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Voltage stabilizing circuit for preventing overshoot and reference circuit

The technology of a voltage stabilizing circuit and a reference circuit is applied to emergency protection circuit devices, circuit devices, emergency protection circuit devices and other directions for limiting overcurrent/overvoltage, and can solve the problem that the voltage stabilizing circuit does not have overshoot protection, etc. Achieve the effect of suppressing overshoot, fast charging, and preventing overshoot

Active Publication Date: 2010-11-10
RENESAS SEMICON DESIGN BEIJING CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0008] The embodiment of the present invention provides a voltage stabilizing circuit and a reference circuit for preventing overshoot, which are used to solve the problem that the voltage stabilizing circuit in the prior art does not have overshoot protection, and can also solve the problem of fast charging and preventing overshoot in the existing reference circuit The problem

Method used

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  • Voltage stabilizing circuit for preventing overshoot and reference circuit
  • Voltage stabilizing circuit for preventing overshoot and reference circuit
  • Voltage stabilizing circuit for preventing overshoot and reference circuit

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Embodiment Construction

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0049] Embodiments of the present invention provide a voltage stabilizing circuit and a reference circuit for preventing overshoot. The present invention will be described in detail below in conjunction with the accompanying drawings.

[0050] Such as figure 2 Shown is the structural diagram of the first embodiment of a voltage stabilizing circuit for preventing overshoot according to the present invention.

[0051] It includes a single-stage or multi-stage diff...

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Abstract

The invention relates to the circuit protection field, which provides a voltage stabilizing circuit preventing overshoot and a reference circuit for solving the overshoot problem of a voltage stabilizing circuit in the prior art. The voltage stabilizing circuit preventing overshoot comprises a differential amplifier, an output stage, a control signal unit and a switch circuit. When the voltage stabilizing circuit is just powered on, the switch circuit controls the output stage according to control signals in order to restrain the output end overshoot of the output stage.

Description

technical field [0001] The invention relates to the field of circuit protection, in particular to a voltage stabilizing circuit and a reference circuit for preventing overshoot. Background technique [0002] In the prior art, the voltage stabilizing circuit does not have overshoot protection, and the output voltage of the stabilizing circuit is too high, which may cause damage or malfunction of the subsequent circuit. [0003] Usually, the reference circuit includes a bandgap reference circuit and a voltage regulator circuit. The reference circuit also has the above-mentioned problems, and the low-power reference circuit also has the disadvantage of slow startup, which will inevitably restrict the power-on speed of the entire system. [0004] The reference circuit provides the reference voltage for the whole analog system, which is a very critical module. Such as figure 1 Shown is a schematic diagram of a reference circuit in the prior art, and the reference circuit usuall...

Claims

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Application Information

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IPC IPC(8): G05F1/56H03K17/687H02H9/02
Inventor 王晶荣磊
Owner RENESAS SEMICON DESIGN BEIJING CO LTD
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