CN104201898B - A kind of integrated DC/DC power supplys front controller, control method and control system - Google Patents
A kind of integrated DC/DC power supplys front controller, control method and control system Download PDFInfo
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- CN104201898B CN104201898B CN201410456057.2A CN201410456057A CN104201898B CN 104201898 B CN104201898 B CN 104201898B CN 201410456057 A CN201410456057 A CN 201410456057A CN 104201898 B CN104201898 B CN 104201898B
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Abstract
A kind of integrated DC/DC power supplys front-end control system of the present invention, wherein, the integrated DC/DC power supplys front-end control system comprises at least an integrated DC/DC power supplys front controller, one of them integrated DC/DC power supply front-end control is operated in main mode of operation, other integrated DC/DC power supply front controllers are operated in from mode of operation, the integrated DC/DC power supplys front controller being operated under main mode of operation export clock signal under work from the integrated DC/DC power supplys front controller under mode of operation.Power consumption can be reduced, especially in multigroup integrated DC/DC power-supply controller of electric composition integrated power supply front-end control system, saves resource.And the DC/DC translation functions of different voltage requirements are realized by connecting one or more transformers.
Description
Technical field
The present invention relates to power module power supply field, more particularly to the front-end control system of DC/DC power supplys power supply.
Background technology
Power supply is the essential part of all electronic equipments, is equipment " power source ".D.C. regulated power supply is electricity
Meat and potatoes in source, the quality of its performance directly affect the reliability of electronic equipment.With the continuous hair of semiconductor technology
Exhibition and the different demands of each electronic product, miscellaneous power module arise at the historic moment.
There are many power module products in the market, best, the category TI companies of usage amount at most the product done.TI is public
The DCP10505 of department is a efficient 5V inputs DC/DC conversion electric power chips, has output short circuit protection and crosses Thermal shutdown work(
Energy.For its circuit block diagram as shown in figure 1, what still its power supply must be external one is synchronous and bad, integrated configuration degree is not high.
The content of the invention
The technical problems to be solved by the invention are to provide that a kind of circuit is simple, control reliability is high, low in energy consumption, synchronous effect
The more preferable more accurate integrated DC/DC power supplys front-end control system of fruit.
In order to solve the above technical problems, a kind of integrated DC/DC power supplys front controller of the present invention, including oscillator mould
Block, division and reseting module, non-overlapping clock buffer module, power output tube module and overheat protector module, its feature
It is：The integrated DC/DC power supplys front controller also includes synchronization and clock control module, the synchronization and clock control mould
The signal that root tuber inputs according to DC/DC power supply front controllers outside port determines the work of the DC/DC power supplys front controller
Pattern.
Preferably, the outside port of the integrated DC/DC power supplys front controller includes input supply voltage port, enabled
Signal port, synchronous digital signal port, input end of clock mouth and output terminal of clock mouth and two voltage output ports.
Preferably, the oscillator module connects the division and reseting module, the division and institute is connected with reseting module
Synchronization and clock control module are stated, the synchronization is connected the non-overlapping clock buffer module with clock control module, described
Power output tube module has two power output pipes, and non-overlapping clock buffer module connects two power output pipes, institute
Overheat protector module one end connection oscillator module is stated, the overheat protector module other end connects synchronous and clock control mould
Block.
Preferably, the input supply voltage port, which is given, connects integrated each module of DC/DC power supplys front controller simultaneously
Working power is provided, the enable signal port connects the oscillator module and the synchronization and clock control module, described
Synchronous digital signal port connects the oscillator module and the synchronization and clock control module, and the input end of clock mouth connects
The synchronization and clock control module are connect, the output terminal of clock mouth connects the synchronization and clock control module and the division
With reseting module, described two voltage output ports connect the power output tube module.
A kind of integrated DC/DC power supplys front controller control method, including foregoing integrated DC/DC power supplys front-end control
Device, wherein, the integrated DC/DC power supplys front controller includes a main mode of operation and one from mode of operation, described same
Step determines the integrated DC/DC power supplys front controller with clock control module according to the state of the synchronous digital signal of input
Mode of operation.
Preferably, when synchronous digital signal is disarmed state, worked based on the integrated DC/DC power supplys front controller
Pattern, the oscillator module produce square-like clock signal, clock output signal end output clock signal；Work as synchronous digital signal
For effective status when, the integrated DC/DC power supplys front controller to be stopped from mode of operation, the oscillator module,
Clock signal is inputted by the clock signal of outside from the input end of clock mouth.
