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Tool/software:
See Figure 9-2. Datasheet calls out 250kHz PWM signal - but I thought HSS were limited to only a few kHz.
Can you confirm if this is typo in datasheet? I assume author meant 250Hz instead of 250kHz.
Thanks.
Tyler
Tyler,
Good question- and yes, this is a misprint. High-side switches in general top out at around 2Khz switching frequency (with some exceptions). Generally the two things that limit PWM frequency are:
We have a good application note that goes into the details of PWMing high-side switches at https://www.ti.com/lit/pdf/slvaf10
One thing to note is that in applications where the PWM frequency/duty are too high for the high-side switch, it is common to use a low-side switch for the high-frequency switching and a high-side switch for the protection features such as:
Best Regards,
Tim