Method for extending word-line pulses

摘要

An integrated circuit includes a positive power supply node, a current tracking circuit, and a current mirroring circuit including a plurality of current paths coupled in parallel. The currents of the plurality of current paths mirror a current of the current tracking circuit. The current mirroring circuit is configured to turn off the plurality of current paths one-by-one in response to a reduction in a positive power supply voltage on the positive power supply node. The integrated circuit further includes a charging node receiving a summation current of the plurality of current paths, wherein a voltage on the charging node is configured to increase through a charging of the summation current.

主权项

1. An integrated circuit comprising:
a positive power supply node; a first plurality of PMOS transistors coupled in series and coupled to the positive power supply node, wherein gates of the plurality of PMOS transistors are coupled to a clock signal; a plurality of diodes coupled between the first plurality of PMOS transistors and an electrical ground; a charging node; a second plurality of PMOS transistors configured to form current mirrors with each other, wherein each of the second plurality of PMOS transistors is coupled between the positive power supply node and the charging node; a third plurality of PMOS transistors, each coupled between one of the second plurality of PMOS transistors and the charging node, wherein a gate of each of the third plurality of PMOS transistors is coupled to a drain of one of the first plurality of PMOS transistors; and a PMOS transistor forming current mirrors with the second plurality of PMOS transistors, wherein a drain of the PMOS transistor is coupled to the charging node.