Connector and Test Point Descriptions | Texas Instruments TPS62065

Connector and Test Point Descriptions

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4 Connector and Test Point Descriptions

4.1Enable Jumpers/Switches: TPS62065EVM

4.1.1J10 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.

4.1.2J11 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.

4.1.3J12 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.

4.1.4J13 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.

4.1.5J14 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.

4.1.6J15 GND

J15 is the return connection of the converter. A load can be connected between J15 and J13 (VOUT). The converter is capable of carrying a load current up to 2000 mA.

4.1.7JP10 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-MΩ pull-up resistor is connected between VIN and EN. Removing jumper JP10 turns on the converter.

4.1.8JP11 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-MΩ 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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