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    • 34. 发明申请
    • DYNAMIC LEAKAGE CONTROL USING SELECTIVE BACK-BIASING
    • 使用选择性反向偏移的动态泄漏控制
    • WO2008101036A1
    • 2008-08-21
    • PCT/US2008/053890
    • 2008-02-13
    • ADVANCED MICRO DEVICES, INC.SHIMIZU, DanielWANG, DavidCHEN, Qi
    • SHIMIZU, DanielWANG, DavidCHEN, Qi
    • H03K19/00
    • H03K19/0013H03K2217/0018
    • Embodiments of a dynamic leakage control circuit for use with graphics processor circuitry are described. The dynamic leakage control circuit selectively enables back biasing of the transistors comprising the graphics processor circuits during particular modes of operation. The back biasing levels are controlled by two separate power rails. A first power rail is coupled to an existing power supply and the second power rail is coupled to a separate adjustable voltage regulator A separate voltage regulator may also be provided for the first power rail. A hardware-based state machine or software process is programmed to detect the occurrence of one or more modes of operation and adjust the voltage regulators for the first and second power rails to either enable or disable the back biasing state of the circuit, or alter the threshold voltage of the circuit within a specified voltage range.
    • 描述了用于图形处理器电路的动态泄漏控制电路的实施例。 动态泄漏控制电路在特定的操作模式期间选择性地实现包括图形处理器电路的晶体管的反向偏置。 后偏置电平由两个单独的电源轨控制。 第一电力轨耦合到现有电源,第二电力轨耦合到单独的可调电压调节器。也可以为第一电力轨提供单独的电压调节器。 对基于硬件的状态机或软件过程进行编程以检测一个或多个操作模式的发生,并且调整用于第一和第二电力轨的电​​压调节器以使得或禁用电路的反向偏置状态,或者改变 电路的阈值电压在规定的电压范围内。