CN204314819U - A kind of cpu power circuit based on Godson 3B two-way server mainboard - Google Patents
A kind of cpu power circuit based on Godson 3B two-way server mainboard Download PDFInfo
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- CN204314819U CN204314819U CN201520021002.9U CN201520021002U CN204314819U CN 204314819 U CN204314819 U CN 204314819U CN 201520021002 U CN201520021002 U CN 201520021002U CN 204314819 U CN204314819 U CN 204314819U
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Abstract
The utility model provides a kind of cpu power circuit based on Godson 3B two-way server mainboard, belong to field of computer technology, its structure comprises power drives chip and power-switching circuit, power drives chip divides four circuitry phases that are connected, each circuitry phase is respectively arranged with PHASE control chip, PHASE control chip connects voltage stabilizing chip, and voltage stabilizing chip connects pwm chip; Four circuitry phases export four-way power supply change-over circuit respectively by 12V input circuit is corresponding respectively, export 1.15V, 1.18V, 1.2V, 1.8V voltage that CPU needs.Should be a kind of Godson 3B CPU power supply change-over circuit based on cpu power circuit of Godson 3B two-way server mainboard, be applicable to Godson two-way server mainboard, and meet two Godson 3B processors on server master board and normally to work required electric current and power.
Description
Technical field
The utility model relates to field of computer technology, specifically a kind of cpu power circuit based on Godson 3B two-way server mainboard.
Background technology
General, Godson 3B CPU power consumption is comparatively large, and kernel supply current is maximum can reach 35A, and transient changing is larger; Outer core supply current requires to reach more than 15A, and requires that power supply ripple is less, requires higher to power good.Traditional power-switching circuit is difficult to meet the supply current of Godson 3B and the requirement of power good.
Summary of the invention
Technical assignment of the present utility model solves the deficiencies in the prior art, provides a kind of cpu power circuit based on Godson 3B two-way server mainboard.
The technical solution of the utility model realizes in the following manner, should based on the cpu power circuit of Godson 3B two-way server mainboard, and its structure comprises power drives chip and power-switching circuit,
Power drives chip divides four circuitry phases that are connected, and each circuitry phase is respectively arranged with PHASE control chip, and PHASE control chip connects voltage stabilizing chip, and voltage stabilizing chip connects pwm chip; Four circuitry phases export four-way power supply change-over circuit respectively by 12V input circuit is corresponding respectively: the power-switching circuit that first via power-switching circuit is formed through metal-oxide-semiconductor and inductance exports 1.15V output circuit; The power-switching circuit that second road power-switching circuit is formed through metal-oxide-semiconductor and inductance exports 1.18V output circuit; The power-switching circuit that three-way power change-over circuit is formed through metal-oxide-semiconductor and inductance exports 1.2V output circuit; The power-switching circuit that four-way power supply change-over circuit is formed through metal-oxide-semiconductor and inductance exports 1.8V output circuit.
Power drives chip adopts ISL6334 power drives chip.
Voltage stabilizing chip adopts ISL6612 voltage stabilizing chip.
Pwm chip adopts ISL6612 power supply pwm chip.
Metal-oxide-semiconductor adopts SIR468DP metal-oxide-semiconductor.
12V power supply is that the output voltage of ATX power supply is input in power-switching circuit, power drives chip exports PHASE control signal to voltage stabilizing chip, and voltage stabilizing chip exports pwm control signal to 1.15V, 1.18V, 1.2V, 1.8V voltage exporting CPU needs after four road MOS and inductance.
The beneficial effect that the utility model is compared with prior art produced is:
Should be a kind of Godson 3B CPU power supply change-over circuit based on cpu power circuit of Godson 3B two-way server mainboard, be applicable to Godson two-way server mainboard, and meet two Godson 3B processors on server master board and normally to work required electric current and power.
ISL6334 power drives chip, ISL6612 power supply pwm chip and high-power MOS tube SIR468DP and high-power inductance should will be utilized based on the cpu power main circuit of Godson 3B two-way server mainboard, meet big current and low ripple requirement that CPU powers, while meeting size of current, the design that the metal-oxide-semiconductor that four tunnels separate separates also increases the area of dissipation of high-power components in circuit, is more conducive to the heat radiation of board.It is reasonable in design, and reliability is high, takies board area little, can be stable be that two processors are powered, meet the indices requirement of processor power supply.
Should reasonable based on the cpu power circuit design of Godson 3B two-way server mainboard, structure is simple, safe and reliable, easy to use, be easy to safeguard, have good value for applications.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model.
Mark in accompanying drawing represents respectively:
1, power drives chip, 2, PHASE control chip, 3, voltage stabilizing chip, 4, pwm chip, 5,12V input circuit, 6, metal-oxide-semiconductor, 7, inductance, 8,1.15V output circuit, 9,1.18V output circuit, 10,1.2V output circuit, 11,1.8V output circuit.
Embodiment
Below in conjunction with accompanying drawing, the cpu power circuit based on Godson 3B two-way server mainboard of the present utility model is described in detail below.
As shown in drawings, the cpu power circuit based on Godson 3B two-way server mainboard of the present utility model, its structure comprises power drives chip and power-switching circuit,
Power drives chip 1 point is connected four circuitry phases, and each circuitry phase is respectively arranged with PHASE and controls 2, core, PHASE control chip 2 connects voltage stabilizing chip 3, and voltage stabilizing chip 3 connects pwm chip 4; Four circuitry phases export four-way power supply change-over circuit respectively by 12V input circuit 5 is corresponding respectively: the power-switching circuit that first via power-switching circuit is formed through metal-oxide-semiconductor 6 and inductance 7 exports 1.15V output circuit 8; The power-switching circuit that second road power-switching circuit is formed through metal-oxide-semiconductor and inductance exports 1.18V output circuit 9; The power-switching circuit that three-way power change-over circuit is formed through metal-oxide-semiconductor and inductance exports 1.2V output circuit 10; The power-switching circuit that four-way power supply change-over circuit is formed through metal-oxide-semiconductor and inductance exports 1.8V output circuit 11.
