tmbg
Well-known member
Hi folks,
I designed a switching supply, a 12V -> 5V buck converter, first one I've ever done.
It's based around the MAX5033, http://pdfserv.maxim-ic.com/en/ds/MAX5033.pdf , and I pretty much used the circuit out of their notes verbatim (the one for the adjustable supply, on page 9), 47uF input cap, 33uF output cap, 220uH inductor, 30V 1A schottky diode, 41k2/13k3 thin film feedback bias network to set the output voltage.
Problem is, I'm not getting 5V out, I'm getting a 5V-8V sawtooth wave.
What exactly is going wrong here?
I designed a switching supply, a 12V -> 5V buck converter, first one I've ever done.
It's based around the MAX5033, http://pdfserv.maxim-ic.com/en/ds/MAX5033.pdf , and I pretty much used the circuit out of their notes verbatim (the one for the adjustable supply, on page 9), 47uF input cap, 33uF output cap, 220uH inductor, 30V 1A schottky diode, 41k2/13k3 thin film feedback bias network to set the output voltage.
Problem is, I'm not getting 5V out, I'm getting a 5V-8V sawtooth wave.
What exactly is going wrong here?