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Original question:

TPS92515-Q1: what is the min duty cycle can TPS92515 can support with the PWM=30HZ, tha

TPS92515-Q1: Maximum switching frequency

Jessica Riley
Intellectual 300 points
Part Number: TPS92515-Q1
Other Parts Discussed in Thread: TPS92515HV

What is the maximum switching frequency of the TPS92515HV?  Assuming maximum output current of 2A.

  • +1
    TI__Genius 16350 points

    It is actually affected by many factors in the design, such as input, output voltage range, power loss, operation temperature etc. 

    For example, frequency variants with output voltage and/or input voltage. Thus, highest frequency happens @ Vin= Vin,max, Vo=Vin/2;  

     

    Also, you need to consider power loss in device and acceptable junction temperature rising under worst condition. For power loss and junction temperature, you may refer to 8.3.9 Junction Temperature Relative Estimation in datasheet. Make sure that efficiency and thermal dissipation is ok with highest frequency.