Hey guys. I try to make simple dc/dc converter . I tried with buck converter chips but all of them are regulators. I would like to have fixed ratio converter, or when the Vin changes Vout follows the same by choosen ratio. I presume that I need fixed duty PWM to achieve this, but it looks pretty complex and "current hungry". My voltages are 7-40 Vin , Vout@36v=7v/125ma. Input current should be lower than 40ma. Can you advice what type of circuit can achieve this?
Cheers. Milan
Cheers. Milan