pwm frecuency
Hi,
I understand that the pwm frecuency must be 10KHz, but on my board I have about 3KHz. Any idea what´s wrong? I have an 8MHz crystal. thanks |
Should generally be about 8khz for most power igbts today at the low end. Newer ones are faster and therefore generate less heat as a rule of thumb.
Comments: sure your measuring method works? I could see 4 khz because you are using 1/2 the base frequency, And you should have some divisor process in the control chip. |
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