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TLV62569: TLV62569APDRL - Efficiency calculation

Durgesh Sabnekar
Prodigy 90 points
Part Number: TLV62569

Hi,

I am currently working on "calculating efficiency for Sync-Buck Dc-Dc converter TLV62569APDRL".

The following are the design parameters:

Input voltage, Vin = 3.6 V DC

Output voltage, Vout = 3.3 V DC

Output current, Iout = 200 mA

Please provide the following details, to calculate the “Switching Loss”, I am not able to get these values in Datasheet.

(Reference: TI Application Note: SNVA237A–September 2007–Revised April 2013)

1. tswHS_rise          - High-side MOSFET rise time (the time it takes the gate voltage to rise from its threshold value to the end of the plateau interval)

2 .tswHS_fall           - High-side MOSFET fall time (the time it takes the gate voltage to fall from the beginning of the plateau interval to the threshold value)

 


Thanks & Regards,

Durgesh Sabnekar

  • 0
    TI__Expert 8420 points

    Hi Durgesh,

    Thanks for posting we will get back to you by Monday

  • 0 in reply to Sabrina
    TI__Expert 8420 points
    Hi Durgesh,

    There parameters are not available for publishing, although the app notes describe a complex equation, the IC model is more complex.
    The switching losses have been modeled in Webench, I would recommend to use the Webench modelling for your calculation.

    I would suggest to simulate it for your application condition and use the IC losses "IC Pd" for calculating the efficiency in your particular application, with your BOM.