CN206180875U - 24V D.C. regulated power supply - Google Patents

Abstract

The utility model provides a 24V D. C. Regulated power supply, includes transformer, rectifying and wave -filtering unit, auxiliary power supply unit, DCDC controller, DCDC converting unit, DCDC converting unit adopts the buckboost converter, the buckboost converter includes buck reduction voltage circuit and boost boost circuit, the 220V electric main is connected to the input of transformer, the input of rectifying and wave -filtering unit is connected to the output of transformer, the rectifying and wave -filtering unit with auxiliary power supply unit, DCDC controller, ring circuit of the consecutive constitution of DCDC converting unit, DCDC converting unit's output still is connected with over -current protection unit and overvoltage protection unit. The utility model discloses a buck reduction voltage circuit and boost boost circuit can step up to the DC voltage behind the rectifying and wave -filtering or step down as DCDC converting unit, with voltage stabilization to 24V, and the voltage range at adaptation scene that can be more extensive.

Description

24V D.C. regulated power supplies

Technical field

The utility model belongs to voltage-stabilized power supply technical field, especially a kind of 24V D.C. regulated power supplies.

Background technology

With the popularization of present electrical equipment, revolutionary change is brought to industrial and agricultural production, Defence business, science and technology, The development of society is accelerated, people have stepped into Electrification Age, have also been greatly improved the quality of life of people, more Carry out more too busy to get away these electrical equipments, with the development of science and technology, the precision of electric equipment is also gradually stepped up, there occurs earthshaking Change, but how to protect the not interfered by outside of these electric equipments, into current development in science and technology concern it is main Problem, the power network of current China is popularized, and huge network system gives us many convenience, but with access power network User increases, and consumer electronics variation, also result in the unstable of line voltage, voltage fluctuated, also into damaging The principal element of bad electric equipment.

The power supply of D.C. regulated power supply is mostly AC power, when the voltage or load resistance of communication power supply become During change, the VD of voltage-stablizer can all keep stabilization.D.C. regulated power supply is as electronic equipment is to high accuracy, high stable The direction of property high reliability is developed, and the power supply to electronic equipment proposes requirement high.The sorting technique of voltage-stabilized power supply is numerous It is many, there are D.C. regulated power supply and alternating current steady voltage plug by the type point of out-put supply；By mu balanced circuit and load DC voltage stabilizing electricity The connected mode in source point has series voltage stabilizing power supply and shunt voltage stabilizing power source；By the linear voltage-stabilized power supply of working condition point of adjustment pipe And switching power supply；There are simple voltage-stabilized power supply and feedback-type voltage-stabilized power supply by circuit types point.

Existing 24V voltage-stabilized power supplies using step-down by the way of, by the voltage voltage stabilizing of 25V~40V or so to 24V.And do not have Have it is a can be to carrying out the power supply of voltage stabilizing less than 24V voltages.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of buck mode burning voltage is The 24V D.C. regulated power supplies of 24V.

The utility model is solved its technical problem and is realized using following technical scheme：

A kind of 24V D.C. regulated power supplies, including transformer, rectification filtering unit, Auxiliary Power Units, DC/DC controllers, DC/DC converter units, the DC/DC converter units are included using buck/boost converters, the buck/boost converters Buck reduction voltage circuits and boost booster circuits, the transformer input connection 220V electric mains, the transformer it is defeated Go out the input of end connection rectification filtering unit, the rectification filtering unit and the Auxiliary Power Units, DC/DC controllers, DC/DC converter units are sequentially connected one loop circuit of composition, and the output end of the DC/DC converter units is also associated with excessively stream guarantor Shield unit and Overvoltage protecting unit.

Preferably, the buck/boost converters are by described buck reduction voltage circuits and the series connection of boost booster circuits Into.

Preferably, the other end of described over-current protecting unit and Overvoltage protecting unit is respectively connected with power output end.

Preferably, described DC/DC controllers use single-chip microcomputer.

