US 2011/0298534 A1Published application

Integrated circuit device

AssigneeThe University of Tokyo

InventorsKen TAKEUCHI, Teruyoshi HATANAKA, Koichi ISHIDA, Tadashi YASUFUKU, Makoto TAKAMIYA, Takayasu SAKURAI

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Abstract

The channel number detecting circuit 50 detects the operation channel number Nch based on the the output terminal voltage Vpgm after falling down when the output terminal voltage Vpgm falls down during the voltage boosting control, and the switching control circuit 70 generates the control clock signal CLK having the on-time and the off-time adjusted based on the operation channel number Nch and performs the voltage boosting control using generating control clock signal CLK. The voltage boosting control is properly performed based on the operation channel number Nch when the operation channel number Nch increase during performing the voltage boosting control. Thus boosting the power supply voltage Vdd up to the voltage V2 is accomplished.

Claims13

Dependent claims

An integrated circuit device comprising:

a plurality of integrated circuit chips having an integrated circuit operated at a specified voltage;
and
an interposer,
wherein the interposer comprises:
a voltage boosting supply circuit that boosts a power-supply voltage supplied from a power supply to the specified voltage and supplies the boosting voltage to the integrated circuit of the integrated circuit chips;
and
a chip control circuit that selects at least one of the plurality of integrated circuit chips and controls the integrated circuit so that the selecting integrated circuit chip is operated using the supplied voltage from the voltage boosting supply circuit,
the chip control circuit changes number of the selecting integrated circuit chips based on a specified control signal, and
the voltage boosting supply circuit comprises:
a boost converter having a inductor connected in series between an input terminal supplied with the power supply voltage and an output terminal supplying a voltage to the integrated circuit of the integrated circuit chip, a rectifying element connected in series between the inductor and the output terminal and rectifying current to a direction from the input terminal to the output terminal, and a switching element connected between the inductor and the rectifying element in parallel with the output terminal as viewed from the inductor;
a number-of-chip detecting circuit detecting number of operating integrated circuit chips that is number of the integrated circuit chips operating at a voltage supplied from the voltage boosting supply circuit based on a voltage of the output terminal of the boost converter after reduction when the voltage of the output terminal of the boost converter is reduced during being performed a voltage boosting switching control that controls the switching element so that the output terminal voltage reaches the specified voltage;
and
a switching control circuit generating a control clock signal having turn-on time and turn-off time adjusted based on the detected number of operating integrated circuit chips and performing the voltage boosting switching control using the generated control clock signal.

10 more elements

An integrated circuit device comprising:

a plurality of integrated circuit chips having an integrated circuit operated at a specified voltage;
and
an interposer,
wherein the interposer comprises;
a voltage boosting supply circuit that boosts a power-supply voltage supplied from a power supply to the specified voltage and supplies the boosting voltage to the integrated circuit of the integrated circuit chips;
and
a chip control circuit that selects at least one of the plurality of integrated circuit chips and controls the integrated circuit so that the selecting integrated circuit chip is operated using the supplied voltage from the voltage boosting supply circuit,
the chip control circuit changes number of the selecting integrated circuit chips based on a specified control signal, and
the voltage boosting supply circuit comprises:
a boost converter having a inductor connected in series between an input terminal supplied with the power supply voltage and an output terminal supplying a voltage to the integrated circuit of the integrated circuit chip, a rectifying element connected in series between the inductor and the output terminal and rectifying current to a direction from the input terminal to the output terminal, and a switching element connected between the inductor and the rectifying element in parallel with the output terminal as viewed from the inductor;
a number-of-chip detecting circuit detecting number of operating integrated circuit chips that is number of the integrated circuit chips operating at a voltage supplied from the voltage boosting supply circuit based on a voltage of the output terminal of the boost converter after rising when an output terminal voltage that is the voltage of the output terminal of the boost converter rises during being performed a voltage boosting switching control controlling the switching element so that the output terminal voltage reaches the
a switching control circuit generating a control clock signal having turn-on time and turn-off time adjusted based on the detected number of operating integrated circuit chips and performing the voltage boosting switching control using the generated control clock signal.

9 more elements

Dependencies are inferred from the claim text.