Datasheet

2 EVM Jumpers and Connectors
3 Operation
www.ti.com EVM Jumpers and Connectors
This section describes the jumpers and connectors on the EVM as well as how to properly connect, set
up, and use the TPS720xxEVM-307.
Table 2. TPS720xxEVM-307 Jumpers and Connectors
JUMPER DESCRIPTION DIRECTIONS
Connect the lead from the power terminal of the bias input source to this input. The
Input Bias Voltage
J1 - pin 1 supply must be between 2.5 V and 5.5 V. The supply must also be at least 1.4 V above
Connection
the output voltage.
Input Bias Ground
J1 - pin 2 Connect the lead from the return terminal of the bias source to this input.
Connection
Connect the lead from the power terminal of the input source to this input. The supply
J2 Input V
IN
Connection must be between 1.1 V and 4.5 V. The supply must be greater than 200 mV plus the
output voltage.
J3 Input Ground Connection Connect the lead from the return terminal of the input source to this input.
J4 Output V
OUT
Connection Connect the positive side of the load and/or output multimeter to this output.
Connect the lead from the return terminal of the load and/or output multimeter to this
J5 Output Ground Connection
output.
This jumper allows the user to use one supply to power the TPS720xxEVM-307. Place
a shunt across the pins of JP1 to connect the V
IN
and V
BIAS
inputs. The J1 or the J2
JP1 V
IN
and V
BIAS
Connection connector may be used to supply the circuit with the shunt installed. In this mode, the
supply must meet the requirements for both the V
IN
and V
BIAS
supplies. Remove the
shunt to use separate supplies for each input.
Enable input for the TPS720xxEVM-307. Place a shunt across the ON and EN pins of
JP2 to enable the TPS720xxEVM-307. Place a shunt across the OFF and EN pins of
JP2 EN
JP2 to disable the TPS720xxEVM-307. A shunt must be installed on JP2 in either ON
or OFF positions and EN should not be left unconnected.
Connect the positive input of the bias supply to the V
BIAS
pin on J1 (pin 1). Connect the positive input
power supply to the V
IN
pins on J2. Connect the input bias supply return (ground) to pin 2 of J1. Connect
the input power return (ground) for V
IN
to the GND pin on J3. The TPS720xxEVM-307 has a maximum
input voltage of 5V for V
IN
and 6V for V
BIAS
. The recommended maximum operating input voltage is 4.5 V
for V
IN
and 5.5V for V
BIAS
.
Connect the desired load between V
OUT
(J4) and GND (J5). The TPS720xx supplies up to 350 mA of
output current.
Configure jumpers JP1 and JP2 as described in the TPS720xxEVM-307 Jumpers and Connectors table.
SLVU266 – August 2008 TPS720xxEVM-307 3
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