SLUUCO2 August   2022 TPSM8D6B24

 

  1.   Abstract
  2.   Trademarks
  3. 1 Description
    1. 1.1 Before You Begin
    2. 1.2 Features
  4. 2 Electrical Performance Specifications
  5. 3 Schematic
  6. 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
      1. 4.2.1 Voltage Source
      2. 4.2.2 Oscilloscope
      3. 4.2.3 Multimeters
      4. 4.2.4 Output Load
      5. 4.2.5 Fan
      6. 4.2.6 USB-to-GPIO Interface Adapter
      7. 4.2.7 Recommended Wire Gauge
    3. 4.3 List of Test Points, Jumpers, and Connectors
    4. 4.4 Evaluating Split Rail Input
  7. 5 EVM Configuration Using the Fusion GUI
    1. 5.1 Configuration Procedure
  8. 6 Test Procedure
    1. 6.1 Line and Load Regulation and Efficiency Measurement Procedure
    2. 6.2 Efficiency Measurement Test Points
    3. 6.3 Control Loop Gain and Phase Measurement Procedure
  9. 7 Performance Data and Typical Characteristic Curves
    1. 7.1 Efficiency
    2. 7.2 Load Regulation
    3. 7.3 Line Regulation
    4. 7.4 Transient Response
    5. 7.5 Control Loop Bode Plot
    6. 7.6 Output Ripple
    7. 7.7 Control On
    8. 7.8 Control Off
    9. 7.9 Thermal Image
  10. 8 EVM Assembly Drawing and PCB Layout
  11. 9 Bill of Materials
  12. 10Using the Fusion GUI
    1. 10.1  Opening the Fusion GUI
    2. 10.2  General Settings
    3. 10.3  Changing ON_OFF_CONFIG
    4. 10.4  Pop-Up for Some Commands While Conversion is Enabled
    5. 10.5  SMBALERT# Mask
    6. 10.6  Device Info
    7. 10.7  Phase Commands
    8. 10.8  All Config
    9. 10.9  Pin Strapping
    10. 10.10 Monitor
    11. 10.11 Status

4.3 List of Test Points, Jumpers, and Connectors

Table 4-1 lists the test point functions.

Table 4-1 Test Point Functions
Test Point Name Description
TP1 PVIN PVIN test point
TP2, TP3, TP4, TP10, TP16, TP22, TP27 PGND PGND test point
TP5 Remote Sense Vout A (+) VOUT_A remote sense + voltage point
TP6 VOUT_A VOUT_A sensing test point
TP7 CHA_VoutA Channel A for VOUT_A small signal loop gain measurements (B/A setup)
TP8 CHB_VoutA Channel B for VOUT_A small signal loop gain measurements (B/A setup)
TP9 Remote Sense Vout A (–) VOUT_A remote sense – voltage point
TP11 PGood_A PGOOD signal of VOUT_A
TP12 VSHARE_A VSHARE_A measurement point. Sensitive signal
TP13 VSHARE_B VSHARE_B measurement point. Sensitive signal
TP14 PGood_B PGOOD signal of VOUT_B
TP15 SYNC External clock input (SYNC IN) or output to synchronize other devices (SYNC OUT)
TP17 Remote Sense Vout B (+) VOUT_B remote sense + voltage point
TP18 VOUT_B VOUT_B sensing test point
TP19 CHA_VoutB Channel A for VOUT_A small signal loop gain measurements (B/A setup)
TP20 CHB_VoutB Channel B for VOUT_A small signal loop gain measurements (B/A setup)
TP21 Remote Sense Vout B (–) VOUT_B remote sense – voltage point
TP23 CNTL CNTL signal on J2 header
TP24 CLK CLK signal on J2 header
TP25 SMBALRT SMBALERT signal on J2 header
TP26 DATA DATA signal on J2 header

Table 4-2 lists the EVM jumpers.

Table 4-2 Jumpers
JumperNameDescription
JP1AVIN_AAVIN_A input source selection
JP2AVIN_BAVIN_B input source selection
JP3EN_AEN_A pin selections
JP4EN_BEN_B pin selections
JP5VDD5_AExternal VDD5_A connection
JP6VDD5_BExternal VDD5_B connection
JP7USB to PVINShort to connect PVIN to micro USB connector
JP8PMBus to AVINShort to connect USB-to-GPIO 3.3 V to AVIN

Table 4-3 lists the options for the EN/UVLO pin selections on JP2 and JP4.

Table 4-3 JP3 and JP4 Selections
Shunt PositionSelection
CNTL_INPUTPMBus adapter control signal
UVLOResistor divider to PVIN
DISABLEEN/UVLO short to ground

Table 4-4 lists the options for the AVIN pin selections on JP1 and JP2.

Table 4-4 JP1 and J2 Selections
Shunt PositionSelection
AVINAVIN pin connected to AVIN input through 10-Ω resistor. Use this selection when testing with a split rail input.
PVINAVIN pin connected to PVIN through 10-Ω resistor

Table 4-5 lists the EVM connector functions.

Table 4-5 Connector Functions
ConnectorNameDescription
J1Micro-USB PowerMicro USB connector to power EVM from a 5-V USB source
J2PMBusPMBus socket for TI FUSION adapter
T1PVINVIN+ connector
T2, T3PGNDVIN– connector
T4AVINExternal AVIN connector
T5VOUT_AVOUT+ connector
T6, T8PGNDVOUT– connector