CN109917888A - A kind of memory turns VPP_2V5 circuit and computer - Google Patents
A kind of memory turns VPP_2V5 circuit and computer Download PDFInfo
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- CN109917888A CN109917888A CN201910141072.0A CN201910141072A CN109917888A CN 109917888 A CN109917888 A CN 109917888A CN 201910141072 A CN201910141072 A CN 201910141072A CN 109917888 A CN109917888 A CN 109917888A
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- 230000015654 memory Effects 0.000 title claims abstract description 74
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 93
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- 230000000087 stabilizing effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
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- 230000004048 modification Effects 0.000 description 2
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- 238000001514 detection method Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The embodiment of the invention discloses a kind of memories to turn VPP_2V5 circuit and computer, and it includes input unit, control unit and output unit that memory, which turns VPP_2V5 circuit,；Control unit is transmitted to after the first voltage filtering that the input unit exports power module；Control unit receives the second voltage of power module output and filtering, starts and export output voltage when successively detecting second voltage and first voltage, and output unit generates VPP supply voltage and is transferred to memory after dividing to the output voltage.Due to being directly accessed first voltage and second voltage, reduce the control route of existing EN foot, avoid cumbersome control, it will not influence power consumption, reduce part of devices, cost can be saved again and can be reduced the space hold of pcb board, thus solve the problems, such as the existing complex circuit for turning VPP_2V5 circuit and part is more, cause pcb board size increase.
Description
Technical field
The present invention relates to electronic technology fields more particularly to a kind of memory to turn VPP_2V5 circuit and computer.
Background technique
From being born so far, evolution experienced from simple to complex, by rudimentary to advanced different phase, application computer
Also the full field such as education, medical treatment till now only is expanded from military affairs at that time, it produces deeply the every aspect of human society
Influence.With computer become increasingly popular and living standard improve, more and more consumers is to computer performance
It is required that also higher and higher.Memory is one of most important component part of computer, is the bridge linked up with CPU.Computer
The operation of all programs all be unable to do without memory, therefore the quality of memory signal quality directly affects the performance quality of memory, in turn
Influence the performance of complete machine.
Existing memory signal mainly includes three parts: VDDQ, VDDQ_VTT and VPP_2V5, existing to turn VPP_2V5
The circuit diagram of circuit is as shown in Figure 1.It is existing to turn in VPP_2V5 circuit, the EN foot of voltage stabilizing chip IC is controlled, letter is worked as
When number SLP_S4_N is low level, the input of EN foot is low level, and voltage stabilizing chip IC does not work.When signal SLP_S4_N is high electricity
Usually, the input of EN foot is high level, at this time when the voltage on VIN foot (PVIN1, PVIN2 and SVIN) is voltage stabilizing chip IC's
When within the scope of design requirement, voltage stabilizing chip IC work, VPP supply voltage Vout=(1+ (RP1/RP2)) × 0.6, wherein 0.6V
VPP supply voltage when being worked normally for voltage stabilizing chip IC inside FB foot, Vout, that is, expression+VPP_2V5 voltage.Pass through change
The voltage value of+the VPP_2V5 of design can be obtained in the value of resistance RP1 and resistance RP2.
But it is existing turn in VPP_2V5 circuit, due to big, the required electricity of the size using voltage stabilizing chip IC and inductance
The parts counts such as resistance, capacitor are more, the PCB space of occupancy also therefore increase, cause pcb board size increase, cause it is high-cost
Meanwhile the requirement to Layout (wiring) is also accordingly got higher.Also, due to increasing for parts count and type, it has not been convenient to factory
Production.In addition, turning the complex circuit of VPP_2V5 circuit, when engineer being caused to need to spend a large amount of at debug (debugging)
Between.
Summary of the invention
In view of the above technical problems, the embodiment of the invention provides a kind of memories to turn VPP_2V5 circuit and computer, with solution
The certainly existing complex circuit for turning VPP_2V5 circuit and part is more, cause pcb board size increase the problem of.
The embodiment of the present invention provides a kind of memory and turns VPP_2V5 circuit, connects memory and power module comprising input is single
Member, control unit and output unit；
Control unit is transmitted to after the first voltage filtering that the input unit exports power module；Control unit receives
The second voltage of power module output and filtering, starts when successively detecting second voltage and first voltage and to export output electric
Pressure, output unit generate VPP supply voltage and are transferred to memory after dividing to the output voltage；
Input unit connection power module and control unit, control unit connect power module, output unit and interior
It deposits.
