CN216216528U - Power supply circuit with ultra-wide input voltage range - Google Patents
Power supply circuit with ultra-wide input voltage range Download PDFInfo
- Publication number
- CN216216528U CN216216528U CN202122331978.4U CN202122331978U CN216216528U CN 216216528 U CN216216528 U CN 216216528U CN 202122331978 U CN202122331978 U CN 202122331978U CN 216216528 U CN216216528 U CN 216216528U
- Authority
- CN
- China
- Prior art keywords
- power supply
- voltage
- input end
- mos tube
- direct current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model discloses a power supply circuit with an ultra-wide input voltage range, which comprises a direct current power supply input end, a first MOS (metal oxide semiconductor) tube, a second MOS tube, a PWM (pulse-width modulation) control unit, a PRM (pulse-width modulation) pre-voltage stabilizing module and a VTM (voltage-to-metal) voltage conversion module, wherein a first capacitor is connected between the positive electrode and the negative electrode of the direct current power supply input end, the positive electrode of the direct current power supply input end is connected with the drain electrode of the first MOS tube, the grid electrodes of the first MOS tube and the second MOS tube are connected with the output end of the PWM control unit, the source electrode of the first MOS tube is connected with the drain electrode of the second MOS tube and is connected with the positive input end of the PRM pre-voltage stabilizing module through a first inductor, a second capacitor is connected between the negative electrode and the positive electrode of the PRM pre-voltage stabilizing module, the negative input end of the PRM pre-voltage stabilizing module is connected with the negative electrode of the direct current power supply input end, the output end of the PRM pre-voltage stabilizing module is connected with the input end of the VTM voltage conversion module, and the output end of the VTM voltage conversion module is connected with the positive electrode of the output end of the power supply circuit, A negative terminal. The utility model has the advantages of less used devices, convenient control, high integration level and capability of generating stable isolated direct current voltage.
Description
Technical Field
The utility model relates to the technical field of direct-current power supplies, in particular to a power supply circuit with an ultra-wide input voltage range.
Background
In a power supply system with an ultra-wide input voltage range, such as an onboard 28V dc power supply system and an onboard 270V dc power supply system, two different power conversion circuits are generally required to convert a supply voltage into a voltage range and a power requirement required by a back-end load, and the circuit design and control strategy are complex and the circuit universality is low.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a power supply circuit with an ultra-wide input voltage range, which requires fewer peripheral components and can reduce the number of switching circuits between a high-voltage circuit and a low-voltage circuit in a power supply system with a wide input voltage range.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a power supply circuit with an ultra-wide input voltage range comprises a direct-current power supply input end, a first MOS tube V1, a second MOS tube V2, a PWM control unit U1, a PRM pre-voltage-stabilizing module N1 and a VTM voltage conversion module N2, wherein a first capacitor C1 is connected between the positive electrode and the negative electrode of the direct-current power supply input end, the positive electrode of the direct-current power supply input end is connected with the drain electrode of the first MOS tube V1, the grids of the first MOS tube V1 and the second MOS tube V2 are connected with the output end of the PWM control unit U1, the source electrode of the first MOS tube V1 is connected with the drain electrode of the second MOS tube V2 and is connected with the positive input end of the PRM pre-voltage-stabilizing module N1 through a first inductor L1, a second capacitor C2 is connected between the negative input end of the PRM pre-voltage-stabilizing module N1 and the positive input end, the negative input end of the PRM pre-voltage-stabilizing module N1 is connected with the output end of the VTM voltage conversion module N2, and the output end of the VTM voltage conversion module N2 is connected with the output end of the power supply output end 2, And outputting a negative terminal.
Further, the input voltage range of the input end of the direct current power supply is a direct current voltage of 22V-330V.
Further, the power circuit with the ultra-wide input voltage range outputs a dc voltage of 28V.
Further, the first MOS transistor M1 and the second MOS transistor M2 are both N-channel enhancement type MOS transistors.
