Texas Instruments TPS62120 Evaluation Module TPS62120EVM-640 TPS62120EVM-640 데이터 시트
제품 코드
TPS62120EVM-640
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Connector and Test Point Descriptions
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Connector and Test Point Descriptions
3.1
Enable Jumpers/Switches (RefDes) TPS62120
3.1.1
J1 VIN
This header is the positive connection to the input power supply. The power supply must be connected
between J1 and J3 (GND). The leads to the input supply should be twisted and kept as short as possible.
The input voltage must be between 2.0 V and 15.0 V.
between J1 and J3 (GND). The leads to the input supply should be twisted and kept as short as possible.
The input voltage must be between 2.0 V and 15.0 V.
3.1.2
J2 S+/S–
J2 S+/S– are the sense connection for the input of the converter. Connect a voltmeter, sense connection
of a power supply, or oscilloscope to this header.
of a power supply, or oscilloscope to this header.
3.1.3
J3 GND
This header is the return connection to the input power supply. Connect the power supply between J3 and
J11 (VIN). The leads to the input supply should be twisted and kept as short as possible. The input
voltage must be between 2.0 V and 15.0 V.
J11 (VIN). The leads to the input supply should be twisted and kept as short as possible. The input
voltage must be between 2.0 V and 15.0 V.
3.1.4
J4 VOUT
This header is the positive output of the step-down converter. The output voltage of the TPS62120 is
adjustable, with the feedback resistors R1 and R2. On the EVM, the output voltage can be adjusted in the
range of 1.2 V to 5.5 V.
adjustable, with the feedback resistors R1 and R2. On the EVM, the output voltage can be adjusted in the
range of 1.2 V to 5.5 V.
Note: A feed-forward capacitor is required. Refer to the
(
) for detailed
information.
3.1.5
J5 S+/S–
J5 S+/S– are the sense connection for the output of the converter. Connect a voltmeter, sense connection
of an electronic load, or oscilloscope to this header.
of an electronic load, or oscilloscope to this header.
3.1.6
J6 GND
J6 is the return connection of the converter. A load can be connected between J4and J6 (VOUT). The
converter is able to support a load current of up to 75 mA.
converter is able to support a load current of up to 75 mA.
3.1.7
JP1 EN
This jumper enables/disables the TPS62120 on the EVM. The shorting jumper JP1 between the center pin
and ON turns on the unit. Shorting the jumper between the center pin and OFF turns the unit off.
and ON turns on the unit. Shorting the jumper between the center pin and OFF turns the unit off.
3.1.8
JP2 SGND
JP2 connects the output capacitor of the TPS62120 to the open drain output SGND. SGND is low when
the TPS62120 is in shutdown mode, thus discharging the output capacitor. If the TPS62120 is enabled,
the open drain output SGND is high impedance.
the TPS62120 is in shutdown mode, thus discharging the output capacitor. If the TPS62120 is enabled,
the open drain output SGND is high impedance.
3.1.9
J7 VOUT (SMA)
The J7 SMA connector is connected to the output voltage of the TPS62120. The noise spectrum of the
output voltage can be easily analyzed with a spectrum analyzer.
output voltage can be easily analyzed with a spectrum analyzer.
By default, J7 is not assembled on the EVM.
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SLVU411 – September 2010
TPS62120EVM
Copyright © 2010, Texas Instruments Incorporated