Optionally, the memory turns in VPP_2V5 circuit, and the input unit includes first resistor, first capacitor,
Two capacitors and third capacitor；
One end of the first capacitor connects the first power end, one end of the second capacitor, one end of third capacitor, the first electricity
One end of resistance and control unit；The other end of first resistor connects control unit, the other end of first capacitor, the second capacitor it is another
The other end of one end and third capacitor is grounded.
Optionally, the memory turns in VPP_2V5 circuit, and described control unit includes power supply chip, second resistance,
Three resistance and the 4th capacitor；
The POK foot connection time series stereodata end of the power supply chip also passes through 3rd resistor connection VPP feeder ear；Electricity
The other end of the EN foot connection first resistor of source chip, one end of the VIN foot connection third capacitor of power supply chip and first resistor
One end；The CNTL foot of power supply chip connects second source end by second resistance, also passes through the 4th capacity earth；Power supply chip
FB foot and VOUT foot be all connected with output unit, the GND foot ground connection of power supply chip.
Optionally, the memory turns in VPP_2V5 circuit, and the output unit includes the 4th resistance, the 5th resistance, the
Five capacitors, the 6th capacitor, the 7th capacitor and the 8th capacitor；
One end connection VPP feeder ear, one end of the 5th capacitor and the VOUT foot of power supply chip of 4th resistance；4th
The other end of resistance connects the other end, one end of the 5th resistance and the FB foot of power supply chip of the 5th capacitor；The one of 6th capacitor
One end, one end of the 7th capacitor and one end of the 8th capacitor of the 5th capacitor of end connection；The other end, the 7th capacitor of 6th capacitor
The other end, the other end of the 8th capacitor and the other end of the 5th resistance be grounded.
Optionally, the memory turns in VPP_2V5 circuit, and the first resistor is pull-up resistor；First capacitor and
The capacitance of two capacitors is 10 μ F.
Optionally, the memory turns in VPP_2V5 circuit, the model UP0104PSUB of the power supply chip.
Optionally, the memory turns in VPP_2V5 circuit, and the resistance value of the 4th resistance is 22K Ω, the 5th resistance
Resistance value is 10K Ω.
Optionally, the memory turns in VPP_2V5 circuit, the 5th capacitor, the 6th capacitor, the 7th capacitor, the 8th
The capacitance of capacitor is respectively 33pF, 47 μ F, 47 μ F, 47 μ F.
Optionally, the memory turns in VPP_2V5 circuit, and the voltage value of the first voltage is 3V, second voltage
Voltage value is 5V.
Second aspect of the embodiment of the present invention provides a kind of computer, including a circuit board, is provided on the circuit board
Memory and power module, wherein also set up the memory on the circuit board and turn VPP_2V5 circuit, the memory turns VPP_
Memory described in 2V5 circuit connection and the power module；
The power module is sequentially output second voltage and first voltage sequentially to start memory and turn VPP_2V5 electricity
Road, memory turn VPP supply voltage needed for exporting memory after VPP_2V5 circuit start and are transferred to memory.
In technical solution provided in an embodiment of the present invention, computer includes that memory, power module and memory turn VPP_2V5 electricity
Road, it includes input unit, control unit and output unit that memory, which turns VPP_2V5 circuit,；The input unit is defeated to power module
Control unit is transmitted to after first voltage filtering out；Control unit receives the second voltage of power module output and filtering, first
After start and export output voltage when detecting second voltage and first voltage, output unit is raw after dividing to the output voltage
At VPP supply voltage and it is transferred to memory.Due to being directly accessed first voltage and second voltage, reduce the control of existing EN foot
Route processed avoids cumbersome control, will not influence power consumption, reduce part of devices, and can save cost can be reduced PCB again
The space hold of plate, thus solve the existing complex circuit for turning VPP_2V5 circuit and part is more, cause pcb board size increase
Big problem.
Detailed description of the invention
Fig. 1 is the existing circuit diagram for turning VPP_2V5 circuit.
Fig. 2 is the structural schematic diagram of computer in the embodiment of the present invention.
Fig. 3 is that memory turns control unit in VPP_2V5 circuit, card switch unit and earphone socket in the embodiment of the present invention
Circuit diagram.
Fig. 4 is the internal structure rough schematic view that memory turns power supply chip in VPP_2V5 circuit in the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.This hair
Embodiment in bright, those skilled in the art's every other embodiment obtained without creative efforts,
It shall fall within the protection scope of the present invention.
