Multi-Die Package Power Segmentation for Current Reduction

The power supply is segmented into two independent circuits: a first power supply circuit that provides active power to all dice, and a second power supply circuit that provides standby power selectively to non-selected dice. This segmentation allows the non-selected dice to receive only minimal necessary power for logic circuit operation, thereby reducing unnecessary current consumption while maintaining simplified control structure.

Different power supply conditions are applied to different dice based on their selection state. Selected dice receive full active power from the first power supply circuit, while non-selected dice receive only standby power from the second power supply circuit. This local differentiation of power quality enables reduced current consumption in non-selected dice without affecting the operation of selected dice.

Instead of applying full active power to non-selected dice, the system applies only partial power (standby power) through the second power supply circuit. This standby power is sufficient to maintain logic circuit operation for sensing chip selecting signals and preparing for concurrent operations, but excessive enough to enable operational readiness without full power consumption.

The logic circuits in non-selected dice are maintained in a state where they can autonomously sense chip selecting signals and prepare for operation using only standby power. When a chip selecting signal is detected, these circuits can self-activate without requiring external intervention or full power application, enabling efficient operation control with minimal power consumption.