Texas Instruments TPS6227xEVM-306, User Manual

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2 Setup
3 Operation
Setup
Table 1 describes the jumpers and connectors on the EVM, as well as how to properly connect, setup,
and use the TPS6227xEVM-306.
Table 1. TPS6227xEVM-306 Jumpers and Connections
Jumper Connection Description Connection Instructions
Leads to the input supply should be twisted and kept as short as
J1 – VIN Positive input supply voltage
possible to minimize EMI transmission.
Return connection for converter input power
J2 – GND
supply
J3 – VOUT Output positive connection Connect this pin to the positive input of the load.
J4 – GND Output return connection
Connect the shorting jumper between pin 1 and 2 (ENA and the
center pin) enables the converter.
(2)
JP1
(1)
– This jumper enables or disables the
Connecting the shorting jumper between pin 2 and 3 (the center pin
ENABLE converter.
and DIS) disables the converter. This jumper should never be left
floating.
Connecting the shorting jumper between pin 1 and 2 (VSEL and H)
sets the output voltage to 1.15V.
This jumper is a digital input to the Connecting the shorting jumper between pin 2 and 3 (VSEL and L)
JP2 – VSEL
TPS62270 to set the output voltage. sets the output voltage to 0.9V.
Pin 2 of JP2 can be driven by an external logic signal or function
generator if desired. This jumper should never be left floating.
(1)
The center pin for the JP1 jumper was not labeled when the EVM was constructed. The center pin is referenced in this
document as "
the center pin ."
(2)
See TPS6227XEVM-306 Schematic and Figure 8 for jumper and pin names.
Connect the positive input power supply to J1. Connect the input power return (ground) to J2. The
TPS6227XEVM-306 has an absolute maximum input voltage of 7.0 V. The recommended maximum
operating voltage is 6.0 V.
Connect the desired load between J3 and J4. The TPS6227XEVM-306 can supply up to 400 mA of output
current.
Configure Jumpers JP1 and JP2 according to TPS6227xEVM-306 Jumpers and Connections ( Table 1 )
and as required for your application.
TPS6227xEVM-306 2 SLVU234 – February 2008
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