Datasheet

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Test Points

5 Test Points

Table 1. Test Points

TEST POINT NAME DESCRIPTION

TP1 RTN Input voltage power supply RTN

TP2 RTN Load side RTN

TP3 PG Power Good

TP4 FLT Fault

TP5 -48VIN Input voltage power supply

TP6 GATE Gate output

TP7 -48VOUT Output voltage

TP8 TIMER Fault timer capacitor

TP9 RAMP Current output ramp

TP10 EN Enable signal, high true (and under-voltage detection)

TP11 OV Over-voltage detection

TP12 SENSE Current sense input

TP13 -48V SCOPE Isolated scope return

TP14 -48V SCOPE Isolated scope return

TP15 -48V SCOPE Isolated scope return

TP16 -48V SCOPE Isolated scope return

6 Connectors

Table 2. Connectors

CONNECTOR DESCRIPTION

J1 -48 V RTN, main power input

J2 -48 V RTN

J3 -48 V output

J4 -48 V, main power input

7 Enable Switche S1

The enable slide switch turns on the hot plug controller to ramp the output voltage. When the switch is

toward DIS, the output is off.

8 Indicators

• Green LED indicator for Power Good (PG)

• Red LED indicator for FAULT (FLT)

SLUU456–October 2010 TPS2394 Hot Swap Controller System

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