Texas Instruments TPS2375EVM, Руководство пользователя, Страница: 14 / 26

Setup
3-2
3.1 Setup
The HPA028 EVM is designed to allow evaluation of the TPS2375 device. Test
points and jumpers are provided to facilitate testing and configuration. At the
factory, JP0, JP5, JP6 (between pin 2 and pin 3), and JP7 will be installed.
3.2 Jumpers
JP0, JP1, JP2, JP3, JP4 Selects the Classification Resistor
JP5 Used to pass power from the input
JP6 Selects ground connection when applying an external power supply on J4 or
J5
JP7 Used to connect a 4.7 k
Ω
resistor as the load of the PD, that may be used to
maintain the power signature for the PD
3.3 Test Points
Test Points Description
TP1 Test point for TPS2375 ILIM pin
TP2 Test point for TPS2375 CLASS pin
TP3 Test point for TPS2375 DET pin
TP4 Test point for TPS2375 VSS pin
TP5 Test point for TPS2375 RTN pin
TP6 Test point for TPS2375 PG pin
TP7 Test point for TPS2375 N/C pin (or the UVLO pin if the DUT is TPS2376)
TP8 Test point for TPS2375 VDD pin
TP9 Test point for the 48 volts after the diode-bridges (BRG1 and BRG2)
TP10 Test point for the 48-V return on the Power Sourcing Equipment side
TP11, TP12 Test point for probing the signal-pair 48-V inputs coming from the RJ-45 connector
or for connecting an external 48-V power supply.
TP13, TP14 Test point for probing the spare pair 48-V inputs coming from the RJ-45 connector
or for connecting an external 48V power supply
TP15, TP16, TP17 Test points (only TP17 installed) for probing the 48-V supply to the load (DC/DC
Converter), or for connecting additional load resistors or capacitors
TP18, TP19, TP20 Test points (only TP20 installed) for probing the 48-V RTN or for connecting addi-
tional load resistors or capacitors