CN104953826A - Controller power supply as well as module and chip with same - Google Patents
Controller power supply as well as module and chip with same Download PDFInfo
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- CN104953826A CN104953826A CN201510444007.7A CN201510444007A CN104953826A CN 104953826 A CN104953826 A CN 104953826A CN 201510444007 A CN201510444007 A CN 201510444007A CN 104953826 A CN104953826 A CN 104953826A
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Abstract
The invention discloses a controller power supply and a module and a chip with the same. The controller power supply is used for converting a 24V input direct current into a plurality of direct currents being lower than 24 V, and outputting the direct currents being lower than 24V, wherein the voltage range of the input current is 17 to 30 V. The controller power supply comprises a pre-stage voltage converting circuit, a post-stage voltage converting circuit, a power supply state detection circuit, and a power supply state display circuit, wherein the pre-stage voltage converting circuit and the post-stage voltage converting circuit from a two-stage cascaded direct current conversion circuit; the pre-stage voltage converting circuit is connected with the power supply state detection circuit and the power supply state display circuit through the post-stage voltage converting circuit. Through two-stage cascaded direct current conversion, the output of high-precision and relatively low-ripple wave power supply voltage can be realized, and the accuracy of the output voltage is 0 to 0.06 percent. The controller power supply also can be used for detecting the state of the output power supply voltage. The invention further discloses the module and the chip which are provided with the controller power supply.
Description
Technical field
The present invention relates to a kind of power supply, particularly relate to a kind of controller power source and there is module and the chip of described controller power source.
Background technology
Power supply is as the source of all circuit energies, and the success or failure of the fine or not decision systems operation of its performance and reliability thereof, in IC circuit, also affect its life-span simultaneously.
A good Power Management Design needs it to provide continual and steady power supply supply, has higher power supply precision, less output ripple, and higher carrying load ability, also provides good circuit protection function simultaneously, comprises overvoltage, overload, the protection of overcurrent.
Summary of the invention
There is the defect that power supply cannot be powered continually and steadily in the power circuit that the present invention is directed to current controller, provides a kind of controller power source and have module and the chip of described controller power source.
Solution of the present invention is: a kind of controller power source, and it all exports lower than some direct currents of 24V for the input of 24V direct current being converted to; It comprises prime voltage conversion circuit (3), rear class voltage conversion circuit (4), power state detection circuit (5), power supply status display circuit (6); Prime voltage conversion circuit (3), rear class voltage conversion circuit (4) form two-level concatenation DC transfer circuit; Prime voltage conversion circuit (3) is connected with power state detection circuit (5), power supply status display circuit (6) respectively via rear class voltage conversion circuit (4);
Wherein: prime voltage conversion circuit (3) comprises P10 power-switching circuit (31), P5 power-switching circuit (32), P3V3 power-switching circuit (33), input power testing circuit (34), radiator fan power circuit (35); P10 power-switching circuit (31), P5 power-switching circuit (32), P3V3 power-switching circuit (33) realize logic voltage 10V, 5V, 3.3V conversion for rear class voltage conversion circuit (4) for the input of 24V direct current respectively, input power testing circuit (34) realizes the detection of 24V direct current input, and radiator fan power circuit (35) realizes power supply and the state-detection of the radiator fan power supply of controller according to the output of P3V3 power-switching circuit (33); Rear class voltage conversion circuit (4) comprises 1P5EXT & P5EXT power-switching circuit (40), P2V5 power-switching circuit (41), P1V8 power-switching circuit (42), P1V5 power-switching circuit (43), 1P1V2 power-switching circuit (44), P1V2 power-switching circuit (45), P1V05 power-switching circuit (46), P0V9 power-switching circuit (47), PCORE power-switching circuit (48); These power-switching circuits realize the conversion of the various module for power supply power supplys of the main control unit of controller according to logic voltage 10V, 5V, 3.3V of prime voltage conversion circuit (3); Power state detection circuit (5) is connected with rear class voltage conversion circuit (4) power supply status detecting described various module for power supply power supply; Power supply status display circuit (6) is connected the power supply status of the CPU showing described main control unit with PCORE power-switching circuit (48).
As the further improvement of such scheme, described controller power source also comprises over-voltage over-current protection circuit (2), and over-voltage over-current protection circuit (2) comprises transient voltage suppressor (21), Schottky rectifier five (213), positive high voltage power and electric current swap controller (212); Transient voltage suppressor (21) one end receives the input of 24V direct current, and transient voltage suppressor (21) other end is via Schottky rectifier five (213), positive high voltage power and electric current swap controller (212) output supply voltage signal P24_PS.
Further, the divider resistance one (312) that P10 power-switching circuit (31) comprises LTC3727 DC voltage changer and is electrically connected with LTC3727 DC voltage changer respectively, divider resistance two (311), soft start capacitor one (314), soft start capacitor two (315), top layer MOSFET mono-(316), bottom MOSFET mono-(317), top layer MOSFET bis-(318), bottom MOSFET bis-(319), current sense resistance one (3112), current sense resistance two (3111), reference voltage circuit one (3110), LTC3727 DC voltage changer receives power supply voltage signal P24_PS, exports 10V voltage signal P10 to PCORE power-switching circuit (48).
