Part Number:LM34927
Hi Sir,
My customer is using LM34927 as aux power controller of their DC/DC bricks. The testing input voltage is 50V and otherparameters/output loads are shown below.
They want the VOUT1 to be 10.5V, so they choose the feedback resistors R4/R5 as below ,15k and 2k, according to the calculation.
However, they found that VOUT1 is not 10.5V, and is changing a lot with different R3 and C7. The testing results are shown in the chart below.
Could you please tell us what's going wrong here?