• TLV62569A: side effect of changing C3 value

    Part Number: TLV62569A

    Hi Team,

    Could you please advise if there will be any side-effects when C3 applies 33pF?

    Thank you!

    Thanks,

    Patty Chuang

  • TLV62569: How to reduce the voltage drop in a dynamic load as efficiently as possible?

    Part Number: TLV62569

    Dear Team,
    Hi, I would like to inquire about the buck converter.
    The circuit is composed as follows, and the ripple of the output voltage is as follows.


    At this time,I try to keep the output voltage ripple within 36mV which is 2%…

  • TLV62569: What will be maximum ripple of voltage at 800mA load current using TLV62569 ?

    Part Number: TLV62569

    Hi Ti Team,

    We are planning to use TLV62569 in our high-speed design board. We required 1.1V output from 3.3V supply rail. Allowable tolerance for 1.1V rail is 1.05V to 1.15V.

    We have tried to find ripple voltage value for 1.1V @…

  • TLV62569A: The differences between TLV62569 and TLV62569A.

    Part Number: TLV62569A
    Other Parts Discussed in Thread: TLV62569

    Hello,

    Please let me know the differences between TLV62569 and TLV62569A.

    Thank you.

    JH

  • TLV62568A: What is the Iq of TLV62568A and TLV62569A?

    Part Number: TLV62568A
    Other Parts Discussed in Thread: TLV62569A

    My customer would like to know the Quiescent current of the TLV62568A and TLV62569A. They should be similar and I expect myself in the range of several tens of uA. However what is the Iq…

  • TLV62569A: What is the min and max input leakage current into the FB pin?

    Part Number: TLV62569A

    Hi team,

    can you please provide some insight on the expected min and max values for the input leakage current into the FB pin (I_FB) for both the TLV62569ADRLR and the TLV62568APDRLT across full operating temp range?

    my customer…

  • TLV62569: testing waveforms difference

    Part Number: TLV62569
    Other Parts Discussed in Thread: TLV62568,

    Team,

    Good day. My customer met TLV62568 shortage, so we consider to use TLV62569 to replace it.
    But they are some testing waveforms difference in datasheet and need your advise.


    Q1_ TLV62568P_…

  • TPS62825A: EMI performance compared to TLV62569A

    Part Number: TPS62825A
    Other Parts Discussed in Thread: TLV62569A

    Hi, expert,

    My customer is using TLV62569A in HMI, but they found the EMI and anti-EFT performance is not so good. We recommended our new device TPS62825A, but customer wonder if the EMI…

  • TLV62569A: Short Circuit

    Part Number: TLV62569A

    Is TLV62569x coming with hiccup mode during short circuit event? Customer tried to do the output shorting to Grounding. The behavior is likely the hiccup mode. however, i don't see the "hiccup mode" in the d/s. There is only Over…

  • RE: TLV62569A: failed in EN55032 radiated test, help to review the layout

    Hi Yue,

    Thanks for the update.

    The high-frequency noise can be attributed to both the VIN and SW pins. Suppressing the HF ringing on the SW pin can be achieved by adding a small capacitor (tenths to hundreds of pF) between its pin and GND. However, please…

  • RE: TLV62569A: failed in EN55032 radiated test, help to review the layout

    Customer don't have a 1G osc, so, I have to ask them to send me a board to test for them.  you can mark this as "solution suggested", I will inform you if I done the test. or post a new one. 

    BTW, according to their pin4 waveform, I can see…

  • RE: TLV62569A: failed in EN55032 radiated test, help to review the layout

    Hi Yue,

    I will wait for your feedback.

    Thank you.

    Best regards,

    Excel

  • RE: TLV62569A: failed in EN55032 radiated test, help to review the layout

    Excel,

    Thanks for the reply. I will follow up further test you mentioined. 

     

  • RE: TLV62569A: failed in EN55032 radiated test, help to review the layout

    Hi Yue,

    Please see the attached file for the layout proposal to improve the Radiated EMI.

    On the other hand, can you ask customer to measure the VIN-GND pins and SW-GND pins waveforms (oscilloscope bandwidth set at 1GHz)?

    TLV62569A_layout proposal.pd…

  • TLV62569A: failed in EN55032 radiated test, help to review the layout

    Part Number: TLV62569A

    Hi,

    My customer used two TLV62569A in their speaker products. 5V usb in, 3.3V and 1.8V output. so far, they failed in EN55032 radiated test. I know it is a systematic problems. just  help to see if TI part have potential issue.  appreciate…

  • RE: TLV62569: Question about TLV62569DR

    Hi Jiayu,

    Achieving a 30mV max ripple voltage might be difficult for TLV62569DR because it operates at PFM mode to reach a high efficiency at light load conditions. What is the minimum load current? Because the worst-case condition typically occurs at…

  • RE: TLV62569A: Output capacitance.

    Hi Kengo,

    thank you for your question.


    In general it is not forbidden to change the output capacitor as long as it meets the application requirements.
    Loop stability, ripple voltage, load transient and startup time are just a few of the parameters that…

  • TLV62569A: Output capacitance.

    Part Number: TLV62569A

    Hi team,

    I'd like to know about output capacitance.

    My customer wants to use add 630uF(an aluminum electrolytic capacitor) for it is a measure for a momentary power failure.
    Can it use?

    Sincerely.
    Kengo.

  • RE: TLV62569A: Max Cout and ESD diode from EN to Vin

    Hi Russell,

    The designer is still on vacation leave and will be back in the office on Monday.
    As we are already discussing your queries internally, so I will close this thread.

    Thank you.

    Best regards,

    Excel

  • RE: TLV62569A: Max Cout and ESD diode from EN to Vin

    Hi Russell,

    The maximum optimal value for Cout is 47uF. In case the customer wanted to use a higher Cout value, then they need to verify the loop stability, ripple voltage, and transient response if it meets their specification.

    I need to verify if there…

  • TLV62569A: Max Cout and ESD diode from EN to Vin

    Part Number: TLV62569A

    I have two questions.  

    What is the maximum allowed Cout on the TLV62569A output?  Customer has 91uF of Cout (before de-rating) with 1uH in 1.8V application.  

    Also, is there an ESD clamp on EN pin?  What does the structure look like…

  • RE: TLV62565: FB resistor

    Hello Yamaguchi-san,

    The TLV62565 was not designed to operate purely on PWM mode. Passive components such as output inductor and capacitor as well as the IC process variation can influence its mode of operation. I suggest using either TLV62658A (1A) or…

  • TPS568230: Recommended LC filter setting

    Part Number: TPS568230
    Other Parts Discussed in Thread: TLV62569A

    Hi Team,

    One quick question about recommended components value of COUT in the table3 in datasheet.

    Is this effective capacitance or normal one?

    As the descriptions are different in each datasheet…

  • RE: TLV62569A: High Duty Cycle Low Dropout Operation

    Hi Jiayu,

    Thanks for your quick response.

    In that case, I will close this thread and Please send me an email for any further support. Please hit "Resolved" if you agree.

    Regards,

    Febin

  • RE: TLV62569A: High Duty Cycle Low Dropout Operation

    Hi Febin,

    Thanks a lot for help,TLV62569A  seems not match customer's requirements, I will follow up and let you now if any update.


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