CN100490283C - Unisolated switch DC-DC power supply module, power supply device and communication device - Google Patents

Unisolated switch DC-DC power supply module, power supply device and communication device Download PDF

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Publication number
CN100490283C
CN100490283C CNB2007101079631A CN200710107963A CN100490283C CN 100490283 C CN100490283 C CN 100490283C CN B2007101079631 A CNB2007101079631 A CN B2007101079631A CN 200710107963 A CN200710107963 A CN 200710107963A CN 100490283 C CN100490283 C CN 100490283C
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voltage stabilizing
translation circuit
stabilizing translation
prime
transistor
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CN101090231A (en
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李成勇
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Huawei Digital Power Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2007/071283 priority patent/WO2008141517A1/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/007—Plural converter units in cascade
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/008—Plural converter units for generating at two or more independent and non-parallel outputs, e.g. systems with plural point of load switching regulators

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

This invention discloses a DC-DC supply module with a non-separated switch including: a PWM generator and a voltage-stabilizing transforming circuit with a pair of transistors connected in couple, said PWM generator outputs a pair of PWM signals to control the switch of on or off of the pair of transistors to reduce the input voltage of the supply module and output it, in which, a prime pre-stabilizing transforming circuit is set between the terminal of the supply module and the transforming circuit used in carrying out prime reduction of the input voltage of the supply module controlled by the PWM signal output by the generator. This invention also discloses a supply device and a communication device.

Description

Unisolated switch DC-DC power supply module, supply unit and communicator
Technical field
The present invention relates to the electronic communication field, relate in particular to the Unisolated switch DC-DC power supply technology.
Background technology
Along with the integrated level of very lagre scale integrated circuit (VLSIC) such as CPU and improving constantly of processing speed, how to design and have wide-range voltage input and high efficiency non-isolation low-voltage, high-current switch dc-dc (DC-DC) converting power source becomes one of main task of power supply circuits design.Fig. 1 has provided a kind of structure chart of non-isolation low-voltage, high-current switch DC-DC converting power source circuit in the prior art, comprise pulse-width modulation (Pulse Width Modulation in this circuit, be called for short PWM) generator and heterogeneous synchronous rectification buck voltage stabilizing translation circuit (Buck circuit), the PWM generator output pwm signal is controlled the pair of metal-oxide-semiconductor field (hereinafter to be referred as metal-oxide-semiconductor) in each phase Buck circuit and is optionally switched between the turn-on and turn-off state, reaches the purpose of input voltage being carried out step-down; In above-mentioned power circuit, average value of output voltage U 0For:
U 0 = t on t on + t off V DD = t on T V DD = k V DD Formula (1)
Wherein, t OnBe in the time of conducting state for metal-oxide-semiconductor; t OffBe in the time of off state for metal-oxide-semiconductor; V DDInput voltage for power circuit; T=t On+ t Off, be the switch periods of metal-oxide-semiconductor; K is the conducting duty ratio (hereinafter to be referred as duty ratio) of metal-oxide-semiconductor.
In recent years, the input voltage required as the CPU even load is more and more lower, according to above-mentioned formula (1), in above-mentioned power circuit if lower output voltage is provided, under the situation that input voltage is fixed, need to reduce the duty ratio of metal-oxide-semiconductor, the ON time that promptly shortens metal-oxide-semiconductor shortens, can cause the switching loss of metal-oxide-semiconductor to increase like this, the efficient of circuit is reduced.
In addition, in the prior art in each phase Buck circuit the operating frequency of metal-oxide-semiconductor all higher, make that the switching loss of metal-oxide-semiconductor and drive loss are bigger, further reduced the efficient of circuit.
Summary of the invention
The technical problem that embodiments of the invention will solve provides Unisolated switch DC-DC power supply module, supply unit and communicator, can reach when load provides than low output voltage, avoids the reduction of circuit efficiency.
