CN107611932A - IC apparatus and its establishing method - Google Patents
IC apparatus and its establishing method Download PDFInfo
- Publication number
- CN107611932A CN107611932A CN201610539748.8A CN201610539748A CN107611932A CN 107611932 A CN107611932 A CN 107611932A CN 201610539748 A CN201610539748 A CN 201610539748A CN 107611932 A CN107611932 A CN 107611932A
- Authority
- CN
- China
- Prior art keywords
- reference signal
- module
- electrically connected
- abnormal reference
- signal
- Prior art date
- 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.)
- Granted
Links
Abstract
A kind of IC apparatus and its establishing method.IC apparatus includes detecting pin position, control circuit module and drive control module.Detect pin position parallel connection non-essential resistance and external capacitive, control circuit module connection detecting pin position to detect non-essential resistance across voltage to produce the first abnormal reference signal, and control circuit module is detecting the discharge time of external capacitive to produce the second abnormal reference signal, drive control module according to the first feedback signal and the first abnormal reference signal to judge whether the first power switching module occurs circuit abnormality, and drive control module according to the second feedback signal and the second abnormal reference signal to judge whether the second power switching module occurs circuit abnormality.Whereby, IC apparatus can set two circuit abnormality reference values through a pin position.
Description
Technical field
It is relevant a kind of with circuit guarantor the invention relates to a kind of IC apparatus and its establishing method, and especially
The IC apparatus and its establishing method of protective function.
Background technology
DC boost converter and DC decompression converter are voltage conversion device common in power domain, typically all can
The circuit protection functions such as overcurrent, overvoltage or excess temperature are provided with, protection circuit is safe to use whereby.
Include transistor and the integrated electricity of responsible controlling transistor keying in the known converter with overcurrent protection
Road device, and IC apparatus includes overcurrent comparator and overcurrent setting apparatus, overcurrent setting apparatus connects through a pin position
A non-essential resistance is connect to set an overcurrent reference signal, and overcurrent comparator is electrically connected with overcurrent setting apparatus to receive
Current reference signal, and overcurrent comparator is electrically connected with transistor to receive a feedback signal, overcurrent comparator compares back
Credit number and overcurrent reference signal are to determine whether that overcurrent produces.If have overcurrent generation, IC apparatus is then
Transistor can be closed, reaches the effect of protection circuit.
However, above-mentioned known IC apparatus can only set one group of overcurrent protection reference signal, if need to set another
One group of different overcurrent protection signal, and another pin position must be recycled to detect another non-essential resistance to set, it can so make
Internal circuit and external circuit into IC apparatus complicate.
In view of this, how effectively using the different circuit abnormality reference signal of single pin position setting, then into related industry
The target that person makes great efforts.
The content of the invention
The present invention provides a kind of IC apparatus and its establishing method, through single pin position parallel connection non-essential resistance and outside
Electric capacity, and two groups of different circuit abnormality reference signals can be set.
A kind of IC apparatus is provided according to one embodiment of the present invention, to control one first power switching module
And one second power switching module, IC apparatus include a detecting pin position, a control circuit module and a drive control mould
Block.A pin position non-essential resistance in parallel and an external capacitive are detected, control circuit module is electrically connected with detecting pin position, control circuit mould
Block is to detect the one of non-essential resistance across voltage to produce one first abnormal reference signal, and control circuit module is outer to detect
One discharge time of portion's electric capacity is to produce one second abnormal reference signal.Drive control module is electrically connected with the first electrical power conversion mould
Block is to receive one first feedback signal and be electrically connected with the second power switching module to receive one second feedback signal, drive control
Module is electrically connected with control circuit module to receive the first abnormal reference signal and the second abnormal reference signal.Wherein drive control
Module according to the first feedback signal and the first abnormal reference signal to judge whether the first power switching module occurs circuit abnormality,
And drive control module according to the second feedback signal with the second abnormal reference signal to judge whether the second power switching module is sent out
Raw circuit abnormality, drive control module simultaneously close when circuit abnormality occurs for the first power switching module or the second power switching module
Close the first power switching module or the second power switching module.
Whereby, IC apparatus can set the purpose of two circuit abnormality reference values up to only transmitting a pin position.
According to foregoing IC apparatus, wherein drive control module can include one first protection location and one second guarantor
Protect unit.First protection location can include a first comparator, and first comparator is electrically connected with control circuit module to receive the
One abnormal reference signal and be electrically connected with the first power switching module to receive the first feedback signal, first comparator is according to first
Feedback signal with the first abnormal reference signal judges whether that circuit abnormality occurs and transmission one first judges that signal gives control circuit
Module.Second protection location can include one second comparator, and the second comparator is electrically connected with control circuit module to receive second
Abnormal reference signal and be electrically connected with the second power switching module to receive the second feedback signal, the second comparator is according to second time
Credit number with the second abnormal reference signal judges whether that circuit abnormality occurs and transmission one second judges that signal gives control circuit mould
Block.Control circuit module can include a detecting unit, detecting unit to by change non-essential resistance across voltage from a simulation lattice
Formula switchs to a number format.
According to foregoing IC apparatus, wherein control circuit module can also include a digital circuit unit, and detecting is single
It is first to be electrically connected with digital circuit unit, and detecting unit produces an electric discharge completion signal and digital circuit unit acquirement is equal to RC
The discharge time of time constant, wherein digital circuit unit will be will be converted to the second abnormal reference signal discharge time.It is and outer
Portion's electric capacity can have an initial voltage value in filling under full state, detecting unit can include a bleeder circuit, and bleeder circuit includes one
First internal resistance and one second internal resistance, the first internal resistance are electrically connected with digital circuit unit, the second internal resistance bag
The first internal resistance is electrically connected with containing a partial pressure contact, and a partial pressure of partial pressure contact is the 37% of initial voltage value, wherein detecing
Survey unit and electric discharge completion signal is produced when external capacitive voltage is equal to partial pressure.In addition, the first abnormal reference signal and second different
Normal reference signal can be all overcurrent reference signal.