Again further, P5 power-switching circuit (32), P3V3 power-switching circuit (33) adopt 5V and 3.3V logic voltage change-over circuit jointly, the divider resistance three (322) that described 5V and 3.3V logic voltage change-over circuit adopts LTC1628 DC voltage changer and is electrically connected with LTC1628 DC voltage changer respectively, divider resistance four (321), soft start capacitor three (324), soft start capacitor four (325), top layer MOSFET tri-(326), bottom MOSFET tri-(327), top layer MOSFET tetra-(328), bottom MOSFET tetra-(329), current sense resistance three (3212), current sense resistance four (3211), LTC3727 DC voltage changer receives power supply voltage signal P24_PS, export 5V voltage signal P5 to 1P5EXT & P5EXT power-switching circuit (40), PCORE power-switching circuit (48), P1V5 power-switching circuit (43), P1V05 power-switching circuit (46), P1V8 power-switching circuit (42), 1P1V2 power-switching circuit (44), P1V2 power-switching circuit (45), power state detection circuit (5), also export 3.3V voltage signal P3V3 to radiator fan power circuit (35), PCORE power-switching circuit (48), P1V5 power-switching circuit (43), P1V05 power-switching circuit (46), P1V8 power-switching circuit (42), 1P1V2 power-switching circuit (44), P1V2 power-switching circuit (45), P0V9 power-switching circuit (47), P2V5 power-switching circuit (41), power state detection circuit (5), also output reference voltage 3.3V voltage signal REF_3V3 is to input power testing circuit (34), also output voltage signal P5A1 is to input power testing circuit (34), power state detection circuit (5).
Again further, the CPU power supply circuits that PCORE power-switching circuit (48) is described main control unit, it adopts MAX8770 power supply chip, 10V, 5V and 3.3V logic voltage is provided to MAX8770 power supply chip, by carrying out the digital quantity signal VID [0-6] of the CPU of the main control unit of self-controller, the output voltage signal PCORE of control MAX8770 power supply chip changes between 0 ~ 1.5V; MAX8770 power supply chip also exports the LED display lamp that detection signal PCORE_OK connects power supply status display circuit (6), and MAX8770 power supply chip also provides the detection interface VCCSENSE of the power supply signal of CPU, the detection interface VSSSENSE with reference to earth signal simultaneously.
P1V5 power-switching circuit (43), P1V05 power-switching circuit (46), P1V8 power-switching circuit (42) and 1P1V2 power-switching circuit (44) are powered for controller.The internal storage location that P0V9 power-switching circuit (47) is controller is powered, and adopts MAX1510 low-voltage linear voltage regulator, to DDR2 power supply circuits for 3.3V voltage; MAX1510 low-voltage linear voltage regulator input 1.8V voltage, 1.8V voltage transitions is become output signal P0V9, output signal P0V9_OK is used to indicate the output voltage of P0V9 power-switching circuit (47) state to power state detection circuit (5) simultaneously.
Preferably, power state detection circuit (5) comprise shunt regulator (51), voltage comparator (52), with door (53) or door (54); There is provided reference voltage REF_2V5 by shunt regulator (51), through over-voltage comparator (52), output signal POK with door (53) or door (54), be used to indicate power supply output state.
The present invention also provides a kind of controller power source module, and it adopts any one controller power source above-mentioned to design.Controller power source is designed to modular form, can realize installing in factory, the convenient transport of modularized design, use.
The present invention also provides a kind of controller power source chip, and it adopts any one controller power source above-mentioned to design.Controller power source is designed to chip form, not only can realize installing in factory, and convenient transport, use, also can realize miniaturization.
The present invention is designed by circuit protection, through two-level concatenation DC converting, can realize high accuracy and the output of less ripple power supplies voltage, also provide the detection to output supply voltage state simultaneously.
Accompanying drawing explanation
Fig. 1 is the general frame of controller power source.
Fig. 2 is the specific implementation block diagram of over-voltage over-current protection circuit 2 in Fig. 1.
Fig. 3 is the specific implementation block diagram of P10 power-switching circuit 31 in Fig. 1.
Fig. 4 is the specific implementation block diagram of P5 power-switching circuit 32 in Fig. 1, P3V3 power-switching circuit 33.
Fig. 5 is the specific implementation block diagram of input power testing circuit 34 in Fig. 1.
Fig. 6 is the specific implementation block diagram of radiator fan power circuit 35 in Fig. 1.
Fig. 7 is the specific implementation block diagram of 1P5EXT & P5EXT power-switching circuit 40 in Fig. 1.
Fig. 8 is the specific implementation block diagram of PCORE power-switching circuit 48 in Fig. 1.
Fig. 9 is the specific implementation block diagram of P1V5 power-switching circuit 43 in Fig. 1, P1V05 power-switching circuit 46.
