CN108123511A - A kind of vehicle-mounted fast charge chip of multichannel for supporting QC2.0 functions - Google Patents
A kind of vehicle-mounted fast charge chip of multichannel for supporting QC2.0 functions Download PDFInfo
- Publication number
- CN108123511A CN108123511A CN201611087685.3A CN201611087685A CN108123511A CN 108123511 A CN108123511 A CN 108123511A CN 201611087685 A CN201611087685 A CN 201611087685A CN 108123511 A CN108123511 A CN 108123511A
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- CN
- China
- Prior art keywords
- fast charge
- output
- voltage
- module
- circuit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00045—Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
Abstract
The invention discloses a kind of vehicle-mounted fast charge chips of multichannel for supporting QC2.0 functions, it is characterised in that：Including at least two-way DC DC reduction voltage circuits and a fast charge protocol control circuitry, the fast charge protocol control circuitry is integrated in the DC DC reduction voltage circuits in same circuit chip.Integrated multipath reduction voltage circuit of the present invention and a fast charge protocol control circuitry, realize that the power receiving equipment of multiple and different voltages charges simultaneously, and peripheral circuit is simple, is chiefly used on automobile, facilitate user in the wild or charge for digital product during self-driving travel.
Description
Technical field
The present invention relates to a kind of rapid nitriding more particularly to a kind of vehicle-mounted fast charges of multichannel for supporting QC2.0 functions
Chip.
Background technology
With people to it is outdoor and self-driving travel have deep love for and digital product it is increasing, in no alternating current when going out
The charging of digital product becomes particularly necessary when occasion works or travels.However, as the mobile equipment such as intelligent digital product is hard
Part upgrades and the increase of screen size, more and more stronger to battery durable ability requirement, and the charger of traditional 5V 1A is filled to mobile phone
It is more than hour at least to need 3 for full electricity, the charger of 5V 2A to mobile phone full of once electricity also at least need 2 it is small when, this is not
People’s lives demand can be met.
At present, relative maturity, corresponding product also flood the market successively for onboard charger and fast charge technology, e.g., profit
With suitable DC-DC reduction voltage circuits vehicle-mounted 12V/24V voltage conversions are provided to temporary fill for power receiving equipment into 5V voltage outputs
Electricity Functional, still, charging time are very long, while single power receiving equipment can only be supported to charge, and become one and denounce greatly；Or have
It is multichannel, still, interchannel charging voltage interdepends, it is impossible to meet and the power receiving equipment of different fast charges is supported to fill simultaneously
Electricity；The power receiving equipment of relevant support fast charge agreement can only be matched by supporting the Related product of fast charge agreement, and application is single.
With the development of fast charge technology, at present, the digital products such as OPPO, Samsung mobile phone are issued successively supports that QC2.0 is quick
The product of charging, fast charge technology have adapted to the development of smart mobile phone, and new charging experience is presented for user.Corresponding basis is fast
The fast charge chip for filling Protocol Design also comes into being.
The content of the invention
It is an object of the present invention to provide a kind of vehicle-mounted fast charge chip of multichannel for supporting QC2.0 functions, by using the chip,
It can be that multiple power receiving equipments provide respective suitable charging voltage respectively simultaneously, expand use scope, provided to the user quick
Easily charging modes.
To reach above-mentioned at least one purpose, the technical solution adopted by the present invention is：A kind of bilateral for supporting QC2.0 functions
The vehicle-mounted fast charge chip in road, including at least two-way DC-DC reduction voltage circuits and a fast charge protocol control circuitry, the fast charge protocol integrated test system
Circuit is integrated in the DC-DC reduction voltage circuits in same circuit chip.
In above-mentioned technical proposal, including power module, fast charge interface module, two-way voltage reduction module and power switch list
Member, wherein：
The power module input voltage 12V/24V, output are depressured mould with the fast charge interface module, the two-way respectively
Block connects；
The fast charge interface module input terminal is connected with vehicle-mounted charge USB interface, and output connects with voltage reduction module described in two-way
It connects；
Voltage reduction module described in two-way is connected in parallel in the fast charge interface module output terminal, and voltage reduction module described in two-way exports
End is connected respectively with external divider resistance；
The power switch unit includes upper and lower efferent duct, for the power drive of the voltage reduction module.
