
    1. 8.1 Fusion GUI Screen Shots
  9. 9 EVM Assembly Drawing and PCB Layout
  10. 10List of Materials
  11. 11Revision History

5 EVM Configuration Using the Fusion GUI

The TPS544B20 or TPS544C20 installed on this EVM leave the factory pre-configured. See Table 5-1 for a short list of key factory configuration parameters as obtained from the configuration file.

Table 5-1 Key Factory Configuration Parameters
ADDRESS HEXADDRESS DECPART ID
0x1B27TPS544x20
GENERAL
CMD ID WITH PHASECMD CODE HEXENCODED HEXDECODEDNUMERICCOMMENTS
VIN_OFF0x360xF0145.00 V5Turn OFF voltage
VIN_ON0x350xF01C7.00 V7Turn ON voltage
TPS544B20COMMENTS
IOUT_CAL_GAIN0x380x88211.0071 mΩ1.0071DCR of output inductor
IOUT_CAL_OFFSET0x390xE0000.0000 A0Current offset for GUI readout
IOUT_OC_FAULT_LIMIT0x460xF83C30.0 A30OC fault level
IOUT_OC_FAULT_RESPONSE0x470x3CRestart continuouslyResponse to OC fault
IOUT_OC_WARN_LIMIT0x4A0xF83225.0 A25OC warning level
MFR_04 (VREF_TRIM)0xD40x00000.000 V0Trim voltage
ON_OFF_CONFIG0x020x02Mode: always convertingControl signal and operation command not required
OPERATION0x010x00Unit: immediate off; margin: noneResponse to turn OFF trigger
OT_FAULT_LIMIT0x4F0x007D125°C125OT fault level
OT_WARN_LIMIT0x510x0064100°C100OT warn level
TON_RISE0x610xE02B2.6875 ms2.6875Soft-start time
TPS544C20COMMENTS
IOUT_CAL_GAIN0x380x88211.0071 mΩ1.0071DCR of output inductor
IOUT_CAL_OFFSET0x390xE0000.0000 A0Current offset for GUI readout
IOUT_OC_FAULT_LIMIT0x460xF83225.0 A25OC fault level
IOUT_OC_FAULT_RESPONSE0x470x3CRestart continuouslyResponse to OC fault
IOUT_OC_WARN_LIMIT0x4A0xF82820.0 A20OC warning level
MFR_04 (VREF_TRIM)0xD40x00000.000 V0Trim voltage
ON_OFF_CONFIG0x020x02Mode: always convertingControl signal and operation command not required
OPERATION0x010x00Unit: immediate off; margin: noneResponse to turn off trigger
OT_FAULT_LIMIT0x4F0x007D125°C125OT fault level
OT_WARN_LIMIT0x510x0064100°C100OT warn level
TON_RISE0x610xE02B2.6875 ms2.6875Soft-start time

If it is desired to configure the EVM to settings other than the factory settings shown in Table 5-1, 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 TPS544B20 or TPS544C20 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.