Dear Ezekiel,

I've made my part number selections based on your recommendations. Kindly review them to ensure they are suitable:

• L1: SRR7045-471M - I hope this inductor will fit, I need this footprint.

• R1: RMCF0603FT11K8

• R3: ERA-3AEB2491V

• LNK3207

• Regarding the input capacitor, I'm unsure about the minimum capacitance needed. I planned to use two 11uF capacitors in parallel. However, there's a height constraint on the PCB, and I'm having trouble finding capacitors with a height of 0.531 inches (13.50mm). Do you have any suggestions for capacitors that would meet this height requirement?

Thank you for your assistance.

Hi,

Thank you for using PI-Forums.

attach is a PIXLS for design. you can download it:

step1. right click then choose save link as then save.

step 2. open you PIEXPERT then Choose Open Design.

step 3. Upload the file to view the specs.

the design uses a LNK32x8 with reduced Current limit (Cbp = 1uF).

for L1 I based the specs from SRR7045-331.

for input Caps. you can search from AISHI. we have a cap from them the 10uf 400v that is 13.35mm in height.

regards,

Sigris

I would appreciate it if you could review the attached schematics.  unfortunately, I'm not achieving the desired output. I was expecting an output of 12 volts and 360mA, but I am only getting around 5 volts. I kindly request your assistance in addressing this issue.

Regards,

Ashiq k

+917034468209

I would appreciate it if you could review the attached schematics.  unfortunately, I'm not achieving the desired output. I was expecting an output of 12 volts and 360mA, but I am only getting around 5 volts. I kindly request your assistance in addressing this issue.

Regards,

Ashiq k

+917034468209

Hi,

Thank you for using PI-Forums.

base on your schematic, your design is very similar on the reference design. so it should work. you can add a 10 ohm resistor in series at c23. to make a rc filter to filter out unwanted noise on fb pin.

Fb pin ref Voltage is 2V. using voltage divider. 2V = Vout * (2.49kohms/(2.49kohm+11.8kohm)) >> Vout = 11.4779 V.

did you build the circuit or is it on simulation? 

we also have a RDR-912 which has 12V and 550mA output it uses a lnk3207 and closer to your desired output.

rdr-912_non-isolated_buck_converter_small_appliances_linkswitch-tn2.pdf (power.com).

regards,

Sigris.