Due to the adoption of the technical scheme, the utility model has the following advantages:
the power supply circuit with the ultra-wide input voltage range is simple in structure, reasonable and reliable in design, few in used devices, convenient to control, high in integration level and strong in universality, adopts a two-stage cascade mode, the front end is a high-voltage BUCK circuit, the rear stage is a PRM pre-voltage stabilizing module and a VTM voltage conversion module to generate isolated stable direct-current voltage, and the power supply circuit has wide application prospect in the field of power supply application.
Drawings
Fig. 1 is a schematic diagram of a power supply circuit for an ultra-wide input voltage range of the present invention.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the power circuit with an ultra-wide input voltage range includes a dc power input terminal, a first MOS transistor V1, a second MOS transistor V2, a PWM control unit U1, a PRM pre-regulator module N1, and a VTM voltage conversion module N2, wherein a first capacitor C1 is connected between a positive electrode Vi and a negative electrode-Vi of the dc power input terminal to filter an output signal, the positive electrode of the dc power input terminal is connected to a drain of the first MOS transistor V1, gates of the first MOS transistor V1 and the second MOS transistor V2 are both connected to an output terminal of the PWM control unit U1, and the PWM control unit U1 controls on and off of the first MOS transistor V1 on the high side and the second MOS transistor V2 on the low side to change an input voltage; the source of the first MOS transistor V1 is connected to the drain of the second MOS transistor V2 and is connected to the positive input terminal of the PRM pre-voltage stabilization module N1 through a first inductor L1, a second capacitor C2 is connected between the negative input terminal and the positive input terminal of the PRM pre-voltage stabilization module N1, the first inductor L1 and the second capacitor C2 realize energy storage and filtering functions, the negative input terminal of the PRM pre-voltage stabilization module N1 is connected to the source of the second MOS transistor V2 and the negative terminal of the dc power supply input terminal, the output terminal of the PRM pre-voltage stabilization module N1 is connected to the input terminal of the VTM voltage conversion module N2, and the output terminal of the VTM voltage conversion module N2 is connected to the output positive terminal Vo and the output negative terminal-Vo of the power supply circuit.
The input voltage range of the input end of the direct current power supply is 22V-330V direct current voltage.
The output voltage of the power supply circuit with the ultra-wide input voltage range is 28V direct-current voltage.
The first MOS transistor M1 and the second MOS transistor M2 are both N-channel enhancement type MOS transistors.
The first MOS transistor M1 and the second MOS transistor M2 are both IPB60R080P 7.
The model of the PWM control unit U1 is LM 5025.
The model of the PRM pre-regulator module N1 is MP028F036M12 AL.
The model of the VTM voltage conversion module N2 is VTM48EF480T006a 00.
The power supply circuit with the ultra-wide input voltage range has the working principle that: when the input voltage range is 54V-330V, a high-voltage BUCK circuit which is arranged at the front end and consists of a first MOS transistor V1, a second MOS transistor V2, a PWM control unit U1, a first capacitor C1, a first inductor L1 and a second capacitor C2 generates a stable 48V direct-current voltage, and a PRM pre-voltage-stabilizing module (the input voltage range is 16V-50V) and a VTM voltage conversion module at the rear stage generate an isolated stable 28V direct-current voltage; when the input voltage range is 22V-54V, the maximum duty ratio output by the PWM control unit U1 of the high-voltage BUCK circuit is fixed to 90%, the output voltage of the high-voltage BUCK circuit changes along with the change of the input voltage, the output voltage range of the high-voltage BUCK circuit is 19V-49V, and the high-voltage BUCK circuit generates 28V direct-current voltage with stable isolation through a PRM pre-voltage stabilizing module (the input voltage range is 16V-50V) and a VTM voltage conversion module at the later stage.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A power supply circuit with an ultra-wide input voltage range is characterized in that: the direct current voltage stabilizing circuit comprises a direct current power supply input end, a first MOS tube V1, a second MOS tube V2, a PWM control unit U1, a PRM pre-voltage stabilizing module N1 and a VTM voltage conversion module N2, wherein a first capacitor C1 is connected between the positive electrode and the negative electrode of the direct current power supply input end, the positive electrode of the direct current power supply input end is connected with the drain electrode of a first MOS tube V1, the grid electrodes of the first MOS tube V1 and the second MOS tube V2 are connected with the output end of the PWM control unit U1, the source electrode of the first MOS tube V1 is connected with the drain electrode of a second MOS tube V2 and is connected with the positive input end of the PRM pre-voltage stabilizing module N1 through a first inductor L1, a second capacitor C2 is connected between the negative input end and the positive input end of the PRM pre-voltage stabilizing module N1, the negative input end of the second MOS tube V2 is connected with the source electrode of the negative electrode of the direct current power supply input end, the output end of the PRM pre-voltage stabilizing module N1 is connected with the input end of the VTM voltage conversion module N2, and the VTM voltage conversion module N2 is connected with the output end of the VTM voltage conversion module N2 output circuit, And outputting a negative terminal.
