Texas Instruments TPS70933 Evaluation Module TPS70933EVM-110 TPS70933EVM-110 데이터 시트
제품 코드
TPS70933EVM-110
Introduction
1
Introduction
The TI TPS709xxEVM-110 Evaluation Module (EVM) helps design engineers evaluate the operation and
performance of the TPS709xx family of linear regulators for possible use in their own circuit application.
This EVM configuration contains a single linear regulator with internal thermal protection, reverse current
protection, and overcurrent protection in a SOT23-5 package. The regulator is capable of delivering up to
150 mA to the load, depending on the input-output power dissipation across the part which can be
minimized because of the low dropout voltage. The input and output capacitors for the TPS709xx must be
2.2 µF (effective minimum) for stability. An additional input capacitor connection is added to the EVM if
smaller, lower voltage capacitors are desired.
performance of the TPS709xx family of linear regulators for possible use in their own circuit application.
This EVM configuration contains a single linear regulator with internal thermal protection, reverse current
protection, and overcurrent protection in a SOT23-5 package. The regulator is capable of delivering up to
150 mA to the load, depending on the input-output power dissipation across the part which can be
minimized because of the low dropout voltage. The input and output capacitors for the TPS709xx must be
2.2 µF (effective minimum) for stability. An additional input capacitor connection is added to the EVM if
smaller, lower voltage capacitors are desired.
2
Setup
This section describes the jumpers and connectors on the EVM as well as how to properly connect, setup,
and use the TPS709xxEVM-110.
and use the TPS709xxEVM-110.
2.1
Input/Output Connectors and Jumper Descriptions
2.1.1
J1 – V
IN
J1 is the input power supply voltage connector. The positive input lead and ground return lead from the
input power supply should be twisted and kept as short as possible to minimize EMI transmission.
Additional bulk capacitance should be added between J1 and J2 if the supply leads are greater than six
inches. For example, an additional 47-µF electrolytic capacitor connected from J1 to ground eliminates
unwanted ringing on the input due to long wires.
input power supply should be twisted and kept as short as possible to minimize EMI transmission.
Additional bulk capacitance should be added between J1 and J2 if the supply leads are greater than six
inches. For example, an additional 47-µF electrolytic capacitor connected from J1 to ground eliminates
unwanted ringing on the input due to long wires.
2.1.2
J2 – GND
J2 is the return connector for the input power supply.
2.1.3
J3 – EN
This jumper enables or disables the output of the TPS709xx. Placing a shorting jumper between pins 1
and 2 (OFF position) disables the TPS709xx. There is a pull-up resistor connected internally in the device;
therefore, removing the jumper enables the TPS709xx. The maximum rating of EN is 7 V. If EN is
connected to V
and 2 (OFF position) disables the TPS709xx. There is a pull-up resistor connected internally in the device;
therefore, removing the jumper enables the TPS709xx. The maximum rating of EN is 7 V. If EN is
connected to V
IN
or an external voltage source, be sure EN does not exceed 7 V.
2.1.4
J4 – VOUT
J4 is the regulated output voltage connector.
2.1.5
J5 – GND
J5, the return connector for VOUT, is connected to J2 on the PCB.
2.2
Equipment Setup
•
Set the power supply voltage to the desired operating input voltage. Turn the power supply off.
Connect the positive voltage lead from the power supply to J1 (V
Connect the positive voltage lead from the power supply to J1 (V
IN
). Connect the ground lead from the
power supply to J2 (GND).
•
Connect a 0- to 150-mA load between J4 (VOUT) and J5 (GND).
3
Operation
•
Turn on the power supply.
•
Vary the respective load and input voltage as necessary, for test purposes.
2
TPS709xxEVM-110 Evaluation Module
SLVU689A – June 2011 – Revised September 2012
Copyright © 2011–2012, Texas Instruments Incorporated