CN211859969U - Small-size 150W AC/DC switching power supply - Google Patents
Small-size 150W AC/DC switching power supply Download PDFInfo
- Publication number
- CN211859969U CN211859969U CN202020858678.4U CN202020858678U CN211859969U CN 211859969 U CN211859969 U CN 211859969U CN 202020858678 U CN202020858678 U CN 202020858678U CN 211859969 U CN211859969 U CN 211859969U
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- output
- power supply
- switching power
- 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
Abstract
The utility model discloses a little volume 150WAC DC switching power supply, whole power module includes: the alternating current input circuit is used for filtering and resisting external interference; the rectifying circuit is used for completing alternating current-direct current conversion; the isolation and power conversion circuit is used for isolating high-frequency interference and completing voltage and current conversion; an output circuit for electrical energy storage and output filtering; the control circuit is used for controlling the input/output voltage and current of the whole power supply module and finishing the protection function; the voltage reference and output regulating circuit is used for outputting stabilized voltage; and the feedback circuit is used for outputting voltage feedback and finishing voltage stabilization control. The high-frequency-range high-frequency-resistance high-frequency-.
Description
The technical field is as follows:
the utility model belongs to the technical field of switching power supply, concretely relates to little volume 150W AC/DC switching power supply.
Background art:
the switching power supply gradually replaces the traditional linear power supply due to the advantages of small volume, light weight, high efficiency, low heat productivity, stable performance and the like, and is widely applied to electronic products, instruments and equipment.
Although the switch power supply in the prior art has the advantages of small size, high efficiency and the like compared with a linear power supply, the switch power supply also has the defects of high noise, weak interference resistance and the like when being installed in radio frequency communication equipment.
The utility model has the following contents:
an object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a little volume 150W AC/DC switching power supply, can be used to among the radio frequency communication equipment, solved switching power supply and easily received the unable normal problem of working of high frequency interference.
The utility model aims at solving through the following technical scheme: a small-volume 150W AC/DC switching power supply, the whole power supply module comprises:
the alternating current input circuit is used for filtering and resisting external interference;
the rectifying circuit is used for completing alternating current-direct current conversion;
the isolation and power conversion circuit is used for isolating high-frequency interference and completing voltage and current conversion;
an output circuit for electrical energy storage and output filtering;
the control circuit is used for controlling the input/output voltage and current of the whole power supply module and finishing the protection function;
the voltage reference and output regulating circuit is used for outputting stabilized voltage;
and the feedback circuit is used for outputting voltage feedback and finishing voltage stabilization control.
Further, the output end of the rectifying circuit is connected with an isolation transformer.
Furthermore, the control circuit adopts an integrated PWM control chip.
Furthermore, the voltage reference and output regulation circuit is connected with the voltage division network by adopting an integrated voltage reference chip.
The beneficial effects of the utility model reside in that:
the utility model discloses a switching power supply input voltage range is wide for 90V ~ 264V, and the frequency range is wide for 47Hz ~ 63Hz, adopts the AC input circuit who is used for filtering and anti external disturbance for keep apart high frequency disturbance and accomplish voltage, the isolation and the power conversion circuit etc. of current transformation, it is wide to possess input voltage and frequency range, efficient, the noise is little, the advantage that the interference killing feature is strong, adopt the control circuit who is used for whole power module input/output voltage, current control and accomplishes protect function simultaneously, make the utility model discloses a switching power supply still possesses overload and short-circuit protection function.
Description of the drawings:
fig. 1 is a schematic structural diagram of a small-sized 150W AC/DC switching power supply of the present invention.
The device comprises a 1-alternating current input circuit, a 2-rectifying circuit, a 3-isolation and power conversion circuit, a 4-output circuit, a 5-control circuit, a 6-voltage reference and output regulation circuit and a 7-output voltage feedback circuit.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the accompanying drawings:
as shown in FIG. 1, the small-sized 150W AC/DC switching power supply of the present invention uses AC power with a wide frequency range (input frequency: 47 Hz-63 Hz) and a wide voltage range (input voltage: AC 90V-264V) as an input power supply, and inputs current: the voltage regulator is less than or equal to 1.5A, and is used for filtering and resisting external interference through the alternating current input circuit 1 and then converting alternating current into direct current through the rectifying circuit 2.
The high-voltage direct-current voltage output by the rectifying circuit 2 is sent to a PWM control circuit 5 at the rear electrode for overload detection, meanwhile, the output end of the rectifying circuit 2 is connected with the primary side of an isolation transformer and is used as the input of an isolation and power conversion circuit 3, the isolation and power conversion circuit 3 is used for isolating high-frequency interference and finishing voltage and current conversion, two paths of direct-current voltage are finally output by the secondary side of the isolation transformer, the first path of direct-current voltage is used as a working power supply of the PWM control circuit 5 after passing through a protection circuit and output filtering, and the second path of direct-current voltage is.