For solving the problems of the technologies described above, embodiments of the invention provide following technical scheme:
A kind of Unisolated switch DC-DC power supply module, comprise pulse-width modulation PWM generator and voltage stabilizing translation circuit, described voltage stabilizing translation circuit comprises a pair of transistor that is of coupled connections, described PWM generator is exported described this of a pair of pwm signal control transistor is optionally switched between conducting state and off state, carry out exporting after the step-down with input voltage to described power module, wherein, between the power supply terminal of described power module and described voltage stabilizing translation circuit, connect the pre-voltage stabilizing translation circuit of one-level prime at least, be used for that the input voltage to described power module carries out the prime step-down under the control of the corresponding pwm signal of PWM generator output, the pre-voltage stabilizing translation circuit of described prime comprises a pair of transistor that is of coupled connections, one inductor and a capacitor, this optionally switches between conducting state and off state under the corresponding pwm signal control of described PWM generator output transistor, described inductor one end is connected with capacitor, the other end and described transistor are to being of coupled connections, described capacitor is connected between inductor and the ground, described power module comprises at least two voltage stabilizing translation circuits, and the pwm signal of described PWM generator by correspondence disposes that transistorized switching frequency is the frequency division of transistorized switching frequency in the pre-voltage stabilizing translation circuit of prime in each voltage stabilizing translation circuit.
A kind of communicator, comprise Unisolated switch DC-DC power supply module, described power module comprises: pulse-width modulation PWM generator and voltage stabilizing translation circuit, described voltage stabilizing translation circuit comprises a pair of transistor that is of coupled connections, described PWM generator is exported described this of a pair of pwm signal control transistor is optionally switched between conducting state and off state, carry out exporting after the step-down with input voltage to described power module, wherein, between the power supply terminal of described power module and described voltage stabilizing translation circuit, connect the pre-voltage stabilizing translation circuit of one-level prime at least, be used for that the input voltage to described power module carries out the prime step-down under the control of the corresponding pwm signal of PWM generator output, the pre-voltage stabilizing translation circuit of described prime comprises a pair of transistor that is of coupled connections, one inductor and a capacitor, this optionally switches between conducting state and off state under the corresponding pwm signal control of described PWM generator output transistor, described inductor one end is connected with capacitor, the other end and described transistor are to being of coupled connections, described capacitor is connected between inductor and the ground, and described power module comprises at least two voltage stabilizing translation circuits; The pwm signal of described PWM generator by correspondence disposes that transistorized switching frequency is the frequency division of transistorized switching frequency in the pre-voltage stabilizing translation circuit of prime in each voltage stabilizing translation circuit.
A kind of supply unit, comprise Unisolated switch DC-DC power supply module, described power module comprises: pulse-width modulation PWM generator and voltage stabilizing translation circuit, described voltage stabilizing translation circuit comprises a pair of transistor that is of coupled connections, described PWM generator is exported described this of a pair of pwm signal control transistor is optionally switched between conducting state and off state, carry out exporting after the step-down with input voltage to described power module, wherein, between the power supply terminal of described power module and described voltage stabilizing translation circuit, connect the pre-voltage stabilizing translation circuit of one-level prime at least, be used for that the input voltage to described power module carries out the prime step-down under the control of the corresponding pwm signal of PWM generator output, the pre-voltage stabilizing translation circuit of described prime comprises a pair of transistor that is of coupled connections, one inductor and a capacitor, this optionally switches between conducting state and off state under the corresponding pwm signal control of described PWM generator output transistor, described inductor one end is connected with capacitor, the other end and described transistor are to being of coupled connections, described capacitor is connected between inductor and the ground, and described power module comprises at least two voltage stabilizing translation circuits; The pwm signal of described PWM generator by correspondence disposes that transistorized switching frequency is the frequency division of transistorized switching frequency in the pre-voltage stabilizing translation circuit of prime in each voltage stabilizing translation circuit.
As can be seen from the above technical solutions, embodiments of the invention have following beneficial effect:
By between the power supply terminal of power module and the voltage stabilizing translation circuit that powers to the load, increasing the pre-voltage stabilizing translation circuit of prime, reduce the input voltage of described voltage stabilizing translation circuit, according to formula (1), when need be when load provides lower output voltage, because input voltage and output voltage all reduce, therefore, very little to the influence of transistorized duty ratio in the described voltage stabilizing translation circuit; And in the prior art, need when load provides lower output voltage,, therefore need to reduce transistorized duty ratio because input voltage is fixed (power supply terminal by power module provides); Therefore, when load provided lower output voltage, compared with prior art, the embodiment of the invention can be avoided the reduction of transistor duty ratio in the voltage stabilizing translation circuit, thereby has avoided the increase of transistor switch loss and the reduction of circuit efficiency.