Referring to Fig. 2, computer provided in an embodiment of the present invention includes a circuit board (i.e. mainboard), set on the circuit board
It is equipped with memory and turns VPP_2V5 circuit 10, memory 20 and power module 30；The memory turns VPP_2V5 circuit 10 and connects in described
Deposit 20 and the power module 30.The power module 30 is sequentially output second voltage and first voltage sequentially to start
Memory turns VPP_2V5 circuit 10, and memory turns VPP supply voltage needed for exporting memory after VPP_2V5 circuit 10 starts and transmits
To memory.Wherein, memory turns the time series stereodata that VPP_2V5 circuit 10 also exports Vpp_PWROK signal for All other routes,
This is the prior art (i.e. Vpp_PWROK signal in Fig. 1), is not repeated herein.
It is to be appreciated that the computer is chosen as desktop computer；Memory turns VPP_2V5 circuit and is widely used, and may be used also
For LED, LCD etc. using the electronic product of memory, application market is very huge.
It includes input unit 110, control unit 120 and output unit 130 that the memory, which turns VPP_2V5 circuit 10,；It is described
Input unit 110 connects power module 30 and control unit 120, and control unit 120 connects power module 30, output unit 130
With memory 20.Control unit 120 is transmitted to after the first voltage filtering that the input unit 110 exports power module 30；Control
Unit 120 processed receives the second voltage that power module 30 exports and filtering, opens when successively detecting second voltage and first voltage
Output voltage is moved and exports, output unit 130 generates VPP supply voltage and is transferred to memory after dividing to the output voltage.
Also referring to Fig. 3, the input unit 110 includes first resistor R1, first capacitor C1, the second capacitor C2 and the
Three capacitor C3；One end of the first capacitor C1 connects the first power end+3VS, one end of the second capacitor C2, third capacitor C3
One end, one end of first resistor R1 and control unit 120；The other end of first resistor R1 connects control unit 120, first capacitor
The other end of the other end of C1, the other end of the second capacitor C2 and third capacitor C3 is grounded.
Wherein, the resistance value of the first resistor R1 is preferably 10K, is used as a pull-up resistor.First capacitor C1 (capacitance compared with
Good is 10 μ F), the second capacitor C2 (capacitance is preferably 10 μ F) and third capacitor C3 (capacitance is preferably 0.1 μ F) be to the first power end
The first voltage (such as 3V) of+3VS input is filtered, and the input of first voltage (such as 3V) is for starting the work of control unit 120.
Described control unit 120 includes power supply chip U1, second resistance R2,3rd resistor R3 (resistance value is preferably 47K Ω)
With the 4th capacitor C4；The POK foot of the power supply chip U1 connects time series stereodata end (the i.e. sequential logic of mainboard All other routes
Control terminal, this is the prior art), also pass through 3rd resistor R3 connection VPP feeder ear+VPP_2V5；The EN foot of power supply chip U1 connects
Connect the other end of first resistor R1, one end of the VIN foot connection third capacitor C3 of power supply chip U1 and one end of first resistor R1；
The CNTL foot of power supply chip U1 is grounded by second resistance R2 connection second source end+5VS, also by the 4th capacitor C4；Power supply
The FB foot and VOUT foot of chip U1 is all connected with output unit 130, the GND foot ground connection of power supply chip U1.
Wherein, the model of the power supply chip U1 is preferably UP0104PSUB.When EN foot and VIN foot are all high level,
Power supply chip U1 just works.The second voltage (such as 5V) inputted by second resistance R2 to second source end+5VS carries out current limliting,
It is transmitted to the CNTL foot of power supply chip U1 after filtering again by the 4th capacitor C4 (capacitance is preferably 0.1 μ F), is power supply chip U1
Internal control loop and transistor power supply.Second voltage (such as 5V) on CNTL foot must be than the first voltage on VIN foot (such as
It 3V) advances to and, its inside could work normally after such power supply chip U1 starting.The POK foot of power supply chip U1 is VPP power supply
The detecting foot of voltage (i.e. voltage on VPP feeder ear+VPP_2V5), when VPP supply voltage reaches the 92% of setting value (such as
It is high-impedance state when 2.3V).The impedance of PIN foot is high-impedance state, and high-impedance state is exactly that resistance is equivalent to infinity, can be done to a certain extent
Open circuit understands；Very little is influenced on previous stage circuit, does not generate electric current (unattenuated), also increases the anti-of chip to a certain extent
Voltge surge ability.
