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TPL7407L Datasheet(PDF) 8 Page - Texas Instruments |
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TPL7407L Datasheet(HTML) 8 Page - Texas Instruments |
8 / 23 page 8 TPL7407L SLRS066D – JANUARY 2014 – REVISED MARCH 2016 www.ti.com Product Folder Links: TPL7407L Submit Documentation Feedback 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 |
Número de pieza similar - TPL7407L_16 |
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Descripción similar - TPL7407L_16 |
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