Voltage-adjusting device and related voltage-adjusting method
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G05F-003/24
H02J-013/00
출원번호
US-0190179
(2016-06-23)
등록번호
US-9740230
(2017-08-22)
발명자
/ 주소
Yang, Chia-Chi
출원인 / 주소
SEMICONDUCTOR MANUFACTURING INTERNATIONAL (SHANGHAI) CORPORATION
대리인 / 주소
Anova Law Group, PLLC
인용정보
피인용 횟수 :
0인용 특허 :
4
초록▼
A voltage-adjusting device is provided for adjusting voltages of one or more power domains in a chip. The device includes a distributing system, and a voltage-adjusting system. The distributing system obtains task information for the one or more power domains, obtains a forecasted voltage and a dete
A voltage-adjusting device is provided for adjusting voltages of one or more power domains in a chip. The device includes a distributing system, and a voltage-adjusting system. The distributing system obtains task information for the one or more power domains, obtains a forecasted voltage and a detected voltage for a power domain, and obtains a control system for the power domain for controlling a voltage applied on the power domain based on the forecasted voltage and the detected voltage. The forecasted voltage is a voltage required for the power domain to execute a task. Further, the voltage-adjusting system is connected to the distributing system and the one or more power domains, adjusts the voltage applied on the power domain based on the control signal such that the detected voltage reaches the forecasted voltage when the power domain executes a task.
대표청구항▼
1. A voltage-adjusting device for adjusting voltages of one or more power domains in a chip, comprising: a distributing system including a detecting module, a forecasting module, and a distributing module, anda voltage-adjusting system, wherein:the distributing system obtains a task information for
1. A voltage-adjusting device for adjusting voltages of one or more power domains in a chip, comprising: a distributing system including a detecting module, a forecasting module, and a distributing module, anda voltage-adjusting system, wherein:the distributing system obtains a task information for the one or more power domains, the forecasting module obtains a forecasted voltage for the power domain based on the task information, the detecting module obtains a detected voltage for a power domain, and the distributing module obtains a control signal for the power domain for controlling a voltage applied on the power domain based on the forecasted voltage and the detected voltage, the forecasted voltage being a voltage required for the power domain to execute a task; andthe voltage-adjusting system, connected to the distributing system and the one or more power domains, adjusts the voltage applied on the power domain based on the control signal such that the detected voltage reaches the forecasted voltage when the power domain executes a task. 2. The voltage-adjusting device according to claim 1, wherein the detecting module detects an operational voltage of the power domain and generates the detected voltage based on the operational voltage. 3. The voltage-adjusting device according to claim 2, wherein: the detecting module comprises a reference circuit and an analog-to-digital converter (ADC);the reference circuit generates a reference voltage;the ADC, connected to the reference circuit and the power domain, compares the operational voltage of the power domain with the reference voltage to generate the detected voltage of the power domain, the detected voltage being a digital signal. 4. The voltage-adjusting device according to claim 3, wherein the reference circuit is a bandgap voltage reference circuit. 5. The voltage-adjusting device according to claim 3, wherein the ADC is a successive approximation register (SAR) ADC. 6. The voltage-adjusting device according to claim 1, further comprising a processing module for controlling operations of the voltage-adjusting device. 7. The voltage-adjusting device according to claim 6, wherein the forecasting module is connected to the processing module to obtain task information of the one or more power domains and generate the forecasted voltage of the power domain based on the task information. 8. The voltage-adjusting device according to claim 1, wherein: the voltage-adjusting system comprises one or more voltage-adjusting modules; andthe one or more voltage-adjusting modules form one-to-one connection with the one or more power domains and adjust voltages applied on the one or more power domains based on the control signals, such that the detected voltage applied on a power domain reaches the forecasted voltage when the power domain executes a task. 9. The voltage-adjusting device according to claim 8, wherein a voltage-adjusting module of the one or more voltage-adjusting modules comprises one or more power gating cells (PGC), each power gating cell including one or more transistors connected to a corresponding power domain; andbased on the control signal, the one or more transistors in the voltage-adjusting module are turned on or off to adjust the voltage applied on the corresponding power domain. 10. The voltage-adjusting device according to claim 9, wherein smallest dimensions of a transistor of the one or more transistors are determined based on a smallest power supply current provided to the corresponding power domain. 