The output unit 130 includes the 4th resistance R4, the 5th resistance R5, the 5th capacitor C5, the 6th capacitor C6, the 7th electricity
Hold C7 and the 8th capacitor C8；The 4th resistance R4 one end connection VPP feeder ear+VPP_2V5, the 5th capacitor C5 one end and
The VOUT foot of power supply chip U1；The other end of 4th resistance R4 connects one end of the other end of the 5th capacitor C5, the 5th resistance R5
With the FB foot of power supply chip U1；One end of 6th capacitor C6 connects one end of the 5th capacitor C5, one end of the 7th capacitor C7 and the
One end of eight capacitor C8；The other end of 6th capacitor C6, the other end of the 7th capacitor C7, the 8th capacitor C8 the other end and the 5th
The other end of resistance R5 is grounded.
Wherein, by the 4th resistance R4, (resistance value is preferably the output voltage that its VOUT foot exports after power supply chip U1 work
22K Ω) and the 5th resistance R5 (resistance value is preferably 10K Ω) partial pressure VPP supply voltage (i.e. VPP feeder ear+VPP_ can be obtained
Voltage on 2V5), electric current is in 2A or so.5th capacitor C5 to the 8th capacitor C8 is played a filtering role, and capacitance is preferably respectively
33pF、47μF、47μF、47μF。
The working principle of the computer are as follows:
After powering on, power module 30, which first exports second voltage (such as 5V), to be made to become high electricity on the CNTL foot of power supply chip U1
It puts down, then export first voltage (such as 3V) to make the VIN foot of power supply chip U1 after the second capacitor C2 and third capacitor C3 filtering
High level, while first voltage (such as 3V) also pulls up the EN foot of power supply chip U1 as high level through first resistor R1.It is electric at this time
The voltage of source chip U1 work, the output of VOUT foot exports needed for memory after the 4th resistance R4 and the 5th resistance R5 partial pressure
VPP supply voltage (i.e. voltage on VPP feeder ear+VPP_2V5, this is preferably 2.5V).
The memory, which turns VPP_2V5 circuit, reduces the control route of EN foot, is directly connected to the first power end+3VS pull-up
To high level, and+3VS is that+3VSB is converted by the on-off action of MOSFET, could only be converted after powering, on
Electricity is that do not have+3VS.
+ 3VS is there are two types of source in the prior art, the first be using ATX power supply, ATX power supply have 12V, 5V, 3.3V (+
3VS and+3VSB).+ 3VSB is that ATX power supply electrifying just has, and+3VS is then that logic control has been used on ATX power supply, is only existed
Just have after ATX electric power starting.Second scheme is powered using adapter, only for electricity single such as 12V, 19V, is then led to
It crosses and is converted to+3VSB using corresponding IC (chip) ,+3VSB passes through a N MOSFET (such as MDV1525, MDU1514 etc.) again
It is converted to+3VS；Specifically: the grid of drain electrode the output+3VS, NMOSFET of source electrode the input+3VSB, NMOSFET of NMOSFET
Input the control signal+3VS_EN of pipe).+ 3VSB is also to power on just to have, and after+3VS is then unlatching, control signal+3VS_EN is logical
When to cross logic control be high level ,+3VSB is converted to+3VS by NMOSFET conducting).
Power supply chip U1 can just work after being switched in this way, avoid cumbersome control, will not influence power consumption, reduce
Part of devices can save cost again and can be reduced the space hold of pcb board.Simultaneously as having replaced existing chip, type is used
Number preferably UP0104PSUB power supply chip, constitute LDO (low dropout regulator) route, be thus not required to
Inductance in available circuit is wanted, further save cost and reduces the space hold of pcb board.
The power supply chip that the present embodiment uses is internally provided with the functions such as overheat protector, overcurrent protection, can pass through excess temperature
The functions such as protection, overcurrent protection can operate normally to protect the memory to turn VPP_2V5 circuit.As shown in figure 4, working as CNTL foot
Voltage arrive after, power supply chip U1 detects the voltage on its EN foot and VIN foot.When the voltage on EN foot is high level, VIN foot
On voltage input within the scope of sets requirement when (it is required that be 1.2~5.5V), power supply chip U1 work.The inside of FB foot at this time
Voltage is 0.8V, and VPP supply voltage is that the 4th resistance R4 connected by FB foot and the 5th resistance R5 divide to obtain.VPP power supply
Voltage VOUT is also the formula of the voltage on VPP feeder ear+VPP_2V5 are as follows:
VOUT=0.8V × (R4+R5)/R5.
The value of R4 and R5 can be directly changed according to different needs to obtain required voltage.Wherein A indicates that excess temperature is protected
It protects, judges whether that temperature is normal by internal logic social connections after detection power supply chip temperature.B indicates overcurrent protection, passes through inspection
Surveying output electric current, then logic social connections judge whether overcurrent.
