Patent ID: 11862228
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A power supply circuit, comprising:
a voltage source and multiple power supply circuits connected to the voltage source, wherein the multiple power supply circuits have power supply terminals and load units, and when the voltage source is effective and the multiple power supply circuits are in an enable state, the multiple power supply circuits pull up voltages of the power supply terminals to a preset voltage, and supply power to the load units during the pulling up process,
wherein the multiple the power supply circuits comprise at least one first-type power supply circuit and second-type power supply circuits, the first-type power supply circuit is configured to receive a first enable signal, and enter the enable state when the first enable signal is received, and each of the second-type power supply circuits is configured to receive a second enable signal, and enter the enable state when the second enable signal is received; and
a control circuit configured to: receive a flag signal, and transmit the first enable signal to the first-type power supply circuit when the received flag signal is in an effective state, wherein the effective state characterizes an effectiveness of the voltage source,
wherein the control circuit is further configured to: receive a plurality of external signals after transmitting the first enable signal, each of the external signals corresponding to one of the second-type power supply circuits and start times of different external signals being different; and transmit a second enable signal to a corresponding second-type power supply circuit when the flag signal and an external signal are received.