Advantage of the present utility model and good effect are：

1st, the utility model uses buck reduction voltage circuits and boost booster circuits as DC/DC converter units, can be to whole Flow filtered DC voltage to be boosted or be depressured, by voltage stabilization to 24V, can widely adapt to the voltage model at scene Enclose.

2nd, the utility model circuit is simple, ripple is small, it is small to interfere, small volume, and consumptive material is few, efficiency high.

Brief description of the drawings

Fig. 1 is block diagram representation of the present utility model.

Specific embodiment

The utility model embodiment is further described below in conjunction with accompanying drawing：

As shown in figure 1, a kind of 24V D.C. regulated power supplies, including transformer, rectification filtering unit, Auxiliary Power Units, DC/DC controllers, DC/DC converter units, the DC/DC converter units use buck/boost converters, the buck/ Boost converters include buck reduction voltage circuits and boost booster circuits, the input connection 220V exchanges city of the transformer Electricity, the output end of the transformer connects the input of rectification filtering unit, the rectification filtering unit and the accessory power supply Unit, DC/DC controllers, DC/DC converter units be sequentially connected composition one loop circuit, the DC/DC converter units it is defeated Go out end and be also associated with over-current protecting unit and Overvoltage protecting unit.The buck/boost converters are depressured electricity by described buck Road and boost booster circuits are in series；Described over-current protecting unit and the other end of Overvoltage protecting unit are respectively connected with electricity Source output terminal；Described DC/DC controllers use single-chip microcomputer.

The buck/boost converters are also referred to as step-down/up type converter, are that a kind of output voltage can both be less than or be higher than The single tube of input voltage not isolated DC converter, but the polarity of its output voltage is opposite with input voltage.

Operation principle：220V electric mains become by transformer transformation, then by rectification filtering unit and then by alternating current It is the first DC voltage, the DC/DC converter units are adjusted first by the voltage stabilizing of Auxiliary Power Units and DC/DC controllers The 24V DC voltages that DC voltage changes into final voltage stabilizing are exported by power output end；If the first DC voltage is adopted when being less than 24V Boosted voltage stabilization to 24V with boost booster circuits；If being dropped using buck reduction voltage circuits when the first DC voltage is higher than 24V Voltage stabilization to 24V can widely be adapted to the voltage range at scene by pressure.

The utility model uses buck reduction voltage circuits and boost booster circuits as DC/DC converter units, can be to rectification Filtered DC voltage is boosted or is depressured, and by voltage stabilization to 24V, can widely adapt to the voltage range at scene； And circuit is simple, ripple is small, it is small to interfere, small volume, consumptive material is few, efficiency high.

It is emphasized that embodiment described in the utility model is illustrative, rather than limited, therefore this reality With the new embodiment being not limited to described in specific embodiment, it is every by those skilled in the art according to of the present utility model The other embodiment that technical scheme draws, also belongs to the scope of the utility model protection.

Claims (4)

1. a kind of 24V D.C. regulated power supplies, it is characterised in that：Including transformer, rectification filtering unit, Auxiliary Power Units, DC/ DC controllers, DC/DC converter units, the DC/DC converter units use buck/boost converters, the buck/boost to become Parallel operation includes buck reduction voltage circuits and boost booster circuits, the input connection 220V electric mains of the transformer, the change The output end of depressor connects the input of rectification filtering unit, the rectification filtering unit and the Auxiliary Power Units, DC/DC Controller, DC/DC converter units are sequentially connected one loop circuit of composition, and the output end of the DC/DC converter units is also connected with There are over-current protecting unit and Overvoltage protecting unit.

2. 24V D.C. regulated power supplies according to claim 1, it is characterised in that：The buck/boost converters are by institute The buck reduction voltage circuits and boost booster circuits stated are in series.

3. 24V D.C. regulated power supplies according to claim 1, it is characterised in that：Described over-current protecting unit and overvoltage The other end of protection location is respectively connected with power output end.

4. 24V D.C. regulated power supplies according to claim 3, it is characterised in that：Described DC/DC controllers use monolithic Machine.