Hi Team,
Customer use UC2843 in flyback and want to shut down the output through pulling down comp voltage, but they found when pulling it to ~0.5V, some parts have no PWM output but some parts have.
So want to check with you below how much voltage on comp can guarantee no PWM output. Thanks.
BRs
Given
Given
Figure 2, shown below is relevant…we’ve quoted +/-60% on these thresholds in the past (for other parts with slightly different implementation). But with 0.5V on COMP, no OUT switching should be seen. If the pulldown truly is holding COMP to ~0.5V, I suggest targeting half of this, “250mV” as per your customer’s interpretation.
Regards,
Steve M
