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  • TPA3251: TPA3251 PFFB Question

    Resolved
    Part Number: TPA3251 Tool/software: Hi, I'd like to design a PCB for TPA3251 based on TPA3251 EVM board and apply PFFB. However I have some questions about the PFFB application; - In both SLAA788a and SLAA702 application notes, the opamp input stages…
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  • TPA3251: Current draw - gate drives

    Resolved
    Part Number: TPA3251 Tool/software: HI, The datasheet says that I_Vdd is 40 mA and the gate drive current is 25 mA per full-bridge at 50% duty cycle, therefore 90 mA total for the device. From a power budget standpoint, do I have to account for…
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  • TPA3251: Overvoltage protection for main audio input pins?

    Resolved
    Part Number: TPA3251 Other Parts Discussed in Thread: PGA2320 , TLV1871 , OPA1656 Tool/software: The datasheet for TPA3251 lists an absolute max for INPUT_X to GND of 7V. I am working to integrate TPA3251 in a solution that will accept line level audio…
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  • TPA3251: TPA3251 schematic

    TI Thinks Resolved
    Part Number: TPA3251 Hi ti team， Please help check TPA3251 schematic, Thanks! tpa3251低音炮原理图.pdf
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  • TPA3251: TPA3251: TPA3251 has a noise during powering up and down

    Resolved
    Part Number: TPA3251 There is a pop noise during powering up and down, the waveform as below: Yellow: Speaker Green: AMP_NRST Output SE configuration. Noise happens at all output channels. Increase C-start capacitor with 0.82uF in parallel…
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  • TPA3251: Inconsistency between datasheet and EVM - use of 3.3 ohm resistor

    TI Thinks Resolved
    Part Number: TPA3251 Tool/software: HI, In the datasheet application section (Fig. 25). there is a 3.3 ohm resistor in series with the GVdd pin but in the EVM schematics, the resistor is on the Vdd pin instead. Which is correct? Thanks!

  • TPA3251: TPA3251

    TI Thinks Resolved
    Part Number: TPA3251 TPA3251D2 cannot reduce output noise in SE 2.1 mode. Please listen to the audio file recorded in the attachment. PIN15 C_ We made a lot of adjustments to START, but it was useless. Is there any way to reduce the noise of this…
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  • TPA3251: MLCC capacitors for DC blocking

    Resolved
    Part Number: TPA3251 Tool/software: Hi, The EVM uses 10uf, XR7 capacitors for DC blocking in the signal path on the input side. A few questions come to mind: Are these detrimental to signal fidelity? Can one do better? Why are they in a 1206 package…
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  • TPA3251: Sync'ing devices - when is it necessary?

    Resolved
    Part Number: TPA3251 Tool/software: Hi, In an application where I have only two TPA3251 devices for a total of four BTL channels, is it necessary to sync the oscillators? These will run off the same power supply but will have lower power demands (midrange…
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  • TPA3251: TPA3251 on 2 Ohm load

    Resolved
    Part Number: TPA3251 Other Parts Discussed in Thread: TPA3221 Hello, in an audio amplifier we would like to use the TPA3251 in BTL configuration in order to have 2x120W on two 2 Ohm loads. We read on the datasheet that with the specific resistor value…
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