Switching power supply and floating rail LDO cascaded hybrid power supply and application thereof

A technology of switching power supply and hybrid power supply, which is applied in the direction of electrical components, adjustment of electric variables, and output power conversion devices, etc. It can solve the problems of inability to respond quickly and reduce the withstand voltage requirements of devices, so as to reduce the difficulty of design and process preparation, Effect of reducing output ripple and speeding up transient response

Pending Publication Date: 2021-07-02
HUAZHONG UNIV OF SCI & TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a hybrid power supply cascaded with a switching power supply and a floating-rail

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 power supply and floating rail LDO cascaded hybrid power supply and application thereof
  • Switching power supply and floating rail LDO cascaded hybrid power supply and application thereof
  • Switching power supply and floating rail LDO cascaded hybrid power supply and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0038] In order to achieve the above purpose, the first aspect, such as figure 1 As shown, the present invention provides a hybrid power supply in which a switching power supply and a floating rail LDO are cascaded, using a switching power supply cascading LDO topology, including: a switching power supply, an LDO, and a voltage stabilizing module;

[0039] The switching power supply is used to ...

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 switching power supply and floating rail LDO cascaded hybrid power supply and application thereof, and the hybrid power supply comprises a switching power supply, an LDO and a voltage stabilization module. The switching power supply is used for generating voltage VDDH and voltage VDDL so as to provide power supply voltage for the LDO; the voltage VDDH is greater than the voltage VDDL; the voltage VDDH is output from the first output end of the switching power supply to the VDD end of the LDO; the voltage VDDL is output from the second output end of the switching power supply to the VSS end of the LDO; the voltage stabilizing module is connected with the second output end of the switching power supply and is used for stabilizing the voltage VDDL and providing a discharge path for the hybrid power supply; and the LDO is used for reducing ripples in the voltage VDDH, providing voltage for the load and accelerating transient response of the load. The topological structure of the floating power rail power supply LDO cascade switching power supply is adopted, and meanwhile the purposes of reducing output ripples, accelerating transient response and achieving high-voltage output are achieved; in addition, the floating power rail power supply LDO obviously reduces the requirement for voltage resistance of a transistor in the LDO, and the design difficulty and the process preparation difficulty of the LDO are reduced.

Description

technical field [0001] The invention belongs to the technical field of integrated circuits, and more specifically relates to a hybrid power supply in which a switching power supply and a floating rail LDO are cascaded and an application thereof. Background technique [0002] In existing applications, when the voltage required by the load module to be powered is relatively high, a high-efficiency switching power supply is usually used directly to supply power to it, but the output voltage ripple of the switching power supply is usually large and the stability is poor; Taking the load module as a single photon avalanche diode (Single Photon Avalanche Diode, SPAD) as an example, the voltage range of the power supply to the SPAD is generally 10-30V, usually using a step-up DC-DC, a charge pump and other switching power supplies to directly supply power to it. At this time, the voltage ripple output by the switching power supply is relatively large, and the transient response to ...

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
IPC IPC(8): H02M3/07H02M1/08G05F1/56
CPCH02M3/07H02M1/08G05F1/56
Inventor 谭旻周紫梁
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap