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General Configurations
5
SLVUA44B – June 2014 – Revised July 2017
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TPS25940EVM-635: Evaluation Module for TPS25940X
Table 4. Jumper and LED Descriptions (continued)
Jumper
Label
Description
D3 (Green)
D3
CH1 Power good indicator. LED turns on when the voltage at TP2(VOUT1) is more
than 11 V
D6 (Red)
D6
CH2 circuit fault indicator. LED turns on when the internal MOSFET is disabled due to
a fault condition such as overload , short circuit, undervoltage, and so forth.
D7(Green)
D9
CH2 Power good indicator. LED turns on when the voltage at TP2(VOUT1) is more
than 11 V
Use
Table 5
to set the EVM in different configurations in order to achieve the desired functionality from the
TPS25940EVM-635.
Table 5. EVM Configuration Setting
Jumper Location
E-fuse with DevSleep
J4
1-2
Install jumper at this location for 5.3 A
current Limit for VIN1
2-3
Install jumper at this location for 3.6 A
current Limit for VIN1
OPEN
If no jumper is installed default current
limit is 2.1 A for VIN1
J9
1-2
Install jumper at this location for 5.3 A
current Limit for VIN2
2-3
Install jumper at this location for 3.6 A
current Limit for VIN2
OPEN
If no jumper is installed default current
limit is 2.1 A for VIN2
J5
1-2
OPEN
3-4
J1
1-2
Install Jumper to get PG1 from VOUT1
2-3
OPEN
J6
1-2
OPEN
2-3
J10
1-2
OPEN
2-3
4.2
Test Equipment
This section describes the power supply, meter, oscilloscope, and loads for testing this EVM.
4.2.1
Power Supplies
One adjustable power supply: 0-V to 20-V output, 0-A to 6-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 take up to 6 ADC load at 12 V and capable to do the output short.
