Unlock instant, AI-driven research and patent intelligence for your innovation.

Low-power and compact voltage sensing circuit

A voltage sensing and circuit technology, applied in the field of low-power compact voltage sensing circuits, can solve problems such as increasing density and reducing power consumption

Active Publication Date: 2018-07-20
DIALOG SEMICONDUCTOR GMBH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To address the need for increased density and reduced power consumption in the art, a voltage sensing circuit is provided in which the comparator is also adapted to add Analog output signal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low-power and compact voltage sensing circuit
  • Low-power and compact voltage sensing circuit
  • Low-power and compact voltage sensing circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] To eliminate the need for a separate operational amplifier for adding a digital-to-analog converter output signal in a voltage sensing circuit, a comparator is provided that includes a comparator input stage comprising a differential pair of transistors. A source of a first of the differential pair transistors is coupled to a current source through a first resistor. Similarly, the source of the second of the differential pair transistors is coupled to the current source through a second resistor, wherein the first resistor and the second resistor are matched.

[0013] A main DAC, a tracking current digital-to-analog converter (iDAC), and a feedback voltage signal drive the comparator's input stage. A tracking current digital-to-analog converter (iDAC) generates an analog tracking current (Iidac) in response to an analog conversion of a tracking input word of the tracking current digital-to-analog converter (iDAC). Depending on the sign (sign) of the tracking input word...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A voltage sensing circuit for a switching power converter includes a comparator having a comparator input stage that processes a voltage from a main DAC and a current from a tracking DAC.

Description

technical field [0001] The present invention relates generally to voltage sensing circuits, and more particularly to a low power compact voltage sensing circuit for switching power converters. Background technique [0002] A switching power converter includes a controller for controlling the cycling of the power switches to regulate the delivery of power to the load. During a constant voltage controlled mode of operation, the controller controls the power switch to cycle in response to a feedback signal from the output voltage sent to the load. The control loop inside the controller can be an analog control loop or a digital control loop. In a digital control loop, the feedback signal is processed by a voltage sensing circuit that includes a comparator that drives a binary output signal. Since the feedback signal and the reference signal are compared every switching cycle, highly accurate and high-speed voltage sensing requires fast comparators and high-resolution digital...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H03M1/00
CPCH03M1/002H03M1/68H03M1/742G01R19/0084H03K5/2472G01R19/257
Inventor 沙璆A·麦琳因施琦锋彭明生
Owner DIALOG SEMICONDUCTOR GMBH