SLUUBJ1B february   2017  – july 2023 TPS2373

 

  1.   1
  2.   TPS2373-4EVM-758 Evaluation Module
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Features
    2. 1.2 Applications
  5. 2Electrical Specifications
  6. 3Description
  7. 4Schematic
  8. 5General Configuration and Description
    1. 5.1 Physical Access
  9. 6TPS237xEVM-758 Performance Data
    1. 6.1 Startup
    2. 6.2 Transient Response
    3. 6.3 Efficiency
  10. 7EVM Assembly Drawings and Layout Guidelines
    1. 7.1 PCB Drawings
    2. 7.2 Layout Guidelines
    3. 7.3 EMI Containment
  11. 8Bill of Materials
  12. 9Revision History

5.1 Physical Access

Table 5-1 lists the EVM connector functionality and Table 5-2 describes the test point availability. Table 5-3 describes the jumper selections of the EVM.

Table 5-1 Connector Functionality
ConnectorLabelDescription
J1ETHERNET POWERPoE input. Connect to PSE power and data source.
J2DATAEthernet data passthrough. Connect to downstream Ethernet device.
J13OutputOutput connector to load.
J3DC/DC InputDC/DC converter input bypassing the PoE front-end. Connect a DC power supply 40-57.
Table 5-2 Test Points
Test PointLabelDescription
TP1PAIR 12Data pair from Pins 1 and 2 of J1
TP2PAIR 36Data pair from Pins 3 and 6 of J1
TP3PAIR 45Data pair from Pins 4 and 5 of J1
TP4PAIR 78Data pair from Pins 7 and 8 of J1
TP5EARTHConnect to earth ground when available
TP7MPS_DUTYMPS_DUTY pin of the TPS2373-4
TP9, TP10VDDInput voltage of PD system
TP11TPHTPH output of the TPS2373-4
TP12TPLTPL output of the TPS2373-4
TP13BTBT output of the TPS2373-4
TP14PGPower Good output of the TPS2373-4
TP15, TP25RTNLoad side return voltage
TP16AMPS_CTLAMPS_CTL output voltage
TP17VSS1EMI filter return side voltage
TP18REFReference pin output voltage of the TPS2373-4
TP19VSSPD side return voltage
TP20VOUTConverter output voltage
TP21VDSDrain voltage of the primary FET of the converter
TP22GATEGate voltage of the primary FET of the converter
TP23GNDSecondary ground connection
TP24VCINBias winding circuit output voltage
TP26FBFeedback pin voltage of U2 PWM controller
TP27VINStartup input voltage of U2 (open circuited)
TP28LOOPFeedback connection for frequency response measurements
TP29UVLO_SELSelect UVLO of U1 (open circuited)
TP30VCOUTOutput voltage of advanced startup of U1
Table 5-3 Jumper Descriptions
JumperDescription
J4Jump to power TPH/TPL/BT through the bias winding. Or open to power through external circuit
J5Automatic MPS duty cycle selection
J6Jump for adapter priority
J7CLSA selection
J10CLSB selection
J11Can be used to measure port current; otherwise, J11 must be shorted
J12Jump to add auto MPS current
J15Jump to power output LED