Texas Instruments Evaluation Module for TPS22929D TPS22929DEVM-661 TPS22929DEVM-661 Datenbogen
Produktcode
TPS22929DEVM-661
Setup
2
Setup
This section describes the jumpers and connectors on the EVM as well as how to properly connect, set
up, and use the TPS2292xxEVM-661.
up, and use the TPS2292xxEVM-661.
2.1
J1/J3
–
Input Connections
This is the connection for the leads from the input source. Connect the positive connection to the VIN J1
and the negative connection to the GND J3.
and the negative connection to the GND J3.
2.2
J4/J6
–
Output Connections
This is the connection for the output of the TPS2292xxEVM. Connect the positive connection of the load to
the VOUT J4 and the negative connection to the GND J6.
the VOUT J4 and the negative connection to the GND J6.
2.3
JP3
–
EN
This is the enable input for the device. A shorting jumper must be installed on JP3 in either the HI or LO
positions, and EN must not be left unconnected. An external enable source can be applied to the EVM by
removing the shunt and connecting a signal to the center pin of JP3. Refer to the Datasheet for proper ON
and OFF voltage level settings. A switching signal may also be used and connected at this point.
positions, and EN must not be left unconnected. An external enable source can be applied to the EVM by
removing the shunt and connecting a signal to the center pin of JP3. Refer to the Datasheet for proper ON
and OFF voltage level settings. A switching signal may also be used and connected at this point.
2.4
J2/J5
–
V
IN
Sense and V
OUT
Sense
These two connectors are used when very accurate measurements of input or output voltage are required,
Ron measurements should be made using these sense connections and measuring the voltage drop from
VIN to VOUT and then calculating the resistance.
Ron measurements should be made using these sense connections and measuring the voltage drop from
VIN to VOUT and then calculating the resistance.
3
Operation
Connect the positive input of the power supply to the VIN J1 and the negative lead of the power supply to
GND J3. The input voltage range of the TPS2292xx is 1.4 V to 5.5 V.
GND J3. The input voltage range of the TPS2292xx is 1.4 V to 5.5 V.
Output load can be applied by connecting between J4 VOUT and J6 GND. The TPS2292xx is rated for a
maximum continuous current of 2A. Additional output load can be selected using JP6, JP7, and JP8.
Shorting across JP6 selects R1 an 560 ohm on board resistor. JP8 selects R3 an 14 ohm on board
resistor. JP6 selects R1 which is open for customer selection. R1, 2 and 3 are intended for light loads of
the output, observe the 1/8W(R1) and 1/8W(R2
maximum continuous current of 2A. Additional output load can be selected using JP6, JP7, and JP8.
Shorting across JP6 selects R1 an 560 ohm on board resistor. JP8 selects R3 an 14 ohm on board
resistor. JP6 selects R1 which is open for customer selection. R1, 2 and 3 are intended for light loads of
the output, observe the 1/8W(R1) and 1/8W(R2
&
R3) power rating for these parts. Configure jumper JP3
as required. JP3 must be installed for proper operation. ON is normal operation. While operating in the ON
state the rise time of the device is internally controlled to avoid inrush current. In the OFF position, the
device is shut down. Devices equipped with the QDO option will connect a
state the rise time of the device is internally controlled to avoid inrush current. In the OFF position, the
device is shut down. Devices equipped with the QDO option will connect a
Ω
on-chip load resistor output
quick discharge. Quick Output Discharge (QOD) is noted in
.
4
Test Results
See the Typical Characteristics section of the TPS2292xx data sheet.
2
TPS2292xEVM-661
SLVU537
–
September 2011
Copyright
©
2011, Texas Instruments Incorporated