Figure 10 is the specific implementation block diagram of P1V8 power-switching circuit 42 and 1P1V2 power-switching circuit 44 in Fig. 1.
Figure 11 is the specific implementation block diagram of P1V2 power-switching circuit 45 in Fig. 1.
Figure 12 is the specific implementation block diagram of P0V9 power-switching circuit 47 in Fig. 1.
Figure 13 is the specific implementation block diagram of P2V5 power-switching circuit 41 in Fig. 1.
Figure 14 is the specific implementation block diagram of power state detection circuit 5 in Fig. 1.
Figure 15 is the output voltage figure of P10.
Figure 16 is the output voltage figure of P5.
Figure 17 is the output voltage figure of P3V3.
Figure 18 is the output voltage figure of P5A1.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The voltage signal numerical value described in the present invention is theoretical values; In the present invention unless stated otherwise, each voltage signal digitally common port be M (not shown).
Refer to Fig. 1, the controller power source of the present embodiment is used for the input of 24V direct current to be converted to all to export lower than some direct currents of 24V.Controller power source comprises over-voltage over-current protection circuit 2, prime voltage conversion circuit 3, rear class voltage conversion circuit 4, power state detection circuit 5, power supply status display circuit 6.
Prime voltage conversion circuit 3, rear class voltage conversion circuit 4 form two-level concatenation voltage conversion circuit; Power state detection circuit 5, power supply status display circuit 6 form power sense circuit.Described controller power source is the controller control unit power supply design of superior performance; its input voltage is first through over-voltage over-current protection circuit 2; realize degree of precision by two-level concatenation voltage conversion circuit again, the power supply of less ripple exports, and has power sense circuit simultaneously.
Fig. 1 is the general frame of whole system power supply and controller power source, and 24V direct current is input as outside and provides 24V DC power supply, and over-voltage over-current protection circuit 2 realizes input power power and current limit protection also output supply voltage signal P24_PS.
Prime voltage conversion circuit 3 comprises P10 power-switching circuit 31, P5 power-switching circuit 32, P3V3 power-switching circuit 33, input power testing circuit 34, radiator fan power circuit 35.P10 power-switching circuit 31, P5 power-switching circuit 32, P3V3 power-switching circuit 33 can realize logic voltage 10V, 5V, 3.3V conversion for rear class voltage conversion circuit 4 for power supply voltage signal P24_PS respectively, input power testing circuit 34 can realize the detection of power supply voltage signal P24_PS, and radiator fan power circuit 35 can realize power supply and the state-detection of the radiator fan power supply of controller according to the output of P3V3 power-switching circuit 33.P10, P5, P3V3 are the general descriptor of those skilled in the art, characterize 10V, 5V, 3.3V, below occur that similar general descriptor will no longer make an explanation.
Prime voltage conversion circuit 3 converts the 24V power supply of input and power supply voltage signal P24_PS to 10V, 5V, 3.3V logic voltage and is used for rear class voltage conversion circuit 4, rear class voltage conversion circuit 4 realizes the conversion of the various supply voltages of controller, for the power supply of each module of controller main control unit and power state detection circuit 5 and power supply status display circuit 6, rear class voltage conversion circuit 4 realizes the conversion of the modules power supply of the control unit of controller, owing to have employed two-level concatenation conversion, achieve high accuracy and the low ripple of power supply output.
Rear class voltage conversion circuit 4 comprises 1P5EXT & P5EXT power-switching circuit 40, P2V5 power-switching circuit 41, P1V8 power-switching circuit 42, P1V5 power-switching circuit 43,1P1V2 power-switching circuit 44, P1V2 power-switching circuit 45, P1V05 power-switching circuit 46, P0V9 power-switching circuit 47, PCORE power-switching circuit 48.Wherein, PCORE refers to that CPU powers, and the CPU referring to controller main control unit in the present embodiment powers.Rear class voltage conversion circuit 4 can realize the conversion of final various supply voltage, for the power supply of each module of controller main control unit and the detection of power supply state and display circuit.Please refer to follow-up P2V5=2.5V, 1P5EXT & P5EXT is 5v, because purposes is different, wherein hat 1 before 1 group, to show difference.Wherein 1P5EXT and 1MEXT is 1 pair of 5v signal; P5EXT and M5EXT is 1 pair of 5v signal; 1MEXT and M5EXT is digitally power supply common port.The explanation of 1P1V2 & P1V2 is the same similar.The digitally power supply common port of 1P1V2 & P1V2 is M.
Incorporated by reference to Fig. 2, over-voltage over-current protection circuit 2 is for input power power and current limit protection, and input 24V direct current, exports or 24V direct current.In the present embodiment; over-voltage over-current protection circuit 2 receives the input of 24V direct current; export 7 signals to be respectively P24_IO1, P24_IO2, P24_1, P24_OPT, P24_DSA, P5_OK_SEQ, P1V8_1P1V2_OK and to send controller to, and also export a power supply voltage signal P24_PS to follow-up prime voltage conversion circuit 3.P24_IO1, P24_IO2, P24_1, P24_OPT, P24_DSA are 24V voltage; P5_OK_SEQ, P1V8_1P1V2_OK are state detection signals.
