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  • TPS40009: The uneven chip pins for TPS40009

    Part Number: TPS40009 Hi, Our end customer feedback us TPS40009DGQR has the uneven chip pin issue, please kindly review below picture and check with your product line if there are any other customer feedback the issue, thanks.

  • TPS40009: TPS40009: Problems replacing with TPS40005 and TPS40003.

    Part Number: TPS40009 Other Parts Discussed in Thread: TPS40005 , , TPS40003 , TPSM82866A Dear TI power team, At the company, we have a product that uses the TPS40009 in a buck regulator designed to deliver 3.3V / 5A. Currently, there is no stock available…
    • Answered

  • TPS40009: TPS40009DGQR output is Abnormal

    Resolved
    Part Number: TPS40009 Other Parts Discussed in Thread: TPSM82480 , TPS62480 , Hi : When customers use TPS40009DGQR, Vin is 3.3V, output is 1.0-1.1V, current value is 4.5A. But after mass production, customers found that the PIN8 output voltage of the…
    • Resolved

  • TPS40003: 3.3Ohms resistance beetwen SW and MOSFET

    TI Thinks Resolved
    Part Number: TPS40003 Other Parts Discussed in Thread: TPS40009 , , TPS40001 Dear power team, TPS40003 is supposed to be P2P with TPS40003, but on TPS40003 we have a 3.3Ohms resistance between SW and MOSFET. What is the purpose of this resistance…
    • Answered

  • RE: TPS40200: Reference document Under the hood of low voltage dc/dc converters 2002 is not accessible

    Resolved
    Hi Bob, Here is the document attached: 1830.slup206.pdf Best regards, Ridge
    • Answered

  • RE: Buck converter VFF control mode

    Resolved
    Hello Victoria, I have a new question, ,from the equations of GCL and ZCL, can we think that a higher T offers a better perturbation suppression of vin to vo and io to vo? And in the process of loop design, what can we do practically to get higher T…

  • RE: LMZ12001: LMZ120x and LMZ140x dropout voltage

    Hi John, The datasheet doesn't have detail explanation. But it is basic Buck converter theory. Please review attached application note for better understanding. slup206.pdf Thanks, Nancy

  • TPS40422: Compensation Suggestion

    TI Thinks Resolved
    Part Number: TPS40422 Tool/software: Hi expert, Customer used TPS40422 for 12Vin to 0.88Vo/40A and use the calculation tool for compensation but find the phase/gain margin is not good. Would you please advise how to adjust the stability? TPS40KType…

  • RE: TPS40077: Schematic review

    Denny Huang The schematic looks better now. Looking at the compensation spreadsheet, I had to change the part number to TPS40077, and after doing do, I noticed that the phase margin at the L-C resonance is very low. Looking into why, I can see…
    • Answered

  • RE: TPS40305: Issue with transient current

    Resolved
    Amir Eshraghi I took a look at the compensation. It is certainly conservative for a 1.2MHz switcher, but I don't see any issue. I have attached the Excel spreadsheet with the loop analysis. TPS40KType III Loop Stability kVenable_TPS40305.xls So…

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