Patent ID: 11909300
Assignee: SHANGHAI BRIGHT POWER SEMICONDUCTOR CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 5:
6. The switch-mode power supply controller of claim 4, wherein the built-in energy storage unit further comprises a Zener diode and a low-dropout regulator, the Zener diode having a cathode terminal connected to an input terminal of the low-dropout regulator and to the terminal of the built-in energy storage unit where the built-in energy storage unit is connected to the output-voltage power supply unit and the high-voltage power supply unit, the Zener diode having an anode terminal that is grounded, the low-dropout regulator having an output terminal serving as the power output terminal of the built-in energy storage unit and being connected to the operating voltage terminal of the logic control unit, the low-dropout regulator having another input terminal coupled to a first reference voltage, the low-dropout regulator configured to regulate a voltage from the built-in energy storage unit into the operating voltage for the logic control unit according to the first reference voltage.