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  • TPS7A78: Addition of bidirectional TVS clamp at AC+/- pins to reduce Rs value

    Resolved
    Part Number: TPS7A78 Hi Ti I understand that the resistor Rs is required to limit the surge current into the AC+/- pins when the device is first powered from the AC supply. The limiting current is 2.5A from the datasheet. Our application will run from…
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  • TPS7A78: Is it possible to draw a small current (4mA) from the CSCIN capacitor?

    Resolved
    Part Number: TPS7A78 Other Parts Discussed in Thread: CC1101 Hi Ti Thanks for your help with my two previous questions. I have another one I'm afraid. I'm looking in detail at the 3.3V output variant of the TPS7A78. From the datasheet I think the…
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    • Answered

  • TPS7A78: Rs/Cs selection

    Resolved
    Part Number: TPS7A78 Hi Could you please let me know your recommended Rs/Cs value for the following conditions? Also, how will we select those values? ACin = 80Vac ~ 276Vac Bridge : Half bridge Muk
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  • TPS7A78: Symbol and footprint of PTPS7A7833PWPT

    Resolved
    Part Number: TPS7A78 Hello, Would you happen to have please the symbol and footprint of the PTPS7A7833PWPT part in orcad format (sym, dra, pad, step, etc)? Thank you. Sana Rezgui
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  • TPS7A78: Input Range

    TI Thinks Resolved
    Part Number: TPS7A78 Regarding TPS7A78, I see in the datasheet that the highlighted input voltage range is 70 to 270VAC. I understand that Cs and Rs affect the maximum AC supply voltage, so: Can this device support 347 to 480VAC input with a specific…

  • TPS7A78: The value of applied voltage to Csin

    TI Thinks Resolved
    Part Number: TPS7A78 Hi Could you please let me know the value of applied voltage to Cscin. (I know the recommended voltage rating is over 35V. I want to know the actual voltage value.) Customer plan to use the Half-bridge configuration. In this case…
    • Answered

  • TPS7A78: Load greater than 120mA - parallel outputs?

    Resolved
    Part Number: TPS7A78 Hello, I need to supply a load with 5V/0.3A. I see in the datasheet that the maximum allowed is 120mA. Is it allowed to connect 3 units of TPS7A78 in parallel? Can I share the Cs capacitor with all the units? Do TI have a smaller…
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  • TPS7A78: Output re-startup at Slow down mode(100ac to 0ac)

    Resolved
    Part Number: TPS7A78 Hello My customer is evaluating TPS7A78EVM now. They have a question. Could you please support the following question? Customer comment is below, We do a slow-down test on TPS7A78EVM (Half-bridge mode) and can't understand a waveform…
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  • TPS7A78: SCIN voltage calculation

    TI Thinks Resolved
    Part Number: TPS7A78 Hi team, On the datasheet of TPS7A78, section 7.3.7, I found that the Vscin=4*(Vldo+0.6V)-2.5V, so the Vscin should be around 20V. But according to the block diagram, SCIN should be the output of half bridge/full bridge rectified…
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  • TPS7A78: Pin to Pin Open/Short test/ External components Open/Short test

    Resolved
    Part Number: TPS7A78 Hi My customer have question about the behavior at Pin to Pin Open/Short and External components Open/Short. Please refer the attached file that is considered by customer estimation. Red: some measures should be considered Yellow:…
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