CN208538009U - A kind of 0.5V power supply - Google Patents
A kind of 0.5V power supply Download PDFInfo
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- CN208538009U CN208538009U CN201821300492.6U CN201821300492U CN208538009U CN 208538009 U CN208538009 U CN 208538009U CN 201821300492 U CN201821300492 U CN 201821300492U CN 208538009 U CN208538009 U CN 208538009U
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- voltage
- power supply
- ltc3649
- stablizer
- output
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Abstract
The utility model relates to use a kind of 0.5V powersupply system, twin voltage including synchronous buck type voltage-stablizer LTC3649, multiple parallel connections follows power supply, the twin voltage follows the input voltage that the first voltage of power input is synchronous buck type voltage-stablizer LTC3649, twin voltage follows the output voltage that the second voltage of power input is synchronous buck type voltage-stablizer LTC3649, the twin voltage of multiple parallel connections follows the output of power supply, with the output voltage of synchronous buck type voltage-stablizer LTC3649 after tracking amplifier circuit configuration it is in parallel after, obtain final output voltage.It can be widely applied to computer, TV, display, interior of mobile phone power supply, it can also be used to the secondary power system of associated electronic device power supply.Compared with prior art, 0.5V power supply is followed using twin voltage, and electric current is effectively ensured, i.e., its power stability can be effectively ensured under low voltage condition.
Description
Technical field
The utility model relates to a kind of power supply more particularly to a kind of 0.5V power supplies.
Background technique
Power electronic equipment power-supply system provides power supply for electronic equipment, however the higher phenomenon of power-supply system power consumption is more general
Time, common supply voltage is 5V, 12V or more, and energy consumption is higher in use, causes equipment heating phenomenon more apparent.It adopts
With 0.5V electric supply system, i.e., " small voltage " is powered, and is not only able to satisfy high frequency and high density service requirement, and number
Formula webserver data meets equipment service requirement when transmitting, and effectively avoids equipment heating, reduces energy consumption, reduces power supply
End fever, extends service life of equipment.
Utility model content
The utility model provides a kind of 0.5V power supply, solves the problems, such as small voltage power supply, technical solution is such as
It is lower described:
A kind of 0.5V power supply, the twin voltage including synchronous buck type voltage-stablizer LTC3649, multiple parallel connections follow electricity
Source, the twin voltage follow the input voltage that the first voltage of power input is synchronous buck type voltage-stablizer LTC3649, twin voltage
Follow the output voltage that the second voltage of power input is synchronous buck type voltage-stablizer LTC3649, the twin voltages of multiple parallel connections with
It is in parallel after tracking amplifier circuit configuration with the output voltage of synchronous buck type voltage-stablizer LTC3649 with the output of power supply
Afterwards, final output voltage is obtained.
In tracking amplifier circuit configuration, the V including synchronous buck type voltage-stablizer LTC3649FBPin, output voltage and
Triode, the V of the synchronous buck type voltage-stablizer LTC3649FBThe collector of pin connecting triode, synchronous buck type voltage-stablizer
The emitter of the output voltage connecting triode of LTC3649, the base stage of triode and multiple twin voltages follow the output of power supply simultaneously
Connection.
In the circuit mechanism that the twin voltage follows power supply to export, including operational amplifier and triode, operational amplifier
The end a and operational amplifier V—End and the emitter of triode are connected, first voltage successively with current source reference power supply I
With the V of operational amplifier+End is connected, and the end b of operational amplifier is connected between current source reference power supply I and resistance R, and second
Voltage is connected to the collector of triode, and the output end of operational amplifier is connected to the base stage of triode, emitter output resistance
R0Static output electric current is formed afterwards.
It is grounded after resistance R is in parallel with capacitor C.
Capacitor C is provided between the emitter and ground connection of triodeout。
The circuit has twin voltage to follow with subnormal voltage operation, it is ensured that electric current driving and circuit safety.Meanwhile it can be effective
Avoid because dash current is excessively high, too low fluctuation due to lead to circuit burnout or unusual fluctuation.
The utility model can be widely applied to computer, TV, display, interior of mobile phone power supply, it can also be used to associated electrical
The secondary power system of equipment power supply.Compared with prior art, 0.5V power supply is followed using twin voltage, and electricity is effectively ensured
Stream, i.e., can be effectively ensured its power stability under low voltage condition.Meanwhile the 0.5V powersupply system takes in digital network
Meet equipment service requirement when device data transmission of being engaged in, and effectively avoid equipment heating, reduce energy consumption, reduces power end fever, prolong
Long service life of equipment.
Detailed description of the invention
Fig. 1 is common circuit construction of electric power figure；
Fig. 2 is current source reference power circuit structure chart；
Fig. 3 is that twin voltage follows circuit construction of electric power figure；
Fig. 4 is synchronous buck type voltage-stablizer LTC3649 structure chart；
Fig. 5 is 0.5V power supply structure chart provided by the utility model.
Specific embodiment
As shown in Figure 1, the power technology uses amplifier in common power circuit, change Power operation mode.
