Reference regulator circuit
A voltage regulator circuit and benchmark technology, applied in the direction of adjusting electrical variables, control/regulating systems, instruments, etc., can solve the problems of circuit manufacturing process, increase manufacturing cost, influence, etc., to save chip area and avoid device mismatch. Effect
Active Publication Date: 2017-08-11
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology
But this improvement still requires three capacitors to divide the
[0008] The use of MOS transistor body effect technology enables the threshold difference to be used as the source of the reference voltage to obtain a low output voltage, but this traditional structure makes the trade-off between power consumption and silicon area always exist, and the output voltage will be subject to more process errors. The effects of device mismatches caused by
The threshold difference of two different types of MOS devices can implement an extremely low-power reference voltage regulator, but these designs require a multi-threshold CMOS process, which increases manufacturing costs, and the absolute value of the output voltage depends on the manufacturing process of the circuit
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[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0025] It can be understood that the terms "first", "second" and the like used in the present invention can be used to describe various elements herein, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first client could be termed a second client, and, similarly, a second client could be termed a first client, without departing from the scope of the present invention. Both the first client and the second client are clients, but they are not the same client.
[0026] figure 1 What is shown is a circuit dia...
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A standard voltage stabilizing circuit comprises a bias current source circuit for providing corresponding bias currents in a first mode and a second mode based on predetermined time sequence control, an MOS transistor circuit connected to the bias current source circuit so as to receive the bias currents and providing first gate source voltage in the first mode and second gate source voltage in the second mode, and an amplifier for outputting the difference of the first gate source voltage and the second gate source voltage.
Description
[0001] 【Technical field】 [0002] The invention relates to a voltage stabilizing circuit. In particular, the present invention relates to a reference voltage regulator circuit utilizing switched capacitors. [0003] 【Background technique】 [0004] Since the MOS transistor operating in the sub-threshold region can make the supply voltage of the circuit lower than the threshold (V th ), therefore, in recent years, the sub-threshold integrated circuit design technology that consumes extremely low power consumption is receiving more and more attention, and has received more and more research and exploration. As a key component of this integrated circuit, the voltage reference plays a decisive role in the performance of the circuit. In general, this type of integrated circuit has two requirements for the reference voltage regulator: (1) low output (<V th ); (2) The circuit consumes extremely low power consumption. [0005] The usual way to achieve low output is to divide the ...
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IPC IPC(8): G05F1/56
Inventor 张浩李烨
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI