Antminer S19 hash board has a total of 76 BM1398 ASIC chips and is powered by APW12 PSU. The MOS tubes on the S19 hash board is different from the 17 series. The conduction condition of these 4 MOS tubes is that their G-pole input is high level, and they will not play a role in reducing the voltage in the circuit. When the PIC chip is working normally and 3.3V is input, the four MOS tubes will be turned on. Each domain has only one LDO1.8V and PLL 0.8V, and all 0.8V is powered by the LDO1.8V of this domain. Quickly learn how to properly repair an S19 hash board with the Antminer S19 hash board repair tutorial video.
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