Preferably, when the clock input signal failure that input end of clock mouth is detected from mode of operation, the oscillator mould
Block, which starts, produces internal clock signal.
Preferably, described two voltage output ports may be connected to a few transformer.
A kind of integrated DC/DC power supplys front-end control system, wherein, the integrated DC/DC power supplys front-end control system is at least
Including an integrated DC/DC power supplys front controller, one of them integrated DC/DC power supply front-end control is operated in main Working mould
Formula, other integrated DC/DC power supply front controllers are operated in from mode of operation, the integrated DC/DC being operated under main mode of operation
Power supply front controller exports clock signal to being operated in the integrated DC/DC power supplys front controller under mode of operation.
Preferably, each integrated DC/DC power supply front controllers connect a transformer, after all transformers and company
Output voltage；Or each integrated DC/DC power supply front controllers connect a transformer, and all transformers connected in parallel are connected
Connect rear output voltage.
The integrated DC/DC power supplys front-end control system of the present invention, by using integrated DC/DC power supplys front controller group
Into.And integrated DC/DC power supply front controllers have main mode of operation and from mode of operation, oscillator mould when from mode of operation
What block was off, power consumption can be reduced, especially in multigroup integrated DC/DC power-supply controller of electric composition integrated power supply front-end control system
When, save resource.And the DC/DC translation functions of different voltage requirements are realized by connecting one or more transformers.
Using simple digital synchronization signal, without an external very accurate simulation signal generator；Synchronism is very good；Very
Easily use and be connected with external devices, especially in independent research power supply chip, be easy to do different integrated configurations；Reliability
It is high.And when main mode of operation output clock go wrong when, from mode of operation under must integrate DC/DC power supply front-end controls
Device independently can cut off the master clock to go wrong, use oneself internal clock.
Brief description of the drawings
The present invention is described in further detail with reference to the accompanying drawings and detailed description：
Fig. 1 is the theory diagram of power conversion chip in the prior art；
Fig. 2 is the integrated DC/DC power supplys front controller of the embodiment of the integrated DC/DC power supply front-end control systems of the present invention
Theory diagram；
Fig. 3 is the integrated DC/DC power supplys front controller of the embodiment of the integrated DC/DC power supply front-end control systems of the present invention
Single supply connection diagram；
Fig. 4 is that the integrated DC/DC power supplys front controller of the embodiment of the integrated DC/DC power control systems of the present invention is in parallel
Power supply schematic diagram；
Fig. 5 is the integrated DC/DC power supplys front controller series connection of the embodiment of the integrated DC/DC power control systems of the present invention
Power supply schematic diagram；
Fig. 6 is the clock timing diagram of the embodiment of the integrated DC/DC power control systems of the present invention.
Embodiment
Embodiment：
A kind of integrated DC/DC power supplys front controller of the present invention, wherein, the integrated DC/DC power supplys front controller bag
Include oscillator module, division and reseting module, synchronous and clock control module, non-overlapping clock buffer module, power output
Tube module and overheat protector module.
As shown in Fig. 2 in the present embodiment, the oscillator module connects the division and reseting module, the division
Described synchronous and clock control module is connected with reseting module, when the synchronization is connected described non-overlapping with clock control module
Clock cache module, the power output tube module have two power output pipes (LDMOS), and non-overlapping clock buffer module connects
Connect two power output pipes (LDMOS), overheat protector module one end connection oscillator module, the overheat protector module is another
One end connects synchronization and clock control module.
In the present embodiment, the integrated DC/DC power supplys front controller includes input supply voltage port, enable signal
Port, synchronous digital signal port, input end of clock mouth and output terminal of clock mouth and two voltage output ports export 1 and
Output 2.As shown in Fig. 2 the input supply voltage port, which is given, connects integrated each module of DC/DC power supplys front controller simultaneously
Working power is provided, the enable signal end connects the oscillator module and the synchronization and clock control module, described same
Walk digital signal end and connect the oscillator module and the synchronization and clock control module, the input end of clock mouth connects institute
Synchronization and clock control module are stated, the output terminal of clock mouth connects the synchronization and clock control module, described two voltages
Output port connects the power output tube module.
