Integrated circuit device and electronic instrument

• US 7,977,974 B2
• Filed: 02/20/2008
• Issued: 07/12/2011
• Est. Priority Date: 02/20/2007
• Status: Active Grant

• Current Assignee: 138 East LCD Advancements Limited (Vector Capital Corporation)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Kamijo, Takahiro, Onishi, Kota
• Primary Examiner(s): Tan; Vibol
• Application Number:
  US12/071,370
• Publication Number:
  US 20080201586A1
• Time in Patent Office: 1,238 Days
• Field of Search: 326 38- 41, 326/47, 326/101, 323/282, 323/283, 307/104, 307/107
• US Class Current: 326/47
• CPC Class Codes: G06F 1/1632 External expansion units, e.g. docking stations
• CPC Class Codes: G06F 1/26 Power supply means, e.g. regulation thereof for memories G11C
• CPC Class Codes: H01L 2224/05554 being square
• CPC Class Codes: H01L 24/06 of a plurality of bonding areas
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/1301 Thyristor
• CPC Class Codes: H01L 2924/13091 Metal-Oxide-Semiconductor Field-Effect Transistor [MOSFET]
• CPC Class Codes: H01L 2924/14 Integrated circuits

Abstract

An integrated circuit device includes a digital power supply regulation circuit, an analog power supply regulation circuit, a control logic circuit, an analog circuit, and a power supply wiring region. A digital power supply line which supplies a digital power supply voltage and an analog power supply line which supplies an analog power supply voltage are provided in the power supply wiring region. The digital power supply regulation circuit, the analog circuit, and the analog power supply regulation circuit are disposed in a first direction with respect to the control logic circuit. The power supply wiring region is formed along a second direction in a region between the control logic circuit and the digital power supply regulation circuit, the analog circuit, and the analog power supply regulation circuit.

Claims

1. An integrated circuit device comprising:

a digital power supply regulation circuit that regulates a digital power supply voltage;

an analog power supply regulation circuit that regulates an analog power supply voltage;

a control logic circuit that includes logic cells and operates based on the digital power supply voltage that is regulated by and supplied from the digital power supply regulation circuit;

an analog circuit that includes at least a comparator or an operational amplifier and operates based on the analog power supply voltage that is regulated by and supplied from the analog power supply regulation circuit; and

a power supply wiring region, at least a digital power supply line that supplies the digital power supply voltage that is regulated by the digital power supply regulation circuit and an analog power supply line that supplies the analog power supply voltage that is regulated by the analog power supply regulation circuit being provided in the power supply wiring region,

the digital power supply regulation circuit, the analog circuit, and the analog power supply regulation circuit being disposed in a first direction with respect to the control logic circuit; and

the power supply wiring region being formed along a second direction in a region between the control logic circuit and the digital power supply regulation circuit, the analog circuit, and the analog power supply regulation circuit, the second direction being a direction perpendicular to the first direction.

2. The integrated circuit device as defined in claim 1,

the analog circuit being disposed in the second direction with respect to the digital power supply regulation circuit, and the analog power supply regulation circuit being disposed in the second direction with respect to the analog circuit.

3. The integrated circuit device as defined in claim 2,

a first power supply pad being disposed in a fourth direction with respect to the digital power supply regulation circuit, the fourth direction being a direction that is opposite to the second direction, a power supply voltage that is regulated by the digital power supply regulation circuit being input to the first power supply pad;

and

a second power supply pad being disposed in the second direction with respect to the analog power supply regulation circuit, a power supply voltage that is regulated by the analog power supply regulation circuit being input to the second power supply pad.

4. The integrated circuit device as defined in claim 2,

the integrated circuit device further including a reset circuit that generates a reset signal and outputs the reset signal to each circuit of the integrated circuit device,

the reset circuit being disposed between the digital power supply regulation circuit and the analog circuit.