A kind of IC apparatus is provided according to another embodiment of the present invention, it is controlling one first electrical power conversion
Module and one second power switching module, IC apparatus include a detecting pin position, a control circuit module and a driving control
Molding block.Detect a pin position non-essential resistance in parallel and an external capacitive, control circuit module be electrically connected with detecting pin position and comprising
One detecting unit and a digital circuit unit, detecting unit are electrically connected with detecting pin position, and detecting unit is detecting non-essential resistance
One across voltage, and detecting unit completes signal to detect the discharge condition of external capacitive to produce an electric discharge.Digital circuit
Unit is electrically connected with detecting unit, and control circuit module is different to produce one second according to electric discharge completion signal one discharge time of acquirement
Normal reference signal and according to across voltage one first abnormal reference signal of generation.Digital circuit unit includes one first buffer, one
Second buffer and a man-machine interface, the first buffer is to store the first abnormal reference signal, and the second buffer is storing
Second abnormal reference signal, man-machine interface are electrically connected with the first buffer and the second buffer and for the abnormal reference letters of modification first
Number or the second abnormal reference signal.Drive control module is electrically connected with the first power switching module to receive one first feedback signal
And the second power switching module is electrically connected with to receive one second feedback signal, drive control module is electrically connected with the first buffer
To receive the first abnormal reference signal and be electrically connected with the second buffer to receive the second abnormal reference signal.Wherein drive control
Module according to the first feedback signal and the first abnormal reference signal to judge whether the first power switching module occurs circuit abnormality,
And drive control module according to the second feedback signal with the second abnormal reference signal to judge whether the second power switching module is sent out
Raw circuit abnormality, drive control module simultaneously close when circuit abnormality occurs for the first power switching module or the second power switching module
Close the first power switching module or the second power switching module.
According to foregoing IC apparatus, wherein detecting unit is electrically connected with the first buffer and to by non-essential resistance
Be converted to a number format from an analog format to be stored in the first buffer across voltage.Detecting unit produces electric discharge and completes signal
It can obtain digital circuit unit and be equal to discharge times of RC time constants, digital circuit unit is will change discharge time
It is the second abnormal reference signal to be stored in the second buffer.
According to foregoing IC apparatus, wherein external capacitive can have an initial voltage value in filling under full state, detect
A bleeder circuit can be included by surveying unit, and bleeder circuit includes one first internal resistance and one second internal resistance, the first inside electricity
Resistance is electrically connected with digital circuit unit, and the second internal resistance includes a partial pressure contact and is electrically connected with the first internal resistance, and partial pressure
One partial pressure of contact is the 37% of initial voltage value, and wherein detecting unit is produced when external capacitive voltage is equal to partial pressure and discharged
Into signal.Drive control module can include one first protection location and one second protection location, and the first protection location includes one the
One digital analog converter is electrically connected with the first buffer and the first abnormal reference signal is switched into analog format, and second protects
Protect unit and include one second digital analog converter the second buffer of electric connection and the second abnormal reference signal to be switched to
Analog format.And the first buffer and the second buffer can be volatile memory (volatile memory), fast flash memory bank
(flash memory), the electronics formula of erasing can make carbon copies read-only memory (Electrically-Erasable Programmable
Read-Only Memory), static RAM (Static Random-Access Memory) or any memory work(
Can circuit.
A kind of circuit abnormality reference settings method is provided according to another embodiment of the present invention to fill for an integrated circuit
Put, wherein IC apparatus is with a detecting pin position non-essential resistance in parallel and an external capacitive, and IC apparatus includes
One control circuit module is electrically connected with detecting pin position, and circuit abnormality reference settings method includes a charge step, one first exception
Reference signal setting procedure, a discharge step and one second abnormal reference signal setting procedure.Charge step by non-essential resistance and
External capacitive is charged, the first abnormal reference signal setting procedure make control circuit module detecting non-essential resistance one across voltage
To obtain one first abnormal reference signal, discharge step makes external capacitive be discharged through non-essential resistance, the second abnormal reference
Signal setting procedure makes a discharge time of control circuit module detecting external capacitive to obtain one second abnormal reference signal.
According to foregoing circuit abnormality reference settings method, wherein the first abnormal reference signal setting procedure can be included the
One abnormal reference signal is converted to the first abnormal reference signal of number format and storage.Second abnormal reference signal setting procedure bag
Containing a time switch process, a resistance removal process and a storing step, time switch process is outer through detecting unit detecting
The discharge condition of portion's electric capacity, and control circuit module keeps in value according to a frequency conversion discharge time to obtain one, resistance eliminates
The non-essential resistance factor that step makes control circuit module be eliminated using the first abnormal reference signal in temporary value is different to obtain second
Normal reference signal, storing step store the second abnormal reference signal.
According to foregoing circuit abnormality reference settings method, wherein external capacitive has an initial voltage in filling under full state
Value, time switch process can include a partial pressure step and a detecting step, and partial pressure step is through the partial pressure for starting detecting unit
Circuit makes a partial pressure of bleeder circuit be the 37% of initial voltage value, and detecting step is detected external capacitive and discharged from initial voltage value
To the time of partial pressure to obtain discharge time.
Brief description of the drawings
Fig. 1 illustrates a kind of outline block schematic diagram of IC apparatus according to an embodiment of the present invention；
Fig. 2 illustrates the block schematic diagram of Fig. 1 IC apparatus；
Fig. 3 illustrates the block schematic diagram of Fig. 2 detecting unit；
Fig. 4 illustrates a kind of block schematic diagram of IC apparatus according to another embodiment of the present invention；
Fig. 5 illustrates a kind of application schematic diagram of IC apparatus according to a further embodiment of the present invention；
Fig. 6 illustrates a kind of step flow chart of circuit abnormality reference settings method according to another embodiment of the present invention；
Fig. 7 illustrates the step flow chart of Fig. 6 step 620；And
Fig. 8 illustrates the step flow chart of Fig. 6 step 640.
