Hi Experts,
The feedback resistor divider(between FB and GND) is limited less than 100Kohm. Would you please tell a reason why? If it is set to exceed 100Kohm what is happen?
Best Regards,
Fujiwara
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Hi Experts,
The feedback resistor divider(between FB and GND) is limited less than 100Kohm. Would you please tell a reason why? If it is set to exceed 100Kohm what is happen?
Best Regards,
Fujiwara
Hi Fujiwara:
There is a FB leakage current into IC (Ifb). If the value of the resistance is too large, the additional voltage caused by the leakage current is large.
Here is an application note showing detail calculation.