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Showing 29 results View by: Thread Post Sort by
  • PHILIP HSU
    PHILIP HSU
    • over 1 year ago
    • Power management
    • Power management forum

    TPS7A78: TPS7A78 incluse some circuit protection in the front of Full bridge recitifier or not

    TI Thinks Resolved
    Part Number: TPS7A78 Hi Sir,. please help to check (1) What is C6 , R5 voltage rating and what is footprint should I use for this AC/DC application (2) Should I incluse some circuit protection in the front of Full bridge recitifier or not. (3...
  • PHILIP HSU
    PHILIP HSU
    • over 1 year ago
    • Power management
    • Power management forum

    TPS7A78: Please share the TPS7A78 CAD file for design

    TI Thinks Resolved
    Part Number: TPS7A78 Hi Sir,. please share he TPS7A78 CAD file for design,. thanks
  • John Turner
    John Turner
    • over 1 year ago
    • Power management
    • Power management forum

    TPS7A78: TPS7A78 Negative Voltage output?

    TI Thinks Resolved
    Part Number: TPS7A78 Is it possible to generate a -5V rail using the TPS7A78?
  • Bart
    Bart
    • over 1 year ago
    • Power management
    • Power management forum

    TPS7A78: 3-phase AC supply - device connections

    • Resolved
    Part Number: TPS7A78 Team, can someone confirm whether the connections in the marked area below
  • Brian Angiel
    Brian Angiel
    • over 1 year ago
    • Power management
    • Power management forum

    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...
  • James Zhan
    James Zhan
    • over 1 year ago
    • Power management
    • Power management forum

    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...
  • Mike O'
    Mike O'
    • 8 months ago
    • Power management
    • Power management forum

    RE: ACDC Power Supply 220Vin AC -5Vout DC @100mA, ISOLATED but with NO transformer?

    Hello, The TPS7A78 is for non isolated designs? You can easily do this with a flyback converter. Generally PFC is not needed for less than 75W for general applications. I think lighting requires PFC at 25 W greater. So I am not sure why you...
  • JCHK
    JCHK
    • over 1 year ago
    • Power management
    • Power management forum

    RE: TPS7A78EVM-011: test set-up

    HI Vincenzo, The critical resistor is either R5 or R6. The Values on the EVM are sized to per the maximum clamp voltage of RV1. As you correctly state above, thsi is what ensures that the surge current into the device is kept under 2.5A for a line...
  • Haidar Hamoo
    Haidar Hamoo
    • over 1 year ago
    • Power management
    • Power management forum

    RE: TPS7A78EVM-011: TPS7A78EVM-011, wattage spec for R5, R6, and R7

    Hi Sana, TPS7A78 product folder is available online and you can get 3.3V output samples now, as for evaluation module (EVM), unfortunately TI store run-out of stock but they should replenish stock within 2 months. The EVM online users's guide and...
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