Driving controller and internal voltage generation circuit

• US 8,330,507 B2
• Filed: 12/28/2009
• Issued: 12/11/2012
• Est. Priority Date: 06/26/2009
• Status: Active Grant

• Current Assignee: Hynix Semiconductor Incorporated (SK Hynix Inc.)
• Original Assignee: Hynix Semiconductor Incorporated (SK Hynix Inc.)
• Inventors: Kim, Keun Kook
• Primary Examiner(s): Nguyen, Hai L
• Application Number:
  US12/647,685
• Publication Number:
  US 20100327839A1
• Time in Patent Office: 1,079 Days
• Field of Search: 327/142, 327/143, 327/198
• US Class Current: 327/143
• CPC Class Codes: G11C 5/147 Voltage reference generators, voltage or current regulators; Internally lowered supply levels; Compensation for voltage drops G11C5/141 takes precedence
• CPC Class Codes: H03K 17/22 Modifications for ensuring a predetermined initial state when the supply voltage has been applied bi-stable generators H03K3/12

Abstract

A driving controller for use in stabilizing transient voltages from power supplies is presented. The driving controller includes a first pulse generator, a second pulse generator, and a control signal generator. The first pulse generator is configured to generate a power-up pulse signal including a pulse activating at a time of terminating a power-up period. The second pulse generator is configured to generate a detection pulse signal including a pulse that is being active from a time when an internal voltage reaches a predetermined level. The control signal generator is configured to generate an operation control signal, which controls a driving controller activating the internal voltage, in response to the power-up pulse signal and the detection pulse signal.

Claims

1. A driving controller, comprising:

a first pulse generator configured to generate a power-up pulse signal which includes a pulse that is being active from an end of terminating a power-up period until a termination of a first delay;

a second pulse generator configured to generate a detection pulse signal which includes a pulse that is being active from a time when an internal voltage reaches a predetermined level until a termination of a second delay; and

a control signal generator configured to generate an operation control signal, which controls a driving controller which activates the internal voltage, in response to the power-up pulse signal and the detection pulse signal.

2. The driving controller according to claim 1, wherein the first pulse generator comprises:

a delay circuit configured to delay a power-up signal for the first delay; and

a logic circuit configured to generate the power-up pulse signal through a logical operation with the power-up signal and configured to generate an output signal of the delay circuit.

3. The driving controller according to claim 1, wherein the second pulse generator comprises:

a delay circuit configured to delay the detection pulse signal for time the second delay; and

a logic circuit configured to transmit the detection pulse signal through a logical operation with the detection signal and configured to output an output signal of the delay circuit.

4. The driving controller according to claim 1, wherein the control signal generator comprises:

a latch configured to latch the power-up pulse signal and the detection pulse signal; and

a logic circuit configured to generate the operation control signal through a logical operation with an active signal and an output signal of the latch.

5. The driving controller according to claim 4, wherein an output signal of the latch is activated when the power-up pulse signal is activated, and inactivated when the detection pulse signal is activated.

6. The driving controller according to claim 5, wherein the logic circuit generates the operation control signal that is activated when one of the active signal and the output signal of the latch is activated.

7. A driving controller, comprising:

a pulse generator configured to generate a detection pulse signal which includes a pulse that is active from a time when an internal voltage reaches a predetermined level until a termination of a predetermined delay; and

a control signal generator configured to generate an operation control signal, which controls a driving controller activating the internal voltage, in response to a power-up signal and the detection pulse signal.

8. The driving controller according to claim 7, the pulse generator comprises:

a delay circuit configured to delay a detection signal for time the predetermined delay; and

a logic circuit configured to transmit the detection pulse signal through a logical operation with the detection signal and configured to output an output signal of the delay circuit.

9. The driving controller according to claim 7, wherein the control signal generator comprises:

a latch configured to input and latch the power-up pulse signal and the detection pulse signal; and

a logic circuit configured to generate the operation control signal through a logical operation with an active signal and configured to output an output signal of the latch.

10. The driving controller according to claim 9, wherein the output signal of the latch is activated when the power-up pulse signal is activated, and the output signal of the latch is inactivated when the detection pulse signal is activated.

11. The driving controller according to claim 10, wherein the logic circuit is configured to generate the operation control signal that is activated when one of the active signal and the output signal of the latch is activated.

12. An internal voltage generation circuit, comprising:

a driving controller configured to generate an operation control signal that is being active in response to a power-up pulse signal and a detection pulse signal; and

a first driver configured to drive an internal voltage in response to the operation control signal, wherein the power-up pulse signal includes a pulse that is being active from an end of terminating a power-up period until a termination of a first delay, and the detection pulse signal includes a pulse that is being active from a time when an internal voltage reaches a predetermined level until a termination of a second delay.

13. The internal voltage generation circuit according to claim 12, further comprising a voltage detector configured to generate a detection signal when the internal voltage reaches the predetermined level.

14. The internal voltage generation circuit according to claim 13, wherein the driving controller comprises:

a first pulse generator configured to generate the power-up pulse signal in response to a power-up pulse signal;

a second pulse generator configured to generate the detection pulse signal in response to a power-up pulse signal; and

a control signal generator configured to generate the operation control signal, which controls the first driver activating the internal voltage, in response to the power-up pulse signal and the detection pulse signal.

15. The internal voltage generation circuit according to claim 14, wherein the first pulse generator comprises:

a delay circuit configured to generate the power-up pulse signal for the first delay; and

a logic circuit configured to generate the power-up pulse signal through a logical operation with the power-up signal and an output signal of the delay circuit.

16. The internal voltage generation circuit according to claim 14, wherein the second pulse generator comprises:

a delay circuit configured to delay the detection signal for the second delay; and

a logic circuit configured to the detection pulse signal through a logical operation with the detection signal and an output signal of the delay circuit.

17. The internal voltage generation circuit according to claim 14, wherein the control signal generator comprises:

a latch configured to latch the power-up pulse signal and the detection pulse signal; and

a logic circuit configured to generate the operation control signal through a logical operation with an active signal and an output signal of the latch.

18. The internal voltage generation circuit according to claim 17, wherein an output signal of the latch is activated when the power-up pulse signal is activated, and the output signal of the latch is inactivated when the detection pulse signal is activated.

19. The internal voltage generation circuit according to claim 18, wherein the logic circuit generates the operation control signal that is activated when one of the active signal and the output signal of the latch is activated.

20. An internal voltage generation circuit comprising:

a driving controller configured to generate an operation control signal that is being active in response to a power-up signal and a detection pulse signal

a first driver configured to drive an internal voltage in response to the operation control signal, wherein the power-up signal is being active from an end of terminating a power-up period, and the detection pulse signal includes a pulse that is being active from a time when an internal voltage reaches a predetermined level until a termination of a second delay.