Replica biased voltage regulator

A technology of voltage regulator and copying voltage, which is applied in the direction of control/regulation system, instrument, and regulation of electrical variables, etc. It can solve the problems of periodic occurrence, impractical load adjustment mechanism, and increased operating current consumption.

Inactive Publication Date: 2007-01-17
CYPRESS SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The traditional configuration described above has some disadvantages: First, active load regulation (for example: switching in the load device, or turning on the current source) is not a proportional response (proportional response) or continuous in time, which means that when the load current At fairly low or high, the regulation will only happen periodically, rather than load regulation all the time; due to the use of a voltage comparator (Comp), the regulation provided can be assumed to be a kind of "winner takes all" (winner takes all)" adjustment, which is the opposite of the proportionality between the load current and the compensation curr

Method used

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Embodiment Construction

[0030] Embodiments of the present invention are described below with reference to the accompanying drawings, which illustrate a replica bias voltage regulator that can provide both continuous and proportional load regulation; The variant provides a semi-real-time response, which is superior to the previous conventional example.

[0031] figure 1 A replica bias voltage regulator, generally designated 100, of a first embodiment of the present invention is illustrated. The voltage regulator 100 may include an amplifier 102, a supply section 104, a current transmitter 106, a replica load 108, an additional load supply source 110, and a load 112; a replica voltage (Vrep) may be generated at node Vnet5 , and an output voltage (Vload) can be generated at the node Vnet6.

[0032] Amplifier 102 may be an operational amplifier, and its function in a negative feedback loop is described below. A non-inverting input of amplifier 102 may receive a reference voltage (Vref), and its invert...

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Abstract

The invention discloses a replica biased voltage regulator circuit (100) that provides high frequency response via local positive feedback and low frequency response via a negative feedback loop. A voltage regulator circuit (100) can include current conveyor (106) that essentially forces an output voltage (Vload) to follow a replica voltage (Vrep). An operational amplifier (102) can provide negative feedback by controlling current supplied to the current conveyor (104) based on a comparison between a reference voltage (Vref) and the replica voltage (Vrep).

Description

technical field [0001] The present invention relates generally to a voltage regulator circuit, and more particularly to a replica bias voltage regulator circuit. Background technique [0002] In integrated circuit devices, voltage regulator circuits are used for a variety of purposes; one particular application is as one of the sections within an integrated circuit device to regulate the internal power supply voltage. More specifically, a voltage regulator may supply a power supply voltage to an array of memory cells in a memory device, two possible examples of which are, for example, dynamic random access memories (DRAMs) and static random access memories (SRAMs). [0003] A replica bias voltage regulator is one of many types of voltage regulators. Generally speaking, in a replica bias voltage regulator, the voltage established in a portion of the circuit (eg, a leg) is replicated, which is typically replicated by a larger device, and presents a load (output ) voltage, t...

Claims

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Application Information

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IPC IPC(8): G05F1/40
Inventor 爱阿里安·格瑞迪那鲁
Owner CYPRESS SEMICON CORP
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