5. The integrated circuit device as defined in claim 2,

the integrated circuit device further including a temperature detection circuit that operates based on the digital power supply voltage that is regulated by and supplied from the digital power supply regulation circuit and performs a temperature detection process,

the temperature detection circuit being disposed between the digital power supply regulation circuit and the analog circuit.

6. The integrated circuit device as defined in claim 5,

the temperature detection circuit including:

a reference measurement transistor that is provided in series with a reference resistor between an oscillation node that is a node at one end of a reference capacitor and a digital power supply;

a capacitor temperature measurement transistor that is provided in series with a capacitor temperature measurement thermistor between the oscillation node and the digital power supply;

an ambient temperature measurement transistor that is provided in series with an ambient temperature measurement thermistor between the oscillation node and the digital power supply;

a discharge transistor, a drain of the discharge transistor being connected to the oscillation node; and

a detection circuit that outputs a detection pulse when a voltage of the oscillation node has exceeded a given threshold voltage.

7. The integrated circuit device as defined in claim 1,

the integrated circuit device further including:

a first predriver that drives a first N-type power MOS transistor of a first external driver that includes the first N-type power MOS transistor and a first P-type power MOS transistor; and

a second predriver that drives the first P-type power MOS transistor of the first external driver,

the first predriver and the second predriver being disposed in a third direction with respect to the power supply wiring region, the third direction being a direction that is opposite to the first direction.

9. The integrated circuit device as defined in claim 7,

a low-potential-side power supply line and a high-potential-side power supply line of the first predriver and the second predriver being separated from a low-potential-side power supply line and a high-potential-side power supply line of other circuits of the integrated circuit device.

11. The integrated circuit device as defined in claim 7,

a first N-type transistor and a first P-type transistor that form the first predriver being disposed in an arrangement region of the first predriver;

a second N-type transistor and a second P-type transistor that form the second predriver being disposed in an arrangement region of the second predriver;

each of the first N-type transistor, the first P-type transistor, the second N-type transistor, and the second P-type transistor including a plurality of unit transistors that are connected in parallel; and

the integrated circuit device further including;

a first N-type gate control circuit that outputs a plurality of gate control signals that are respectively input to gates of the plurality of unit transistors of the first N-type transistor;

a first P-type gate control circuit that outputs a plurality of gate control signals that are respectively input to gates of the plurality of unit transistors of the first P-type transistor;

a second N-type gate control circuit that outputs a plurality of gate control signals that are respectively input to gates of the plurality of unit transistors of the second N-type transistor; and

a second P-type gate control circuit that outputs a plurality of gate control signals that are respectively input to gates of the plurality of unit transistors of the second P-type transistor.

14. The integrated circuit device as defined in claim 7,

the integrated circuit device further including:

a third predriver that drives a second N-type power MOS transistor of a second external driver that includes the second N-type power MOS transistor and a second P-type power MOS transistor; and

a fourth predriver that drives the second P-type power MOS transistor of the second external driver,

the first predriver and the second predriver being disposed along a first side of the integrated circuit device;

the third predriver and the fourth predriver being disposed along a second side of the integrated circuit device, the second side intersecting the first side; and

the analog circuit being disposed along a fourth side that is opposite to the second side.

18. An electronic instrument comprising the integrated circuit device as defined in claim 1.

8. An integrated circuit device comprising:

a control logic circuit that includes logic cells and operates based on a digital power supply voltage;

an analog circuit that includes at least a comparator or an operational amplifier and operates based on an analog power supply voltage;

a power supply wiring region, a power supply line being provided in the power supply wiring region;

a first predriver that drives a first N-type power MOS transistor of a first external driver, the first external driver including the first N-type power MOS transistor and a first P-type power MOS transistor;

a second predriver that drives the first P-type power MOS transistor of the first external driver,

the analog circuit being disposed in a first direction with respect to the control logic circuit;

the power supply wiring region being formed along a second direction in a region between the control logic circuit and the analog circuit, the second direction being a direction perpendicular to the first direction; and

the first predriver and the second predriver being disposed in a third direction with respect to the power supply wiring region, the third direction being a direction that is opposite to the first direction.