Description of drawings
Fig. 1 is the structure chart of a kind of non-isolation low-voltage, high-current switch DC-DC converting power source circuit in the prior art;
Fig. 2 is the structure chart of the embodiment of the invention one Unisolated switch DC-DC power supply module;
Fig. 3 is the phase relation schematic diagram of each phase voltage stabilizing translation circuit and the pre-voltage stabilizing translation circuit of prime metal-oxide-semiconductor switching frequency in the embodiment of the invention one;
Fig. 4 is the structure chart of the embodiment of the invention two Unisolated switch DC-DC power supply modules;
Fig. 5 is the structure chart of the embodiment of the invention three Unisolated switch DC-DC power supply modules;
Fig. 6 is the structure chart of the embodiment of the invention four Unisolated switch DC-DC power supply modules.
Embodiment
The invention provides Unisolated switch DC-DC power supply module, supply unit and communicator, the embodiment to described module and device is described in detail below.
Embodiment one, a kind of Unisolated switch DC-DC power supply module with reference to figure 2, comprise PWM generator 100, voltage stabilizing translation circuit group 200 and the pre-voltage stabilizing translation circuit 300 of prime;
The pre-voltage stabilizing translation circuit 300 of described prime comprises a pair of metal-oxide- semiconductor 301 and 302, one inductor 310 and a capacitor 320; The power supply terminal V of the drain electrode of metal-oxide-semiconductor 301 and described power module DDConnect; The drain electrode of metal-oxide-semiconductor 302 is connected with the source electrode of metal-oxide-semiconductor 301, and its source electrode is connected with ground; Described inductor 310 1 ends are connected with capacitor 320, and the other end is connected with the source electrode of metal-oxide-semiconductor 301 and the drain coupled of metal-oxide-semiconductor 302; Described capacitor 320 is connected between inductor 310 and the ground;
The structure of each voltage stabilizing translation circuit is identical with the structure of the pre-voltage stabilizing translation circuit 300 of described prime in the voltage stabilizing translation circuit group 200, also comprise a pair of metal-oxide- semiconductor 201 and 202, one inductor 210 and a capacitor 220, the pre-voltage stabilizing translation circuit of connection between each element and described prime 300 is similar, and the difference part is that the drain electrode of metal-oxide-semiconductor 201 is that inductor 310 and capacitor 320 with the pre-voltage stabilizing translation circuit 300 of prime is of coupled connections;
The grid output pwm signal of described PWM generator 100 each metal-oxide-semiconductor (201,202,301 and 302) in described voltage stabilizing translation circuit 200 and the pre-voltage stabilizing translation circuit 300 of prime, control each metal-oxide-semiconductor and switch between conducting and off state, each in described voltage stabilizing translation circuit 200 and the pre-voltage stabilizing translation circuit 300 of prime is set to different states to metal-oxide-semiconductor;
Pre-voltage stabilizing translation circuit 300 operation principles are identical with the operation principle of described voltage stabilizing translation circuit described in the present embodiment, mainly be optionally between conducting and off state, to switch 301 and 302, reach the purpose of the input voltage of this circuit being carried out step-down by the metal-oxide-semiconductor in the pwm signal control circuit of PWM generator output; Specifically, when metal-oxide-semiconductor 301 conductings, metal-oxide-semiconductor 302 turn-offs, and electric current is from V DDFlow through metal-oxide-semiconductor 301 and inductor 310 and make capacitor 320 chargings; When metal-oxide-semiconductor 301 turn-offed, metal-oxide-semiconductor 302 conductings for electric current provides the afterflow path, made capacitor 320 discharges;
In the present embodiment, power to the load after the capacitor of each voltage stabilizing translation circuit is connected in parallel with each other in the described voltage stabilizing translation circuit group 200, form heterogeneous voltage stabilizing translation circuit, can produce bigger output current with higher efficient; Wherein, the pwm signal of PWM generator by correspondence disposes each phase voltage stabilizing translation circuit and works under out of phase each other, and the switching frequency that can dispose metal-oxide-semiconductor in every phase voltage stabilizing translation circuit is the Fractional-N frequency of the switching frequency of metal-oxide-semiconductor in the pre-voltage stabilizing translation circuit of described prime, and make metal-oxide-semiconductor in each phase voltage stabilizing translation circuit conducting state alternately with the pre-voltage stabilizing translation circuit of prime in the conducting state of metal-oxide-semiconductor synchronous, wherein, N equals voltage stabilizing translation circuit number sum; For instance, if voltage stabilizing translation circuit group 200 is formed 4 phase voltage stabilizing translation circuits, if the switching frequency of metal-oxide-semiconductor is f in the pre-voltage stabilizing translation circuit of prime, the switching frequency of metal-oxide-semiconductor is 4 frequency divisions of f in then every phase voltage stabilizing translation circuit, be f/4, each phase voltage stabilizing translation circuit is worked under out of phase each other, and in each circuitry phase the conducting state of metal-oxide-semiconductor alternately with the pre-voltage stabilizing translation circuit of prime in the conducting state of metal-oxide-semiconductor synchronous, the phase relation of described each phase voltage stabilizing translation circuit and the pre-voltage stabilizing translation circuit of prime metal-oxide-semiconductor switching frequency can be with reference to figure 3.
