CN106533177B - For promoting the controller and its correlation technique of power adapter efficiency - Google Patents
For promoting the controller and its correlation technique of power adapter efficiency Download PDFInfo
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- CN106533177B CN106533177B CN201510573580.8A CN201510573580A CN106533177B CN 106533177 B CN106533177 B CN 106533177B CN 201510573580 A CN201510573580 A CN 201510573580A CN 106533177 B CN106533177 B CN 106533177B
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Abstract
The invention discloses a kind of for promoting the controller and its correlation technique of power adapter efficiency.The controller includes that a comparison module and a grid signal generate unit.The comparison module is to generate a detection voltage, and the detection voltage and a predetermined value are to generate a comparison result for the DC input voitage according to the primary side of the power adapter.It is for changing the sink current for flowing through the grid pin of the controller, wherein the grid pin is coupled to the power switch of the primary side of the power adapter according to the comparison result that the grid signal, which generates unit,.Therefore, compared to the prior art, the present invention not will increase dramatically the cost of the power adapter and the efficiency of the power adapter can be elevated.
Description
Technical field
The present invention relates to a kind of for promoting the controller and its correlation technique of power adapter efficiency, more particularly to one kind
It is converted using the sink current for flowing through the grid pin for the power switch that controller is coupled to power adapter is changed with increasing power supply
The controller and its correlation technique of the efficiency of device.
Background technique
U.S. Department of Energy (US Department of Energy) has required the energy palpus of next-generation external power adapter
Meet VI grades of efficiency specifications.In order to make the efficiency of next-generation external power adapter meet VI grades of energy specifications, design is applied to
The designer of the power adapter of next-generation external power adapter must may substantially change power supply disclosed in the prior art
Converter causes the cost for the power adapter for being applied to next-generation external power adapter to be substantially improved.In addition, if increasing
Flowing through the sink current of the grid pin of controller, (wherein the grid pin of controller is coupled to the primary side of power adapter
Power switch), then the efficiency of power adapter can be promoted in the case where the cost of power adapter is not significantly increased, but will increase electricity
The electromagnetic interference of source converter.Therefore, the efficiency that power adapter is promoted under the cost of power adapter how not to be significantly increased
One important topic of designer as power adapter.
Summary of the invention
One embodiment of the invention discloses a kind of for promoting the controller of power adapter efficiency.The controller includes
One comparison module and a grid signal generate unit.The comparison module is for the primary side according to the power adapter
DC input voitage generates a detection voltage, and the detection voltage and a predetermined value are to generate a comparison result.Institute
Stating grid signal and generating unit is for according to the comparison result, changing the filling electricity for flowing through the grid pin of the controller
Stream, wherein the grid pin is coupled to the power switch of the primary side of the power adapter.
Another embodiment of the present invention discloses a kind of for promoting the controller of power adapter efficiency.The controller packet
Signal generation unit is enabled containing one and a grid signal generates unit.The enabling signal generation unit is for according to corresponding institute
The feedback voltage for stating the DC input voitage of the primary side of power adapter and the secondary side of the corresponding power adapter, generates
The one of the duty ratio of a corresponding grid control signal enables signal, wherein the feedback voltage relates to the power adapter
Secondary side output voltage.It is for according to the enabling signal, change to flow through the control that the grid signal, which generates unit,
The sink current of the grid pin of device processed, wherein the power for the primary side that the grid pin is coupled to the power adapter is opened
It closes, and the grid signal generates unit and is separately used to generate the grid control signal to the power switch.
Another embodiment of the present invention discloses a kind of method for promoting power adapter efficiency, wherein being applied to described
One controller of method includes that a high pressure pin, a comparison module and a grid signal generate unit, and the comparison module packet
Containing a detection voltage generating unit and a comparator.The method includes the high pressure pin from the primary of the power adapter
It flanks and receives a DC input voitage；The detection voltage generating unit generates a detection voltage according to the DC input voitage；
The comparator detection voltage and a predetermined value are to generate a comparison result；The grid signal generate unit according to
The comparison result changes the sink current for flowing through the grid pin of the controller.
