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
CN110163015AActive Publication Date: 2019-08-23STMICROELECTRONICS SRL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
STMICROELECTRONICS SRL
Publication Date
2019-08-23

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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.
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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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