CN207853780U - A kind of novel power supply device - Google Patents
A kind of novel power supply device Download PDFInfo
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- CN207853780U CN207853780U CN201721593905.XU CN201721593905U CN207853780U CN 207853780 U CN207853780 U CN 207853780U CN 201721593905 U CN201721593905 U CN 201721593905U CN 207853780 U CN207853780 U CN 207853780U
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- oxide
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- power supply
- supply device
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Abstract
The utility model provides a kind of novel power supply device, including output rectification unit, voltage output end, metal-oxide-semiconductor and operation amplifier unit, the output rectification unit is parallel with voltage output end, its circuit is equipped with metal-oxide-semiconductor, the metal-oxide-semiconductor both ends are parallel with operation amplifier unit, the utility model is simple in structure, it is easy to use, existing detection resistance is replaced by using the conduction impedance characteristic of metal-oxide-semiconductor, eliminate high-power current sense resistor in the prior art, the loss of power is reduced, power density is improved, reduces power supply cost.
Description
Technical field
The utility model is related to power-supply device technical field more particularly to a kind of novel power supply devices.
Background technology
The overcurrent protection of current block power output end or flow equalizing circuit design, are utilized in power supply output loop and go here and there
This voltage is sent to output overcurrent protection or output is flowed by the United Nations General Assembly's power current detection resistance by the voltage in detection resistance
Circuit unit.Since current low-voltage, high-current demand is more and more, in order to reduce the rectifier loss of output end, modular power source it is defeated
Outlet is all made of the metal-oxide-semiconductor of low conduction impedance to substitute common diode rectification.In this way when modular power source needs parallel current-sharing
In application, each modular power source rectification output end needs to connect isolating diode or metal-oxide-semiconductor is isolated, when output current is big,
In order to reduce the loss on isolating device, it is all made of metal-oxide-semiconductor isolation.But due to the conduction impedance of itself, its own also can metal-oxide-semiconductor
Generate larger loss.In this way on the output loop of power supply, concatenated high-power current sense resistor, metal-oxide-semiconductor generate damage
Consumption, reduces the efficiency and power density of entire power supply.
Utility model content
The utility model provides a kind of novel power supply device, simple in structure, easy to use, by using leading for metal-oxide-semiconductor
Logical impedance operator replaces existing detection resistance, eliminates high-power current sense resistor in the prior art, reduces power supply
Loss, improves power density, reduces power supply cost.
In order to solve the above technical problems, the embodiment of the present application provides a kind of novel power supply device, including output rectification list
Member, voltage output end, metal-oxide-semiconductor and operation amplifier unit, the output rectification unit are parallel with voltage output end, on circuit
Equipped with metal-oxide-semiconductor, the metal-oxide-semiconductor both ends are parallel with operation amplifier unit.
As the preferred embodiment of this programme, there are certain conduction impedances in conducting itself for the metal-oxide-semiconductor
RDS。
As the preferred embodiment of this programme, the operation amplifier unit downlink be connected with output overcurrent protection location or
Output current-sharing circuit unit.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages：
It is simple in structure, it is easy to use, existing detection resistance is replaced by using the conduction impedance characteristic of metal-oxide-semiconductor, is removed
High-power current sense resistor in the prior art, reduces the loss of power, improves power density, reduce power supply
Cost.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of the embodiment of the present application；
In Fig. 1,1, output rectification unit, 2, voltage output end, 3, metal-oxide-semiconductor, 4, operation amplifier unit, 5, output overcurrent protects
Protect unit or output current-sharing circuit unit.
Specific implementation mode
The utility model provides a kind of novel power supply device, simple in structure, easy to use, by using leading for metal-oxide-semiconductor
Logical impedance operator replaces existing detection resistance, eliminates high-power current sense resistor in the prior art, reduces power supply
Loss, improves power density, reduces power supply cost.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
Technical solution is stated to be described in detail.
As shown in Figure 1, a kind of novel power supply device, including output rectification unit 1, voltage output end 2, metal-oxide-semiconductor 3 and operation
Amplifying unit 4, the output rectification unit 1 are parallel with voltage output end 2, and circuit is equipped with metal-oxide-semiconductor 3, the metal-oxide-semiconductor
3 both ends are parallel with operation amplifier unit 4.
Wherein, in practical applications, there are certain conduction impedance R in conducting itself for the metal-oxide-semiconductor 3DS。
Wherein, in practical applications, 4 downlink of operation amplifier unit is connected with output overcurrent protection location or output
Flow equalizing circuit unit 5.
By using the conduction impedance characteristic of metal-oxide-semiconductor 3 when use, i.e., since metal-oxide-semiconductor 3 is when being connected situation, its own is deposited
In certain conduction impedance RDS, when output loop electric current flows through electric current IOWhen, generate R at 3 both ends of metal-oxide-semiconductorDS*IOVoltage drop,
The voltage is equivalent to the resistive voltage detected in the prior art, then by the voltage at this 3 both ends of metal-oxide-semiconductor be sent to output overcurrent protection or
Output current-sharing circuit unit 5.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation be not limited to the utility model although the utility model has been disclosed with preferred embodiment as above, it is any ripe
Professional and technical personnel is known, is not being departed within the scope of technical solutions of the utility model, when in the technology using the disclosure above
Hold the equivalent embodiment made a little change or be modified to equivalent variations, as long as being without departing from technical solutions of the utility model
Hold, any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention, still
It is within the scope of the technical solutions of the present invention.
Claims (3)
1. a kind of novel power supply device, including output rectification unit（1）, voltage output end（2）, metal-oxide-semiconductor（3）With operation amplifier list
Member（4）, which is characterized in that the output rectification unit（1）It is parallel with voltage output end（2）, circuit is equipped with metal-oxide-semiconductor
（3）, the metal-oxide-semiconductor（3）Both ends are parallel with operation amplifier unit（4）.
2. a kind of novel power supply device according to claim 1, which is characterized in that the metal-oxide-semiconductor（3）In conducting situation
Descending itself, there are certain conduction impedance RDS。
3. a kind of novel power supply device according to claim 1, which is characterized in that the operation amplifier unit（4）Under
Row is connected with output overcurrent protection location or output current-sharing circuit unit（5）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721593905.XU CN207853780U (en) | 2017-11-24 | 2017-11-24 | A kind of novel power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721593905.XU CN207853780U (en) | 2017-11-24 | 2017-11-24 | A kind of novel power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207853780U true CN207853780U (en) | 2018-09-11 |
Family
ID=63422649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721593905.XU Active CN207853780U (en) | 2017-11-24 | 2017-11-24 | A kind of novel power supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207853780U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149551A (en) * | 2018-09-14 | 2019-01-04 | 北京机械设备研究所 | A kind of active redundant parallel power-supplying circuit |
-
2017
- 2017-11-24 CN CN201721593905.XU patent/CN207853780U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149551A (en) * | 2018-09-14 | 2019-01-04 | 北京机械设备研究所 | A kind of active redundant parallel power-supplying circuit |
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