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

switching regulator

A technology of switching regulators and switching elements, applied in instruments, control/regulating systems, regulating electrical variables, etc., and can solve problems such as output voltage fluctuations

Active Publication Date: 2015-11-25
CYPRESS SEMICON CORP
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0026] Therefore, when the forced PWM mode is input as an external control signal while the switching regulator 200 is in the pause state in the automatic switching mode, the output voltage fluctuates significantly

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
  • switching regulator
  • switching regulator
  • switching regulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] Next, examples for carrying out the present invention will be described.

[0045]

[0046] An example of the overall configuration of the switching regulator will be explained first. figure 1 is a diagram showing a configuration example of the switching regulator 100 . and Figure 11 Constituent elements that are the same as those of those elements are denoted by the same reference numerals.

[0047] The switching regulator 100 also includes a mode control circuit (MODE_CNT) 23 and an error amplifier correction current source 40 .

[0048] The mode control circuit 23 receives the input of the external control signal (MODE) and the output voltage of the second comparator (PFM_COMP) 20, and outputs the control signal (CNT) to the error amplifier correction current source 40, and outputs the mode signal (MODE1) to the reverse The current detection comparator 30 and the second comparator 20 .

[0049] The control signal (CNT) output by the mode control circuit 23 is,...

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 switching regulator: first switching element and second switching element; a logic unit which outputs to the load the output voltage converted from the input voltage to the constant voltage, by causing the first switching element and the second switching element to perform a switching operation; an error amplifier which outputs first signal indicating an error between the output voltage and the first reference voltage; first comparator which inputs the first signal and second signal indicating an output voltage that is proportional to load current flowing in the load, and outputs to the logic unit control signal causing the logic unit to perform the switching operation based on the first signal and the second signal; and a correction unit which is connected to an input side of the error amplifier, and corrects an input voltage of the error amplifier to reduce the input voltage to a certain value or lower.

Description

technical field [0001] The embodiments discussed herein relate to switching regulators. Background technique [0002] Power circuits are used in electronic devices such as mobile phones and digital cameras, where input power is converted to a given output power. Examples of widely used power supply circuits include, for example, switching regulators (or DC-DC converters), which possess high efficiency and can be reduced in size. The use of switching regulators in electronic equipment, for example, has the effect of reducing power consumption in the electronic equipment. [0003] Figure 12 is a diagram showing a configuration example of the switching regulator 200 . The switching regulator 200 is supplied with an input voltage through VIN, and outputs an output voltage to the load 50 through VOUT. By converting the input voltage VIN to a constant voltage with a given value, the switching regulator 200 can supply the output voltage VOUT so that no overvoltage occurs at the...

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 Patents(China)
IPC IPC(8): H02M3/156H02M3/157
CPCH02M3/1588H02M2001/0032Y02B70/1466Y02B70/16H02M1/0032Y02B70/10
Inventor 木村武士
Owner CYPRESS SEMICON CORP