General Configurations
describes the jumper functionality.
Table 4. Jumper and LEDs Descriptions
Jumper
Label
Description
J3
0.5 A
−
1.0 A
CH1 current setting (no jumper sets 1.5 A)
J7
0.5 A
−
1.0 A
CH2 current setting (no jumper sets 1.5 A)
D3 (Red)
D2
CH1 circuit fault indicator. LED turns on when the internal MOSFET is disabled due to a fault
condition such as overload, short circuit, or undervoltage and so forth.
D7 (Red)
D3
CH2 circuit fault indicator. LED turns on when the internal MOSFET is disabled due to a fault
condition such as overload, short circuit, or undervoltage and so forth.
CH1 and CH2 power good indicator.
This LED turns on from:
D4 (Green)
D4
VOUT1, if the jumper is installed in position 2-3
VOUT2, if the jumper is installed in position 1-2
4.2
Test Equipment and Setup
4.2.1
Power Supplies
One adjustable power supply: 0- to 20-V output, 0- to 3-A output current limit.
4.2.2
Meters
One DMM minimum needed and may require more, if simultaneous measurements are needed.
4.2.3
Oscilloscope
A DPO2024 or Lecroy 424 oscilloscope or equivalent, three 10X voltage probes, and a DC current probe
4.2.4
Loads
One resistive load or equivalent which can tolerate up to 3 ADC load at 12 V and are capable of the
output short.
6
TPS25921X-637EVM: Evaluation Module for TPS25921X
SLUUB50 – August 2014
Copyright © 2014, Texas Instruments Incorporated