Integrated DC/DC power supplys front controller in the present invention includes a main mode of operation and one from mode of operation,
The synchronization determines that the integrated DC/DC power supplys front end is controlled with clock control module according to the state of the synchronous digital signal of input
The mode of operation of device processed.The working method of the integrated DC/D power supplys front controller of the present embodiment is as follows：
Oscillator module and synchronous and clock control module are by enable signal, synchronous digital signal, clock input signal control
System.The function of oscillator module is generation square-like clock signal.It is synchronous to control mould with clock control module for the core of the present invention
Block, its function are the master/slave mode of operations of selection circuit；Under working condition, the input clock to go wrong can be cut off, used
Oneself internal clock；When temperature is too high, output, breaking circuit are automatically cut off.
Specific implementation is as follows：When enable signal is disarmed state, power supply turns off in circuit, shut-off when
Wait, two power tube LDMOS grid G ate voltages are all in 0V；It is the normal work of circuit when enable signal is in effective status
Make state.
Now, when synchronous digital signal is disarmed state, based on described integrated DC/DC power supplys front controller
Mode of operation, clock output signal can be used as clock signal to export, can be supplied to other circuits.
When synchronous digital signal is effective status, described integrated DC/DC power supplys front controller just becomes
From mode of operation, oscillator can be turned off (in order to save power consumption), and clock signal is just supplied by the clock of outside, from input end of clock
Mouth enters.
In order to improve reliability, if (becoming Chang Wuxiao when under mode of operation, detecting clock input signal failure
State or normal effective status), internal clocking module will automatically begin to work so that chip and can recovers normal operating conditions.
The clock for driving two power tube LDMOS must be non-overlapping clock (Non-Overlapping Clock).This
The clock signal of sample is produced by non-overlapping clock buffer module, and its sequential is as shown in fig. 6, this module includes an output caching
Device, drive two power output pipes.By the voltage output end output 1 of two power output pipes, output 2 is with certain connection side
Formula connects one or more transformers, and the DC/DC change-over circuits of different output voltages can be achieved.
It is that DC/DC power supply front-end control system single supply connection figures are integrated in the present embodiment as shown in Figure 3, wherein integrated
DC/DC power supply front-end controls system includes an integrated DC/DC power supplys front controller and connects the transformation of its voltage output end
Device obtains the output voltage Vout that user wants.
Because integrated DC/DC power supply front controllers have master and slave two kinds of mode of operations, then in integrated DC/DC power supplys
The integrated DC/DC power supply front controllers of group can be used in front-end control system, drive other all with a master clock signal
From chip clock.
Therefore, the integrated DC/DC power supplys front-end control system as the present embodiment, it can have multigroup integrated DC/DC electricity
End-apparatus before source, wherein only needing one to be operated under main mode of operation, other can be operated under mode of operation.
As shown in figure 4, integrated DC/DC power supply front-end controls system includes two integrated DC/DC power supplys front controllers, its
In one be operated under main mode of operation, another is operated under mode of operation, and it connects two transformations in parallel
Device, obtain twice of Vout power outputs (Power).
As shown in figure 5, integrated DC/DC power supply front-end controls system includes three integrated DC/DC power supplys front controllers, its
In one be operated under main mode of operation, another two is operated under mode of operation, and it is connected in series to three transformations
Device, obtain the output voltage of three output summations.
The integrated DC/DC power supplys front-end control system of the present invention, by using integrated DC/DC power supplys front controller group
Into.And integrated DC/DC power supply front controllers have main mode of operation and from mode of operation, oscillator mould when from mode of operation
What block was off, power consumption can be reduced, especially in multigroup integrated DC/DC power-supply controller of electric composition integrated power supply front-end control system
When, save resource.And the DC/DC translation functions of different voltage requirements are realized by connecting one or more transformers.
Using simple digital synchronization signal, without an external very accurate simulation signal generator；Synchronism is very good；Very
Easily use and be connected with external devices, especially in independent research power supply chip, be easy to do different integrated configurations；Reliability
It is high.And when main mode of operation output clock go wrong when, from mode of operation under integrated DC/DC power supplys front-end control
Device independently can cut off the master clock to go wrong, use oneself internal clock.
It is emphasized that protection scope of the present invention is including but not limited to above-mentioned embodiment.It should be pointed out that pair
For those skilled in the art, under the premise without departing from the principles of the invention, several modifications and improvements can also be made, this
It should also be considered as belonging to protection scope of the present invention a bit.
