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Part Number: UCD3138ALLCEVM150


In LLC-HB firmware,The following statement:

#define TH (1 / (250e3)) //PWM mode period. 250khz  This is also the maximum resonant frequency (ZCS feature increased from 150KHz)

But in UCD3138ALLCEVM150  User's Guide,

In pwm mode, why are the frequencies of the two different?

Thank you!