SLUUD51 April   2025

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
      1. 1.1.1 Before You Begin
    2. 1.2 Kit Contents
    3. 1.3 Electrical Performance Specifications
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Test Equipment
      1. 2.1.1 Voltage Source
      2. 2.1.2 Oscilloscope
      3. 2.1.3 Multimeters
      4. 2.1.4 Output Load
      5. 2.1.5 Fan
      6. 2.1.6 USB-to-GPIO Interface Adapter
      7. 2.1.7 Recommended Wire Gauge
    2. 2.2 List of Test Points, Jumpers, and Connectors
    3. 2.3 Efficiency Measurement Test Points
    4. 2.4 Control Loop Gain and Phase Measurement
    5. 2.5 External 5V Bias to Enhance Efficiency
    6. 2.6 Input Current Measurement
  9. 3Software
    1. 3.1 Opening the PMBus Fusion GUI
    2. 3.2 Monitor Page
    3. 3.3 Status Page
  10. 4Implementation Results
    1. 4.1 Performance Data and Typical Characteristics Curves
  11. 5Hardware Design Files
    1. 5.1 Schematic
    2. 5.2 PCB Layout
    3. 5.3 Bill of Materials
  12. 6Additional Information
    1. 6.1 Trademarks

2.2 List of Test Points, Jumpers, and Connectors

Table 2-1 lists the test point functions.

Table 2-1 Test Point Functions
Test PointNameDescription
TP1PVIN_EFFPositive side of input voltage sensing point to measure efficiency
TP2VOUTMonitor output ripple
TP3SWMonitor switching node frequency
TP4PGND_EFFPGND of input voltage sensing point to measure efficiency
TP5VOUT_EFFPositive side of output voltage sensing point to measure efficiency
TP6VCCMonitor the voltage on VCC pin
TP7SWMonitor switching node frequency
TP8VOUT/BODE_CHBMeasurement point of the receiving end from the frequency response analyzer
TP9VDRVMonitor the voltage on VDRV pin
TP10VOUT_REGMonitor the output voltage
TP11VCCEXTMonitor the voltage on EXTBIAS
TP12PMB_ALERTMonitor PMBus ALERT signal
TP13PGMonitor the power good signal
TP14BODE_CHAInject signal from the frequency response analyzer
TP15ENMonitor EN pin signal
TP16PGND_REGOutput voltage PGND sense point
TP17AGNDAnalog ground test point
TP18PGND_EFFPGND of output voltage sensing point to measure efficiency
TP19GOSNSRemote sense reference for PGND
TP20ADDRMonitor PMBus address voltage
TP21VCCIOMonitor external 1V pullup voltage for SVID
TP22AGNDMonitor external 1V pull up AGND for SVID
TP23PMB_CLKMonitor PMBus CLK signal
TP24PMB_DATMonitor PMBus DAT signal

Table 2-2 lists the EVM jumper functions

Table 2-2 Jumper Functions
JumperNameDescription
J5PG_PULLUPShunt short to pull up PG to VCC
J6EN_SRCShunt short pin3 and pin4 to EN from PVIN
J16IIN OptionShunt short to connect I_IN_P/I_IN_M to PVIN
All others JumperNo shunt short

Table 2-3 lists the EVM connector functions.

Table 2-3 Connector Functions
ConnectorNameDescription
J1PVINVIN screw terminal to connect input voltage
J2IINScrew terminal to connect to input connector J1 for the input current measurement
J3VOUTVOUT screw terminal to connect load to output
J4EXTBIASOverride internal LDO with external 5V bias for improving efficiency
J5PG PULLUPPGOOD pullup. 2-pin header to pull up PGOOD to VCC
J6EN_SRC2-pin header for enable. Add shunt to connect EN to PVIN and enable device. Remove shunt to disable device.
J7Mini-SlammerConnector block to interface with Mini Slammer
J8ADDRPin header block to select default PMBus address
J9SV_CLK2-pin header for SVID CLK line
J10PGNDPower ground test point.
J11Mini-SlammerConnector block to interface with Mini Slammer
J12USB2GPIOPMBus interface connector to connect the USB to GPIO interface adapter to the EVM
J13SV_ALERT2-pin header for SVID ALERT line
J14VORST PULLUPVORST pullup. 2-pin header to pull up VORST to VCC
J15SV_DIO2-pin header for SVID bi-directional data line
J16IIN Option2-pin header for input current measurement option