There are 2 boost circuits on the Antminer D7 hash board, one is 18V and the other is 23V. The 23V step-up circuit is different from the 18V boost circuit. It consists of boost chip, boost inductor, rectifier diode, and capacitor. The boost circuit output voltage 23V is used to work with the DC control circuit to turn on the MOS tube chip on the hash board.
Click To Watch