The output circuit 4 stores and filters electric energy, is connected with the voltage reference and output regulating circuit 6, compares the output voltage with the voltage before output filtering, and sends an error signal to the output voltage feedback circuit 7; the output voltage feedback circuit 7 feeds the acquired voltage error signal back to the PWM control circuit 5, when the voltage feedback end of the PWM control circuit 5 detects a voltage difference, the voltage difference is compared with the input current of the current detection end of the PWM control circuit 5, and the duty ratio of the PWM wave is adjusted according to the comparison result, thereby realizing the adjustment of the output voltage DC. Outputting the maximum rated current: 12.5A, rated output: 150W, output voltage adjustable range: 10.8V-13.2V.
The utility model discloses install in radio frequency electronics complete machine and equipment, can work in the high strength radio frequency signal environment, the interference killing feature is strong, if at 70MHz ~ 1300MHz, 1.8GHz ~ 3.6GHz, 5.7GHz ~ 5.9GHz combined action down still can normally work, phenomenons such as restart, protection do not appear.
The utility model relates to a small-size 150W AC/DC switching power supply, circuit topology belong to the flyback conversion of area isolation.
Claims (4)
1. A small-volume 150W AC/DC switching power supply, characterized by: the whole power module includes:
the alternating current input circuit is used for filtering and resisting external interference;
the rectifying circuit is used for completing alternating current-direct current conversion;
the isolation and power conversion circuit is used for isolating high-frequency interference and completing voltage and current conversion;
an output circuit for electrical energy storage and output filtering;
the control circuit is used for controlling the input/output voltage and current of the whole power supply module and finishing the protection function;
the voltage reference and output regulating circuit is used for outputting stabilized voltage;
and the feedback circuit is used for outputting voltage feedback and finishing voltage stabilization control.
2. A small-volume 150W AC/DC switching power supply as claimed in claim 1, wherein: and the output end of the rectifying circuit is connected with an isolation transformer.
3. A small-volume 150W AC/DC switching power supply as claimed in claim 1, wherein: the control circuit adopts an integrated PWM control chip.
4. A small-volume 150W AC/DC switching power supply as claimed in claim 1, wherein: the voltage reference and output regulation circuit is connected with the voltage division network by adopting an integrated voltage reference chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020858678.4U CN211859969U (en) | 2020-05-20 | 2020-05-20 | Small-size 150W AC/DC switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020858678.4U CN211859969U (en) | 2020-05-20 | 2020-05-20 | Small-size 150W AC/DC switching power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211859969U true CN211859969U (en) | 2020-11-03 |
Family
ID=73236133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020858678.4U Active CN211859969U (en) | 2020-05-20 | 2020-05-20 | Small-size 150W AC/DC switching power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211859969U (en) |
-
2020
- 2020-05-20 CN CN202020858678.4U patent/CN211859969U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109768716B (en) | Control method of power electronic transformer | |
| TW201338348A (en) | Uninterruptible power supply system | |
| CN211859969U (en) | Small-size 150W AC/DC switching power supply | |
| CN112019063A (en) | Power supply system with ultrahigh power density | |
| CN108270356B (en) | Direct-current distribution network energy router based on PWM/diode hybrid rectification structure and control method thereof | |
| CN103296747A (en) | Uninterrupted power system | |
| CN113364265B (en) | Multi-mode power converter for field operations and control method | |
| CN212486395U (en) | Power supply system with ultrahigh power density | |
| CN108696159A (en) | A kind of unmanned electromechanical sources of 10KW | |
| CN211457010U (en) | High-temperature-resistant AC-DC power supply | |
| CN201639482U (en) | High-voltage isolation multiple-output IGCT driving power supply | |
| CN204244076U (en) | Ultra-wide input voltage DC-DC power source | |
| CN104410278B (en) | DCDC converter | |
| CN113765365A (en) | Control method of switching power supply and switching power supply | |
| CN108696144B (en) | Interleaved flyback DC/DC hardware modulation compensation circuit | |
| CN2619405Y (en) | Multi-path DC program control power source | |
| CN109494997A (en) | A kind of high frequency switch power based on MOSFET pipe | |
| CN111464054A (en) | Direct current switch power supply | |
| CN205232031U (en) | Single -ended switch voltage stabilizing circuit of high frequency | |
| CN111416443A (en) | Device capable of realizing wireless power transmission voltage stabilization output | |
| CN117175596B (en) | Tidal current transfer device based on switch coupling | |
| CN116545249B (en) | Detection PFC power on-off locking circuit and switching power supply | |
| Li et al. | An Interleaving 90° Three-Level DC-DC Converter and Current Sharing Control | |
| CN110829876B (en) | Topological structure of single-phase solid-state transformer | |
| CN217469750U (en) | Numerical control alternating current-direct current self-adaptation low ripple adapter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |