Taiwan Semiconductor Manufacturing Comp. Ltd.

Sungchieh Lin

Kuoyuan (Peter) Hsu

Bing Wang

Kuoyuan Hsu

The present disclosure describes a power supply switch that includes a voltage generator, a switch circuit, and a confirmation circuit. The voltage generator is configured to compare a first power supply voltage to a second power supply voltage and to output the first power supply voltage or the second power supply voltage as a bulk voltage (V). The switch circuit includes one or more transistors and is configured to (i) bias bulk terminals of the one or more transistors with the Vand (ii) output either the first power supply voltage or the second power supply voltage as a voltage output signal. The confirmation circuit is configured to output a confirmation signal that indicates whether the voltage output signal transitioned from the first power supply voltage to the second power supply voltage.

Switchable power supply

Various embodiments for configurable memory storage systems are disclosed. The configurable memory storages selectively choose an operational voltage signal from among multiple operational voltage signals to dynamically control various operational parameters. For example, the configurable memory storage systems selectively choose a maximum operational voltage signal from among the multiple operational voltage signals to maximize read/write speed. As another example, the configurable memory storage systems selectively choose a minimum operational voltage signal from among the multiple operational voltage signals to minimize power consumption. Moreover, the configurable memory storage systems selectively provide the maximum operational voltage signal to bulk (B) terminals of some of their transistors to prevent latch-up of these transistors. In some situations, the configurable memory storage systems can dynamically adjust the maximum operational voltage signal to compensate for fluctuations in the maximum operational voltage signal.

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Zhubei, Taiwan

Sungchieh Lin