Embodiment
It the following drawings illustrate embodiments of the invention.As clearly stated, the details in many practices will be
Illustrate in the lump in described below.However, reader is not it will be understood that the details in these practices is applied to limit the present invention.
That is in section Example of the present invention, the details in these practices is non-essential.In addition, for the sake of simplifying accompanying drawing, one
A little known usual structures will be illustrated in a manner of simply illustrating in the accompanying drawings with element；And the element repeated will likely use
It is identically numbered expression.
Fig. 1, Fig. 2 and Fig. 3 are referred to, wherein Fig. 1 illustrates a kind of IC apparatus according to an embodiment of the present invention
100 outline block schematic diagram, Fig. 2 illustrate the block schematic diagram of Fig. 1 IC apparatus 100, and Fig. 3 illustrates Fig. 2 detecting
The block schematic diagram of unit 300.IC apparatus 100 is controlling one first power switching module MD1 and one second electric power
Modular converter MD2, IC apparatus 100 include a detecting pin position P7, a control circuit module 200 and a drive control module
500.A pin position P7 parallel connection one non-essential resistance R1 and external capacitive C1 are detected, control circuit module 200 is electrically connected with detecting pin position
P7, control circuit module 200 control to detect the one of non-essential resistance R1 across voltage to produce one first abnormal reference signal
Circuit module 200 is detecting an external capacitive C1 discharge time to produce one second abnormal reference signal.Drive control mould
Block 500 is electrically connected with the first power switching module MD1 to receive one first feedback signal PH1 and be electrically connected with the second electrical power conversion
For module MD2 to receive one second feedback signal PH2, drive control module 500 is electrically connected with control circuit module 200 to receive the
One abnormal reference signal and the second abnormal reference signal.Wherein drive control module 500 is according to the first feedback signal PH1 and first
Abnormal reference signal is to judge whether the first power switching module MD1 occurs circuit abnormality, and drive control module 500 is according to
Two feedback signal PH2 and the second abnormal reference signal are driven with judging whether the second power switching module MD2 occurs circuit abnormality
Control module 500 simultaneously closes first when circuit abnormality occurs for the first power switching module MD1 or the second power switching module MD2
Power switching module MD1 or the second power switching module MD2.
Whereby, IC apparatus 100 with detect pin position P7 simultaneously a parallel connection one non-essential resistance R1 and external capacitive C1, and
Through control circuit module 200 detect non-essential resistance R1 across voltage to produce the first abnormal reference signal, and detecting external electrical
Hold C1 discharge time to produce the second abnormal reference signal, may achieve and only joined with the different circuit abnormalities of single pin position setting two
Examine the purpose of value.The thin portion structure and the mode of action of IC apparatus 100 will be described in greater detail below.
In the present embodiment, IC apparatus 100 also includes multiple pin position P1, P2, P3, P4, P5, P6, the first electric power
Modular converter MD1 includes a first transistor M1 and a second transistor M2, the first transistor M1 and is electrically connected with pin position P1, and second
Transistor M2 is electrically connected with pin position P2, the second power switching module MD2 and includes a third transistor M3 and one the 4th transistor M4,
Third transistor M3 is electrically connected with pin position P4, and the 4th transistor M4 is electrically connected with pin position P5, and drive control module 500 can include
First power control unit 530 and one second power control unit 540.First power control unit 530 electric connection pin position P1,
P2 to control the first transistor M1 and second transistor M2 respectively, the second power control unit 540 be electrically connected with pin position P4, P5 with
Third transistor M3 and the 4th transistor M4 is controlled respectively, through the first power control unit 530 and the second power control unit
540 the first transistor M1, second transistor M2, third transistor M3 and the 4th transistor M4 able to turn on or off.
In more detail, the first transistor M1, second transistor M2, third transistor M3 and the 4th transistor M4 are all field
Imitate transistor (MOSFET), the first transistor M1, second transistor M2, third transistor M3 and the 4th transistor M4 grid point
Not electricity Xing Lianjie pin position P1, P2, P3, P4, and the first power control unit 530 and the second power control unit 540 can produce letter
Number to control the first transistor M1, second transistor M2, third transistor M3 and the 4th transistor M4 conducting and disconnection, but
One transistor M1, second transistor M2, third transistor M3 and the 4th transistor M4 pattern are not limited.
Drive control module 500 can also include one first protection location 510 and one second protection location 520.First protection
Unit 510 includes a first comparator 512 and is electrically connected with control circuit module 200 to receive the first abnormal reference signal, and the
One comparator 512 is electrically connected with the first power switching module MD1 to receive the first feedback signal PH1, the first ratio through pin position P3
Generation circuit abnormality and transmission one first are judged whether according to the first feedback signal PH1 and the first abnormal reference signal compared with device 512
Judge that signal OC1 gives control circuit module 200.Second protection location 520 includes one second comparator 522 and is electrically connected with control electricity
Road module 200 is to receive the second abnormal reference signal, and the second comparator 522 is electrically connected with the second electrical power conversion through pin position P6
Module MD2 to receive the second feedback signal PH2, according to the abnormal references of the second feedback signal PH2 and second believe by the second comparator 522
Number judge whether circuit abnormality occurs and transmits one second to judge that signal OC2 gives control circuit module 200.