R is provided between the end a (inverting input terminal, i.e. ,-end) of operational amplifier and ground connection1, the end a and R1Between draw with
The R that output end (Vo) is connected2.The end b (non-inverting input terminal, i.e. ,+end) and the voltage V of operational amplifier1It is connected.
Its output voltage are as follows:
Vo=Vi+Vi*R2/R1
If R2=0, then
Vo=Vi
The circuit structure is simple, and output voltage follows input voltage, limits the degree of output voltage reduction.
Further, according to current source reference power supply, circuit structure diagram is as shown in Figure 2:
The end a of operational amplifier is connected with output end, the supply voltage V of operational amplifier+With voltage V1It is connected, electricity
Press V1Pass through current source reference power supply I and slide rheostat R1After be grounded.
Its output voltage are as follows:
Vo=I*R
Wherein, R is slide rheostat R1Resistance value, pass through resistance in the circuit and feed electric current, output voltage Vo and input
Voltage is equal.
If R=0:
Vo=0
The circuit has the advantage that
(1) amplifier has identical gain always at runtime, and pressure stabilizing is unrelated with output voltage Vo.
(2) if pressure stabilizing is associated with output voltage Vo, small steady resistance R only need to be accessed, so that output voltage and pressure stabilizing pressure
Difference is within 50mV.
As shown in figure 3, design twin voltage follows power supply on the basis of current source reference power supply, linear voltage regulator is realized
Basic circuit, and by transmission transistor, so that the voltage for being transferred to transmission transistor is lower, but output voltage is up to 0.5V,
So power supply power consumption is reduced, while not influencing pressure stabilizing.Transmission transistor uses triode.Twin voltage refers to first voltage
Vc and second voltage Vi。
The end a of operational amplifier and the V of operational amplifier—The emitter of end and triode is connected, and voltage Vc is just
The pole successively V with current source reference power supply I and operational amplifier+End is connected, and the end b of operational amplifier is connected to current source base
Between quasi- power supply I and resistance R, voltage ViAnode be connected to the collector of triode, the output end of operational amplifier is connected to
The base stage of triode is grounded after resistance R is in parallel with capacitor C, is provided with capacitor C between the emitter and ground connection of triodeout, hair
Emitter-base bandgap grading output resistance R0After form quiescent current, at this time output voltage be VO。
The circuit has the advantage that
(1) control circuit has enough voltage.
(2) quiescent current passes through output resistance R0Outflow.
As shown in figure 4, screening comparison is carried out on this basis, using synchronous buck type voltage-stablizer LTC3649 chip.The core
The pin connection relationship of piece is as shown in the figure.
The monitoring pin drawn by IMON terminal can check output electric current, output voltage VOUTIt is adjustable to input voltage VIN
With any voltage between ground voltage (i.e. 0V), it is applicable to various low pressure outputs.
High current is such as needed, linear voltage regulator in parallel can be used and obtain.I.e. synchronous buck type voltage-stablizer LTC3649's is defeated
Out by tracking the circuit structure of amplifier circuit configuration generation in parallel with multiple parallel-current sources reference power supply, so that circuit
Transmission transistor both end voltage is maintained within 0.5V, reaches " small voltage " power supply effect.
As shown in figure 5,0.5V power supply provided by the utility model is obtained using linear voltage regulator in parallel.This reality
It with novel on the basis of current source, is followed using twin voltage, electric current is effectively ensured and stablizes, i.e., can effectively be protected under low voltage condition
Its power is demonstrate,proved, is guaranteeing that circuit reliability operation is outer, safety and energy conservation are efficient parallel.
Compared with common power supply voltage is 5V, 12V or more, the powersupply system is in 0.5V low voltage condition
Under, guarantee power stability, reduce power loss, reduces calorific value.
Circuit structure diagram is as shown in Figure 5: multiple twin voltages as shown in Figure 3 follow power sources in parallel, synchronous buck type pressure stabilizing
The input voltage V of device LTC3649INThe first voltage of power supply, synchronous buck type voltage-stablizer LTC3649 are followed as multiple twin voltages
Output voltage the second voltage of power supply, the output voltage of synchronous buck type voltage-stablizer LTC3649 are followed as multiple twin voltages
After tracking amplifier circuit configuration, then after following with multiple twin voltages the output-parallel of power supply, final output voltage is obtained
Vout。
It tracks in amplifier circuit configuration, the V including synchronous buck type voltage-stablizer LTC3649FBPin, triode are synchronous
The emitter of the output voltage connecting triode of buck regulator LTC3649, VFBThe collector of pin connecting triode, base stage
The output-parallel of power supply is followed with multiple twin voltages.
VFBPin is error amplifier feedback pin, is used for burning voltage.
In this way, front side voltage is synchronized the input of buck regulator LTC3649 after multiple twin voltages follow power sources in parallel
Voltage VINLimitation, the output voltage that rear side voltage is tracked amplifier circuit configuration are limited, and are not in that voltage is excessive too small
The problem of.Meanwhile stable circuit output can be used for.
Here is some introductions about LTC3649 chip:
LTC3649 is a high efficiency, the synchronous one chip buck regulator of 60V, 4A.The voltage-stablizer has using list
The output voltage of a resistor setting, internal compensation function, and can be in wide VOUTHigh efficiency is realized in range.
