I'm currently working with a MAX1771 chip, the design can maintain a stable voltage up to around 15kOhm and is as follows: 12V to 300V DC-DC Boost : Disregard NMOS and DIDODE Value
The inductor currently being used is a SRN1060-151M, unfourtanately it has a peak current of 1.25A and a saturation current of 1.8A. My guess is that the low saturation and peak current are causing problems with lower loads. I'm rather inexperienced with actually ordering proper parts and mostly ended up getting parts that fit the initial specs (matched values and picked low DC-resistance).
I take it that for a 9kOhm load I would need an inductor that can handle up to 3A. The NMOS is a STD8NM50N which can handle up to 5A and the DIODE is an EGL34G-E3/98GICT-ND.
Can anyone recommend an affordable inductor on DigiKey that can get the job done? Or changes to the circuit that may assist in making the 300V with 9kOhm load possible?
EDIT: 9kOhm load not 3kOhm, my bad.