Another embodiment of the present invention discloses a kind of method for promoting power adapter efficiency, wherein being applied to described
One controller of method includes that an auxiliary pin, a comparison module and a grid signal generate unit, and the comparison module packet
Containing a detection voltage generating unit and a comparator.The method includes the auxiliary pin from being coupled to the power adapter
An auxiliary winding bleeder circuit receive a boost voltage, wherein the boost voltage corresponds to the DC input voitage；Institute
Detection voltage generating unit is stated according to the boost voltage, generates a detection voltage；The comparator detection voltage
With a predetermined value to generate a comparison result；The grid signal generates unit according to the comparison result, and change flows through described
The sink current of the grid pin of controller, wherein the power for the primary side that the grid pin is coupled to the power adapter is opened
It closes.
Another embodiment of the present invention discloses a kind of method for promoting power adapter efficiency, wherein being applied to described
One controller of method includes that a high pressure pin, an enabling signal generation unit and a grid signal generate unit.The method
The DC input voitage is received from the primary side of the power adapter comprising the high pressure pin；The enabling signal generates
Unit generates a corresponding grid according to the feedback voltage of the DC input voitage and the secondary side of the corresponding power adapter
Control the duty ratio of signal one enables signal, wherein the feedback voltage relates to the secondary side of the power adapter
Output voltage；The grid signal generates unit according to the enabling signal, changes the grid pin for flowing through the controller
Sink current.
The present invention discloses a kind of for promoting the controller and its correlation technique of power adapter efficiency.The controller and
The method is the DC input voitage using a comparison module according to the primary side of the power adapter, generates a detection electricity
Pressure, and the detection voltage and a predetermined value generate unit to generate a comparison result, and using a grid signal
According to the comparison result, increase the sink current for flowing through the grid pin of the controller.In addition, the controller and the side
An enabling signal generation unit can also be used according to the DC input voitage of the primary side of the correspondence power adapter and right in method
The feedback voltage of the secondary side of the power adapter is answered, generate the duty ratio of a corresponding grid control signal one enables letter
Number, and unit is generated according to the enabling signal using the grid signal, increase the grid pin for flowing through the controller
Sink current.Therefore, when the sink current for the grid pin for flowing through the controller increases and the grid control signal is by high electricity
When flat change to low level, because the sink current for flowing through the grid pin of the controller increases, the grid control letter
Number can rapidly it be changed by high level to low level, that is to say, that the power switch of the primary side of the power adapter can be fast
Switch fastly, causes the efficiency of the power adapter preferable.Although the power switch of the primary side when the power adapter
When being switched rapidly between, the electromagnetic interference of the power adapter be will increase, but since the DC input voitage is low pressure, institute
It can be easier to eliminate with the electromagnetic interference of the power adapter.Therefore, compared to the prior art, the present invention will not substantially increase
Add the cost of the power adapter and the efficiency of the power adapter can be elevated.
Detailed description of the invention
It is a kind of for promoting the signal of the controller of power adapter efficiency that Fig. 1 is that the first embodiment of the present invention discloses
Figure.
Fig. 2 be illustrate when flow through the sink current of grid pin of controller increase when, grid control signal can rapidly by
High level changes to low level schematic diagram.
It is a kind of for promoting the signal of the controller of power adapter efficiency that Fig. 3 is that the second embodiment of the present invention discloses
Figure.
It is a kind of for promoting the signal of the controller of power adapter efficiency that Fig. 4 is that the third embodiment of the present invention discloses
Figure.
It is a kind of for promoting the flow chart of the method for power adapter efficiency that Fig. 5 is that the fourth embodiment of the present invention discloses.
It is a kind of for promoting the flow chart of the method for power adapter efficiency that Fig. 6 is that the fifth embodiment of the present invention discloses.
It is a kind of for promoting the flow chart of the method for power adapter efficiency that Fig. 7 is that the sixth embodiment of the present invention discloses.