Further technical solution is that the fast charge interface module includes a control circuit and an interface circuit, the control
Circuit processed sends detection signal to power receiving equipment, judges whether to support fast charge agreement, and passes through and export signal control and be linked into institute
State the ratio of divider resistance in interface circuit；The interface circuit includes an Enable Pin, a feedback signal input terminal, a feedback letter
Number output terminal, first to fourth 4 switching tubes and a resistor voltage divider circuit, the Enable Pin by a phase inverter with it is described
The grid connection of first switch pipe, the drain electrode of switching tube is connected through current-limiting resistance with the feedback signal input terminal, source electrode and
The feedback signal output connection；The resistor voltage divider circuit includes first to fourth divider resistance, wherein first to the 3rd
Divider resistance both ends connect the drain electrode of feedback signal output and the first to the 3rd switching tube, the 4th divider resistance both ends point respectively
It Lian Jie not feedback signal input terminal and feedback signal output；The Enable Pin is passed through after two phase inverters and second switch pipe
Grid be connected, third and fourth switch tube grid is connected respectively with the output signal of the control circuit, second to the 4th opens
Close the source electrode ground connection of pipe.
In above-mentioned technical proposal, the voltage reduction module circuit includes error amplifier, phase compensation unit, comparator, opens
Control unit, oscillator, slope compensation module, current sample amplifier are closed, wherein：,
The error amplifier, positive input access reference voltage, inverting input connect the fast charge interface module
The feedback voltage signal of output, the output of the error amplifier after the phase compensation unit by being sent to the comparator
Normal phase input end；
The comparator, inverting input connect the current sampling signal and slope compensation, and by addition
Device exports after being added；
The switch control unit, it is defeated to adjust according to the output pulse of the oscillator and the comparator output signal
Go out the duty cycle of signal, so as to control the switching sequence of power switch pipe described in rear class；
The current sample amplifier, normal phase input end are connected to power supply, and inverting input is connected to switch foot, output
It holds and is sent to the anti-of the comparator after being added with the slope compensation that the slope compensation module provides by adder
Phase input terminal.
Since above-mentioned technical proposal is used, the present invention has following advantages compared with prior art：
1. the present invention will at least two-way reduction voltage circuit be integrated in QC2.0 fast charge protocol control circuitries in same chip, lead to
The Enable Pin of control QC2.0 fast charge protocol control circuitries is crossed, whether determining QC2.0 interfaces, other agreement cores can be expanded
The application of piece, use scope；
2. using the relatively independent working method of multichannel voltage reduction module, output voltage is unaffected, can be different support soon
The power receiving equipment for filling function provides suitable fast charge voltage respectively, and independently of each other, does not depend on mutually；
3. circuit is internally integrated the divider resistance of periphery to chip internal, using proportion resistor form, according to primary circuit outside
Design resistance value is enclosed, determines output voltage,；
4. output power, peripheral circuit is simple, applied on automobile, facilitate user in the wild or self-driving travel for number
Product charges.
Description of the drawings
Fig. 1 is the electrical block diagram of the embodiment of the present invention one；
Fig. 2 is the electrical block diagram of voltage reduction module in Fig. 1；
Fig. 3 is the control interface structural representation in fast charge interface module in Fig. 1；
Fig. 4 is fast charge interface module circuit structure diagram in Fig. 1；
Fig. 5 is the schematic diagram of circuit connection structure of chip periphery when fast charge interface module works in the embodiment of the present invention one；
Fig. 6 is the circuit connection structure signal of chip periphery when fast charge interface module does not access in the embodiment of the present invention one
Figure.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments：
Embodiment one：Referring to shown in Fig. 1~6, a kind of vehicle-mounted fast charge chip of multichannel for supporting QC2.0 functions, including extremely
Few two-way DC-DC reduction voltage circuits and a fast charge protocol control circuitry, the fast charge protocol control circuitry and DC-DC decompression electricity
Road is integrated in same circuit chip.
