Datasheet

4 Connector and Test Point Description
4.1 JP1 –ENLDO1
4.2 JP2 – ENLDO2
4.3 JP3 – PG
4.4 JP4 –VPU
4.5 JP5 – MODE
4.6 JP6 – ENDCDC
4.7 J1 – VODC/GND
4.8 J2 – VIN / GND
www.ti.com Connector and Test Point Description
Placing a shorting bar between ENLDO1 and ON ties the EN pin of LDO1 to VIN, thereby enabling LDO1.
Placing a shorting bar between ENLDO1 and OFF ties the EN pin of LDO1 to GND, thereby disabling
LDO1
Placing a shorting bar between ENLDO2 and ON ties the EN pin of LDO2 to VIN, thereby enabling LDO2.
Placing a shorting bar between ENLDO2 and OFF ties the EN pin of LDO2 to GND, thereby disabling
LDO2
JP3 is pulled to GND if the output voltages of the DCDC converter and both LDOs are > 90% of their set
point and all enable pins are pulled high.
JP3 pulled up to the selected pull-up voltage level if any of the output voltages VODC, VLDO1 or VLDO2
is < 90% of its set point or all enable pins are pulled low
JP4 select the pull-up voltage used for the PG output.
Placing a shorting bar between VPU and VIN select VIN as pull-up voltage. Any other pull-up voltage can
be used by removing the shorting bar and connecting a power supply between VPU and GND.
JP3 selects the forced PWM or Power Save Mode (PSM) operation for the DCDC converter. Placing a
shorting bar between MODE and PWM ties the MODE pin of TPS65000 to VIN, thereby selecting forced
PWM operating mode for the DCDC converter. Placing a shorting bar between MODE and PFM ties the
MODE pin of TPS65000 to GND, thereby selecting Power Save Mode operating mode for the DCDC
converter at light-load conditions. If Power Save Mode is selected the DCDC converter will automatically
switch to PWM mode at heavier load conditions.
Placing a shorting bar between ENDCDC and ON ties the EN pin of the DCDC converter to VIN, thereby
enabling the DCDC converter. Placing a shorting bar between ENDCDC and OFF ties the EN pin of the
DCDC converter to GND, thereby disabling the DCDC converter.
This header is the output of the step-down converter. This output voltage is externally adjustable for the
TPS65000. The default setting on the EVM is 1.2V. VODC is capable of sourcing up to 600-mA. A load
can be connected between J1 pins 1 and 2 (positive connection) and J1 pins 3 and 4 (GND).
The input power supply has to be connected to this header. The power supply must be connected
between J2 pins 1 and 2 (positive connection) and J2 pins 3 and 4 (GND). The leads to the input supply
should be twisted and kept as short as possible. The input voltage has to be between 3.3-V and 6-V.
SLVU293 – August 2009 Using the TPS65000EVM 2.25 MHz Step-Down Converter with Dual LDO 5
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