11. The voltage-adjusting device according to claim 10, wherein: a base PGC is one of the one or more PGCs having only one transistor with the smallest dimensions; anddimensions of each of the PGC being a multiple of the dimensions of the base PGC. 12. The voltage-adjusting device according to claim 9, further comprising decoupling capacitors connected to corresponding power domains, wherein: when the PGCs are turned on and the detected voltage of a power domain is different from the forecasted voltage, the decoupling capacitors compensate the voltages applied on the power domain so that the detected voltage reaches the forecasted voltage when the power domain executes a task. 13. The voltage-adjusting device according to claim 9, further comprising a storage module configured to store ON resistances of transistors of different dimensions under different source-to-drain voltages, detected capacitances of the one or more power domains, a system frequency of the chip, and operational configurations of the transistors in the voltage-adjusting module. 14. The voltage-adjusting device according to claim 13, wherein the operation configuration of a transistor of the one or more transistors includes on and off states of the transistor. 15. The voltage-adjusting device according to claim 14, the distributing module comprising a detecting-processing unit, a forecasting-processing unit, a recognition unit, and a signal-processing unit, wherein: the forecasting-processing unit, connected to the storage module, obtains the operational configuration of the voltage-adjusting module based on the forecasted voltage of a corresponding power domain, and obtains a forecasted current of the corresponding power domain based on the forecasted voltage and the ON resistances of the transistors in the voltage-adjusting module;the detecting-processing unit, connected to the storage module, obtains a detected current of the corresponding power domain based on the detected capacitance of the power domain, the forecasted voltage of the power domain, the detected voltage of the power domain, the system frequency, and the ON resistance and the operational configuration of the corresponding voltage-adjusting module;the recognition unit determines if the detected voltage of the corresponding power domain equals the forecasted voltage of the corresponding power domain based on the forecasted current and the detected current of the corresponding power domain; andthe signal-processing unit, connected to the recognition unit and the forecasting-processing unit, when the recognition unit determines the detected voltage of the corresponding power domain is different from the forecasted voltage of the corresponding power domain, obtains and outputs the control signal for adjusting the voltage applied on the corresponding power domain based on the forecasted current. 16. The voltage-adjusting device according to claim 15, wherein: the distributing system obtains the task information and forecasted voltages of the one or more power domains at a predetermined frequency;the distributing system obtains the detected voltages of the one or more power domains at the predetermined frequency;the distributing system obtains the control signals for the one or more power domains based on the forecasted voltages and the detected voltages of the one or more power domains at the predetermined frequency;the voltage-adjusting system adjusts the voltages applied on the one or more power domains based on the control signals at the predetermined frequency such that the detected voltages of the one or more power domains reach the forecasted voltages of the one or more power domains when the power domains execute tasks. 17. A voltage-adjusting method for adjusting voltages applied on a plurality of power domains in a chip, comprising: obtaining a detected voltage of a power domain at a predetermined frequency;obtaining task information of the plurality power domains at the predetermined frequency to obtain a forecasted voltage of the power domain, the forecasted voltage being a voltage required for the power domain to execute a task;obtaining a control signal for the power domain at the predetermined frequency based on the detected voltage and the forecasted voltage; andadjusting the voltage applied on the power domain based on the control signal such that the detected voltage reaches the forecasted voltage when the power domain executes a task. 18. The voltage-adjusting method according to claim 17, further comprising additional compensation to the voltage applied on the power domain such that the detected voltage reaches the forecasted voltage when the power domain executes a task. 19. A voltage-adjusting device for adjusting voltages of one or more power domains in a chip, comprising: a distributing system including a detecting module, a forecasting module, and a distributing module, anda voltage-adjusting system connected to the distributing system, wherein:the distributing system obtains a task information for the one or more power domains at a predetermined frequency, the forecasting module obtains a forecasted voltage for the power domain based on the task information, the detecting module obtains a detected voltage for a power domain at a predetermined frequency, and the distributing module obtains a control signal for the power domain at a predetermined frequency for controlling a voltage applied on the power domain based on the forecasted voltage and the detected voltage, the forecasted voltage being a voltage required for the power domain to execute a task. 20. The voltage-adjusting device according to claim 19, wherein the voltage-adjusting system is connected to the one or more power domains, and adjusts the voltage applied on the power domain based on the control signal such that the detected voltage reaches the forecasted voltage when the power domain executes a task.
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