As shown in Figure 1, including power module, fast charge interface module, two-way voltage reduction module, two-way drive module and two groups
Power switch pipe, wherein：Power module the exemplary input voltage 12V or 24V, the voltage that one representative value of output is 5V are
Fast charge interface module, frequency control module, voltage reduction module and drive module provide stable power supply, while this output voltage connects
Can be simultaneously external other circuit power supplies to external terminal VCC_5V；The fast charge interface module input terminal is filled with vehicle-mounted
Electric USB interface connection, output are connected with voltage reduction module described in two-way；Voltage reduction module described in two-way is exported according to fast charge interface module
Control signal and VOUT1/FB1 (VOUT2/FB2) foot provide output voltage feedback signal export control signal to drive mould
Block；Two power switch pipes that the control signal driving that the drive module is exported according to voltage reduction module is attached thereto；Every group of work(
Rate switching tube includes a PMOS tube and a NMOS tube, the grid of pipe and driven respectively by drive module, wherein PMOS tube
Source electrode is connected to input power by pin VIN1 (or VIN2), and the drain electrode of PMOS tube is connected to outside by pin SW1 (or SW2)
The drain electrode of one end of portion's filter inductance, wherein NMOS tube is connected to the one of filtered external inductance again by pin SW1 (or SW2)
End, the source electrode of NMOS tube are connected to ground by pin PGND1 (or PGND2).
As shown in Fig. 2, the voltage reduction module circuit mainly includes error amplifier, phase compensation unit, comparator, switch
Control unit, oscillator, slope compensation module, current sample amplifier.
The positive input of error amplifier is the reference voltage of 1.2V, and inverting input connection is control interface
The feedback voltage signal of output, the output of error amplifier are sent to the normal phase input end of comparator by phase compensation afterwards, than
The output after to be current sampling signal is added with slope compensation by adder connected compared with the inverting input of device is believed
Number.Switch control unit according to the output pulse of oscillator and the output signal of comparator come adjust output signal CON1 (or
CON2 duty cycle), so as to control the switching sequence of rear class power switch pipe.The normal phase input end connection of current sample amplifier
To power supply VIN1 (or VIN2), inverting input is connected to switch foot SW1 (or SW2), and effect is turned in power tube PMOS
When gather the current signal that flows through, and after it is added with the slope compensation that slope compensation module provides by adder
It is sent to the inverting input of comparator.
Entire voltage reduction module uses the BUCK frameworks of typical Peak Current-Mode Controlled Circuit, has simple compensation, and loop is steady
Calmly, the advantages that transient response is quick..
As shown in Figure 3,4, the fast charge interface module includes a control circuit and an interface circuit, and the control circuit is led to
It crosses pin DP1 (or DP2) and DM1 (or DM2) and external power receiving equipment communicates, judge whether external power receiving equipment is supported soon
Agreement is filled, the output signal of control circuit is two switching signals KG1 and KG2, is output in interface circuit and controls divider resistance
Access ratio；The interface circuit includes an Enable Pin EN_QC, a feedback signal input terminal VOUT1/FB1 (or VOUT2/
FB2), a feedback signal output FB_IN1 (or FB_IN2), four switching tubes (M1~M4) and a resistor voltage divider circuit.Make
Energy end EN_QC is connected after a phase inverter with the grid of the switching tube M1, and the drain electrode of switching tube M1 passes through a limit
Leakage resistance is connected with the feedback signal input terminal VOUT1/FB1 (or VOUT2/FB2), and source electrode is exported with the feedback signal
FB_IN1 (or FB_IN2) is held to connect；The bleeder circuit includes divider resistance R1~R4, and wherein R1~R3 both ends connect respectively
The drain electrode of feedback signal output FB_IN1 (or FB_IN2) and switching tube M2~M4, R4 both ends connect feedback signal input respectively
Hold VOUT1/FB1 (or VOUT2/FB2) and feedback signal output FB_IN1 (or FB_IN2)；Enable Pin EN_QC passes through two
It is connected with the grid of switching tube M2 after phase inverter, the grid of the switching tube M3 and M4 output signal with the control circuit respectively
KG1 is connected with KG2, the source electrode ground connection of switching tube M2~M4.
When this charger by USB connecting lines with mobile phone when the equipment that outside needs charge is connected, power receiving equipment detection
On USB interface D+ D- port levels variation, judge whether charger supports high pass QC2.0 fast charge protocols, if support,
Charger exports handshake, voltage signal needed for subsequent power receiving equipment output.For this circuit, divider resistance configuration R1=
It is three independent switch controlleds inside 145K, R2=145K, R3=187.5K, R4=.When internal three switching tubes (M2
M3 M4) when being in different states, the resistance on feedback signal output FB_IN1 (FB_IN2) to ground is different, for drop
The divider resistance ratio of feedback signal is different for die block, and VOUT ends can export different VOUT voltages to power receiving equipment
It charges.For support QC2.0 equipment, charging voltage can reach 5V 9V 12V.
