Zero-current-loss single-tube grid-control circuit with pre-voltage-stabilization function

Abstract

The invention discloses a pre-voltage-stabilizing zero-current-loss single-tube grid-control circuit. The pre-voltage-stabilizing zero-current-loss single-tube grid-control circuit comprises a rear-end circuit and an MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) device electrically connected with the rear-end circuit, the threshold voltage of the MOSFET device is a zero limit value; and the gate voltage control of the MOSFET device is adopted to carry out pre-voltage stabilization so as to provide a pre-voltage-stabilization potential for the rear-end circuit. Pre-voltage stabilization can be achieved only through an MOSFET device with the threshold voltage being the zero limit value or a depletion type MOSFET device, positive gate voltage control and back gate voltage control are used for achieving pre-voltage stabilization, an extra current branch is not introduced into the pre-voltage-stabilization part, current consumed by the pre-voltage-stabilization part is inherent current loss of a system, and therefore the current consumption of the pre-voltage-stabilization part is reduced. Extra current loss is avoided, the PSRR characteristic of the reference voltage is greatly improved, and a good pre-voltage-stabilizing effect is achieved; the minimization of the circuit and the minimization of the chip area are realized by a single device; the method does not involve the stability problem, is simpler in design and wider in application range, and can be applied to the fields of high-voltage pre-voltage-stabilizing integrated circuit design and the like.

Description

technical field [0001] The invention belongs to the technical field of analog integrated circuits, and in particular relates to a pre-regulated zero current loss single-tube gate control circuit. Background technique [0002] With the current development of integrated circuits, higher requirements are put forward for the performance of products in all aspects, especially in the field of integrated circuits such as reference voltage, reference current, and high-voltage pre-regulation that pre-regulate the power supply voltage. Among them, chips in the reference voltage and reference current fields need pre-regulation to improve the PSRR characteristics and linear adjustment rate characteristics of the output reference, and high-voltage application chips need pre-regulation to protect the internal circuit from high voltage breakdown. At present, the overall development direction of pre-regulation technology is low voltage, low power consumption, high efficiency, high precision...

AI Technical Summary

Problems solved by technology

However, the process inevitably involves loop stability design, which requires capacitance compensation, which not only increases the design difficulty, but also increases the additional chip area. Compared with the floating ground technology, the current branches consumed by these two technologies are much larger. more, more current loss

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