Datasheet

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1 Related Documentation From Texas Instruments
2 Introduction
3 Setup
3.1 Input/Output Connector Descriptions
3.2 Setup and Operation
Related Documentation From Texas Instruments
TPS712xx data sheet (SBVS049 ).
The Texas Instruments TPS712xxEVM helps designers evaluate the operation and performance of the
TPS712xx family of devices. These devices are tailored to applications that need both high PSRR and low
output noise.
This EVM is designed to operate with an input voltage up to +5.5V. The default output voltage of this EVM
is +2.8V (VOUT1) and +1.225V (VOUT2) for U1 and +1.8V (VOUT1) and +2.85V (VOUT2) for U2. If
desired, this EVM can easily be modified to supply higher or lower output voltages by adjusting the
appropriate feedback resistor dividers. Also, other fixed output voltage versions of the devices can be
easily evaluated using this EVM. Refer to the product data sheet (SBVS049 ) for the various fixed output
voltage options available in the TPS712xx device family, as well as for more information on adjusting the
output voltage.
This section describes the jumpers and connectors on the EVM as well as how to properly connect, set
up, and use the TPS712xxEVM-050.
J1, J8 – VIN — This is the positive connection to the input power supply. The leads to the input supply
should be as short as possible for best transient performance.
J2, J9 – GND — This is the return connection for the input power supply.
J3, J10 – VOUT1 — This is the first output supply from the dual LDO. Connect this pin to the positive
input of the load.
J5, J12 – VOUT2 — This is the second output supply from the dual LDO. Connect this pin to the positive
input of the load.
J4, J6, J11, J13 – GND — This is the negative connection from the output of the power supply. Connect
this pin to the negative input of the load.
J7, J14 – GND, RESET — This connection is not used on the TPS712xxEVM-050.
JP1, JP3 – EN1 — This jumper enables and disables VOUT1.
JP2, JP4 – EN2 — This jumper enables and disables VOUT2.
Connect an input supply between J1 and J2 or J8 and J9, depending on which device you intend to
evaluate. The voltage range on this supply should not exceed +5.5V. Loads should be connected between
J3 and J4, J5, and J6, or J11 and J10, J12, and J13, depending on the circuit being evaluated. Enable the
output by positioning JP1, JP2, JP3, and JP4 to connect the EN and ON pins. The TPS71202 (U1) device
is set to provide output voltages of +2.8V and +1.225V. The TPS71247 (U2) is also available for
evaluation, and provides output voltages of +1.8V and +2.85V.
TPS712xxEVM User's Guide2 SBVU010 – February 2005