In conclusion memory provided by the invention turns VPP_2V5 circuit and computer, replaced using power supply chip existing
Voltage stabilizing chip, and corresponding modification peripheral circuit, constitute LDO route, simplify the control route of EN foot and remove inductance, significantly
Number of parts is reduced, the space hold of pcb board is reduced to reduce the size and Layout difficulty of PCB, reduces costs
While also meet the requirement of corresponding Technology design, facilitate engineer debug and plant produced.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of memory turns VPP_2V5 circuit, memory and power module are connected, which is characterized in that single including input unit, control
Member and output unit；
Control unit is transmitted to after the first voltage filtering that the input unit exports power module；Control unit receives power supply
Module output second voltage and filtering, start and export output voltage when successively detecting second voltage and first voltage, it is defeated
Unit to generation VPP supply voltage after output voltage partial pressure and is transferred to memory out；
The input unit connection power module and control unit, control unit connect power module, output unit and memory.
2. memory according to claim 1 turns VPP_2V5 circuit, which is characterized in that the input unit includes the first electricity
Resistance, first capacitor, the second capacitor and third capacitor；
One end of the first capacitor connects the first power end, one end of the second capacitor, one end of third capacitor, first resistor
One end and control unit；The other end of first resistor connects control unit, the other end of the other end of first capacitor, the second capacitor
It is grounded with the other end of third capacitor.
3. memory according to claim 2 turns VPP_2V5 circuit, which is characterized in that described control unit includes power supply core
Piece, second resistance, 3rd resistor and the 4th capacitor；
The POK foot connection time series stereodata end of the power supply chip also passes through 3rd resistor connection VPP feeder ear；Power supply core
Piece EN foot connection first resistor the other end, power supply chip VIN foot connection third capacitor one end and first resistor one
End；The CNTL foot of power supply chip connects second source end by second resistance, also passes through the 4th capacity earth；The FB of power supply chip
Foot and VOUT foot are all connected with output unit, the GND foot ground connection of power supply chip.
4. memory according to claim 3 turns VPP_2V5 circuit, which is characterized in that the output unit includes the 4th electricity
Resistance, the 5th resistance, the 5th capacitor, the 6th capacitor, the 7th capacitor and the 8th capacitor；
One end connection VPP feeder ear, one end of the 5th capacitor and the VOUT foot of power supply chip of 4th resistance；4th resistance
The other end connect the 5th capacitor the other end, one end of the 5th resistance and the FB foot of power supply chip；One end of 6th capacitor connects
Connect one end, one end of the 7th capacitor and one end of the 8th capacitor of the 5th capacitor；The other end of 6th capacitor, the 7th capacitor it is another
The other end of one end, the other end of the 8th capacitor and the 5th resistance is grounded.
5. memory according to claim 2 turns VPP_2V5 circuit, which is characterized in that the first resistor is pull-up resistor；
First capacitor and the capacitance of the second capacitor are 10 μ F.
6. memory according to claim 3 turns VPP_2V5 circuit, which is characterized in that the model of the power supply chip
UP0104PSUB。
7. memory according to claim 4 turns VPP_2V5 circuit, which is characterized in that the resistance value of the 4th resistance is 22K
Ω, the resistance value of the 5th resistance are 10K Ω.
8. memory according to claim 4 turns VPP_2V5 circuit, which is characterized in that the 5th capacitor, the 6th capacitor,
7th capacitor, the 8th capacitor capacitance be respectively 33pF, 47 μ F, 47 μ F, 47 μ F.
9. memory according to claim 1 turns VPP_2V5 circuit, which is characterized in that the voltage value of the first voltage is
3V, the voltage value of second voltage are 5V.
10. a kind of computer, including a circuit board, memory and power module are provided on the circuit board, which is characterized in that also
The setting such as described in any item memories of claim 1-9 turn VPP_2V5 circuit；The memory turns described in VPP_2V5 circuit connection
Memory and the power module；
The power module is sequentially sequentially output second voltage and first voltage and turns VPP_2V5 circuit to start memory,
Memory turns VPP supply voltage needed for exporting memory after VPP_2V5 circuit start and is transferred to memory.
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| CN201910141072.0A CN109917888B (en) | 2019-02-26 | 2019-02-26 | Memory transfer VPP_2V5 circuit and computer |
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| CN201910141072.0A CN109917888B (en) | 2019-02-26 | 2019-02-26 | Memory transfer VPP_2V5 circuit and computer |
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| CN109917888B (en) | 2023-12-12 |
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