Static induction transistor

About: Static induction transistor is a research topic. Over the lifetime, 8155 publications have been published within this topic receiving 107058 citations. The topic is also known as: SIT.

Current-efficient low-drop-out voltage regulator with improved load regulation and frequency response

Abstract: A low drop-out (LDO) voltage regulator ( 10 ) and system ( 100 ) including the same are disclosed. An error amplifier ( 38 ) controls the gate voltage of a source follower transistor ( 24 ) in response to the difference between a feedback voltage (V FB ) from the output (V OUT ) and a reference voltage (V REF ). The source of the source follower transistor ( 24 ) is connected to the gates of an output transistor ( 12 ), which drives the output (V OUT ) from the input voltage (V IN ) in response to the source follower transistor ( 24 ). A current mirror transistor ( 14 ) has its gate also connected to the gate of the output transistor ( 12 ), and mirrors the output current at a much reduced ratio. The mirror current is conducted through network of transistors ( 18, 22 ), and controls the conduction of a first feedback transistor ( 28 ) and a second feedback transistor ( 35 ) which are each connected to the source of the source follower transistor ( 24 ) and in parallel with a weak current source ( 34 ). The response of the first feedback transistor ( 28 ) is slowed by a resistor ( 32 ) and capacitor ( 30 ), while the second feedback transistor ( 35 ) is not delayed. As such, the second feedback transistor ( 35 ) assists transient response, particularly in discharging the gate capacitance of the output transistor ( 12 ), while the first feedback transistor ( 28 ) partially cancels load regulation effects.

Pixel circuit, active matrix apparatus and display apparatus

Abstract: A pixel circuit having a function of compensating for characteristic variation of an electro-optical element and threshold voltage variation of a transistor is formed from a reduced number of component elements. An input signal is sampled from a signal line so as to be held in a holding capacitor. The threshold voltage of the drive transistor is imparted to the holding capacitor in order to cancel an influence of the threshold voltage.

High-voltage lateral transistor with a multi-layered extended drain structure

Abstract: A high-voltage transistor with a low specific on-state resistance and that supports high voltage in the off-state includes one or more source regions disposed adjacent to a multi-layered extended drain structure which comprises extended drift regions separated from field plate members by one or more dielectric layers. With the field plate members at the lowest circuit potential, the transistor supports high voltages applied to the drain in the off-state. The layered structure may be fabricated in a variety of orientations. A MOSFET structure may be incorporated into the device adjacent to the source region, or, alternatively, the MOSFET structure may be omitted to produce a high-voltage transistor structure having a stand-alone drift region.

Circuit for driving two power mosfets in a half-bridge configuration

Abstract: A driver circuit for driving top and bottom power transistors stacked between two supply terminals is provided. The driver circuit includes shoot-through reduction means for monitoring the gate-to-source voltages of the two power transistors so as to inhibit the turning-ON of each power transistor until the gate-to-source voltage of the other power transistor has fallen to a voltage level indicative of the other transistor being OFF. Additionally, the driver circuit which can utilize a bootstrap capacitor for providing enhanced voltages to drive the top power transistor, also includes a bootstrap capacitor recharge means to monitor the output voltage of the circuit so as to inhibit the turning-ON of the top power transistor until the bootstrap capacitor has had sufficient time to recharge.

Active-matrix display device and method of driving the same

Abstract: In an active-matrix display device and a method for driving the active-matrix display device, a fifth transistor is connected between a power line and a drain terminal of a first transistor so that a power-supply voltage, namely the fixed voltage required for the compensation of the threshold voltage, is supplied by the power line via a fifth transistor and not by a signal line Thus, a sufficient length of time for the threshold voltage compensation period can be maintained, and a second transistor of each pixel can accurately be compensated for threshold voltage irregularities