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TPS61085: Switching Frequency

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Part Number: TPS61085

Hello ,

We are using IC TPS61085A in a boost converter module. In one of the validation  or evaluation tests related to Switching behavior & Frequency  we have observed the switching frequency around  1700 kHz.

The datasheet spec. shows the range 900 kHz to 1.5 MHz.  I wanted to know the reason behind the out of specification range.

The test procedure is as follows:

The load is is varied between 10 mA to 90 mA using FET switching circuitry. Switching frequency of circuitry is set for 20 Hz (50% duty), Rise time < 5 us (Image attached for reference)


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