Particularly, over-voltage over-current protection circuit 2 comprises transient voltage suppressor 21, fuse 1, fuse 2 23, fuse 3 24, Schottky rectifier 1, Schottky rectifier 2 26, Schottky rectifier 3 27, Schottky rectifier 4 214, Schottky rectifier 5 213, magnetic bead filter 1, magnetic bead filter 2 29, mains switch 210, positive high voltage power and electric current swap controller 212, low-power univoltage comparator 211.Over-voltage over-current protection circuit 2 passes through transient voltage suppressor, Schottky rectifier and power and demand limiter, the defencive function of realizing circuit.
Transient voltage suppressor 21 one end receives the input of 24V direct current, and transient voltage suppressor 21 other end outputs signal P24_IO1 via fuse 3 24, Schottky rectifier 1; Transient voltage suppressor 21 other end also outputs signal P24_IO2 via fuse 2 23, Schottky rectifier 2 26; Transient voltage suppressor 21 other end also outputs signal P24_1 via fuse 1, Schottky rectifier 3 27, magnetic bead filter 1; Transient voltage suppressor 21 other end also outputs signal P24_OPT via fuse 1, Schottky rectifier 3 27, magnetic bead filter 1, mains switch 210; Transient voltage suppressor 21 other end also outputs signal P24_DSA via fuse 1, Schottky rectifier 4 214, magnetic bead filter 2 29; Transient voltage suppressor 21 other end is also via Schottky rectifier 5 213, positive high voltage power and electric current swap controller 212 output supply voltage signal P24_PS; Transient voltage suppressor 21 other end also outputs signal P5_OK_SEQ and P1V8_1P1V2_OK via Schottky rectifier 5 213, positive high voltage power and electric current swap controller 212, low-power univoltage comparator 211.
Direct current 24V input power by transient voltage suppressor 21 as transient voltage suppressor SM15T, can to overshoot, the voltage of instantaneous variation suppresses.Three fuse UMT250 can prevent current overload.Schottky rectifier 1, Schottky rectifier 2 26 can be 12CWQ03FN, and signal P24_IO1 and P24_IO2 is the power supply that digital quantity output circuit power supply signal can be used for the digital quantity output circuit of the main control unit of controller.Schottky rectifier 3 27 can be SS24 Schottky diode, can realize 40V2A rectification restriction effect, and outputing signal P24_1, signal P24_1 through magnetic bead filter 1 is that radiator fan power supply signal is for radiator fan power supply.Output signal P24_OPT through mains switch 210 (can be mains switch BTS4141N) in addition, signal P24_OPT is that palette signal is for palette.Signal P24_DSA after Schottky rectifier 4 214 and magnetic bead filter 2 29, signal P24_DSA are for driving bus-powered signal.The signal of 24V direct current input is through Schottky rectifier 5 213 (can be Schottky rectifier MBRD1060), and positive high voltage power and current limit controller 12 output supply voltage signal P24_PS are used for the input power of 10V, 5V, 3.3V power-switching circuit of follow-up prime voltage conversion circuit 3.
Receive the power supply voltage signal P24_PS from over-voltage over-current protection circuit 2 incorporated by reference to Fig. 3, P10 power-switching circuit 31, export 3 signals and be respectively P10, FB_P10, XSD_PS.Signal P10 sends PCORE power-switching circuit 48 to.Signal FB_P10 is internal control signal, for the monitoring of 10V voltage status, sends power state detection circuit 5 to.Follow-up FB_P** monitors for * * voltage status.XSD_PS is that the edge (rising edge and trailing edge) according to XDSAVE changes and the internal control signal of generation, sends P5 power-switching circuit 32, P3V3 power-switching circuit 33 and radiator fan power circuit 35 respectively to.
P10 power-switching circuit 31 comprises: electric pressure converter 1; And the divider resistance 1, divider resistance 2 311, soft start capacitor 1, soft start capacitor 2 315, top layer MOSFET 1, bottom MOSFET 1, top layer MOSFET 2 318, bottom MOSFET 2 319, current sense resistance 1, current sense resistance 2 3111, the reference voltage circuit 1 that are electrically connected with electric pressure converter 1 respectively.
Electric pressure converter 1 receives power supply voltage signal P24_PS, exports 3 signals P10, FB_P10, XSD_PS.P10 power-switching circuit 31 is 10V logic voltage change-over circuit.Electric pressure converter 1 adopts LTC3727 DC voltage changer, by arranging two divider resistances (divider resistance 1, divider resistance 2 311), and two current sense resistance (current sense resistance 1, current sense resistance 2 3111), the two-way controller of electric pressure converter 1 adds top layer and bottom MOSFET (top layer MOSFET 1, bottom MOSFET 1, top layer MOSFET 2 318, bottom MOSFET 2 319) respectively, be connected in parallel, achieve 10V logic voltage eventually and export; Simultaneously by adding that two electric capacity (soft start capacitor 1, soft start capacitor 2 315) can realize soft start function; Wherein P10 voltage rating is 10.0V, maximum output current 7.6A, and after maximum average current 3.9A, 24V direct-current input power supplying disconnects, maximum average current is 2.3A; Signal XSD_PS, FB_P10 of exporting can be used for the detection of the power supply status of P10 power-switching circuit 31.
