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Voltage trimming circuit and integrated circuit including the voltage trimming circuit

A technology for fine-tuning circuits and voltages, applied in multiple input and output pulse circuits, adjusting electrical variables, control/regulation systems, etc., can solve the problem of inability to accurately set reference voltage or target voltage, IC test time and reduce IC output And other issues

Pending Publication Date: 2018-12-07
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

An increase in IC test time may reduce IC yield
[0005] Also, in the case where the test equipment adjusts the internal voltage of the integrated circuit, the internal voltage may not be accurately set to the reference voltage or the target voltage due to the unique resolution of the test equipment

Method used

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  • Voltage trimming circuit and integrated circuit including the voltage trimming circuit
  • Voltage trimming circuit and integrated circuit including the voltage trimming circuit
  • Voltage trimming circuit and integrated circuit including the voltage trimming circuit

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Embodiment Construction

[0023] Embodiments of the inventive concept can be described in detail and clearly so that those of ordinary skill in the art can easily realize the inventive concept.

[0024] figure 1 is a block diagram illustrating a voltage trimming circuit according to an embodiment of the inventive concept. refer to figure 1 , the voltage trimming circuit 100 may include a comparator 110 , a code generator 120 , a nonvolatile storage device 130 , a switch circuit 140 and a voltage generator 150 . The voltage trimming circuit 100 can set the feedback voltage VFB as the reference voltage VREF. The elements of the voltage trimming circuit 100 will be described in detail.

[0025] The comparator 110 may compare the reference voltage VREF with the feedback voltage VFB and may generate a comparison result COMP. The reference voltage VREF may be a voltage supplied from the outside of the voltage trimming circuit 100 , and the feedback voltage VFB may be a voltage generated by the voltage ge...

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PUM

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Abstract

A voltage trimming circuit includes a comparator, a code generator, nonvolatile storage device, a switch circuit, and a voltage generator. The comparator compares a reference voltage with a feedback voltage. The code generator generates a plurality of trimming codes for trimming the feedback voltage based on the comparison result of the comparator. If the feedback voltage is less than the reference voltage, the code generator adjusts up codes to increase the feedback voltage, from among the plurality of trimming codes and maintains down codes to decrease the feedback voltage, from among the plurality of trimming codes at an initial value. If the feedback voltage is greater than the reference voltage, the code generator adjusts the down codes and maintains the up codes at an initial value.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to Korean Patent Application No. 10-2017-0062871 filed in the Korean Intellectual Property Office on May 22, 2017, the contents of which are incorporated herein by reference in their entirety. technical field [0003] Embodiments of the inventive concept described herein relate to a voltage trimming circuit, an operating method thereof, and an integrated circuit including a voltage trimming circuit, and more particularly, to a voltage trimming circuit including an antifuse, an operating method thereof, and an integrated circuit including a voltage trimming circuit . Background technique [0004] An integrated circuit can generate an internal voltage by using a driving voltage (eg, VDD). The internal voltage may not be set accurately to the desired voltage level and may need to be trimmed or its level adjusted. In order to fine-tune the internal voltage, the test equipment (outside the...

Claims

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Application Information

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IPC IPC(8): G05F1/46
CPCG05F1/46G05F1/575G11C5/147G11C29/021G11C29/028H03K5/08H03K5/24
Inventor 权慧贞徐宁焄
Owner SAMSUNG ELECTRONICS CO LTD