As shown in Fig. 2 control circuit module 200 can include a detecting unit 300 and a digital circuit unit 400, numeral
Circuit unit 400 includes one first buffer 410 and one second buffer 420, and the first buffer 410 is abnormal for storage first
Reference signal, the second buffer 420 is for the second abnormal reference signal of storage.First buffer 410 and the second buffer 420 can be
Volatile memory, fast flash memory bank, the electronics formula of erasing can make carbon copies read-only memory (Electrically-Erasable, static state
Random access memory or any memory function circuit.Detecting unit 300 is electrically connected with detecting pin position P7, and detecting unit 300 is used
With detect non-essential resistance R1 across voltage, and detecting unit 300 detect external capacitive C1 discharge condition it is complete to produce an electric discharge
Into signal, digital circuit unit 400 calculates external capacitive C1 discharge time spacing, and discharge time distance computation is from external capacitive
C1 starts to discharge into digital circuit unit 400 and receive to discharge untill completing signal, wherein signal preferably ratio is completed in electric discharge
Compared with external capacitive C1 be discharged to when filling full 37%, the back will have a more detailed explanation.
Detecting unit 300 can be used to non-essential resistance R1 being converted to a number format from an analog format across voltage, detect
Survey unit 300 is electrically connected with digital circuit unit 400 and producing electric discharge completion signal is equal to the acquirement of digital circuit unit 400
The discharge time of one times of RC time constant, then will be converted to the second abnormal reference letter discharge time through digital circuit unit 400
Number, and it is stored in the second buffer 420.
Specifically, as shown in figure 3, when an electric current I1 is allowed through detecting pin position P7 inflow non-essential resistance R1 and outside
During electric capacity C1, external capacitive C1 is charged, and external capacitive C1 has an initial voltage value, detecting unit in filling under full state
300 include a bleeder circuit 324, and bleeder circuit 324 includes one first internal resistance R2 and one second internal resistance R3, in first
Portion resistance R2 is electrically connected with digital circuit unit 400, and the second internal resistance R3 includes a partial pressure contact A1 and is electrically connected with first
Portion resistance R2, and a partial pressure contact A1 partial pressure is the 37% of initial voltage value, and detecting unit 300 is in external capacitive C1 electricity
Pressure produces electric discharge when being equal to partial pressure and completes signal.
More careful says, detecting unit 300 can also include one the 3rd comparator 321, one the 3rd digital analog converter 322
And a switches set 323, switches set 323 include a first switch SW1, a second switch SW2 and one the 3rd switch SW3.Digital electricity
The electric connection first switch of road unit 400 SW1, second switch SW2, the 3rd switch SW3 to control first switch SW1, second to open
SW2, the 3rd switch SW3 keying are closed, digital circuit unit 400 is also electrically connected with the 3rd digital analog converter 322 and the 3rd
Comparator 321；First switch SW1 is electrically connected with the 3rd comparator 321 and partial pressure contact A1；Second switch SW2 is electrically connected with the
Three digital analog converters 322 and the 3rd comparator 321；Detect pin position P7 and be electrically connected with the 3rd switch SW3 and the 3rd comparator
321；And bleeder circuit 324 is electrically connected with the 3rd digital analog converter 322.
Electric current I1 is allowed to flow into non-essential resistance R1 and external capacitive when the 3rd switch SW3 is controlled by digital circuit unit 400
During C1, second switch SW2 is also controlled by digital circuit unit 400 and channel status is presented, and now the 3rd comparator 321 is acceptable outer
Portion electric capacity C1 initial voltage value (be equal to non-essential resistance R1 across voltage) and the signal SG1 from second switch SW2 with
Compare both sizes, and pass result of the comparison back digital circuit unit 400, be that can pass through two points with digital circuit unit 400
Search method (binary search) changes signal SG1 size, to confirm the size of initial voltage value and retain it, and the 3rd
Digital analog converter 322 be for the signal SG1 for transmitting digital circuit unit 400 by number format switch to analog format with
Compare for the 3rd comparator 321.
The confirmation external capacitive of digital circuit unit 400 C1 initial voltage can be made through the 3rd digital analog converter 322
The size of value, due to this value be equal to non-essential resistance R1 across voltage, and the data format for being stored in digital circuit unit 400 is
Number format, therefore may achieve and will change the non-essential resistance R1 purpose for switching to a number format from an analog format across voltage,
First abnormal reference signal can be obtained by following formula (1)：
Wherein OCR1 represents the first abnormal reference signal, and I represents electric current I1 numerical value, and R represents non-essential resistance R1 resistance
Value, and Vsb represents the single order magnitude of voltage of the 3rd digital analog converter 322.For example, electric current I1 numerical value is 40 micromicroamperes of (μ
A), digital circuit unit 400 is to change benchmark with 8 bits (8bit), and a reference voltage of the 3rd digital analog converter 322
For 2.048 volts (V), then the single order magnitude of voltage Vsb of the 3rd digital analog converter 322 is 8 millivolts (mv), therefore formula (1) can be further
Represent such as formula (2)：
Therefore if non-essential resistance R1 resistance value R is 10 kilohms (Kohm), the first abnormal reference signal is 50,
User can select the non-essential resistance R1 with different resistance values on demand, to set the abnormal reference signal of different first, example
Such as, the resistance value R of non-essential resistance is 30 kilohms, then the first abnormal reference signal can be 150.
When the 3rd switch SW3 and second switch SW2 is controlled be changed to off state when, first switch SW1 is by digital circuit list
The control of member 400 is changed to channel status, and now external capacitive C1 will start to be discharged through non-essential resistance R1.Due to initial voltage
Value is retained by digital circuit unit 400 no longer to be changed, and partial pressure contact A1 partial pressure is also fixed and passes through first switch SW1 by the 3rd
Comparator 321 receives.Therefore external capacitive C1 voltage can decline in discharge process, and when its voltage drops to and partial pressure
When contact A1 partial pressure is identical, the transmission electric discharge of the 3rd comparator 321 completes signal to digital circuit unit 400, and causes numeral
The discharge time for the external capacitive C1 that circuit unit 400 obtains.