Adopt the output of same circuit realiration 5V and 3.3V incorporated by reference to Fig. 4, P5 power-switching circuit 32, P3V3 power-switching circuit 33, this circuit is 5V and 3.3V logic voltage change-over circuit.The design concept of P10 power-switching circuit 31, P5 power-switching circuit 32, these three power-switching circuits of P3V3 power-switching circuit 33 is roughly the same, difference is: the electric pressure converter 2 323 of 5V and 3.3V logic voltage change-over circuit adopts LTC1628 DC voltage changer, and does not have the reference voltage circuit 3110 of P10 power-switching circuit 31.
Divider resistance 3 322, divider resistance 4 321, soft start capacitor 3 324, soft start capacitor 4 325, top layer MOSFET 3 326, bottom MOSFET 3 327, top layer MOSFET 4 328, bottom MOSFET 4 329, current sense resistance 3 3212, current sense resistance 4 3211 that described 5V and 3.3V logic voltage change-over circuit adopts LTC1628 DC voltage changer and is electrically connected with LTC1628 DC voltage changer respectively.LTC3727 DC voltage changer receives power supply voltage signal P24_PS, exports 5V voltage signal P5 to 1P5EXT & P5EXT power-switching circuit 40, PCORE power-switching circuit 48, P1V5 power-switching circuit 43, P1V05 power-switching circuit 46, P1V8 power-switching circuit 42,1P1V2 power-switching circuit 44, P1V2 power-switching circuit 45, power state detection circuit 5; Also export 3.3V voltage signal P3V3 to radiator fan power circuit 35, PCORE power-switching circuit 48, P1V5 power-switching circuit 43, P1V05 power-switching circuit 46, P1V8 power-switching circuit 42,1P1V2 power-switching circuit 44, P1V2 power-switching circuit 45, P0V9 power-switching circuit 47, P2V5 power-switching circuit 41, power state detection circuit 5; Also output reference voltage 3.3V voltage signal REF_3V3 is to input power testing circuit 34; Also output voltage signal P5A1 is to input power testing circuit 34, power state detection circuit 5.Voltage signal P5A1: internal control 5V signal, in order to be different from P5, therefore called after P5A1, be that the edge (rising edge and trailing edge) according to P24_PS changes and the internal control signal of generation.
That is the electric pressure converter 2 323 of 5V and 3.3V logic voltage change-over circuit adopts LTC1628 DC voltage changer, by arranging two divider resistances, and two current sense resistance, the two-way controller of electric pressure converter 2 323 adds top layer and bottom MOSFET respectively, can realize the output of required direct voltage; Simultaneously by adding that two electric capacity can realize soft start function; Wherein P5 voltage rating is 5.1V, maximum output current 8.2A, and after maximum average current 3.3A, 24V direct-current input power supplying disconnects, maximum average current is 2.6A; P3V3 voltage rating is 3.3V, maximum output current 6.8A, and after maximum average current 3.8A, 24V direct-current input power supplying disconnects, maximum average current is 2.3A; Output signal XSD_PS, XSD_P3V3, FB_P5, P5_SENSE, FB_P3V3, P3V3_SENSE can be used for the detection of the power supply status of 5V and 3.3V logic voltage change-over circuit; 5V and 3.3V logic voltage change-over circuit can provide 3.3V reference voltage to export REF_3V3.
Incorporated by reference to Fig. 5, input power testing circuit 34 adopts the voltage comparator 341 of simple comparing function, as LM339 voltage comparator, by divider resistance, (figure does not show, can select) the reference voltage 1.24V and the power supply voltage signal P24_PS that provide with reference voltage circuit 2 342 (can be TLV431 reference voltage chip) compare, and output signal XDSAVE to 1P5EXT & P5EXT power-switching circuit 10 and signal XSD_PS are to the measuring ability of controller realization to input supply voltage.Signal XDSAVE is that the edge (rising edge and trailing edge) according to P24_PS changes and the internal control signal of generation.
Incorporated by reference to Fig. 6, radiator fan power circuit 35 object is the power detecting of cooling fan, uses controller as 74HC423D controller: the monostable flipflop of the Retargetable compiler that band resets.To power 3.3V (meeting 3.3V voltage signal P3V3) to 74HC423D controller, and to fan for P24_FAN power supply (other power supply source), the detection to fan-status can be realized, export fan power supply failure signal FANFAIL, fan-status detection signal DETECT_FAN to controller.
