Patent ID: 9136845
Filing Date: 2015-09-15
Classification: H03K

Abstract:
1. A level shifter comprising: a first branch and a second branch; a trigger of the first branch coupled to a low voltage input, an inverted high voltage output and a ground, the trigger of the first branch configured to change a voltage of the inverted high voltage output in response to the low voltage input; a latch of the first branch coupled to the inverted high voltage output and a high voltage output, the latch of the first branch configured to change a state of the high voltage output in response to the inverted high voltage output; a power gate of the first branch coupled to an inverted low voltage input, the latch of the first branch and a high voltage supply, the power gate of the first branch configured to enable a first current flowing from the high voltage supply through the latch of the first branch, in response to the inverted low voltage input; a trigger of the second branch coupled to the inverted low voltage input, the high voltage output and the ground, the trigger of the second branch configured to disable the first current from flowing to the ground in response to the inverted low voltage input; a latch of the second branch coupled to the high voltage output and the inverted high voltage output, the latch of the second branch configured to enable the change of the state of the high voltage output in response to the inverted high voltage output; and a power gate of the second branch coupled to the low voltage input, the latch of the second branch and the high voltage supply, the power gate of the second branch configured to reduce a value of a second current flowing from the high voltage supply through the latch of the second branch, in response to the low voltage input.