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STD Datasheet(PDF) 2 Page - Texas Instruments

No. de pieza STD
Descripción Electrónicos  TPS7A1601EVM-046
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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Introduction
www.ti.com
1
Introduction
The Texas Instruments TPS7A1601EVM-046 evaluation module helps design engineers to evaluate the
operation and performance of the TPS7A16xx family of linear regulators for use in their own circuit
applications. This particular EVM configuration contains a single linear regulator with internal thermal and
current-limit shutdowns. The TPS7A1601 also has enable (disable), PG (Power Good), and
user-programmable PG circuitry in an extremely small DGN (MSOP-8) PowerPAD
™ package. The
regulator, including external components, is capable of delivering up to 100 mA to the load depending on
the input/output power dissipation across the part. The TPS7A16xx does not require an input capacitor,
and the output capacitor only needs to be
≥ 2.2 µF (effective minimum) for stability; however, for
conservative design practice accounting for widely varying noise environments and dynamic line/load
conditions, a 1-
µF input capacitor and a 0.01-µF feedforward capacitor have been used in the design.
2
Setup
This section describes the jumpers and connectors on the EVM as well as how to properly connect, set
up, and use the TPS7A1601EVM.
2.1
Input/Output Connectors and Jumper Descriptions
2.1.1
J1
– VIN
J1 is the input power supply voltage connector. Twist the positive input lead and ground return lead from
the input power supply, and keep them as short as possible to minimize EMI transmission. Add additional
bulk capacitance between J1 and J2 if the supply leads are greater than 6 inches. For example, an
additional 47-
µF electrolytic capacitor connected from J1 to ground can improve the transient response of
the TPS7A1601, while eliminating unwanted ringing on the input due to long-wire connections.
2.1.2
J2
– GND
J2 is the ground-return connector for the input power supply.
2.1.3
J3
– GND
J3 is the output ground-return connector
2.1.4
J4
– VOUT
J4 is the regulated output voltage connector.
2.1.5
JP1
– EN
SP1 is the output enable. To enable the output, connect a jumper to short the ON pin 1 to the EN center
pin 2. To disable the output, connect a jumper to short EN pin 2 to OFF pin 3.
2.1.6
J5
– PG
J5 is Power Good. If a jumper is installed across J5, the PG signal is pulled up to Vout and the signal can
be monitored via TP1 (test point 1). The user can also pull up the signals themselves by connecting
directly to pin 1 of J5. The maximum pullup voltage that can be used on the PG pin is 5.5 V.
2.1.7
J6
– Input Diode Bypass
The EVM is populated with a 100-V, 300-mA protection diode on the input. This diode can be bypassed by
connecting a jumper across J6.
2.2
Equipment Setup
Turn off the input power supply after verifying that its output voltage is set to greater than 6 V (60 V
maximum). Connect the positive voltage lead from input power supply to VIN at the J1 connector of the
EVM. Connect the ground lead from the input power supply to GND at the J2 connector of the EVM.
2
TPS7A1601EVM-046
SLVU549
– December 2011
Submit Documentation Feedback
Copyright
© 2011, Texas Instruments Incorporated


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