The invention discloses a CNFET-based high-speed digital
low dropout regulator power supply
chip, which comprises a
silicon-based SOC and a CNFET power
supply management chip layer grown above the
silicon-based SOC, a plurality of digital LDOs are arranged on the CNFET power
supply management chip layer, the input end of the CNFET power
supply management chip layer is connected to an external power supply end, and the output end of the CNFET power supply management chip layer is connected with the
silicon-based SOC to supply power to the silicon-based SOC. The digital LDO comprises a
comparator, a coarse adjustment unit, a fine adjustment unit and a
voltage output unit which are connected in sequence. The input end of the
comparator is respectively connected with a reference
voltage end and the
voltage output unit, and the output end is respectively connected to the coarse adjustment unit and the fine adjustment unit; the coarse adjustment unit comprises an adjustment controller and a coarse adjustment power
transistor array which are connected with each other; the fine adjustment unit comprises a
shift register and a fine adjustment power
transistor array which are connected with each other. According to the invention, high-efficiency and stable
voltage regulation can be realized under the condition of considering the response speed and the regulation precision.