2. A power supply circuit for an ultra-wide input voltage range, as recited in claim 1, wherein: the input voltage range of the input end of the direct current power supply is 22V-330V direct current voltage.
3. A power supply circuit for an ultra-wide input voltage range, as recited in claim 1, wherein: the output voltage is 28V DC voltage.
4. A power supply circuit for an ultra-wide input voltage range, as recited in claim 1, wherein: the first MOS transistor M1 and the second MOS transistor M2 are both N-channel enhancement type MOS transistors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122331978.4U CN216216528U (en) | 2021-09-26 | 2021-09-26 | Power supply circuit with ultra-wide input voltage range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122331978.4U CN216216528U (en) | 2021-09-26 | 2021-09-26 | Power supply circuit with ultra-wide input voltage range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216216528U true CN216216528U (en) | 2022-04-05 |
Family
ID=80922915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122331978.4U Active CN216216528U (en) | 2021-09-26 | 2021-09-26 | Power supply circuit with ultra-wide input voltage range |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216216528U (en) |
-
2021
- 2021-09-26 CN CN202122331978.4U patent/CN216216528U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107546959B (en) | Switching power supply, electronic equipment and switching power supply control method | |
| CN203368326U (en) | Boost circuit and LED driving power supply | |
| CN113708626B (en) | Hundred percent duty cycle generating circuit suitable for COT voltage converter | |
| CN109412397B (en) | Secondary ramp compensation circuit of pulse width modulation current mode switching power supply | |
| US20210328435A1 (en) | Inverter | |
| CN216216528U (en) | Power supply circuit with ultra-wide input voltage range | |
| JP2012210023A (en) | Switching power supply device and method of controlling switching power supply device | |
| CN105846674B (en) | Non-isolated high no-load voltage ratio two-way DC converter | |
| CN216599425U (en) | Boost circuit | |
| CN106972751B (en) | Double-tube Z-source direct-current voltage converter | |
| CN111564972B (en) | DC-DC circuit | |
| CN216751537U (en) | Direct circuit applied to buck converter | |
| CN210839041U (en) | Charging device and driving power generation circuit | |
| CN114785130A (en) | Multi-reference-level wide-range gain adjustment high-transformation-ratio DC/DC converter | |
| CN210183230U (en) | Inverter circuit for high-power vehicle-mounted bidirectional DC | |
| CN108649797B (en) | DC-DC power supply structure based on Boost positive and negative output | |
| CN113904550A (en) | Isolated resonant converter controlled by PWM | |
| CN109728725B (en) | Bidirectional high-gain Cuk circuit with tap inductor | |
| CN214014110U (en) | Step-down and step-up DC-DC converter structure with expanded output voltage | |
| CN216216525U (en) | Low ripple pulse width modulation's voltage follower circuit | |
| KR101774113B1 (en) | Power converter based on quasi z-source inverter | |
| CN218301231U (en) | BOOST circuit with voltage-stabilizing input | |
| CN219779997U (en) | Low-cost isolating switch power supply circuit | |
| CN110380620B (en) | Inverter circuit for high-power vehicle-mounted bidirectional DC | |
| CN212517041U (en) | Switching circuit for ammeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |