hi
i am building dc dc boost converter.....volt in 5v...vout 8v .....load 2ohm...n-ch Mosfet irlz44 ...mcu pic16f628a to drive the mosfet...inductor 3.3u 18A Current - Saturation 32A..........computer power supply...now the problem is that: when start with 25khz 1% duty the voltage step up a little ...25khz 10% duty the voltage step up a little.....25khz 20% duty the voltage step up a little....25khz 30% duty the voltage start to fall!...25khz 40% duty the voltage fall more!! what is the...
dc-dc boost converter
i am building dc dc boost converter.....volt in 5v...vout 8v .....load 2ohm...n-ch Mosfet irlz44 ...mcu pic16f628a to drive the mosfet...inductor 3.3u 18A Current - Saturation 32A..........computer power supply...now the problem is that: when start with 25khz 1% duty the voltage step up a little ...25khz 10% duty the voltage step up a little.....25khz 20% duty the voltage step up a little....25khz 30% duty the voltage start to fall!...25khz 40% duty the voltage fall more!! what is the...
dc-dc boost converter