Embodiment two, a kind of Unisolated switch DC-DC power supply module, with reference to figure 4, present embodiment and embodiment one are basic identical, the main distinction is: in the present embodiment, each voltage stabilizing translation circuit is exported separately in the described voltage stabilizing translation circuit group, channeling voltage stabilizing translation circuit can be respectively to a plurality of electric; Similar with embodiment one, PWM generator also can dispose each voltage stabilizing translation circuit by the pwm signal of correspondence and work under out of phase each other, and the switching frequency that can dispose metal-oxide-semiconductor in every road voltage stabilizing translation circuit is a metal-oxide-semiconductor switching frequency Fractional-N frequency in the pre-voltage stabilizing translation circuit of described prime, and make metal-oxide-semiconductor in each road voltage stabilizing translation circuit conducting state alternately with the pre-voltage stabilizing translation circuit of prime in the conducting state of metal-oxide-semiconductor synchronous, wherein, N equals voltage stabilizing translation circuit number sum.
Embodiment three, a kind of Unisolated switch DC-DC power supply module, with reference to figure 5, present embodiment and embodiment one are basic identical, the main distinction is: in the present embodiment, export after forming heterogeneous voltage stabilizing translation circuit by part voltage stabilizing translation circuit in the described voltage stabilizing translation circuit group, form multiphase and multipath voltage stabilizing translation circuit like this; Similar with embodiment one, PWM generator also can dispose each voltage stabilizing translation circuit by the pwm signal of correspondence and work under out of phase each other, and the switching frequency that can dispose metal-oxide-semiconductor in each circuit is the Fractional-N frequency of the switching frequency of metal-oxide-semiconductor in the pre-voltage stabilizing translation circuit of described prime, and make metal-oxide-semiconductor in each voltage stabilizing translation circuit conducting state alternately with the pre-voltage stabilizing translation circuit of prime in the conducting state of metal-oxide-semiconductor synchronous, wherein, N equals voltage stabilizing translation circuit number sum.
In the above embodiment of the present invention, described PWM generator can output to described voltage stabilizing translation circuit or the pre-voltage stabilizing translation circuit of prime according to the fixing pwm signal of the needs output duty cycle of actual conditions, also can the output voltage of described voltage stabilizing translation circuit or the pre-voltage stabilizing translation circuit of prime be detected, and according to testing result the duty ratio of the pwm signal that outputs to described voltage stabilizing translation circuit or the pre-voltage stabilizing translation circuit of prime is adjusted, so that the output voltage of described voltage stabilizing translation circuit or the pre-voltage stabilizing translation circuit of prime is adjusted.
In the more embodiment of power module of the present invention, also the signal of telecommunication after the step-down of the pre-voltage stabilizing translation circuit of described prime can be told at least one road and directly export, to give other power module power supplies.
Be to describe in the above embodiment of the present invention, in the more embodiment of power module of the present invention, also can consider that needs adopt two-stage or the pre-voltage stabilizing translation circuit of the multistage prime more than the two-stage according to actual conditions with the pre-voltage stabilizing translation circuit of one-level prime.