Power drives chip 1 adopts ISL6334 power drives chip.
Voltage stabilizing chip 3 adopts ISL6612 voltage stabilizing chip.
Pwm chip 4 adopts ISL6612 power supply pwm chip.
Metal-oxide-semiconductor 6 adopts SIR468DP metal-oxide-semiconductor.
12V power supply is that the output voltage of ATX power supply is input in power-switching circuit, power drives chip exports PHASE control signal to voltage stabilizing chip, and voltage stabilizing chip exports pwm control signal to 1.15V, 1.18V, 1.2V, 1.8V voltage exporting CPU needs after four road MOS and inductance.
This main circuit will comprise ISL6334 power drives chip, ISL6612 power supply pwm chip and the part such as high-power MOS tube SIR468DP and high-power inductance composition.
According to the need for electricity of Godson 3B processor, CPU outer core voltage request ripple is little, peak inrush current 15A, and the power-switching circuit primarily of two-phase-region casting wherein and PWM controller composition realizes; The peak point current that CPU core voltage needs is comparatively large, is 35A to the maximum, and power supply needs obviously to become large with the raising electric current of CPU and clocked memory.Based on this characteristic, CPU core Power supply adopts four phase driving chip and four phase PWM chip and coordinates the power-switching circuit of the element compositions such as four road high-power MOSs and high-power inductance to meet the large requirement of instantaneous change of CPU electric current.While meeting size of current, the design that the metal-oxide-semiconductor that four tunnels separate separates also increases the area of dissipation of high-power components in circuit, is more conducive to the heat radiation of board.
Empirical tests, this circuit CPU frequency be 1.2Ghz, clocked memory be 533Mhz time, can stablize, safety, work efficiently.
12V power supply is that the output voltage of ATX power supply is input in power-switching circuit, driving chip exports PHASE control signal to voltage stabilizing chip, and voltage stabilizing chip exports pwm control signal to 1.15V, 1.18V, 1.2V, 1.8V voltage exporting CPU needs after four road MOS and inductance.
ATX power interface on server master board provides 12V, 3.3V, 5V and-12V powers, and the input voltage of this circuit is that 12V, 12V voltage is after this circuit, be converted to the core voltage that server CPU needs: kernel 1.15V, outer core 1.18V, the requirement of the power consumption needed for different voltage port and the noise to ripple, adopts different power drives chips and different PWM phase adjusted chips to realize, make CPU can steady operation in 1.2G dominant frequency, under clocked memory 533Mhz.
Should based on cpu power circuit application of Godson 3B two-way server mainboard in Godson 3B two-way 2U server master board, through checking, when two CPU and internal memory oepration at full load, work safety, stable, efficient.
Claims (5)
1. the cpu power circuit based on Godson 3B two-way server mainboard, it is characterized in that comprising power drives chip and power-switching circuit, power drives chip divides four circuitry phases that are connected, each circuitry phase is respectively arranged with PHASE control chip, PHASE control chip connects voltage stabilizing chip, and voltage stabilizing chip connects pwm chip; Four circuitry phases export four-way power supply change-over circuit respectively by 12V input circuit is corresponding respectively: the power-switching circuit that first via power-switching circuit is formed through metal-oxide-semiconductor and inductance exports 1.15V output circuit; The power-switching circuit that second road power-switching circuit is formed through metal-oxide-semiconductor and inductance exports 1.18V output circuit; The power-switching circuit that three-way power change-over circuit is formed through metal-oxide-semiconductor and inductance exports 1.2V output circuit; The power-switching circuit that four-way power supply change-over circuit is formed through metal-oxide-semiconductor and inductance exports 1.8V output circuit.
2. a kind of cpu power circuit based on Godson 3B two-way server mainboard according to claim 1, is characterized in that power drives chip adopts ISL6334 power drives chip.
3. a kind of cpu power circuit based on Godson 3B two-way server mainboard according to claim 1, is characterized in that voltage stabilizing chip adopts ISL6612 voltage stabilizing chip.
4. a kind of cpu power circuit based on Godson 3B two-way server mainboard according to claim 1, is characterized in that pwm chip adopts ISL6612 power supply pwm chip.
5. a kind of cpu power circuit based on Godson 3B two-way server mainboard according to claim 1, is characterized in that metal-oxide-semiconductor adopts SIR468DP metal-oxide-semiconductor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520021002.9U CN204314819U (en) | 2015-01-13 | 2015-01-13 | A kind of cpu power circuit based on Godson 3B two-way server mainboard |
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| CN201520021002.9U CN204314819U (en) | 2015-01-13 | 2015-01-13 | A kind of cpu power circuit based on Godson 3B two-way server mainboard |
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| CN204314819U true CN204314819U (en) | 2015-05-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111221399A (en) * | 2019-12-06 | 2020-06-02 | 北京和利时智能技术有限公司 | Loongson CPU-based peripheral system circuit and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111221399A (en) * | 2019-12-06 | 2020-06-02 | 北京和利时智能技术有限公司 | Loongson CPU-based peripheral system circuit and system |
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