As QC_EN=1, M1 is closed, and feedback signal input terminal VOUT1/FB1 (or VOUT2/FB2) is connected in periphery
During VOUT ports, the sampled voltage of feedback signal output FB_IN1 (or FB_IN2) outputs is obtained by VOUT after electric resistance partial pressure
It arrives, the output voltage of acquiescence is 5.1V, output the signal KG1 and KG2 of the control circuit when the mobile phone of access different agreement
Feedback signal output FB_IN1 (or FB_IN2) can be controlled to ground resistance R2, the access of R3, so that the output of VOUT ends is different
Voltage, peripheral circuit are as shown in Figure 5.
As QC_EN=0, M1 conductings, feedback signal input terminal VOUT1/FB1 (or VOUT2/FB2) and feedback signal are defeated
Outlet FB_IN1 (or FB_IN2) short circuits, the oversampling ratio of output voltage is by the external divider resistance on external FB ports at this time
R5 R6, R7 R8 partial pressure determine, as shown in Figure 6.
QC2.0 fast charge interface sequences are as follows：
(1), after the mobile phone of QC2.0 is supported to detect and be connected with charger, HVDCP patterns can be started, 0.6V is added on D+
Voltage.
(2), after charger senses the 0.6V voltages on D+, short-circuit D+ D-, D- voltages drop to 0.6V, continue 1.28s
Afterwards, charger D+ D- disconnect, D+ keeps 0.6V at this time, and D- voltages fall to 0V.
(3), after mobile phone finds that D- voltages drop to 0V, according to parameter preset start to export D+ D- voltages.
(4), charger according to the D+ detected D- voltage values, export different charging voltages.
D+ D- voltages and switch relation it is as follows：
In this circuit, using two pieces of independent BUCK Control voltage reduction modules, output voltage is mutual indepedent, by fast
Fill detection of the interface to power receiving equipment, obtain corresponding different power receiving equipments D+ D- voltages, control switching tube in sample circuit
It opens and closes, each suitable voltage is provided respectively for power receiving equipment.
Claims (4)
1. a kind of vehicle-mounted fast charge chip of multichannel for supporting QC2.0 functions, it is characterised in that：It is depressured including at least two-way DC-DC
Circuit and a fast charge protocol control circuitry, the fast charge protocol control circuitry are integrated in same with the DC-DC reduction voltage circuits
In circuit chip.
2. the multichannel vehicle-mounted fast charge chip according to claim 1 for supporting QC2.0 functions, it is characterised in that：Including electricity
Source module, fast charge interface module, two-way voltage reduction module and power switch unit, wherein：
The power module input voltage 12V/24V, the output terminal of power module respectively with the fast charge interface module, described two
Road voltage reduction module connection；
The fast charge interface module input terminal is connected with vehicle-mounted charge USB interface, and output terminal is connected with voltage reduction module described in two-way；
Voltage reduction module described in two-way is connected in parallel in the fast charge interface module output terminal, voltage reduction module output terminal described in two-way point
It is not connected with external divider resistance；
The power switch unit includes upper efferent duct, lower efferent duct, for the power drive of the voltage reduction module.
3. the multichannel vehicle-mounted fast charge chip according to claim 2 for supporting QC2.0 functions, it is characterised in that：It is described fast
Filling interface module includes a control circuit and an interface circuit, and the control circuit sends detection signal to power receiving equipment, judges
Whether support fast charge agreement, and pass through the ratio that signal control is linked into divider resistance in the interface circuit that exports；It is described to connect
Mouthful circuit includes an Enable Pin, a feedback signal input terminal, a feedback signal output, first switch pipe, second switch pipe, the
Three switching tubes, the 4th switching tube and a resistor voltage divider circuit, the Enable Pin is by a phase inverter and the first switch pipe
Grid connection, the drain electrode of switching tube is connected through current-limiting resistance with the feedback signal input terminal, source electrode and the feedback letter
The connection of number output terminal；The resistor voltage divider circuit includes the first divider resistance, the second divider resistance, the 3rd divider resistance, the 4th
Divider resistance, wherein the first to the 3rd divider resistance both ends connect feedback signal output and the first to the 3rd switching tube respectively
Drain electrode, the 4th divider resistance both ends connect feedback signal input terminal and feedback signal output respectively；The Enable Pin passes through two
It is connected after a phase inverter with the grid of second switch pipe, the 3rd switching tube and the 4th switch tube grid are electric with the control respectively
The output signal on road is connected, the source electrode ground connection of tetra- switching tubes of second switch Guan Zhi.
