Tpa3251 Evm Top Composite Assembly - Texas Instruments TPA3251 User Manual

Evaluation module

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Hardware Configuration

3.9

Reset Circuit

The TPA3251EVM includes RESET supervision so that the TPA3251 device remains in reset until all the

power rails are up and stable. The RESET supervisor also ensures that the device is put into reset if one

of the power rails experiences a brownout. This circuit combined with the RESET switch (S1) help ensure

that the TPA3251 can be placed in reset easily as needed or automatically if there is a power supply

issue.

3.10 Op Amp versus Direct Drive

The op amps are used to change a single-ended input into a differential input. By default, the gain of the

op amps are set for unity gain; however, this can be modified to increase or decrease the gain through the

op amps. One way to bypass the op amps for a more direct connection is using the AIB.

EVM Design Documents

This section contains the TPA3251EVM board layout, schematics, and bill of materials (BOM).

4.1

TPA3251EVM Board Layouts

Figure 25

and

Figure 26

TPA3251 Evaluation Module

illustrate the EVM board layouts.

Figure 25. TPA3251 EVM Top Composite Assembly

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SLAU751 – November 2017

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