Power delivery to three-dimensional chips
The present disclosure includes a three dimensional (3D) integrated device comprising a first die having a first supply line and a second die having a second supply line, a power header, and voltage selection logic. The power header is connected to the first die and the second die and configured to generate a first voltage on a first voltage line and a second voltage on a second voltage line. The voltage selection logic is connected to the first supply line and the second supply line and configured to select between the first voltage line and the second voltage line for each of the first supply line and the second supply line.
1. A three dimensional (3D) integrated device, comprising:
a first die having a first supply line;
a second die having a second supply line;
a first sense line configured to provide a feedback voltage from the first die;
a second sense line configured to provide a feedback voltage from the second die;
a power header connected to the first die and to the second die and configured to generate a first voltage on a first voltage line and a second voltage on a second voltage line, the power header including a first voltage regulator having inputs of a chip supply voltage line and the first sense line and an output of the first voltage line the power header further having a second voltage regulator having inputs of the chip supply voltage line and the second sense line and an output of the second voltage line;
a voltage regulation circuit configured to modify the first voltage and the second voltage based on the feedback voltages provided from the first and second sense lines; and
a voltage selection logic connected to the first supply line and to the second supply line and configured to select between the first voltage line and the second voltage line for each of the first supply line and the second supply line, the voltage selection logic including a first multiplexor logic having inputs of the first voltage line and the second voltage line and an output to the first supply line, the voltage selection logic further including a second multiplexor logic having inputs of the first voltage line and the second voltage line and an output to the second supply line.
2. The device of claim 1 , wherein:
the voltage selection logic is part of the first die and the second die; and
at least a portion of each of the first voltage line and the second voltage line is a through silicon via.
3. The device of claim 1 , wherein:
the voltage selection logic is on a logic chip; and
at least a portion of each of the first supply line and the second supply line is a through silicon via.
4. The device of claim 1 , further comprising voltage determination logic configured to modify the voltage selection of the voltage selection logic for a die in response to a power consideration.
5. The device of claim 4 , wherein the power consideration is one of a die workload change, a die manufacturing defect, and a die operation.
6. The device of claim 1 , wherein the first die and the second die are configured to provide memory for a processor.