Datasheet

6.4 Switches
6.4.1 Enable Switch S1
6.5 Indicators
7 Equipment
7.1 Equipment Needed
7.1.1 6.1.1 Voltage Source
7.1.2 6.1.3 Oscilloscope
7.1.3 6.1.4 Current Probe
7.1.4 6.1.5 Recommended Wire Gague
7.2 6.2 Equipment Supplied
Equipment www.ti.com
The Enable slide switch turns on the hot plug controller to ramp the output voltage. When the switch is off,
the output is off.
• Green LED Indicator for Power Good (PG)
• Red LED Indicator for FAULT (FLT)
The input voltage source, VIN is a 20-V variable dc source at 10 A.
A digital oscilloscope can be used to monitor the test points. Table 2 lists the test points.
A current probe is helpful to observe turn on characteristics of the external load.
Power is limited to 5 W; 18 gage wire minimum is recommended.
The TPS242x Module configured with TPS2420/21 is supplied.
Table 5. EVM Configurations
EVALUATION MODULE COMPONENT
HPA270EVM-001 TPS2420
HPA270EVM-002 TPS2421-1
HPA270EVM-003 TPS2420-2
8 TPS2420 Hot Swap Controller System Test Board SLUU343 – January 2009
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