Because the self discharge of digital circuit unit 400 starts calculating state in the time always, therefore work as digital circuit list
Member 400, which detects electric discharge, which to be completed to produce after signal is completed in electric discharge, can obtain discharge time, and first according to digital circuit unit 400
One frequency conversion discharge time, temporary value can be obtained by formula (3) to obtain a temporary value：
CNT represents temporary value；C represents external capacitive C1 capacitance；RCtc represents one times of RC time number, and it is equal to R
It is multiplied by C；Ctime represents the cycle time of digital circuit unit 400, and it is the inverse of frequency；F represents frequency.
Through temporary value, the second abnormal reference signal can be further obtained, it can be obtained by formula (4)：
OCR2 in formula (2) represents the second abnormal reference signal, and OCR1 represents the first abnormal reference signal, therefore is obtaining
After temporary value, the non-essential resistance R1 in temporary value can be influenceed to eliminate by the first abnormal reference signal, second is abnormal with reference to letter
Number only influenceed by external capacitive C1, therefore assume the present embodiment in frequency be 50Mhz, then formula (2) can be further by formula (5) table
Show：
OCR2=10C (5).
As can be seen here, the first abnormal reference signal is determined by non-essential resistance R1 completely, the second abnormal reference signal completely by
External capacitive C1 is determined, is the numerical value that can arbitrarily change external capacitive C1 on demand with user, without considering non-essential resistance
R1 change because.
And in other embodiments, circuit for detecting 300 can additionally comprise an analog-digital converter (not illustrating) and electrically connect
The first buffer 410 is connect, non-essential resistance R1 can also be switched to across voltage from an analog format through analog-digital converter
One number format is simultaneously stored in the first buffer 410, and the single order voltage of wherein analog-digital converter also may be set to and the 3rd number
Word analog converter 322 is identical, then can also obtain shown in for example above-mentioned formula (2) of the first abnormal reference signal.
In addition, in the present embodiment, the first protection location 510 can be also electrical comprising one first digital analog converter 511
Connect the first buffer 410 and the first abnormal reference signal is switched into analog format, the second protection location 520 can be included also
One second digital analog converter 521 is electrically connected with the second buffer 420 and to switch to simulate the second abnormal reference signal
Form.
Specifically, the first of the present embodiment the abnormal reference signal and the second abnormal reference signal are all overcurrent with reference to letter
Number, the first digital analog converter 511 is electrically connected with the first buffer 410 and first comparator of control circuit module 200
512, first comparator 512 is electrically connected with the first transistor M1 through pin position P3, and the first digital analog converter 511 is received and come from
First abnormal reference signal of the first buffer 410 and the first abnormal reference signal is switched into analog format, first compares
Device 512 according to the first feedback signal PH1 and the first abnormal reference signal with determine whether overcurrent produce.Therefore, when first
When comparator 512 judges to have overcurrent generation, the first judgement signal OC1 can be transmitted to control circuit module 200, control circuit mould
Block 200 transmits order and gives the first power control unit 530 to close the first power switching module MD1 with protection circuit safety.
Second digital analog converter 521 is electrically connected with the second buffer 420 of control circuit module 200 and second compared
Device 522, the second comparator 522 are electrically connected with third transistor M3 through pin position P6, and the second digital analog converter 521, which receives, to be come
From the second abnormal reference signal of the second buffer 420, and the second digital analog converter 521 is to abnormal with reference to letter by second
Number switch to analog format, the second comparator 522 is according to the second feedback signal PH2 and the second abnormal reference signal to determine whether
Overcurrent produces.Therefore, when the second comparator 522 judges to have overcurrent generation, the second judgement signal OC2 can be transmitted to control
Circuit module 200, control circuit module 200 transmit order and give the second power control unit 540 to close the second power switching module
MD2 is with protection circuit safety.
To be illustrated, in other embodiments, the first protection location 510 and one second protection location 520 herein
Set-up mode can be unlike the embodiments above, and the first feedback signal PH1 and the first abnormal reference signal, and the second feedback letter
Number PH2 can pass through electric current with the relation judgment mode of the second abnormal reference signal compared with, voltage ratio compared with or change voltage ratio
The mode such as more basic is reached, the first abnormal reference signal and the second abnormal reference signal can also be excess temperature reference signal or
Overvoltage reference signal, and different embodiments can set different electronic-circuit-components on demand, be not limited with above-mentioned.
Partial pressure is arranged to the 37% of initial voltage value in the present embodiment, in order to it is normal to obtain equivalent to one times RC times
Several discharge times, voltages of external capacitive C1 when electric discharge can be obtained by formula (6)：
Vc (t) represents magnitudes of voltage of the external capacitive C1 in discharge process, and E represents external capacitive C1 initial voltage value, t
For discharge time, therefore it can calculate when t is a RC time constants, Vc (t) is the 37% of initial voltage.Therefore, in the present embodiment
The first internal resistance R2 be 610 kilohms, and the second internal resistance R3 is 350 kilohms, but is not limited.In other realities
Apply in example, can also be arranged to obtain and be equal to discharge time of 2 times or other multiples RC time constants, and according to being expected
RC time constants change the partial pressure of partial pressure contact A1 in bleeder circuit 324.
Referring to Fig. 4, wherein Fig. 4 illustrates a kind of side of IC apparatus 110 according to another embodiment of the present invention
Block schematic diagram.The circuit composition of IC apparatus 110 is similar with IC apparatus 100, but in the present embodiment, numeral electricity
Road unit 400a also includes a man-machine interface 430a, and man-machine interface 430a is electrically connected with the first buffer 410a and the second buffer
420a is for the first abnormal reference signal of modification and the second abnormal reference signal.Other are filled with the integrated circuit described in Fig. 1 to Fig. 2
Put 100 phases and exist together and repeat no more.Through man-machine interface 430a configuration, user can be allowed to change first on demand abnormal with reference to letter
Number and the second abnormal reference signal numerical value, more increase the convenience used and selectivity.
