12V-19V Boost SMPS

435

07:44:43

33W DC-DC converter designed to power my laptop from vehicle power. As-is, the sim cct is 73% efficient.

published 10 years ago

sherazahamad

10 years ago

Where r the out put points

nikisalli

10 years ago

Nice circuit! Bookmarked

jpoulin0901

10 years ago

The lamp represents and approximates the demand of the load. The factory PS that came with the computer says it puts out 1.75A at 19V for a total of 33.25W. I designed this cct with parts I know I have on hand which is why I have 2 zeners in series. The MOSFETs are IRFZ46N, which boast 16.5mohm ON Rds, 53A continuous Idrain and integrated 55V avalanche diode. PS: This is my other account that I use to run EC 2.16. 2.18 came out a bit doughey imho.

jpoulin0901

10 years ago

A practical version could probably benefit from an added push-pull stage to drive the gate of my fet as hard as possible to minimize switching losses.

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