Patent ID: 11929678
Assignee: SJ SOLUTION CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. The power supply unit using intellectual pre-regulator as set forth in claim 1, wherein said voltage dropping part is a sink buck or a non-sink buck, a precise control is performed by using all of the elements of a switching mode power supply, a coil, a feedback circuit, an error amp, a precise comparator, a temperature protection, a current limit circuit, the precise controls of said drooped voltage are treated in said voltage dropping part circuit, said voltage boost part circuit, to which a PWM duty is supplied in order to supply a supplement voltage for a short output voltage, is consist of a comparison circuit and a switching circuit to produce the voltage boost at the output port, a second voltage detection circuit is arranged between the positive pole of said output port and the negative pole of said output port, said detection-control part detects a voltage between the positive pole of said output port and the negative pole of said output port by said second voltage detection circuit, or said semiconductor switching control part detects the voltage between the positive pole of said output port and the negative pole of said output port by said second voltage detection circuit, said semiconductor switching control part controls switching for a first and second FETs based on voltage values to match the voltage of said output port to the required voltage of the electronic device connected to said output port.