High-voltage NMOS switch
AssigneeScenix Semiconduction, Inc.
InventorsKwo-Jen Liu, Chuck Cheng-Wing Cheng
Life of this patent
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Abstract
A high voltage NMOS switch is adjustable in order to optimize the switch for proper operation with different circuit configurations. A high voltage booster, included within the high voltage NMOS switch, enables the switch to reclaim the previously unused second half-cycle of a power source waveform signal, which thereby increases the speed of the NMOS switch by a factor of two. In addition, the high voltage NMOS switch provides added ramp rate flexibility by enabling a user to optimize the ramp rate of the high voltage NMOS switch for different circuit configurations.
Claims14
A high voltage switch system, electrically coupled to a power source transmitting a first signal and a second signal, the system comprising:
- a high voltage pump, electrically coupled to the power source, adapted to receive the first signal from the power source and to transmit a pump signal;
- a high voltage booster, electrically coupled to the power source and the high voltage pump, receiving the second signal from the power source, to receive the pump signal from the high voltage pump and to transmit a booster signal when said booster signal has a voltage level higher than the pump signal;
- and
- a switch, electrically coupled to the high voltage booster, responding to receipt of an input signal having a first logic state by receiving the booster signal and transmitting an ouput signal with a high voltage level and adapted to respond to receipt of the input signal having a second logic state by transmitting the output signal with a low voltage level.
Dependencies are inferred from the claim text.