Wherein, the reference numerals are as follows:
100 power adapters
102 power switch
104 bleeder circuits
200,300,400 controller
202,402 high pressure pin
204,304 comparison module
206 grid signals generate unit
208 grid pins
210 compensation pins
302 auxiliary pins
404 enable signal generation unit
2042,3042 detection voltage generating unit
2044,3044 comparator
2062 switches
ACIV AC-input voltage
AUX auxiliary winding
CR comparison result
DCIV DC input voitage
ES enables signal
GCS grid control signal
IS sink current
PRI primary side
PV predetermined value
PWM pulse width modulation signal
RO output voltage
SEC secondary side
VD detects voltage
VOUT output voltage
VFB feedback voltage
VAUX boost voltage
500-512,600-612,700-712 step
Specific embodiment
Please refer to Fig. 1, it is a kind of for promoting 100 efficiency of power adapter that Fig. 1 is that the first embodiment of the present invention discloses
The schematic diagram of controller 200.As shown in Figure 1, controller 200 includes a high pressure pin 202, a comparison module 204 and a grid
Signal generation unit 206, wherein comparison module 204 includes a detection voltage generating unit 2042 and a comparator 2044.Such as Fig. 1
Shown, high pressure pin 202 can receive a DC input voitage DCIV from the primary side PRI of power adapter 100, and wherein direct current is defeated
Enter voltage DCIV and corresponds to the AC-input voltage ACIV for being input to power adapter 100.Detection electricity in comparison module 204
Pressure generates unit 2042 and is coupled to high pressure pin 202, and the direct current for the primary side PRI according to power adapter 100 inputs
Voltage DCIV generates a detection voltage VD, wherein detection voltage VD is the partial pressure of DC input voitage DCIV.In addition, comparing mould
Comparator 2044 in block 204 be for compare detection a voltage VD and predetermined value PV to generate a comparison result CR, that is,
Say that, when detecting voltage VD (partial pressure of DC input voitage DCIV) lower than predetermined value PV, comparator 2044 generates comparison result
CR.As shown in Figure 1, the switch 2062 that grid signal generates in unit 206 can root after comparator 2044 generates comparison result CR
(ON) is opened according to comparison result CR, the output voltage RO for causing grid signal to generate unit 206 is reduced.Because grid signal generates
The output voltage RO of unit 206 is reduced, so the sink current IS for flowing through the grid pin 208 of controller 200 increases, wherein as schemed
Shown in 1, grid pin 208 is coupled to the power switch 102 of the primary side PRI of power adapter 100.In addition, grid signal
Unit 206 is generated separately for generating a grid control signal GCS to power switch according to a pulse width modulation signal PWM
102, wherein pulse width modulation signal PWM is the 210 received feedback voltage VFB institute of compensation pin according to controller 200
It generates, feedback voltage VFB relates to the output voltage VO UT of the secondary side SEC of power adapter 100, and power switch 102
It is to be opened and closed according to grid control signal GCS.In this way, the sink current IS when the grid pin 208 for flowing through controller 200 increases
Add and when grid control signal GCS is changed by high level to low level, because flowing through the filling of the grid pin 208 of controller 200
Electric current IS increases, so grid control signal GCS can rapidly be changed by high level to low level (as shown in Figure 2), that is,
It says that power switch 102 can be switched rapidly between, causes the efficiency of power adapter 100 preferable.Although when power switch 102 can quilt
When rapidly switching, the electromagnetic interference of power adapter 100 be will increase, but due to DC input voitage DCIV be low pressure (because
Detect voltage VD and be lower than predetermined value PV), so the electromagnetic interference of power adapter 100 can be easier to eliminate.Therefore, compared to
The prior art, because controller 200 is to change sink current IS according to comparison result CR using switch 2062, so power supply is converted
The cost of device 100 is not significantly increased and the efficiency of power adapter 100 can be elevated.In addition, when (direct current is defeated by detection voltage VD
Enter the partial pressure of voltage DCIV) be higher than predetermined value PV when, comparator 2044 will not generate comparison result CR, and grid signal is caused to generate
Switch 2062 in unit 206 closes (OFF).Because comparator 2044 does not generate comparison result CR, grid signal is produced
The output voltage RO of raw unit 206 increases.Because the output voltage RO that grid signal generates unit 206 increases, control is flowed through
The sink current IS of the grid pin 208 of device 200 processed is reduced.