Referring to Fig. 5, wherein Fig. 5 illustrates a kind of answering for IC apparatus 120 according to a further embodiment of the present invention
Use schematic diagram.IC apparatus 120 includes multiple pin position P1, P2, P3, P4, P5, P6 and detects pin position P7, and the first electric power
Modular converter MD1b is electrically connected with IC apparatus 120, and MD2b points of the second power switching module through pin position P1, P2, P3
Tou Guo not pin position P4, P5, P63 electric connection IC apparatus 120, wherein pin position P1, P2, P3, P4, P5, P6 and the first electricity
Power modular converter MD1b and the second power switching module MD2b electric connection and function are identical with the embodiment described in Fig. 2,
This is repeated no more.
And in the present embodiment, the first power switching module MD1b is provided for universal serial bus (USB) electricity
Power, the first power switching module MD1b of input voltage is 12 volts, makes output voltage In1 be 5 through IC apparatus 120
Volt, and the first power switching module MD1b normal action current is 5 amperes.Therefore, it can pass through non-essential resistance R1 setting the
One overcurrent is 8 amperes, therefore when the first power switching module MD1b the first feedback signal shows current value more than 8 ampere-hours,
First power switching module MD1b can be closed, to reach protective effect.
The second power switching module MD2b of the present embodiment is provided for central processing unit (CPU) electric power, input the
Two power switching module MD2b voltage is 12 volts, makes output voltage In2 be 1.05 volts through IC apparatus 120,
And second power switching module MD2b normal action current be 3 amperes.Therefore, it is excessively electric that external capacitive C1 settings second be can pass through
Flow for 6 amperes, therefore when the second power switching module MD2b the second feedback signal shows current value more than 6 ampere-hours, the second electricity
Power modular converter MD2b can be closed, to reach protective effect.
Fig. 6, Fig. 7 and Fig. 8 are referred to, also referring to Fig. 2 and Fig. 3, wherein Fig. 6 is illustrated according to another embodiment party of the present invention
A kind of step flow chart of circuit abnormality reference settings method 600 of formula, Fig. 7 illustrate the step flow chart of Fig. 6 step 620,
Fig. 8 illustrates the step flow chart of Fig. 6 step 640.Circuit abnormality reference settings method 600 includes step 610 to step 640.
In the charge step of step 610, non-essential resistance R1 and external capacitive C1 are charged, i.e. allow electric current I1
In continuing to flow into non-essential resistance R1 and external capacitive C1 in a period of time, and it is full to fill external capacitive C1.
In the first abnormal reference signal setting procedure of step 620, it detects external electrical through control circuit module 200
Hinder R1 across voltage to obtain the first abnormal reference signal, and as shown in fig. 7, step 620 can include step 621 and step 622.
First abnormal reference signal is converted into number format in step 621, it is abnormal with reference to letter that first can be stored in step 622
Number.In more detail, non-essential resistance R1 across voltage is originally used for analog format, can pass through foregoing description mode can will across voltage from
Analog format is converted to number format and is stored in profit in the first buffer 410.
It is to close electric current I1 in the discharge step of step 630 so that external capacitive C1 is put through non-essential resistance R1
Electricity.
It is to detect external electrical through control circuit module 200 in the second abnormal reference signal setting procedure of step 640
Hold C1 discharge time to obtain the second abnormal reference signal, and as shown in figure 8, step 640 can include step 641, step 642
And step 643.It is the discharge condition that external capacitive C1 is detected through detecting unit 300 in the time switch process of step 641,
And control circuit module 200 according to a frequency conversion discharge time to obtain temporary value, step 641 can include a partial pressure step and
One detecting step.
Specifically, partial pressure step is to start bleeder circuit 324 to make the partial pressure of bleeder circuit 324 be initial voltage value
37%.Due to external capacitive C1 initial voltage equivalent to non-essential resistance R1 across voltage, therefore be identified in step 620,
Therefore the configuration through the first internal resistance R2 and the second internal resistance R3 can make partial pressure for the 37% of initial voltage value.
Detecting step is discharged to the time of partial pressure for detecting external capacitive C1 from initial voltage value, to obtain discharge time.
Digital circuit unit 400 starts timing when discharging and starting, when external capacitive C1 voltage drops to identical with partial pressure, the
Three comparators 321 can transmit electric discharge and complete signal, and now digital circuit unit 400 can utilize above-mentioned formula (3) to obtain for follow-up
The temporary value calculated.
Step 642 is resistance removal process, is mainly eliminated the factor about non-essential resistance R1 in discharge time, numeral
Circuit unit 400 can be eliminated non-essential resistance R1 using above-mentioned formula (4), and then allow the second abnormal reference signal only by external capacitive
C1 influence, as shown in formula (5).The storing step of step 643 is that the abnormal reference signal of changed discharge time second is deposited
To the second buffer 420.
Although the present invention is disclosed above with embodiment, so it is not limited to the present invention, any to be familiar with this skill
Person, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations, therefore protection scope of the present invention is worked as
It is defined depending on the scope of which is defined in the appended claims.
Claims (16)
- A kind of 1. IC apparatus, to control one first power switching module and one second power switching module, its feature It is, the IC apparatus includes：One detecting pin position, a non-essential resistance in parallel and an external capacitive；One control circuit module, is electrically connected with the detecting pin position, the control circuit module to detect the one of the non-essential resistance across Voltage to produce one first abnormal reference signal, and the control circuit module to detect a discharge time of the external capacitive with Produce one second abnormal reference signal；AndOne drive control module, first power switching module is electrically connected with to receive one first feedback signal, the drive control Module is electrically connected with second power switching module to receive one second feedback signal, and the drive control module is electrically connected with and is somebody's turn to do Control circuit module is to receive the first abnormal reference signal and the second abnormal reference signal；The wherein drive control module is according to first feedback signal and the first abnormal reference signal to judge first electric power Whether modular converter occurs circuit abnormality, and the drive control module is believed according to second feedback signal and the second abnormal reference Number to judge whether second power switching module occurs circuit abnormality, the drive control module and in the first electrical power conversion mould Block or second power switching module occur to close first power switching module or the second electrical power conversion mould during circuit abnormality Block.
