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Reference source and integrated circuit thereof

A reference source and collector technology, applied in the field of reference sources, can solve the problems of complex circuit structure and difficult constant bias voltage, and achieve the effect of simple circuit structure, wide power supply voltage range, and low current consumption

Pending Publication Date: 2019-01-04
SHENZHEN WEIYIDE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing bipolar reference source has a simple manufacturing process, high voltage resistance, and low power consumption, but it is not easy to realize two constant bias voltages of the bandgap voltage source
Most of the existing reference sources are realized by the operational amplifier feedback loop, but this method makes the circuit structure complicated

Method used

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  • Reference source and integrated circuit thereof
  • Reference source and integrated circuit thereof

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Embodiment Construction

[0025] Herein, the detailed content and technical description of the present invention will be further described with a preferred embodiment, but it should not be construed as a limitation to the implementation of the present invention.

[0026] See figure 1 , figure 1 It is a structural schematic diagram of an embodiment of the reference source of the present invention. like figure 1 As shown, the reference source 1 includes: a start-up circuit 11, a mirror current source 12, a bias circuit 13 and a bandgap voltage source 14; the start-up circuit 11 receives the power output by the power supply Vcc to provide a start-up bias current; The bias current provides two constant bias currents; the bias loop 13 provides two constant bias voltages according to the two constant bias currents; the bandgap voltage source 14 outputs one according to the two constant bias currents and the two constant bias voltages Reference output voltage Vref. Wherein, it is worth noting that the cur...

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Abstract

The invention discloses a reference source and an integrated circuit thereof. The reference source comprises a starting loop, a mirror current source, a bias loop and a band-gap voltage source; the starting loop receives power output by a power supply and provides a starting bias current; the mirror current source provides two constant bias currents according to the starting bias current; the biasloop comprises a plurality of transistors, and the plurality of the transistors provide two constant bias voltages according to the two constant bias currents; and the band-gap voltage source outputsa reference output voltage according to the two constant bias currents and the two constant bias voltages.

Description

technical field [0001] The invention relates to a reference source, in particular to a bipolar reference source with wide voltage and low power consumption. Background technique [0002] Reference sources are widely used in power supply circuits. Divided from the device type: bipolar, MOS and bipolar and MOS mixed type; from the power supply voltage: low voltage operation, high voltage operation and wide voltage operation; from power consumption: low power consumption and General power consumption. The existing bipolar reference source has a simple manufacturing process, high voltage resistance, and low power consumption, but it is not easy to realize two constant bias voltages of the bandgap voltage source. Most of the existing reference sources are realized by the operational amplifier feedback loop, but this method makes the circuit structure complicated. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F3/26
CPCG05F3/265
Inventor 张云
Owner SHENZHEN WEIYIDE TECH CO LTD
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