The work in the input voltage range of 3.1V -60V of this buck regulator, and one is provided from (VIN–
0.5V) to the adjustable rail-to-rail output range of ground potential, while it can transport the output electric current of up to 4A.In addition, switching frequency is also
It can be adjusted using an external resistor, provide an optional mode input, to allow user to make an uproar by sacrificing ripple
Sound index exchanges improved efficiency when light load for；Burst mode operation can provide highest efficiency under light load conditions, and
Continuous mode is forced then to can provide output ripple and low.MODE/SYNC pin may further be used to allow users to switching frequency is synchronous
To an external clock.
LTC3649 running uses peak-current mode framework, is realized using intrinsic Cycle by Cycle current limit protection feature
Fast transient response.In addition, it also possesses programmable output current limit, current surveillance and input voltage regulation function.
The monitoring pin drawn by IMON terminal can check that output electric current, output voltage are adjustable to input voltage and ground connection
Any voltage between voltage (i.e. 0V) is applicable to various low pressure outputs.
High current is such as needed, linear voltage regulator in parallel can be used and obtain, i.e., synchronous buck type voltage-stablizer LTC3649's is defeated
Out by tracking the circuit structure of amplifier circuit configuration generation in parallel with multiple parallel-current sources reference power supply, so that circuit
Transmission transistor both end voltage is maintained within 0.5V, reaches " small voltage " power supply effect.
So the utility model is by using synchronous buck type voltage-stablizer LTC3649 chip, so that the circuit is with low-voltage
Operation, and there is twin voltage to follow, it is ensured that electric current driving and circuit safety.Using " small voltage " 0.5V powersupply system, reach
Firm power effect, meanwhile, can effectively avoid because dash current is excessively high, too low fluctuation due to lead to circuit burnout or unusual fluctuation.This is small
Electric supply system can be widely applied to computer, TV, display, interior of mobile phone power supply, it can also be used to associated electronic device electricity
The secondary power system in source.
The utility model can be widely applied to computer, TV, display, interior of mobile phone power supply, it can also be used to associated electrical
The secondary power system of equipment power supply.Compared with prior art, 0.5V power supply is followed using twin voltage, and electricity is effectively ensured
Stream, i.e., can be effectively ensured its power stability under low voltage condition.Meanwhile the 0.5V powersupply system takes in digital network
Meet equipment service requirement when device data transmission of being engaged in, and effectively avoid equipment heating, reduce energy consumption, reduces power end fever, prolong
Long service life of equipment.
Claims (5)
1. a kind of 0.5V power supply, it is characterised in that: including synchronous buck type voltage-stablizer LTC3649, multiple double electricity in parallel
Pressure follows power supply, and the twin voltage follows the input electricity that the first voltage of power input is synchronous buck type voltage-stablizer LTC3649
Pressure, twin voltage follow the output voltage that the second voltage of power input is synchronous buck type voltage-stablizer LTC3649, multiple parallel connections
Twin voltage follows the output of power supply, and the output voltage with synchronous buck type voltage-stablizer LTC3649 is by tracking amplifier circuit knot
After structure after parallel connection, final output voltage is obtained.
2. 0.5V power supply according to claim 1, it is characterised in that: in tracking amplifier circuit configuration, including
The V of synchronous buck type voltage-stablizer LTC3649FBPin, output voltage and triode, the synchronous buck type voltage-stablizer LTC3649
VFBThe collector of pin connecting triode, the transmitting of the output voltage connecting triode of synchronous buck type voltage-stablizer LTC3649
Pole, the base stage of triode and multiple twin voltages follow the output-parallel of power supply.
3. 0.5V power supply according to claim 1, it is characterised in that: the circuit that the twin voltage follows power supply to export
In mechanism, including operational amplifier and triode, the end a of operational amplifier and the V of operational amplifier—The hair of end and triode
Emitter-base bandgap grading is connected, the first voltage successively V with current source reference power supply I and operational amplifier+End is connected, operational amplifier
The end b is connected between current source reference power supply I and resistance R, and second voltage is connected to the collector of triode, operational amplifier
Output end is connected to the base stage of triode, emitter output resistance R0Static output electric current is formed afterwards.
4. 0.5V power supply according to claim 3, it is characterised in that: be grounded after resistance R is in parallel with capacitor C.
5. 0.5V power supply according to claim 3, it is characterised in that: be arranged between the emitter and ground connection of triode
There is capacitor Cout。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821300492.6U CN208538009U (en) | 2018-08-13 | 2018-08-13 | A kind of 0.5V power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821300492.6U CN208538009U (en) | 2018-08-13 | 2018-08-13 | A kind of 0.5V power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208538009U true CN208538009U (en) | 2019-02-22 |
Family
ID=65377789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821300492.6U Expired - Fee Related CN208538009U (en) | 2018-08-13 | 2018-08-13 | A kind of 0.5V power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208538009U (en) |
-
2018
- 2018-08-13 CN CN201821300492.6U patent/CN208538009U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |