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Original question:

TPS56921 WEBENCH Support?

TPS56921: why we can't change the switching frequency for this part in the Web bench

waqar hyder
Intellectual 480 points
Part Number: TPS56921

We need to operate this at the maximum switching frequency of 1.6 Mhz as set by a resistor. There is no option in the web bench to change the frequency. It is set at 532 Khz or similar. Can this feature be implemented in the web bench for this part

  • 0
    TI__Genius 15135 points

    Hi, Sir

    1. TPS56921's max Vout is 1.48V, it cannot support 1.65V output voltage.

    2. For switching frequency setting, we should make the ON time of normal operation is larger than 150nS(minimum ON time.)

    Supposed the application condition: Vin=12V, Vout=1.48V, IC only supports ~800kHz max frequency, so you cannot change it to 1.6MHz in webench.