- 2. IC apparatus according to claim 1, it is characterised in that the drive control module includes：One first protection location, the control circuit module is electrically connected with comprising a first comparator to receive the first abnormal reference Signal, and the first comparator is electrically connected with first power switching module to receive first feedback signal, this first compares Device according to first feedback signal and the first abnormal reference signal judges whether that circuit abnormality occurs and transmits one first judgement Signal gives the control circuit module；AndOne second protection location, the control circuit module is electrically connected with comprising one second comparator to receive the second abnormal reference Signal, and second comparator is electrically connected with second power switching module to receive second feedback signal, this second compares Device according to second feedback signal and the second abnormal reference signal judges whether that circuit abnormality occurs and transmits one second judgement Signal gives the control circuit module.
- 3. IC apparatus according to claim 1, it is characterised in that it is single that the control circuit module includes a detecting Member, the detecting unit to by the non-essential resistance should switch to a number format from an analog format across voltage.
- 4. IC apparatus according to claim 3, it is characterised in that the control circuit module is also comprising a numeral electricity Road unit, the detecting unit is electrically connected with the digital circuit unit, and the electric discharge of detecting unit generation one completes signal and makes the number Word circuit unit obtains the discharge time for being equal to RC time constants；The wherein digital circuit unit by the discharge time being converted to the second abnormal reference signal.
- 5. IC apparatus according to claim 4, it is characterised in that the external capacitive in fill under full state have one Initial voltage value, the detecting unit include：One bleeder circuit, it is included：One first internal resistance, is electrically connected with the digital circuit unit；AndOne second internal resistance, comprising a partial pressure contact, the partial pressure contact is electrically connected with first internal resistance, and the partial pressure connects One partial pressure of point is the 37% of the initial voltage value；Wherein the detecting unit produces the electric discharge when external capacitive voltage is equal to the partial pressure and completes signal.
- 6. IC apparatus according to claim 1, it is characterised in that the first abnormal reference signal and this is second different Normal reference signal is all overcurrent reference signal.
- A kind of 7. IC apparatus, to control one first power switching module and one second power switching module, its feature It is, the IC apparatus includes：One detecting pin position, a non-essential resistance in parallel and an external capacitive；One control circuit module, the detecting pin position is electrically connected with, and the control circuit module includes：One detecting unit, the detecting pin position is electrically connected with, the detecting unit is somebody's turn to do to detect the one of the non-essential resistance across voltage Detecting unit completes signal to detect the discharge condition of the external capacitive to produce an electric discharge；AndOne digital circuit unit, the detecting unit is electrically connected with, the control circuit module completes signal according to the electric discharge and obtains one Discharge time is to produce one second abnormal reference signal, and according to being somebody's turn to do, across voltage generation one first is abnormal to be joined the control circuit module Signal is examined, the digital circuit unit includes：One first buffer, to store the first abnormal reference signal；One second buffer, to store the second abnormal reference signal；AndOne man-machine interface, first buffer and second buffer are electrically connected with, the man-machine interface is for changing first exception Reference signal or the second abnormal reference signal；AndOne drive control module, first power switching module is electrically connected with to receive one first feedback signal, the drive control Module is electrically connected with second power switching module to receive one second feedback signal, the drive control module be electrically connected with this One buffer is to receive the first abnormal reference signal, and the drive control module is electrically connected with second buffer to receive this Second abnormal reference signal；The wherein drive control module is according to first feedback signal and the first abnormal reference signal to judge first electric power Whether modular converter occurs circuit abnormality, and the drive control module is believed according to second feedback signal and the second abnormal reference Number to judge whether second power switching module occurs circuit abnormality, the drive control module and in the first electrical power conversion mould Block or second power switching module occur to close first power switching module or the second electrical power conversion mould during circuit abnormality Block.
- 8. IC apparatus according to claim 7, it is characterised in that it is first temporary that the detecting unit is electrically connected with this Device, and the detecting unit to by the non-essential resistance should be converted to a number format from an analog format to be stored in this across voltage First buffer.
- 9. IC apparatus according to claim 8, it is characterised in that the detecting unit produces the electric discharge and completes signal The digital circuit unit is set to obtain the discharge time for being equal to RC time constants, when the digital circuit unit is this to be discharged Between be converted to the second abnormal reference signal to be stored in second buffer.
- 10. IC apparatus according to claim 9, it is characterised in that the external capacitive has in filling under full state One initial voltage value, the detecting unit include：One bleeder circuit, it is included：One first internal resistance, is electrically connected with the digital circuit unit；AndOne second internal resistance, comprising a partial pressure contact, the partial pressure contact is electrically connected with first internal resistance, and the partial pressure connects One partial pressure of point is the 37% of the initial voltage value；Wherein the detecting unit produces the electric discharge when voltage of the external capacitive is equal to the partial pressure and completes signal.
- 11. IC apparatus according to claim 7, it is characterised in that the drive control module includes：One first protection location, comprising one first digital analog converter, first digital analog converter be electrically connected with this One buffer and the first abnormal reference signal is switched into analog format；AndOne second protection location, comprising one second digital analog converter, second digital analog converter be electrically connected with this Two buffers and the second abnormal reference signal is switched into analog format.
- 12. IC apparatus according to claim 7, it is characterised in that first buffer and second buffer It is that volatile memory, fast flash memory bank, the electronics formula of erasing can make carbon copies read-only memory, static RAM or any Memory function circuit.
- 13. a kind of circuit abnormality reference settings method, for an IC apparatus, wherein the IC apparatus is with a detecting Pin position one non-essential resistance of parallel connection and an external capacitive, and the IC apparatus is electrically connected with this comprising a control circuit module and detectd Survey pin position, it is characterised in that the circuit abnormality reference settings method includes：One charge step, the non-essential resistance and the external capacitive are charged；One first abnormal reference signal setting procedure, the control circuit module is set to detect the one of the non-essential resistance across voltage to obtain One first abnormal reference signal；One discharge step, the external capacitive is set to be discharged through the non-essential resistance；AndOne second abnormal reference signal setting procedure, the control circuit module is set to detect discharge time of the external capacitive to take Obtain one second abnormal reference signal.
