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  • TPS62142 regulation issue at light load

    Posting for a colleague: We are using TPS62142RGT buck regulator to step down from 5V to 3.3+5%. There is an inrush current controller on the 5V input (plugs to live 5V source). The load on 3.3v is between 70 to 90 mA depending on how many LEDs…

  • RE: TPS62142 and EMI

    10uF nominal is fine. The issue is that the effective capacitance at ~7V is too low due to the DC bias effect. Here, we have only 3 uF effective C. This gets much worse as Vin increases. A good rule of thumb is to have about half of the nominal capacitance…
    • Answered

  • TPS62142 input voltage derating?

    Resolved
    Other Parts Discussed in Thread: TPS62142 I have a question regarding the input rail for the TPS62142: The input rail used currently is 15V +/- 1V. The datasheet specifies a 17V recommended max and a 20V absolute max. I'm sure this max is realistically…
    • Resolved

  • RE: TPS62142/62143* OVER CURRENT PROTECTION?

    i got it by mail. please advise your e-mail address so i can send it to you
    • Answered

  • TPS62140, TPS62142

    Resolved
    Other Parts Discussed in Thread: TPS62142 , TPS62140 Hi! When will I be able to make designs in SwitcherPro with the TPS62140 and the TPS62142? Kind regards Lars
    • Resolved

  • TPS62143: Mechanical switch on EN causes failure

    TI Thinks Resolved
    Part Number: TPS62143 Other Parts Discussed in Thread: TPS62142 , I am having problem with the TPS62142 and the TPS62143 failing on a system when disabled/re-enabled. We are using the recommended circuit, except the EN pin is connected to 12V and GND…
    • Answered

  • RE: TPS62143: Selection of suitable buck converter for application

    Resolved
    Hi Yes, I need both 5V and 3.3V. I would like to use TPS62143 to derive 5V from the Li-ion battery as mentioned above. For 3.3V, I would like to use TPS79633, with it's input being 5V, obtained from TPS62143. Pl. confirm if this scheme is alright…
    • Answered

  • TPS62140: Using tps62140 to get 1.2V but get 2.0V

    Resolved
    Part Number: TPS62140 Other Parts Discussed in Thread: TPS62142 , Using the same resistor divider for tps62140 as in datasheet for 1.2V but get 2.0V (75 kOhm and 150 kOhm). After tps62140 enabled tps62142 (from PG pin of tps62140 to tps62142). From tps62142…
    • Resolved
    • Answered

  • RE: AM3352 resetin_out

    Resolved
    The most likely time were the AM335x WARMRSTn terminal could drive a logic-high pulse begins as soon as VDDSHV6 begins to ramp and remains in that state until VDD_CORE ramps to the recommended operating voltage. So the TPS62142 will need to powered…

  • RE: AM3352 power domains

    Hi Paul, Thanks for your reply. It is mentioned in datasheet that 'peripheral never sources a voltage outside the valid input voltage range,including power supply ramp-up and ramp-down sequences'. The PMIC outputs are not sufficient to power some…

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