Incorporated by reference to Fig. 7,1P5EXT & P5EXT power-switching circuit 40 be fieldbus Power supply design, comprise two voltage changers, 404,402 and two transformers 403,401.Two voltage changers 404,402 adopt LM2733 voltage changer, and two transformers 403,401 adopt T60402 transformer, convert input signal 5V (meeting 5V voltage signal P5) to needed for fieldbus power supply P5EXT and 1P5EXT.This power supply precision can reach 5%, ripple 50mV, maximum output current 0.22A, maximum average current 0A, minimum power down time 3ms after maximum average current 0.14A, 24V disconnect.
Voltage changer 404 and transformer 403 adopt the 5V voltage signal P5 of P10 power-switching circuit 31, output signal P5EXT and M5EXT.Voltage changer 402 and transformer 401 adopt the signal XDSAVE of input power testing circuit 34, output signal 1P5EXT and 1MEXT.
Be controller control unit CPU power supply circuits incorporated by reference to Fig. 8, PCORE power-switching circuit 48, comprise electric pressure converter three, the special power supply chip of CPU can be adopted, as MAX8770 power supply chip.10V, 5V and 3.3V logic voltage is provided to MAX8770 power supply chip, by carrying out the digital quantity signal VID [0-6] of the CPU of the main control unit of self-controller, control MAX8770 power supply chip exports and changes between 0 ~ 1.5V, normally to work and dormancy reduces the object of power consumption to realize CPU.The output signal of MAX8770 power supply chip: PCORE, PCORE_OK, VCCSENSE, VSSSENSE.
Cpu power exports and well connects the LED display lamp of power supply status display circuit 6 intuitively to show CPU power supply state by detection signal PCORE_OK, and MAX8770 power supply chip also provides the power supply of CPU and detection interface VCCSENSE, the VSSSENSE with reference to earth signal simultaneously; Power supply signal PCORE rated value when CPU normally works is 1.25V, precision can reach 1.5%, typical ripple 10mV, maximum output current 41A, maximum average current 20.5A, maximum average current after 24V direct current supply disconnects is 20.5A, minimum power down time 3ms, minimum restoring time 40ms.
P1V5 power-switching circuit 43, P1V05 power-switching circuit 46 adopt same change-over circuit, as shown in Figure 9: controller control unit north and south bridge voltage change-over circuit.North and south bridge voltage change-over circuit is substantially identical with 5V and the 3.3V logic voltage change-over circuit of Fig. 4, difference is: the electric pressure converter 4 433 that north and south bridge voltage change-over circuit adopts adopts the LTC3850 DC voltage changer of integrated two out-phase work step-downs, by arranging two divider resistances, and two current sense resistance, the two-way controller of electric pressure converter 4 433 adds top layer and bottom MOSFET respectively, can realize the output of required direct voltage; Simultaneously by adding that two electric capacity can realize soft start function; Wherein P1V5 voltage is powered for south bridge circuit, and rated value is 1.5V, and precision can reach 5%, typical ripple 15mV, maximum output current 4.8A, maximum average current 3.0A, after 24V direct-current input power supplying disconnects, maximum average current is 3.0A, minimum power down time 3ms, minimum restoring time 40ms; P1V05 voltage is used for north bridge circuit and powers, and rated value is 1.05V, and precision can reach 5%, typical ripple 10mV, maximum output current 4.8A, maximum average current 2.5A, after 24V direct-current input power supplying disconnects, maximum average current is 2.5A, minimum power down time 3ms, minimum restoring time 40ms; Output signal XSD_P1V05_P1V5, P1V05_P1V5_OK, FB_P1V5, FB_P1V05 can be used for the detection of this change-over circuit power supply status.
P1V8 power-switching circuit 42 and 1P1V2 power-switching circuit 44 adopt same change-over circuit, as shown in Figure 10: controller control unit DDR2-RAM, SOC and CPU core voltage change-over circuit.Core voltage change-over circuit is identical with north and south bridge voltage converting circuit structure, core voltage change-over circuit adopts the LTC3850 DC voltage changer of integrated two out-phase work step-downs, by arranging two divider resistances, and two current sense resistance, the two-way controller of core voltage change-over circuit adds top layer and bottom MOSFET respectively, can realize the output of required direct voltage; Simultaneously by adding that two electric capacity can realize soft start function.
But the output signal of core voltage change-over circuit is different, wherein P1V8 voltage is used for DDR2-RAM circuit supply, rated value is 1.8V, precision can reach 5%, typical ripple 20mV, maximum output current 3.3A, maximum average current 2.5A, after 24V direct-current input power supplying disconnects, maximum average current is 2.5A, minimum power down time 3ms, minimum restoring time 40ms; 1P1V2 voltage is used for SOC and cpu circuit is powered, and rated value is 1.2V, and precision can reach 5%, typical ripple 20mV, maximum output current 2.75A, maximum average current 1.1A, after 24V direct-current input power supplying disconnects, maximum average current is 1.1A, minimum power down time 3ms, minimum restoring time 40ms; Output signal XSD_P1V8, XSD_1P1V2, P1V8_1P1V2_OK, FB_P1V8, FB_1P1V2 can be used for the detection of this change-over circuit power supply status.
