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  • RE: BQ25751: How to design the BATFET drive circuit when the system power is off and how to design the buck boost charging FET if the charging only in buck mode.

    Resolved
    Hello Sun, sun qiyun said: Use a general purpose thick film resistor rather than an automotive metal resistor for R2 This should not be an issue, I recommend choosing one that has similar tolerance and power rating as the one used on the BQ25751 EVM. …
    • Answered

  • BQ25750: Simple Buck Boost charger - no power path FET - no reverse mode

    Resolved
    Part Number: BQ25750 Other Parts Discussed in Thread: BQ25756 Tool/software: I am not sure where to connect the SYS terminal in this circuit. I think it should be directly connected to the battery, but some guidance would be very welcome. Regards, Marc…
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    • Answered

  • RE: TPD1S514: How to calculate the total loss inside the device with FET current pass

    Resolved
    Hi Shinichi. I will close now. Regards, Eric

  • LM5146DESIGN-CALC: Vin = Vout at brown-out (power on the high side fet)

    TI Thinks Resolved
    Part Number: LM5146DESIGN-CALC Other Parts Discussed in Thread: LM5146 , LM25148 Tool/software: Hello, i need a normal buck regulator (for example a LM5146) from Vin = 13V-17V to Vout = 12V. (4S Li-accu to 12V) The special reqiurement is, that i need …
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  • LMR51440: To calculate switching loss, could you please provide Vf of the body diode and rise/fall time of the FET

    Resolved
    Part Number: LMR51440 Other Parts Discussed in Thread: LMR51430 Tool/software: Dear Specialists, My customer is considering LMR51440 and LMR51430. They have a question about the Vf of low side FET and rise/fall time of the FET. I would be grateful if…
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    • Answered

  • RE: LM5146-Q1: Loss Calculation of FET when paralleling MOSFETs

    Resolved
    Thank you too. I will close out this thread.
    • Answered

  • LM5146-Q1: Loss Calculation of FET when paralleling MOSFETs

    Resolved
    Part Number: LM5146-Q1 Tool/software: Hello experts, LM5146-Q1: Loss Calculation of FET when paralleling MOSFETs - Power management forum - Power management - TI E2E support forums Based on the discussion above, I wrote the equations for parallel MOSFET…
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    • Answered

  • LM5069QUICK-CALC: LM5069 Design Calculator with FET Recommendation

    Resolved
    Part Number: LM5069QUICK-CALC Other Parts Discussed in Thread: LM5069 Dear team, I'm using the LM5069 Design Calculator with FET Recommendation for SOA calculation However Some of the green cells in the calculator is invalid. 1. can't set the load…
    • Resolved

  • LM5143: ti.com Synch Buck FET loss calculator result looks questionable?

    TI Thinks Resolved
    Part Number: LM5143 Other Parts Discussed in Thread: CSD18533Q5A , CSD18563Q5A , LM5145 Hi, Just downloaded the Synch Buck calculator from ti.com, and for one of their synch buck chips, i got it to calculate the switching loss. It said top FET switching…

  • CSD19501KCS: Clarification of a parameter in MOTOR-DRIVE-FET-LOSS-CALC

    TI Thinks Resolved
    Part Number: CSD19501KCS Other Parts Discussed in Thread: MOTOR-DRIVE-FET-LOSS-CALC , Hi, In the MOTOR-DRIVE-FET-LOSS-CALC Excel sheet, the equations tab contains an equation to calculate RDS(on) with temperature. But I am unable to understand what ΔRDS…

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