Embodiment four, a kind of Unisolated switch DC-DC power supply module, with reference to figure 6, present embodiment and embodiment one are similar, the main distinction is, in the present embodiment, adopt the pre-voltage stabilizing translation circuit of two-stage prime, the structure of the pre-voltage stabilizing translation circuit of prime is basic identical described in the structure of every grade of pre-voltage stabilizing translation circuit of prime and the foregoing description, and the difference part is:
The drain electrode of the metal-oxide-semiconductor 401 of the pre-voltage stabilizing translation circuit 400 of prime and the power supply terminal V of described power module DDConnect; The inductor 410 and the capacitor 420 of the drain electrode of the metal-oxide-semiconductor 501 of the pre-voltage stabilizing translation circuit 500 of prime and the pre-voltage stabilizing translation circuit 400 of prime are of coupled connections, and are about to the input voltage of the voltage of the pre-voltage stabilizing translation circuit output of previous stage prime as the pre-voltage stabilizing translation circuit of back one-level prime;
The grid output pwm signal of PWM generator 600 each metal-oxide-semiconductor in pre-voltage stabilizing translation circuit 400 of prime and the pre-voltage stabilizing translation circuit 500 of prime, control each metal-oxide-semiconductor and between conducting and off state, switch, and in the configuration prime pre-voltage stabilizing translation circuit 400 in the conducting state of metal-oxide-semiconductor and the pre-voltage stabilizing translation circuit 500 of prime the conducting state of metal-oxide-semiconductor synchronous.
In the more embodiment of power module of the present invention,, and/or in the pre-voltage stabilizing translation circuit of prime, also can adopt metal-oxide-semiconductor other switching transistors in addition, as bipolar transistor (BJT) or igbt (IGBT) etc. in voltage stabilizing translation circuit group.
The embodiment of the invention also provides a kind of communicator, can comprise the Unisolated switch DC-DC power supply module described in above-mentioned arbitrary power module embodiment.
The embodiment of the invention also provides a kind of supply unit, can comprise the Unisolated switch DC-DC power supply module described in above-mentioned arbitrary power module embodiment.
In the above embodiment of the present invention, by between the power supply terminal of power module and the voltage stabilizing translation circuit that powers to the load, increasing the pre-voltage stabilizing translation circuit of prime, reduce the input voltage of described voltage stabilizing translation circuit, according to formula (1), when need be when load provides lower output voltage, because input voltage and output voltage all reduce, and be therefore, very little to the influence of transistor duty ratio in the described voltage stabilizing translation circuit; And in the prior art, need when load provides lower output voltage,, therefore need to reduce transistorized duty ratio because input voltage is fixed (power supply terminal by power module provides); Therefore, when load provided lower output voltage, compared with prior art, the embodiment of the invention can be avoided the reduction of transistor duty ratio in the voltage stabilizing translation circuit, thereby has avoided the increase of transistor switch loss and the reduction of circuit efficiency;
In addition, between the power supply terminal of power module and voltage stabilizing translation circuit, increase the effect that the pre-voltage stabilizing translation circuit of prime also can reach the input voltage range that increases power module; With the supply power voltage that 1V is provided to load is example, if the duty cycle range of transistor work is 20%-50%, according to formula (1), during the pre-voltage stabilizing translation circuit of no prime, the scope of the input voltage of power module is 2V-5V; And after increasing the pre-voltage stabilizing translation circuit of prime, the input voltage range of power module can reach 4V-25V.
More than Unisolated switch DC-DC power supply module provided by the present invention, supply unit and communicator are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and thought thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims (6)

1, a kind of Unisolated switch DC-DC power supply module, comprise pulse-width modulation PWM generator and voltage stabilizing translation circuit, described voltage stabilizing translation circuit comprises a pair of transistor that is of coupled connections, described PWM generator is exported a pair of pwm signal and is controlled this transistor is optionally switched between conducting state and off state, carry out exporting after the step-down with input voltage to described power module, it is characterized in that, between the power supply terminal of described power module and described voltage stabilizing translation circuit, connect the pre-voltage stabilizing translation circuit of one-level prime at least, be used for that the input voltage to described power module carries out the prime step-down under the control of the corresponding pwm signal of PWM generator output, the pre-voltage stabilizing translation circuit of described prime comprises a pair of transistor that is of coupled connections, one inductor and a capacitor, this optionally switches between conducting state and off state under the corresponding pwm signal control of described PWM generator output transistor, described inductor one end is connected with capacitor, the other end and described transistor are to being of coupled connections, described capacitor is connected between inductor and the ground, described power module comprises at least two voltage stabilizing translation circuits, and the pwm signal of described PWM generator by correspondence disposes that transistorized switching frequency is the frequency division of transistorized switching frequency in the pre-voltage stabilizing translation circuit of prime in each voltage stabilizing translation circuit.
2, Unisolated switch DC-DC power supply module as claimed in claim 1, it is characterized in that, described PWM generator, be used for by correspondence the transistorized conducting state of pwm signal described each the voltage stabilizing translation circuit of configuration alternately with the pre-voltage stabilizing translation circuit of prime in transistorized conducting state synchronous.
