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

Coodination converting for reduce peak point current load in multiswitch voltage-stabilizer system

A technology of power supply and input power supply, applied in electrical components, adjusting electrical variables, electrical signal transmission systems, etc., can solve problems such as large series resistance and inability to maintain voltage regulation

Inactive Publication Date: 2004-10-13
HEWLETT PACKARD DEV CO LP
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, with enough switching transistors switching in-phase, the current drawn by the input supply may increase to the point where regulation cannot be maintained
Battery powered devices are extremely sensitive to this condition due to the high series resistance of many types of batteries

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
  • Coodination converting for reduce peak point current load in multiswitch voltage-stabilizer system
  • Coodination converting for reduce peak point current load in multiswitch voltage-stabilizer system
  • Coodination converting for reduce peak point current load in multiswitch voltage-stabilizer system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] figure 1 is a schematic diagram of multiple compensated switching regulators with the same input supply. figure 2 is a schematic diagram of multiple boost switching regulators with the same input supply. These types of regulators were chosen for illustration purposes only. It should be understood that the present invention can be applied to other types of switching regulators known to those of ordinary skill in the art. Furthermore, the switch type in these regulators is an N-channel MOSFET as shown. This is also for illustration only, and other types of switching devices known to those of ordinary skill in the art may also be used.

[0019] exist figure 1 , the input voltage to the multiple regulators 1010, 1020, 1030 is V i . The aggregated input current into multiple regulators is I i . The input current into the first regulator 1010 is I i1 The input current into the second regulator 1020 is I i2 and so on, so that the input current into the third voltage...

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 switching transistors in multiple switching regulators sharing the same input power source are coordinated to lower the peak current drain on the input power source. The turn on times of the transistors in each regulator are set so that each switching transistor turns on at a predetermined time in a cycle. The predetermined time for each regulator is chosen so that the maximum peak current drain on the input power source is minimized. The predetermined times may be changed on-the-fly by inputs to the system when information about current or projected output loads are known. The transistors in each regulator may also be turned on when the transistor in the previous regulator in a sequence turns off.

Description

technical field [0001] This invention relates to switching power supplies, and more particularly to systems having multiple switching regulators that source current from the same input power supply. Background technique [0002] Many electronic devices require multiple power sources. For example, a device with analog and digital circuits can use a +5W volt supply for digital logic circuits and +12 volt, -12 volt supplies for analog circuits. In battery-powered devices, switching power supplies are one way to generate these supplies. [0003] A switching power supply acts as a controller switch, a high frequency transistor. Its frequency is generally in the range of 20 kHz to 1 MHz. This involves pulling current from the input supply to produce a clipped intermediate voltage, which is filtered by an L-C (inductor-capacitor) circuit to produce a smoother output voltage. The output voltage is controlled by changing the ratio of the transistor's on-time and off-time. Unfort...

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): H02M3/155H02M1/084H02M3/156H02M3/158
CPCH02M1/084Y10T307/414H02M3/1584H02M3/156H02M2001/008H02M1/008
Inventor E·F·阿尔斯T·C·奥利弗R·L·科奇斯
Owner HEWLETT PACKARD DEV CO LP