3 results about "Current consumption" patented technology

A bit line resetting signal is supplied to the gate of an nMOS transistor (or a precharge circuit) which connects a bit line with a precharge voltage line. The high-level voltage of the bit line resetting signal is retained at a first voltage during the precharge operation after a refresh operation, and is retained at a second voltage higher than the first voltage during the precharge operation after an access operation. In the precharge operation after the refresh operation, therefore, the second voltage is not used so that the current consumption of the generating circuit of the second voltage is reduced. Thus, it is possible to reduce the current consumption (or the standby current) during the standby period for which the internal refresh requests continuously occur.

A display apparatus includes a display and a controller. The controller is configured to receive, from the display, an arithmetic value for electric current consumption of the display; estimate the electric current consumption of the display based on the arithmetic value that was received; and when the estimated electric current consumption of the display is equal to or greater than a predetermined electric current threshold, decrease an electric current to be supplied to the display. The arithmetic value is calculated based on pixel value information.

The invention discloses a self-adaptive turn-off time generation circuit and a buck converter, the self-adaptive turn-off time generation circuit comprises a current generation circuit unit, the current generation circuit unit comprises a first current generation circuit and a second current generation circuit, the first current generation circuit is used for generating a first current IC of a proportional input power supply, and the second current generation circuit is used for generating a second current IC of a proportional input power supply; the second current generating circuit is used for generating a second current IB of a proportional input-output power supply difference; and the self-adaptive turn-off time generating unit is used for generating self-adaptive turn-off time according to the first current IC and the second current IB. According to the invention, the self-adaptive turn-off time can be generated, and the time is only related to the size (RC) of a passive device in the circuit and the output/input power supply voltage ratio (VO/VI); the first current generation circuit avoids the use of an operational amplifier, so that the design difficulty of the circuit is reduced, and the current consumption is reduced; the second current generating circuit perfectly solves the problem that the output minimum voltage is limited, so that the output voltage can work from 0V to the input voltage all the time.