www.ti.com
2.1
Input / Output Connector Descriptions
2.1.1
J1 –VIN
2.1.2
J2 – GND
2.1.3
J3 –VOUT
2.1.4
J4 – GND
2.1.5
J5 –PG
2.1.6
JP1 – MODE/SYNC
2.1.7
JP2 – EN
2.1.8
JP3 – OVT
Setup
This is the positive input connection to the DC/DC converter. The leads to the input supply should be
twisted and kept as short as possible to minimize EMI transmission.
This is the input return connection for the input power supply.
This is the positive connection from the output of the DC/DC converter. Connect this pin to the positive
input of the load.
The default factory output voltage is set at 1.8V. By adjusting the feedback resistors, the output voltage
can be adjusted between 0.6V -- 3.8V. Refer to the data sheet (SLVS651) for further details.
This is the return connection from the output of the DC/DC converter. Connect this pin to the negative
input of the load.
This header is tied to the Power Good (PG) pin of the IC and is used to indicate when the output voltage
reaches a certain threshold. The PG pin is an open-drain output and must be tied to an external voltage
(< 4V) through a resistor for proper operation. This pin should be left floating if unused. For the EVM, PG
is tied to VOUT through a resistor.
This jumper toggles the operating mode of the IC between PFM/PWM mode and Forced PWM mode.
Connect the shorting jumper to GND for PFM/PWM operation; connect the shorting jumper to VIN for
Forced PWM operation. Also, by removing the jumper the MODE/SYNC pin can also be connected to an
external clock if it is desired to sync this EVM to a specific frequency. See the data sheet (SLVS651) for
further details. This pin should never be left floating.
This jumper enables or disables the linear regulator. Connect the shorting jumper from the center EN pin
to VIN to turn the converter ON; connect EN to GND to turn the converter OFF. This pin should never be
left floating.
This jumper provides access to the Over Voltage Tracking (OVT) functionality of this IC. By modifying
resistors R3 and R4 appropriately, this feature can be demonstrated by removing the shorting jumper and
connecting an external voltage source directly to OVT. See the data sheet (SLVS651) for additional details
on how to do this. The default setting for the EVM does not demonstrate this feature and appropriately ties
OVT to VIN through the shorting jumper in normal operation. This pin should never be left floating.
TPS62510EVM-168
2
SLVU161 – May 2006