In addition, in another embodiment of the invention, comparator 2044 is as detection voltage VD (DC input voitage DCIV
Partial pressure) be higher than predetermined value PV when, generate comparison result CR, cause grid signal generate unit 206 in switch 2062 close
(at this point, switch 2062 is a P type metal oxide semiconductor transistor or a transmission grid).Because switch 2062 is closed,
The output voltage RO that grid signal generates unit 206 increases.Because the output voltage RO that grid signal generates unit 206 increases,
So the sink current IS for flowing through the grid pin 208 of controller 200 is reduced.
Referring to figure 3., it is a kind of for promoting 100 efficiency of power adapter to be that the second embodiment of the present invention discloses by Fig. 3
The schematic diagram of controller 300.As shown in figure 3, controller 300 includes an auxiliary pin 302, a comparison module 304 and a grid
Signal generation unit 206, wherein comparison module 304 includes a detection voltage generating unit 3042 and a comparator 3044.Such as Fig. 3
Shown, auxiliary pin 302 can receive an auxiliary from the bleeder circuit 104 for the auxiliary winding AUX for being coupled to power adapter 100
Voltage VAUX, wherein the DC input voitage DCIV of the primary side PRI of boost voltage VAUX corresponding power converter 100, and it is straight
Stream input voltage DCIV corresponds to the AC-input voltage ACIV for being input to power adapter 100.Inspection in comparison module 304
It surveys voltage generating unit 3042 and is coupled to auxiliary pin 302, for generating a detection voltage VD according to boost voltage VAUX.
In addition, the comparator 3044 in comparison module 304 is tied compared with a predetermined value PV is to generate one for comparing detection voltage VD
Fruit CR, that is to say, that when detecting voltage VD lower than predetermined value PV, comparator 3044 generates comparison result CR.In addition, such as Fig. 3 institute
Show, after comparator 3044 generates comparison result CR, remaining operating principle of controller 300 is all identical with controller 200, herein
It repeats no more.
Referring to figure 4., it is a kind of for promoting 100 efficiency of power adapter to be that the third embodiment of the present invention discloses by Fig. 4
The schematic diagram of controller 400.As shown in figure 4, controller 400 includes that a high pressure pin 402, one enables signal generation unit 404
Unit 206 is generated with a grid signal.As shown in figure 4, high pressure pin 402 can be received from the primary side PRI of power adapter 100
One DC input voitage DCIV, wherein DC input voitage DCIV corresponds to the exchange input for being input to power adapter 100
Voltage ACIV.It enables signal generation unit 404 and is coupled to high pressure pin 402, for the primary side according to power adapter 100
The feedback voltage VFB of the secondary side SEC of the DC input voitage DCIV and corresponding power converter 100 of PRI generates a corresponding grid
Pole controls an enabling signal ES of the duty ratio D of signal GCS, wherein the duty of grid control signal GCS can be determined according to formula (1)
Than the relationship of D, DC input voitage DCIV and feedback voltage VFB.
Wherein k is a constant, and VOUT is the output voltage of the secondary side SEC of power adapter 100 and N is that power supply turns
The turn ratio of the coil of the secondary side SEC of the coil and power adapter 100 of the primary side PRI of parallel operation 100.In addition, such as Fig. 4 institute
Show, feedback voltage VFB is to be received by the compensation pin 210 of controller 400, and feedback voltage VFB relates to power supply conversion
The output voltage VO UT of the secondary side SEC of device 100.Therefore, enabling signal generation unit 404 is as grid control signal GCS
When duty ratio D is greater than a predetermined value, generation enabling signal ES to grid signal generates unit 206, wherein as shown in formula (1), when
When the duty ratio D of grid control signal GCS is greater than a predetermined value, DC input voitage DCIV is less than a scheduled voltage.Separately
Outside, as shown in figure 4, after enabling signal generation unit 404 and generating enabling signal ES to grid signal generation unit 206, control
Remaining operating principle of device 400 is all identical with controller 200, and details are not described herein.
