Texas Instruments TPS7A74EVM-068, Руководство пользователя

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1 Introduction
The Texas Instruments TPS7A74EVM-068 evaluation module (EVM) helps designers evaluate the operation and
performance of the TPS7A74 LDO voltage regulator. As shown in
Table 1-1 , the TPS7A74EVM-068 contains
one TPS7A74 LDO voltage regulator in the DSD package. An optional load transient circuit is also included to
assist the user with high-speed load transient testing. To simplify current measurements, an input current loop is
included.
Table 1-1. Device Information
EVM ORDERABLE NUMBER V
OUT
PART NAME PACKAGE
TPS7A74EVM-068 Adjustable TPS7A7401DSDR 8-pin DSD
2 Setup
This section describes the jumpers and connectors on the EVM, and how to properly connect, set up, and use
the TPS7A74EVM-068.
Section 2.1 and Section 2.3 describe the test setup and operation for the TPS7A74
LDO. Section 2.2 and Section 2.4 describe the test setup and operation of the optional load transient circuit.
2.1 LDO Input/Output Connector Descriptions
2.1.1 VIN and GND
VIN and GND are the connection terminals for the input supply. The VIN terminal is the positive connection, and
the GND terminal is the negative (that is, ground) connection.
2.1.2 BIAS and GND
BIAS and GND are the connection terminals for the bias supply. The BIAS terminal is the positive connection,
and the GND terminal is the negative (that is, ground) connection.
2.1.3 VOUT and GND
VOUT and GND are the connection terminals for the output load. The VOUT terminal is the positive connection,
and the GND terminal is the negative (that is, ground) connection.
2.1.4 EN
EN is a 3-pin header used to enable or disable the TPS7A74.
The center pin of the 3-pin header is tied to the TPS7A74 EN input. When the 2-pin shunt is placed across the
top two pins of the header, VIN is shorted to EN and the TPS7A74 is enabled. When the 2-pin shunt is placed
across the bottom two pins of the header, GND is shorted to EN and the TPS7A74 is disabled.
When driving the EN terminal with an off-board supply or signal generator, the applied voltage must be kept
between 0 V and 5.5 V.
www.ti.com Introduction
SBVU076 – APRIL 2022
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