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

Power supply boost drive circuit based on self-oscillation

A technology of self-excited oscillation and power boosting, which is applied in the direction of high-efficiency power electronic conversion, electrical components, and adjustment of electrical variables, etc., can solve the problems of large power supply and high cost, and achieve small circuit size, reduced peripheral components, and output The effect of voltage adjustment

Active Publication Date: 2022-06-03
成都复锦功率半导体技术发展有限公司
View PDF26 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problems of large volume and high cost of the power supply with controllable output voltage in the prior art, and provide a power boost drive circuit based on self-excited oscillation

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
  • Power supply boost drive circuit based on self-oscillation
  • Power supply boost drive circuit based on self-oscillation
  • Power supply boost drive circuit based on self-oscillation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

This embodiment provides a boost driving application, and its circuit schematic diagram is as follows figure 1 As shown, the circuit input voltage Vin is 28V, VCC is 10V, and the required output voltage VO is 27.75±0.25V. At this time, the circuit works as follows:

State 1: When Vin is powered and VCC is not powered, the oscillator does not work. Vin charges capacitor C6 and capacitor C8 through diode D1, resistor R5, diode D3, resistor R8 and transistor Q4. When the voltage of capacitor C6 reaches 26.6V, the capacitor The voltage on C8 reaches 26.3V, the charging reaches balance, the voltage on the capacitor C8 drives the MOS transistor Q1, and the output voltage VO is 22.6V.

[0025] State 2: When Vin and VCC supply power at the same time, the oscillator starts to work. If the oscillator output is high at the start of oscillation, the circuit working state is consistent with state 1, and the output voltage VO is 22.6V.

[0026] State 3: If the oscillator output is low at th...

Embodiment 2

This embodiment provides a secondary boost driving application, and its circuit schematic diagram is as follows figure 2 As shown, at this time, the circuit input voltage Vin is 28V, VCC is 5V, and the required output voltage VO is 27.75±0.25V. At this time, the circuit works as follows:

State 1: When Vin is powered and VCC is not powered, the oscillator does not work. Vin charges capacitor C5, capacitor C6 and capacitor C8 through diode D1, resistor R5, diode D4, diode D5, diode D3, resistor R8 and transistor Q4. When the voltage of capacitor C5 reaches 26.6V, the voltage of capacitor C6 reaches 25.2V, the voltage on capacitor C8 reaches 24.9V, the charging is balanced, the voltage on capacitor C8 drives MOS transistor Q1, and the output voltage VO is 21.2V.

[0031] State 2: When Vin and VCC supply power at the same time, the oscillator starts to work. If the oscillator output is high at the start of oscillation, the circuit working state is the same as that of state 1, and...

Embodiment 3

This embodiment provides a three-time boost driving application, and its circuit schematic diagram is as follows image 3 As shown, the input voltage Vin of the circuit is 28V, VCC is 5V, and the required output voltage VO is 27.75±0.25V. The working principle of the circuit is as follows:

State 1: When Vin is powered and VCC is not powered, the oscillator does not work, Vin passes diode D1, resistor R5, diode D4, diode D5, diode D8, diode D9, diode D3, resistor R8 and transistor Q4 to capacitor C5, capacitor C9, capacitor C6 and capacitor C8 are charged. When the voltage of capacitor C5 reaches 26.6V, the voltage of capacitor C9 reaches 25.2V, the voltage of capacitor C6 reaches 23.8V, and the voltage of capacitor C8 reaches 23.5V, the charging is balanced, and the voltage on capacitor C8 drives the MOS Tube Q1, the output voltage VO is 19.8V.

[0039] State 2: When Vin and VCC supply power at the same time, the oscillator starts to work. If the oscillator output is high at ...

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

The invention discloses a self-oscillation-based power supply boost drive circuit, which belongs to the technical field of power supply control and comprises a self-oscillation module, a totem pole module and a boost circuit module which are connected in sequence. A switching tube Q1 is arranged between the voltage input end and the voltage output end, the voltage input end is electrically connected between the totem pole module and the booster circuit module, and the output end of the booster circuit module is connected to the switching tube Q1. According to the invention, the totem pole is driven by the self-excited oscillation module so as to enable the boost circuit module to carry out boost processing, so that the purpose of boosting the driving voltage is realized, the whole circuit does not need to adopt a special chip, and peripheral components are reduced, so that the cost is reduced while the output voltage is controllable, and the circuit is small in size; meanwhile, a common special chip can only be used for low-voltage occasions, while the circuit provided by the invention adopts basic electronic components and can be used for high-voltage occasions, so that the bus power supply range is widened, and the output voltage is adjustable.

Description

technical field [0001] The invention relates to the technical field of power supply control, in particular to a power supply boosting drive circuit based on self-excited oscillation. Background technique [0002] In some circuit application scenarios, it is necessary to control the output of the power supply. For example, the output voltage is gradually increased and kept in a stable state, and the final output voltage is approximately equal to the input voltage. There are three commonly used control methods, including simultaneous control of the positive and negative power supply, independent control of the negative power supply, and independent control of the positive power supply. Taking the method of only controlling the positive power of the power supply as an example, this method needs to deal with the driving of the switch tube. At present, the most commonly used method is to add an independent power supply as the driving power supply of the switch tube. The referenc...

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): H02M1/08H02M3/07H02M3/156
CPCH02M1/08H02M3/07H02M3/156Y02B70/10
Inventor 邱序涛
Owner 成都复锦功率半导体技术发展有限公司
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