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TPL7407L Datasheet(PDF) 8 Page - Texas Instruments

No. de pieza TPL7407L
Descripción Electrónicos  TPL7407L 40-V 7-Channel Low Side Driver
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Fabricante Electrónico  TI1 [Texas Instruments]
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TPL7407L Datasheet(HTML) 8 Page - Texas Instruments

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TPL7407L
SLRS066D – JANUARY 2014 – REVISED MARCH 2016
www.ti.com
Product Folder Links: TPL7407L
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Copyright © 2014–2016, Texas Instruments Incorporated
8 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
TPL7407L will typically be used to drive a high voltage and/or current peripheral from an MCU or logic device
that cannot tolerate these conditions. The following design is a common application of TPL7407L, driving
inductive loads. This includes motors, solenoids & relays. Each load type can be modeled by what's seen in
Figure 9.
8.2 Typical Application
8.2.1 Inductive Load Driver
Please note that inductive loads, such as stepper motors or relays, can generate negative transients on the
OUTx pins of the device. Typically this occurs when the output channel FET turns ON, pulling the OUTx node to
ground. This can cause the OUTx node to go below the voltage rating listed in the Absolute Maximum Ratings
table, which in effect causes excessive ground current leakage. This effect is only seen on the OUT7 pin, and
prolonged usage in this condition can cause permanent damage to the device.
If the application has an inductive load connected to OUT7, it is recommended to use an external Schottky diode
to protect the OUT7 pin from negative transients larger than those listed in the Absolute Maximum Ratings table,
such as in Figure 9 below.
Figure 9. Inductive Load Driver Schematic


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