- 14. circuit abnormality reference settings method according to claim 13, it is characterised in that the first abnormal reference signal Setting procedure includes：The first abnormal reference signal is converted into number format；AndStore the first abnormal reference signal.
- 15. circuit abnormality reference settings method according to claim 14, it is characterised in that the second abnormal reference signal Setting procedure includes：One time switch process, the discharge condition of the external capacitive, and the control circuit module root are detected through a detecting unit According to a frequency conversion discharge time value is kept in obtain one；One resistance removal process, the control circuit module eliminated using the first abnormal reference signal this in the temporary value outside Resistance factors are to obtain the second abnormal reference signal；AndOne storing step, store the second abnormal reference signal.
- 16. circuit abnormality reference settings method according to claim 15, it is characterised in that the external capacitive is in filling full shape There is an initial voltage value, the time switch process includes under state：One partial pressure step, a partial pressure of the bleeder circuit is set to be the initial voltage through the bleeder circuit for starting the detecting unit The 37% of value；AndOne detecting step, detect the external capacitive from the initial voltage value be discharged to the time of the partial pressure to obtain the electric discharge when Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539748.8A CN107611932B (en) | 2016-07-11 | 2016-07-11 | IC apparatus and its setting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539748.8A CN107611932B (en) | 2016-07-11 | 2016-07-11 | IC apparatus and its setting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107611932A true CN107611932A (en) | 2018-01-19 |
| CN107611932B CN107611932B (en) | 2019-03-22 |
Family
ID=61055093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610539748.8A Active CN107611932B (en) | 2016-07-11 | 2016-07-11 | IC apparatus and its setting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107611932B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110535401A (en) * | 2018-05-25 | 2019-12-03 | 茂达电子股份有限公司 | Motor drive circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107684A (en) * | 2011-11-15 | 2013-05-15 | 艾沃特有限公司 | Power Converter Controller IC Having Pins with Multiple Functions |
| CN103378725A (en) * | 2012-04-16 | 2013-10-30 | 登丰微电子股份有限公司 | A controller with a multifunctional pin and a conversion controller |
| CN103701327A (en) * | 2012-09-27 | 2014-04-02 | 半导体元件工业有限责任公司 | Off-line power converter and integrated circuit suitable for use in same |
| US20150326103A1 (en) * | 2014-05-08 | 2015-11-12 | Fairchild Korea Semiconductor Ltd. | Switch control circuit and power supply device including the same |
-
2016
- 2016-07-11 CN CN201610539748.8A patent/CN107611932B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107684A (en) * | 2011-11-15 | 2013-05-15 | 艾沃特有限公司 | Power Converter Controller IC Having Pins with Multiple Functions |
| CN103378725A (en) * | 2012-04-16 | 2013-10-30 | 登丰微电子股份有限公司 | A controller with a multifunctional pin and a conversion controller |
| CN103701327A (en) * | 2012-09-27 | 2014-04-02 | 半导体元件工业有限责任公司 | Off-line power converter and integrated circuit suitable for use in same |
| US20150326103A1 (en) * | 2014-05-08 | 2015-11-12 | Fairchild Korea Semiconductor Ltd. | Switch control circuit and power supply device including the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110535401A (en) * | 2018-05-25 | 2019-12-03 | 茂达电子股份有限公司 | Motor drive circuit |
| CN110535401B (en) * | 2018-05-25 | 2021-06-01 | 茂达电子股份有限公司 | Motor driving circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107611932B (en) | 2019-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5350479B2 (en) | Apparatus and method for measuring cell voltage of battery pack | |
| CN110573893B (en) | Apparatus and method for estimating state of charge of secondary battery | |
| CN107933313B (en) | Method and system for diagnosing contactor health in high voltage electrical systems | |
| US20110121837A1 (en) | Battery pack and method of sensing voltage of battery pack | |
| EP3664252A1 (en) | Pre-charge resistor protective apparatus | |
| JP2008206259A (en) | Charging system, charger, and battery pack | |
| ATE371249T1 (en) | INTEGRATED CHARGE READING CIRCUIT FOR RESISTIVE MEMORY | |
| US20110031976A1 (en) | Voltage measuring apparatus for assembled battery | |
| JP2012510070A (en) | Battery cell voltage measuring apparatus and measuring method | |
| TWI482051B (en) | Method for configuring analog-to-digital converter keys and non-transitory machine readable medium storing program code executed for performing such method | |
| CN110741268A (en) | Method for determining power limit of battery and battery management system | |
| JP7226723B2 (en) | Battery management system, battery pack, electric vehicle and battery management method | |
| CN107611932A (en) | IC apparatus and its establishing method | |
| CN101312300A (en) | Battery management system using control signal generation circuit | |
| JP6939744B2 (en) | Battery monitoring device | |
| JP4158352B2 (en) | Battery voltage detector | |
| JP5312491B2 (en) | Voltage display method, voltage display device, and battery pack | |
| JP5378893B2 (en) | Electric vehicle charging system | |
| JP2022522342A (en) | Battery diagnostic device, battery diagnostic method and energy storage system | |
| CN110770593B (en) | Method for smoothing power limit of battery and battery management system | |
| JP6470318B2 (en) | Storage battery device and internal resistance value deriving method | |
| US20090195422A1 (en) | Area and power efficient analog to digital converter and methods for using such | |
| JP6628517B2 (en) | Semiconductor device and cell voltage equalization method for battery cell | |
| JP5245739B2 (en) | Battery abnormality judgment device | |
| CN100527629C (en) | Analog to digital converter threshold detection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |