When the output of LM5119 is no load, the input power consumption is especially large, up to about 4W.What's the reason?
Should the resistance between IC VIN pin and +48V be increased?
When the input is 48V, the resistance between VIN and 48V is too small, is it the reason for the increase of power consumption?
If external power supply is used, the input power consumption of LM5119 will be reduced,
However, the IC internal power supply of LM5119 is used within a short time of starting up
If the LM5119's internal power supply is completely disabled, sometimes the switch will have no output
Is it necessary to use the internal power supply for LM5119 before switching to the external power supply after the normal operation of LM5119?
How to solve the problem of high no-load input power consumption when IC internal power supply is used?