Connector and Test Point Descriptions
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4
Connector and Test Point Descriptions
4.1
Enable Jumpers/Switches: TPS62065EVM
4.1.1
J10 VIN
This header is the positive connection to the input power supply. The power supply must be connected
between J10 and J12 (GND). The leads to the input supply should be twisted and kept as short as
possible. The input voltage must be between 3.0 V and 6.0 V.
4.1.2
J11 S+/S–
J11 S+/S– are the sense connections for the input of the converter. Connect a voltmeter, or the sense
connection of a power supply or oscilloscope, to this header.
4.1.3
J12 GND
This header is the return connection to the input power supply. Connect the power supply between J12
and J10 (VIN). The leads to the input supply should be twisted and kept as short as possible. The input
voltage must be between 3.0 V and 6.0 V.
4.1.4
J13 VOUT
This header is the positive output of the step-down converter. The output voltage of the TPS62065 is
adjustable with feedback resistors R10 and R11. On the EVM, the output voltage is set to 1.8 V by default.
NOTE:
A feed-forward capacitor is required. Refer to the
TPS6206x data sheet
(
SLVS833
) for
detailed information.
4.1.5
J14 S+/S–
J14 S+/S– are the sense connections for the output of the converter. Connect a voltmeter, or the sense
connection of an electronic load or oscilloscope, to this header.
4.1.6
J15 GND
J15 is the return connection of the converter. A load can be connected between J15 and J13 (V
OUT
). The
converter is capable of carrying a load current up to 2000 mA.
4.1.7
JP10 EN
This jumper enables/disables the TPS62065 on the EVM. Shorting jumper JP10 between the center pin
and On turns on the unit. Shorting the jumper between center pin and Off turns the unit off. A 1-M
Ω
pull-up resistor is connected between VIN and EN. Removing jumper JP10 turns on the converter.
4.1.8
JP11 MODE
This jumper enables/disables the power-saving mode under light loads. Shorting jumper JP11 between
the center pin and PWM disables the power-saving mode; If the power save mode is disabled, the
converter operates in forced PWM mode over the entire load current range. Shorting the jumper between
the center pin and PWM/PSM enables the power-saving mode. The device operates in power-saving
mode under light load conditions. See the
TPS6206x data sheet
(
SLVS833
) for a detailed description of
this configuration. A 1-M
Ω
pulldown resistor is connected between GND and MODE. By removing JP11,
the converter operates in power-saving mode under light load conditions.
4
TPS62065/67EVM
SLVU364 – March 2010
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