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Multiplier circuit, corresponding device and method

A converter circuit, circuit technology, applied in multiplication/division calculation operations, logic circuits with logic functions, multiple input and output pulse circuits, etc., can solve temperature dependence and nonlinear errors, large silicon area occupation , complex calibration technology and other issues to achieve the effect of reducing the area occupied by silicon

Active Publication Date: 2019-08-23
STMICROELECTRONICS SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] This arrangement suffers from inherent disadvantages of analog circuits, such as, for example, errors due to gain inaccuracies, bias currents, offset effects, temperature dependencies, and non-linearities as may be associated with operational amplifier (op-amp) construction.
There are other disadvantages that may be related to complex calibration techniques and large silicon area footprint

Method used

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  • Multiplier circuit, corresponding device and method
  • Multiplier circuit, corresponding device and method
  • Multiplier circuit, corresponding device and method

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Embodiment Construction

[0036] In the ensuing description, one or more specific details are set forth in order to provide an in-depth understanding of examples of embodiments of the specification. Embodiments may be obtained without one or more of the specific details, or with other methods, components, materials, etc. In other instances, known structures, materials, or operations are not detailed or described so that certain aspects of the embodiments would not be obscured.

[0037] References to "an embodiment" or "one embodiment" in the framework of this specification are intended to indicate that a particular configuration, structure or characteristic described with respect to the embodiment is included in at least one embodiment. Thus, phrases such as "in an embodiment" or "in one embodiment," which may be present at one or more points in this specification, do not necessarily denote one and the same embodiment. Furthermore, particular configurations, structures or characteristics may be combin...

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Abstract

A multiplier circuit, a corresponding device and a method are provided. A voltage-to-time converter circuit receives a first voltage signal and produces a PWM-modulated signal having a duty-cycle proportional to the first voltage signal. A current integrator circuit receives the PWM-modulated signal from the voltage-to-time converter circuit block and produces an output signal by integrating a current signal from a current source over integration time intervals having a duration which is a function of the duty-cycle of the PWM-modulated signal. The current signal is proportional to a second voltage signal. The output signal is accordingly proportional to a product of the first voltage signal and the current signal, which is furthermore proportional to a product of the first voltage signaland the second voltage signal.

Description

[0001] priority claim [0002] This application claims priority to Italian Patent Application No. 10201800000270 filed on February 15, 2018, the contents of which are incorporated herein by reference in their entirety to the fullest extent permitted by law. technical field [0003] This specification deals with multiplier circuits. [0004] One or more embodiments may be applied to various electronic devices, such as power circuit breakers, electronic fuses, power monitoring devices, data storage devices, etc., for both consumer and industrial applications. Background technique [0005] For example, voltage and current / voltage analog multipliers are currently used to monitor power consumption in several applications involving "smart" architectures for evaluating and managing power consumption. [0006] Such an application may involve calculating power by multiplying values ​​indicative of current and voltage supplied to the load. [0007] Conventional analog voltage multi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06G7/16
CPCG06G7/16G06G7/161H03K5/24H03K19/20G01R21/127
Inventor G·西库雷拉M·拉罗萨
Owner STMICROELECTRONICS SRL
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