Claims (8)
1. a kind of integrated DC/DC power supplys front controller, including oscillator module, division and reseting module, non-overlapping clock
Cache module, power output tube module and overheat protector module, it is characterised in that：The integrated DC/DC power supplys front-end control
Device also includes synchronization and clock control module, the synchronization and clock control module according to DC/DC power supply front controllers outside
The signal of port input determines the mode of operation of the DC/DC power supplys front controller；
The integrated DC/DC power supplys front controller outside port includes input supply voltage port, enable signal port, synchronization
Digital signal port, input end of clock mouth and output terminal of clock mouth and two voltage output ports；
The oscillator module connects the division and reseting module, and the division connects described synchronous and clock with reseting module
Control module, the synchronization are connected the non-overlapping clock buffer module, the power output pipe die with clock control module
Block has two power output pipes, and the non-overlapping clock buffer module connects two power output pipes, the overheat protector
Module one end connection oscillator module, the overheat protector module other end connection synchronization and clock control module.
2. integrated DC/DC power supplys front controller according to claim 1, it is characterised in that：The input supply voltage
Port connects each module of the integrated DC/DC power supplys front controller and provides working power, the enable signal port connection
The oscillator module and the synchronization and clock control module, the synchronous digital signal port connect the oscillator module
With the synchronization and clock control module, the input end of clock mouth connects the synchronization and clock control module, the clock
Output port connects the synchronization and clock control module and the division and reseting module, and described two voltage output ports connect
Connect the power output tube module.
3. a kind of control method being controlled to integrating DC/DC power supply front controllers, including described in one of claim 1-2
Integrated DC/DC power supplys front controller, it is characterised in that：The integrated DC/DC power supplys front controller includes a main work
Operation mode and one determine from mode of operation, the synchronization with clock control module according to the state of the synchronous digital signal of input
The mode of operation of the integrated DC/DC power supplys front controller.
4. control method according to claim 3, it is characterised in that：When synchronous digital signal is disarmed state, the collection
It is main mode of operation into DC/DC power supplys front controller, the oscillator module produces square-like clock signal, clock output signal
Port exports clock signal；When synchronous digital signal is effective status, the integrated DC/DC power supplys front controller is from work
Operation mode, the oscillator module are stopped, and clock signal is inputted by the clock signal of outside from the input end of clock mouth.
5. control method according to claim 4, it is characterised in that：The clock input signal of clock input port upon this detection
Failure, the oscillator module, which starts, produces internal clock signal.
6. control method according to claim 4, it is characterised in that：Two voltage output ports are connected to a few transformation
Device.
A kind of 7. integrated DC/DC power supplys front-end control system, it is characterised in that：The integrated DC/DC power supplys front-end control system
Including at least the integrated DC/DC power supplys front controller of two claims 1 or 2, one of them integrated DC/DC power supplys front end control
Device processed is operated in main mode of operation, and other integrated DC/DC power supply front controllers are operated in from mode of operation, are operated in main work
Integrated DC/DC power supplys front controller under pattern exports clock signal to the integrated DC/DC electricity being operated under mode of operation
Source front controller.
8. integrated DC/DC power supplys front-end control system according to claim 7, it is characterised in that：Each integrated DC/DC electricity
Source front controller all connects a transformer, output voltage after all transformer series are connected；Or each integrate DC/
D/C power front controller all connects a transformer, output voltage after all transformers connected in parallel are connected.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710765177.4A CN107612338B (en) | 2014-09-09 | 2014-09-09 | Integrated DC/DC power supply front-end control system and control method |
| CN201410456057.2A CN104201898B (en) | 2014-09-09 | 2014-09-09 | A kind of integrated DC/DC power supplys front controller, control method and control system |
