Test Setup and Results
6
SLVUBD2A – September 2018 – Revised January 2019
Copyright © 2018–2019, Texas Instruments Incorporated
TPS212x Evaluation Module
3
Test Setup and Results
This chapter describes the proper setup for the TPS212x power MUX EVM. This section explains the
different configuration modes present on each EVM, and the required jumper positions to enable each
configuration.
3.1
TPS212x EVM Test Equipment
Read the TPS212x data sheet before using the EVM.
The following test equipment is recommended:
•
Storage oscilloscope
•
Current problem
•
Two adjustable power supples, 0 V–22 V at 4 A maximum
•
A passive or active load
3.2
Setting up the TPS2121 EVM
Make sure the TPS2121 evaluation board has the default jumper settings as
shows.
Table 8. Default Jumper Settings for TPS2121 Evaluation Board
Input
Connector
Label
Position
VIN1
J1
PR1 (3.3 V)
Install
J4
OV1 (3.3 V)
Install
VIN2
J12
OV2 (12 V)
Install
J13
CP2
Install
VOUT
J17, J18
100 µF
Install
J20
10
Ω
Install
J22
SS (10 nF)
Install
JP1
PR1
Jump pins 2 and 3
JP2
ST
Jump pins 2 and 3
JP3
ILIM (4.5 A maximum)
Jump pins 1 and 2
The default jumper configuration sets the Internal Voltage Reference (VREF) configuration. Since the
voltage on the priority pin is set for 3.3-V operation and CP2 is grounded, priority will be given to VIN1.
Therefore, VIN1 can be set to 3.3 V, and the device will prioritize VIN1 even if VIN2 is at a higher voltage.
See the data sheet for more information regarding the configuration settings.
3.3
Setting up the TPS2120 EVM
Make sure the TPS2120 evaluation board has default jumper settings as
shows.
Table 9. Default Jumper Settings for TPS2120 Evaluation Board
Input
Connector
Label
Position
J1
PR1 (3.3 V)
Install
J4
OV1 (3.3 V)
Install
J9
J9 (12 V)
Install
J12, J13
100 µF
Install
J15
10
Ω
Install
J18
SS (10 nF)
Install
JP1
SEL
Jump pins 1 and 2
JP2
PR1
Jump pins 2 and 3
JP3
ST
Jump pins 2 and 3
JP4
ILIM (4.5 A maximum)
Jump pins 2 and 3