Be Ethernet, north bridge and CPU core power supply change-over circuit incorporated by reference to Figure 11, P1V2 power-switching circuit 45.Employing is fixed or adjustable frequency synchronous rectification voltage-dropping type ST1S06 switching regulator completes this translation function, 5V and 3.3V logic voltage is provided to core power supply change-over circuit, P1V2 Power convert is realized by divider resistance, its rated value is 1.2V, precision 5%, typical ripple 20mV, maximum output current 0.85A, maximum average current 0.65A, maximum average current after 24V direct current disconnects is 0.65A, minimum power down time 3ms, minimum restoring time 40ms, provide the detection of FB_P1V2 signal realization to power supply status simultaneously.
Incorporated by reference to the main control unit DDR2 power supply circuits that Figure 12, P0V9 power-switching circuit 47 is controller.Adopt MAX1510 low-voltage linear voltage regulator, to DDR2 power supply circuits for 3.3V voltage.MAX1510 low-voltage linear voltage regulator input 1.8V voltage, 1.8V is converted to signal P0V9, signal P0V9 rated value is 0.9V, precision 4.5%, typical ripple 10mV, maximum output current 1.25A, maximum average current after maximum average current 0.4A, 24V direct current disconnects is 0.4A, minimum power down time 3ms, minimum restoring time 40ms, outputs signal the state that P0V9_OK and FB_P0V9 can be used for the output voltage indicating P0V9 power-switching circuit 47 simultaneously.
Be controller control unit mainboard and local area network (LAN) power supply circuit incorporated by reference to Figure 13, P2V5 power-switching circuit 41.Adopt linear voltage regulator MAX8770 will input 3.3V voltage, convert P2V5 to, power supply status display P2V5_OK is provided simultaneously; P2V5 source nominal value is 2.5V, precision 5%, typical ripple 30mV, maximum output current 0.65A, and the maximum average current after maximum average current 0.5A, 24V direct current disconnects is 0.5A, minimum power down time 3ms, minimum restoring time 40ms.
Incorporated by reference to Figure 14, power state detection circuit 5 is controller control unit power supply state detection circuit.Reference voltage REF_2V5 is provided by shunt regulator 51 (can be TLV431 shunt regulator), through over-voltage comparator 52 (can be LM339 voltage comparator), with door 53 (can be 74AHC08 and door), or door 54 (can be 74AHC32 or door) outputs signal POK, is used to indicate power supply output state.Power state detection circuit 5, by voltage comparator 52 and gate, detects the power supply exported, can judge power supply output state information.
The present invention is designed by circuit protection, through two-level concatenation DC converting, can realize wide range input high accuracy and the output of less ripple voltage, also provide the detection to output supply voltage state simultaneously.The part record sheet of TPR3010S stabilized voltage power supply (0 ~ 30V) to power supply test of the present invention applied by following table 1 and table 2.
Table 1
Table 2
Each output voltage that P10, P5, P3V3, P5A1 are corresponding illustrates as Figure 15 to Figure 18.
When P24_PS voltage range 30V ~ 21V (true want much accurate, value like this, for explanation input voltage bandwidth very large), between each output voltage error 0 ~ 0.06%, output accuracy is very high.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a controller power source, it all exports lower than some direct currents of 24V for the input of 24V direct current being converted to; It is characterized in that: it comprises prime voltage conversion circuit (3), rear class voltage conversion circuit (4), power state detection circuit (5), power supply status display circuit (6); Prime voltage conversion circuit (3), rear class voltage conversion circuit (4) form two-level concatenation DC transfer circuit; Prime voltage conversion circuit (3) is connected with power state detection circuit (5), power supply status display circuit (6) respectively via rear class voltage conversion circuit (4);
Wherein: prime voltage conversion circuit (3) comprises P10 power-switching circuit (31), P5 power-switching circuit (32), P3V3 power-switching circuit (33), input power testing circuit (34), radiator fan power circuit (35); P10 power-switching circuit (31), P5 power-switching circuit (32), P3V3 power-switching circuit (33) realize logic voltage 10V, 5V, 3.3V conversion for rear class voltage conversion circuit (4) for the input of 24V direct current respectively, input power testing circuit (34) realizes the detection of 24V direct current input, and radiator fan power circuit (35) realizes power supply and the state-detection of the radiator fan power supply of controller according to the output of P3V3 power-switching circuit (33);
Rear class voltage conversion circuit (4) comprises 1P5EXT & P5EXT power-switching circuit (40), P2V5 power-switching circuit (41), P1V8 power-switching circuit (42), P1V5 power-switching circuit (43), 1P1V2 power-switching circuit (44), P1V2 power-switching circuit (45), P1V05 power-switching circuit (46), P0V9 power-switching circuit (47), PCORE power-switching circuit (48); These power-switching circuits realize the conversion of the various module for power supply power supplys of the main control unit of controller according to logic voltage 10V, 5V, 3.3V of prime voltage conversion circuit (3);
Power state detection circuit (5) is connected with rear class voltage conversion circuit (4) power supply status detecting described various module for power supply power supply;
Power supply status display circuit (6) is connected the power supply status of the CPU showing described main control unit with PCORE power-switching circuit (48).