| CN201710765180.6A CN107612339B (en) | 2014-09-09 | 2014-09-09 | Control method of integrated DC/DC power supply front-end controller |
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| CN201410456057.2A CN104201898B (en) | 2014-09-09 | 2014-09-09 | A kind of integrated DC/DC power supplys front controller, control method and control system |
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| CN201710765180.6A Division CN107612339B (en) | 2014-09-09 | 2014-09-09 | Control method of integrated DC/DC power supply front-end controller |
| CN201710765177.4A Division CN107612338B (en) | 2014-09-09 | 2014-09-09 | Integrated DC/DC power supply front-end control system and control method |
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| CN104201898A CN104201898A (en) | 2014-12-10 |
| CN104201898B true CN104201898B (en) | 2017-12-22 |
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| CN201710765180.6A Active CN107612339B (en) | 2014-09-09 | 2014-09-09 | Control method of integrated DC/DC power supply front-end controller |
| CN201710765177.4A Active CN107612338B (en) | 2014-09-09 | 2014-09-09 | Integrated DC/DC power supply front-end control system and control method |
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| CN201710765177.4A Active CN107612338B (en) | 2014-09-09 | 2014-09-09 | Integrated DC/DC power supply front-end control system and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612339A (en) * | 2014-09-09 | 2018-01-19 | 嘉兴市纳杰微电子技术有限公司 | Integrated DC/DC power supplys front controller, control method and control system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100329B (en) * | 2016-07-27 | 2019-04-09 | 嘉兴市纳杰微电子技术有限公司 | Use the dcdc converter of digital synchronous logic control circuit |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5469110A (en) * | 1994-06-27 | 1995-11-21 | Industrial Technology Research Institute | Charge pumping circuit using non-overlapping clock control |
| JP2007199210A (en) * | 2006-01-24 | 2007-08-09 | Seiko Epson Corp | Semiconductor integrated circuit |
| US8239597B2 (en) * | 2008-07-18 | 2012-08-07 | Intersil Americas Inc. | Device-to-device communication bus for distributed power management |
| US20100117850A1 (en) * | 2008-11-07 | 2010-05-13 | Mccaslin Robert | Precisely synchronized notification system |
| JP2012080756A (en) * | 2010-09-07 | 2012-04-19 | Renesas Electronics Corp | Integrated circuit device for switching regulator and design method therefor |
| CN102427364B (en) * | 2011-12-07 | 2014-02-12 | 西安启芯微电子有限公司 | External clock synchronization circuit of switching power supply |
| CN202794341U (en) * | 2012-05-30 | 2013-03-13 | 国网电力科学研究院武汉南瑞有限责任公司 | Digital dielectric-loss measurement device using time synchronization function of IEEE1588 |
| TWI452458B (en) * | 2012-06-25 | 2014-09-11 | Richtek Technology Corp | Switching regulator control circuit with multiple clock frequency setting modes |
| US9281749B2 (en) * | 2012-08-13 | 2016-03-08 | Northrop Grumman Systems Corporation | Multiple power supply systems and methods |
| CN103151941B (en) * | 2013-03-26 | 2015-08-19 | 王彤 | A kind of counter excitation type power superposition circuit |
| CN103942379B (en) * | 2014-04-14 | 2017-05-24 | 大连东软信息学院 | All-digital silicon controlled rectifier controller chip for three-phase alternating-current voltage regulation and rectification |
| CN104201898B (en) * | 2014-09-09 | 2017-12-22 | 嘉兴市纳杰微电子技术有限公司 | A kind of integrated DC/DC power supplys front controller, control method and control system |
| CN204046425U (en) * | 2014-09-09 | 2014-12-24 | 嘉兴市纳杰微电子技术有限公司 | A kind of integrated DC/DC power supply front controller and control system |
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2014
- 2014-09-09 CN CN201410456057.2A patent/CN104201898B/en active Active
- 2014-09-09 CN CN201710765180.6A patent/CN107612339B/en active Active
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612339A (en) * | 2014-09-09 | 2018-01-19 | 嘉兴市纳杰微电子技术有限公司 | Integrated DC/DC power supplys front controller, control method and control system |
| CN107612339B (en) * | 2014-09-09 | 2020-08-07 | 嘉兴市纳杰微电子技术有限公司 | Control method of integrated DC/DC power supply front-end controller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107612339A (en) | 2018-01-19 |
| CN107612338A (en) | 2018-01-19 |
| CN107612338B (en) | 2020-12-18 |
| CN107612339B (en) | 2020-08-07 |
| CN104201898A (en) | 2014-12-10 |
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Denomination of invention: An Integrated DC/DC Power Supply Front-end Controller, Control Method and Control System Effective date of registration: 20190807 Granted publication date: 20171222 Pledgee: China Co truction Bank Corp Jiaxing branch Pledgor: JIAXING NAJIE MICROELECTRONIC TECHNOLOGY CO., LTD. Registration number: Y2019330000007 |
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Date of cancellation: 20210429 Granted publication date: 20171222 Pledgee: China Co. truction Bank Corp Jiaxing branch Pledgor: JIAXING NAJIE MICROELECTRONIC TECHNOLOGY Co.,Ltd. Registration number: Y2019330000007 |