10. The integrated circuit device as defined in claim 8,

a low-potential-side power supply line and a high-potential-side power supply line of the first predriver and the second predriver being separated from a low-potential-side power supply line and a high-potential-side power supply line of other circuits of the integrated circuit device.

12. The integrated circuit device as defined in claim 8,

a first N-type transistor and a first P-type transistor that form the first predriver being disposed in an arrangement region of the first predriver;

a second N-type transistor and a second P-type transistor that form the second predriver being disposed in an arrangement region of the second predriver;

each of the first N-type transistor, the first P-type transistor, the second N-type transistor, and the second P-type transistor including a plurality of unit transistors that are connected in parallel; and

the integrated circuit device further including;

a first N-type gate control circuit that outputs a plurality of gate control signals that are respectively input to gates of the plurality of unit transistors of the first N-type transistor;

a first P-type gate control circuit that outputs a plurality of gate control signals that are respectively input to gates of the plurality of unit transistors of the first P-type transistor;

a second N-type gate control circuit that outputs a plurality of gate control signals that are respectively input to gates of the plurality of unit transistors of the second N-type transistor; and

a second P-type gate control circuit that outputs a plurality of gate control signals that are respectively input to gates of the plurality of unit transistors of the second P-type transistor.

13. The integrated circuit device as defined in claim 12,

the first N-type gate control circuit outputting gate control signals that turn ON the plurality of unit transistors of the first N-type transistor at different timings when the first N-type transistor turns ON, the first N-type gate control circuit outputting gate control signals that turn OFF the plurality of unit transistors of the first N-type transistor at the same timing when the first N-type transistor turns OFF;

the first P-type gate control circuit outputting gate control signals that turn ON the plurality of unit transistors of the first P-type transistor at different timings when the first P-type transistor turns ON, the first P-type gate control circuit outputting gate control signals that turn OFF the plurality of unit transistors of the first P-type transistor at the same timing when the first P-type transistor turns OFF;

the second N-type gate control circuit outputting gate control signals that turn ON the plurality of unit transistors of the second N-type transistor at different timings when the second N-type transistor turns ON, the second N-type gate control circuit outputting gate control signals that turn OFF the plurality of unit transistors of the second N-type transistor at the same timing when the second N-type transistor turns OFF; and

the second P-type gate control circuit outputting gate control signals that turn ON the plurality of unit transistors of the second P-type transistor at different timings when the second P-type transistor turns ON, the second P-type gate control circuit outputting gate control signals that turn OFF the plurality of unit transistors of the second P-type transistor at the same timing when the second P-type transistor turns OFF.

15. The integrated circuit device as defined in claim 8,

the integrated circuit device further including:

a third predriver that drives a second N-type power MOS transistor of a second external driver that includes the second N-type power MOS transistor and a second P-type power MOS transistor; and

a fourth predriver that drives the second P-type power MOS transistor of the second external driver,

the first predriver and the second predriver being disposed along a first side of the integrated circuit device;

the third predriver and the fourth predriver being disposed along a second side of the integrated circuit device, the second side intersecting the first side; and

the analog circuit being disposed along a fourth side that is opposite to the second side.

16. The integrated circuit device as defined in claim 15,

the control logic circuit controlling the first predriver, the second predriver, the third predriver, and the fourth predriver, and the control logic circuit being disposed in the second direction with respect to the first predriver and the second predriver and in the first direction with respect to the third predriver and the fourth predriver.

17. The integrated circuit device as defined in claim 15,

the integrated circuit device being provided in a power transmission device of a non-contact power transmission system, the non-contact power transmission system transmitting power from the power transmission device to a power reception device by electromagnetically coupling a primary coil and a secondary coil and supplying power to a load of the power reception device,

the first external driver being a first power transmission driver that drives one end of the primary coil;

and

the second external driver being a second power transmission driver that drives the other end of the primary coil.

19. An electronic instrument comprising the integrated circuit device as defined in claim 8.