Power management circuit in low-power double data rate memory and management method thereof

A power management circuit in a low-power double data rate memory, which is configured to manage a plurality of power supplies of the low-power double data rate memory according to a first reference voltage, a second reference voltage and a control signal, the power management circuit in the low-power double data rate memory comprising:

• a first low dropout regulator having a first transmitting terminal and a second transmitting terminal, wherein the first transmitting terminal is configured to transmit a first voltage of the power supplies, the second transmitting terminal is configured to transmit a second voltage of the power supplies, and the first low dropout regulator adjusts a first voltage difference between the first voltage and the second voltage according to the first reference voltage;
• a second low dropout regulator having a third transmitting terminal, a fourth transmitting terminal and a fifth transmitting terminal, wherein the third transmitting terminal is configured to transmit a third voltage of the power supplies, the fourth transmitting terminal is configured to transmit the first voltage of the power supplies, the fifth transmitting terminal is configured to transmit a fourth voltage of the power supplies, and the second low dropout regulator adjusts a second voltage difference between the third voltage and the first voltage according to the second reference voltage and the control signal, and adjusts a third voltage difference between the fourth voltage and the first voltage according to the control signal;
• and
• a power network structure electrically connected to the first low dropout regulator and the second low dropout regulator and having a unit network space, wherein the power network structure is electrically connected to the first transmitting terminal and the second transmitting terminal through a first connecting point and a second connecting point, the second connecting point is separated from the first connecting point by a distance, and the distance is smaller than or equal to the unit network space.

A management method of a power management circuit in a low-power double data rate memory, which is configured to manage a plurality of power supplies of the low-power double data rate memory according to a reference voltage, the management method of the power management circuit in the low-power double data rate memory comprising:

• performing a voltage supplying step, wherein the voltage supplying step comprises supplying a first voltage to a first power network circuit of a power network structure and a low dropout regulator;
• and
• performing a voltage regulating step, wherein the voltage regulating step comprises configuring the low dropout regulator to generate a second voltage according to the first voltage and adjust a first voltage difference between the first voltage of a first transmitting terminal and the second voltage of a second transmitting terminal according to the reference voltage;
• wherein the low dropout regulator has the first transmitting terminal and the second transmitting terminal, the first transmitting terminal is configured to transmit the first voltage of the power supplies, the second transmitting terminal is configured to transmit the second voltage of the power supplies, the power network structure is electrically connected to the low dropout regulator and comprises the first power network circuit and a second power network circuit, the first power network circuit has a first connecting point electrically connected to the first transmitting terminal, the first power network circuit has a grid shape and a first unit network space, the second power network circuit has a second connecting point electrically connected to the second transmitting terminal, the second power network circuit has another grid shape and a second unit network space, the second connecting point is separated from the first connecting point by a distance, and the distance is smaller than or equal to one of the first unit network space and the second unit network space.