4. the multichannel vehicle-mounted fast charge chip according to claim 2 for supporting QC2.0 functions, it is characterised in that：The drop
Die block circuit includes error amplifier, phase compensation unit, comparator, switch control unit, oscillator, slope-compensation mould
Block, current sample amplifier, wherein,
The error amplifier, positive input access reference voltage, inverting input connect the fast charge interface module output
Feedback voltage signal, the output of the error amplifier is by being sent to the comparator just after the phase compensation unit
Phase input terminal；
The comparator, inverting input connects the current sampling signal and slope compensation, and passes through adder phase
In addition export afterwards；
The switch control unit adjusts output letter according to the output pulse of the oscillator and the comparator output signal
Number duty cycle, so as to control the switching sequence of power switch pipe described in rear class；
The current sample amplifier, normal phase input end are connected to power supply, and inverting input is connected to switch foot, output terminal with
The slope compensation that the slope compensation module provides is sent to comparator reverse phase after being added by adder is defeated
Enter end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611087685.3A CN108123511A (en) | 2016-11-30 | 2016-11-30 | A kind of vehicle-mounted fast charge chip of multichannel for supporting QC2.0 functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611087685.3A CN108123511A (en) | 2016-11-30 | 2016-11-30 | A kind of vehicle-mounted fast charge chip of multichannel for supporting QC2.0 functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108123511A true CN108123511A (en) | 2018-06-05 |
Family
ID=62227393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611087685.3A Pending CN108123511A (en) | 2016-11-30 | 2016-11-30 | A kind of vehicle-mounted fast charge chip of multichannel for supporting QC2.0 functions |
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| Country | Link |
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| CN (1) | CN108123511A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109066898A (en) * | 2018-09-13 | 2018-12-21 | 珠海市微半导体有限公司 | Integrate the charging connection and chip and charging connecting device of a variety of fast charge agreements |
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| JP2008228461A (en) * | 2007-03-13 | 2008-09-25 | Toshiba Corp | Dc-dc converter |
| JP2011193555A (en) * | 2010-03-11 | 2011-09-29 | Toshiba Tec Corp | Voltage variable circuit and information processor |
| CN204103576U (en) * | 2014-07-15 | 2015-01-14 | 深圳市顶牛电子科技有限公司 | Charger |
| JP2015065801A (en) * | 2013-08-27 | 2015-04-09 | 株式会社デンソー | Switching power supply unit |
| CN206313477U (en) * | 2016-11-30 | 2017-07-07 | 无锡华润矽科微电子有限公司 | It is a kind of to support that the multichannel of QC2.0 functions is vehicle-mounted and fill chip soon |
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2016
- 2016-11-30 CN CN201611087685.3A patent/CN108123511A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008228461A (en) * | 2007-03-13 | 2008-09-25 | Toshiba Corp | Dc-dc converter |
| JP2011193555A (en) * | 2010-03-11 | 2011-09-29 | Toshiba Tec Corp | Voltage variable circuit and information processor |
| JP2015065801A (en) * | 2013-08-27 | 2015-04-09 | 株式会社デンソー | Switching power supply unit |
| CN204103576U (en) * | 2014-07-15 | 2015-01-14 | 深圳市顶牛电子科技有限公司 | Charger |
| CN206313477U (en) * | 2016-11-30 | 2017-07-07 | 无锡华润矽科微电子有限公司 | It is a kind of to support that the multichannel of QC2.0 functions is vehicle-mounted and fill chip soon |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109066898A (en) * | 2018-09-13 | 2018-12-21 | 珠海市微半导体有限公司 | Integrate the charging connection and chip and charging connecting device of a variety of fast charge agreements |
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