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  • TPA3220: /CMUTE and /FAULT pins transition time during start-up

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    Part Number: TPA3220 Hi Experts, My customer has question as follows. Would you answer them? 1. Customer measured a transient time of /CMUTE-pin while device started up. The datasheet mentioned that it is about 20ms, but the measurement result is 4~5ms…
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  • RE: TPA3220: Simplest Way to Use the Internal LDO and Resolve the RESET Issue - Resistive Divider or External Regulator

    Resolved
    Hi Bradley, You can use a resistor divider for the 30V to 5V as long as you make sure that if there's any voltage sag in the PVDD line it doesn't drop the 5V to be below the operating voltage of the device (4.5V minimum). We actually have a resistor…
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  • RE: TPA3221: Frequency Plot

    Resolved
    Hi Mark, Here's the bandwidth results. I used the TPA3220 instead of the TPA3221 but that should be fine since they have the same bandwidth performances. Test Conditions: Output Power = 5W Load = 8ohms LC Filter = 5.6uH/ 0.1uF Gain = 18dB. TPA3220EVM…
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  • RE: class D amplifie Guitar

    Resolved
    Hi Anatoliy, TPA3255EVM, TPA3251EVM, TPA3245EVM, TPA3244EVM, TPA3221EVM and TPA3220EVM are all compatible with the SideGig-Guitar Evaluation Module board! The power supply would have to be one that you have however. Hope this clarifies things. Best Regards…
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  • RE: TPA3220: Using the internal 5V0 LDO

    Resolved
    Hello Nick, For the issue with the TPA3220EVM-Micro, there is a mistake in the Table 8 for the LDO Mode configuration, R14(the 5V to GVDD connector) says it should be populated. This is incorrect R14 should be removed and you will get the correct voltage…

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