Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Switching regulator

A technology of switching voltage regulator and reference voltage, which is applied in the direction of instruments, control/regulation systems, and regulation of electrical variables. Reduced loss and improved boost efficiency

Inactive Publication Date: 2012-12-12
SEIKO INSTR INC
View PDF11 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, the cycle of energy supply becomes longer, so the discharge of the output voltage Vout increases during this period, and there is a problem that the pulsating voltage of the output voltage Vout increases.

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

[0025] figure 1 It is a circuit diagram of the switching regulator of 1st Embodiment.

[0026] The switching regulator of the first embodiment includes: output voltage dividing resistors 11 and 12; a reference voltage circuit 10; an error amplifier 13; an oscillation circuit 15; a buffer circuit 16; a switching element 21; a coil 22; a diode 23; and an output capacitor 24 ; constant current source 123 ; and transistors 120 , 121 , 122 . The constant current source 123 flows out a constant current Ic. The oscillation frequency of the oscillation circuit 15 is controlled by the supplied bias current Iosc.

[0027] The output voltage dividing resistors 11 and 12 divide the output voltage Vout to output a divided voltage Vfb. The error amplifier 13 compares the reference voltage Vref output from the reference voltage circuit 10 with the divided voltage Vfb, amplifies the difference voltage, and outputs it as a voltage Verr. Since the divided voltage Vfb is input to the non-in...

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

In order to provide a switching regulator having high efficiency even under light load, the switching regulator is configured so that ON / OFF of a switching element is controlled by an output signal of an oscillation circuit having an oscillation frequency controlled by an output signal from an error amplifier. Thereby, the oscillation frequency can be suppressed under light load, thus reducing a switching loss.

Description

technical field [0001] The present invention relates to a switching regulator capable of improving light load efficiency. Background technique [0002] A switching regulator is used as a voltage supply source for circuits of various electronic devices. The function of the switching regulator is to output a constant voltage at the output terminal with high conversion efficiency regardless of the voltage fluctuation of the input terminal. Furthermore, it is important to maintain a high conversion efficiency even when an electronic device serving as a load enters a low power consumption mode such as a standby state, and the current supplied from the output terminal to the load decreases. [0003] Figure 4 A circuit diagram of a conventional step-up switching regulator is shown. [0004] A coil 22 is connected to the input power source 20 . A rectification element 23 is connected between the coil 22 and the output capacitor 24 . The load 25 is connected in parallel with 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 Applications(China)
IPC IPC(8): H02M3/156
CPCY02B70/16H02M2001/0035H02M3/156H02M1/0035Y02B70/10H02M1/14H02M3/155
Inventor 出口充康吉田宪治
Owner SEIKO INSTR INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com