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TPS62230： On the output current value of TPS 62237 DRYT

user5772796
Prodigy 30 points
Part Number: TPS62230
Other Parts Discussed in Thread: TPS62802, TPS62821

Hi

I am using TPS 62237 DRYT.

What is the tolerance of the output voltage 3.3 V and the min and max values of the output current?

Please tell me when it was someone you know.

Thank you

  • 0
    TI__Guru*** 142750 points
    Hi User,

    This is a power management device, but this is the amplifiers forum. Just FYI.

    The output voltage tolerance is shown in the D/S on page 7, under 'output voltage accuracy'.

    The device's current limit limits the output current, as explained in section 8.4.5. The current limit tolerance is shown on page 7 as well.

    Finally, we have the newer, smaller TPS62802, or the higher current, more efficient TPS62821.
  • 0 in reply to Chris Glaser
    Prodigy 30 points

    こんにちは、Glaserさん

    質問に答えていただきありがとうございます

    出力電圧許容値は3.6Vの時、high-sideとlow-sideの値になることがわかりましたが、

    やはり出力電流の公差がよくわからないです。

    データシートの8.4.5項以外では、どこを見るとよく理解できるのでしょうか...?

    すみませんが

    よろしくお願いします。

    user5772796こと佑介西河

  • 0 in reply to user5772796
    TI__Guru*** 142750 points
    This is an English forum. Please re-post in English.
  • 0 in reply to Chris Glaser
    Prodigy 30 points
    Hello, Mr. Glaser

    I'm sorry.
    Thank you for answering the question.

    It was found that the output voltage tolerance value is 3.6 V, it is high side and low side value, but again the tolerance of the output current is not known.

    Where can I better understand other than the data sheet 8.4.5? ...?

    Excuse me

    Thank you.

    user5772796 Yusuke Nishikawa
  • 0 in reply to user5772796
    TI__Guru*** 142750 points
    Hi Nishikawa-san,

    I'm not sure what 3.6V refers to. The maximum output voltage should be 3.3V + the 2.5% tolerance = 3.3825V.

    Section 8.4.5 should explain that, in current limit, the inductor current will be at a peak of the high side current limit and a minimum at the low side FET current limit. The average of the inductor current is the output current. So, you can determine the maximum output current by the current limit values. Typically, it is 845 mA.