2. controller power source as claimed in claim 1, it is characterized in that: described controller power source also comprises over-voltage over-current protection circuit (2), over-voltage over-current protection circuit (2) comprises transient voltage suppressor (21), Schottky rectifier five (213), positive high voltage power and electric current swap controller (212); Transient voltage suppressor (21) one end receives the input of 24V direct current, and transient voltage suppressor (21) other end is via Schottky rectifier five (213), positive high voltage power and electric current swap controller (212) output supply voltage signal P24_PS.
3. controller power source as claimed in claim 2, it is characterized in that: the divider resistance one (312) that P10 power-switching circuit (31) comprises LTC3727 DC voltage changer and is electrically connected with LTC3727 DC voltage changer respectively, divider resistance two (311), soft start capacitor one (314), soft start capacitor two (315), top layer MOSFET mono-(316), bottom MOSFET mono-(317), top layer MOSFET bis-(318), bottom MOSFET bis-(319), current sense resistance one (3112), current sense resistance two (3111), reference voltage circuit one (3110), LTC3727 DC voltage changer receives power supply voltage signal P24_PS, exports 10V voltage signal P10 to PCORE power-switching circuit (48).
4. controller power source as claimed in claim 3, is characterized in that: P5 power-switching circuit (32), P3V3 power-switching circuit (33) adopt 5V and 3.3V logic voltage change-over circuit jointly, the divider resistance three (322) that described 5V and 3.3V logic voltage change-over circuit adopts LTC1628 DC voltage changer and is electrically connected with LTC1628 DC voltage changer respectively, divider resistance four (321), soft start capacitor three (324), soft start capacitor four (325), top layer MOSFET tri-(326), bottom MOSFET tri-(327), top layer MOSFET tetra-(328), bottom MOSFET tetra-(329), current sense resistance three (3212), current sense resistance four (3211), LTC3727 DC voltage changer receives power supply voltage signal P24_PS, export 5V voltage signal P5 to 1P5EXT & P5EXT power-switching circuit (40), PCORE power-switching circuit (48), P1V5 power-switching circuit (43), P1V05 power-switching circuit (46), P1V8 power-switching circuit (42), 1P1V2 power-switching circuit (44), P1V2 power-switching circuit (45), power state detection circuit (5), also export 3.3V voltage signal P3V3 to radiator fan power circuit (35), PCORE power-switching circuit (48), P1V5 power-switching circuit (43), P1V05 power-switching circuit (46), P1V8 power-switching circuit (42), 1P1V2 power-switching circuit (44), P1V2 power-switching circuit (45), P0V9 power-switching circuit (47), P2V5 power-switching circuit (41), power state detection circuit (5), also output reference voltage 3.3V voltage signal REF_3V3 is to input power testing circuit (34), also output voltage signal P5A1 is to input power testing circuit (34), power state detection circuit (5).
5. controller power source as claimed in claim 4, it is characterized in that: the CPU power supply circuits that PCORE power-switching circuit (48) is described main control unit, it adopts MAX8770 power supply chip, 10V, 5V and 3.3V logic voltage is provided to MAX8770 power supply chip, by carrying out the digital quantity signal VID [0-6] of the CPU of the main control unit of self-controller, the output voltage signal PCORE of control MAX8770 power supply chip changes between 0 ~ 1.5V; MAX8770 power supply chip also exports the LED display lamp that detection signal PCORE_OK connects power supply status display circuit (6), and MAX8770 power supply chip also provides the detection interface VCCSENSE of the power supply signal of CPU, the detection interface VSSSENSE with reference to earth signal simultaneously.
6. controller power source as claimed in claim 5, it is characterized in that: P1V5 power-switching circuit (43), P1V05 power-switching circuit (46), P1V8 power-switching circuit (42) and 1P1V2 power-switching circuit (44) are powered for controller, the internal storage location that P0V9 power-switching circuit (47) is controller is powered, adopt MAX1510 low-voltage linear voltage regulator, to DDR2 power supply circuits for 3.3V voltage; MAX1510 low-voltage linear voltage regulator input 1.8V voltage, 1.8V voltage transitions is become output signal P0V9, output signal P0V9_OK is used to indicate the output voltage of P0V9 power-switching circuit (47) state to power state detection circuit (5) simultaneously.
7. controller power source as claimed in claim 6, is characterized in that: power state detection circuit (5) comprise shunt regulator (51), voltage comparator (52), with door (53) or door (54); There is provided reference voltage REF_2V5 by shunt regulator (51), through over-voltage comparator (52), output signal POK with door (53) or door (54), be used to indicate power supply output state.
8. a controller power source module, is characterized in that: it adopts controller power source as claimed in any of claims 1 to 7 in one of claims, and described controller power source is designed to module.
9. a controller power source chip, is characterized in that: it adopts controller power source as claimed in any of claims 1 to 7 in one of claims, and described controller power source is designed to chip.
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