3, Unisolated switch DC-DC power supply module as claimed in claim 1 or 2 is characterized in that, the pwm signal that described PWM generator outputs to the pre-voltage stabilizing translation circuit of prime is the fixing pwm signal of duty ratio.
4, as claim 1 or 2 each described Unisolated switch DC-DC power supply modules, it is characterized in that, described PWM generator, be further used for the duty ratio of the pwm signal that outputs to the pre-voltage stabilizing translation circuit of prime is adjusted, described adjustment is to carry out according to the testing result of the voltage that is obtained after the step-down of the pre-voltage stabilizing translation circuit of prime.
5, a kind of communicator, comprise Unisolated switch DC-DC power supply module, described power module comprises: pulse-width modulation PWM generator and voltage stabilizing translation circuit, described voltage stabilizing translation circuit comprises a pair of transistor that is of coupled connections, described PWM generator is exported a pair of pwm signal and is controlled this transistor is optionally switched between conducting state and off state, carry out exporting after the step-down with input voltage to described power module, it is characterized in that, between the power supply terminal of described power module and described voltage stabilizing translation circuit, connect the pre-voltage stabilizing translation circuit of one-level prime at least, be used for that the input voltage to described power module carries out the prime step-down under the control of the corresponding pwm signal of PWM generator output, the pre-voltage stabilizing translation circuit of described prime comprises a pair of transistor that is of coupled connections, one inductor and a capacitor, this optionally switches between conducting state and off state under the corresponding pwm signal control of described PWM generator output transistor, described inductor one end is connected with capacitor, the other end and described transistor are to being of coupled connections, described capacitor is connected between inductor and the ground, and described power module comprises at least two voltage stabilizing translation circuits; The pwm signal of described PWM generator by correspondence disposes that transistorized switching frequency is the frequency division of transistorized switching frequency in the pre-voltage stabilizing translation circuit of prime in each voltage stabilizing translation circuit.
6, a kind of supply unit, comprise Unisolated switch DC-DC power supply module, described power module comprises: pulse-width modulation PWM generator and voltage stabilizing translation circuit, described voltage stabilizing translation circuit comprises a pair of transistor that is of coupled connections, described PWM generator is exported a pair of pwm signal and is controlled this transistor is optionally switched between conducting state and off state, carry out exporting after the step-down with input voltage to described power module, it is characterized in that, between the power supply terminal of described power module and described voltage stabilizing translation circuit, connect the pre-voltage stabilizing translation circuit of one-level prime at least, be used for that the input voltage to described power module carries out the prime step-down under the control of the corresponding pwm signal of PWM generator output, the pre-voltage stabilizing translation circuit of described prime comprises a pair of transistor that is of coupled connections, one inductor and a capacitor, this optionally switches between conducting state and off state under the corresponding pwm signal control of described PWM generator output transistor, described inductor one end is connected with capacitor, the other end and described transistor are to being of coupled connections, described capacitor is connected between inductor and the ground, and described power module comprises at least two voltage stabilizing translation circuits; The pwm signal of described PWM generator by correspondence disposes that transistorized switching frequency is the frequency division of transistorized switching frequency in the pre-voltage stabilizing translation circuit of prime in each voltage stabilizing translation circuit.
CNB2007101079631A 2007-05-18 2007-05-18 Unisolated switch DC-DC power supply module, power supply device and communication device Active CN100490283C (en)

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CNB2007101079631A CN100490283C (en) 2007-05-18 2007-05-18 Unisolated switch DC-DC power supply module, power supply device and communication device
PCT/CN2007/071283 WO2008141517A1 (en) 2007-05-18 2007-12-20 A non-isolating switch dc-dc power supply module, a power supply device, and a communication device

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CN106877694A (en) * 2015-12-10 2017-06-20 广州航天海特系统工程有限公司 A kind of technical grade communication equipment supply unit
CN109586556B (en) * 2018-12-10 2020-02-07 郑州云海信息技术有限公司 Multiphase pulse width voltage reduction regulating circuit and regulating method thereof
CN109687552A (en) * 2019-01-15 2019-04-26 长沙硕博电子科技股份有限公司 A kind of alternating current-direct current input charging station
CN111464002A (en) * 2019-01-18 2020-07-28 南京博兰得电子科技有限公司 Voltage regulating device

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