In addition, in another embodiment of the invention, enabling signal generation unit 404 is as grid control signal GCS
It when duty ratio D is less than predetermined value, generates and enables signal ES, cause grid signal to generate the switch 2062 in unit 206 and close.Cause
It is closed for switch 2062, so the output voltage RO that grid signal generates unit 206 increases.Because grid signal generates unit
206 output voltage RO increases, so the sink current IS for flowing through the grid pin 208 of controller 400 is reduced.
Please refer to Fig. 1,2, that 5, Fig. 5 is that the fourth embodiment of the present invention discloses is a kind of for promoting power adapter efficiency
The flow chart of method.The method of Fig. 5 is to illustrate that detailed step is as follows using the power adapter 100 and controller 200 of Fig. 1:
Step 500: starting；
Step 502: high pressure pin 202 receives a DC input voitage DCIV from the primary side PRI of power adapter 100；
Step 504: detection voltage generating unit 2042 generates a detection voltage VD according to DC input voitage DCIV；
Step 506: whether detecting voltage VD less than predetermined value PV；If so, carrying out step 508；If not, carrying out step
512；
Step 508: comparator 2044 generates a comparison result CR；
Step 510: grid signal generates unit 206 and increases the sink current IS for flowing through the grid pin 208 of controller 200,
Jump back to step 502；
Step 512: grid signal generates unit 206 and reduces the sink current IS for flowing through the grid pin 208 of controller 200,
Jump back to step 502.
In step 502, as shown in Figure 1, high pressure pin 202 can receive always from the primary side PRI of power adapter 100
Input voltage DCIV is flowed, wherein DC input voitage DCIV corresponds to the AC-input voltage for being input to power adapter 100
ACIV.In step 504, the detection voltage generating unit 2042 in comparison module 204 can be according to the primary of power adapter 100
The DC input voitage DCIV of side PRI generates detection voltage VD, wherein detection voltage VD is point of DC input voitage DCIV
Pressure.In addition, in step 508, the comparator 2044 in comparison module 204 is as detection voltage VD (DC input voitage DCIV
Partial pressure) be lower than predetermined value PV when, generate comparison result CR.In step 510, as shown in Figure 1, generating ratio in comparator 2044
After result CR, the switch 2062 that grid signal generates in unit 206 can be opened according to comparison result CR, and grid signal is caused to produce
The output voltage RO of raw unit 206 is reduced.Because the output voltage RO that grid signal generates unit 206 is reduced, control is flowed through
The sink current IS of the grid pin 208 of device 200 processed increases.In this way, when the sink current for the grid pin 208 for flowing through controller 200
When IS increases and grid control signal GCS is changed by high level to low level, because flowing through the grid pin 208 of controller 200
Sink current IS increase, so grid control signal GCS can rapidly be changed by high level to low level (as shown in Figure 2),
That is power switch 102 can be switched rapidly between, cause the efficiency of power adapter 100 preferable.Although working as power switch 102
When can be switched rapidly between, the electromagnetic interference of power adapter 100 be will increase, but since DC input voitage DCIV is low pressure
(because detection voltage VD is lower than predetermined value PV), the electromagnetic interference of power adapter 100 can be easier to eliminate.Therefore,
Compared to the prior art, because controller 200 is to change sink current IS, so electric according to comparison result CR using switch 2062
The cost of source converter 100 is not significantly increased and the efficiency of power adapter 100 can be elevated.In addition, in step 512,
When detecting voltage VD (partial pressure of DC input voitage DCIV) higher than predetermined value PV, comparator 2044 will not generate comparison result
CR causes grid signal to generate the switch 2062 in unit 206 and closes.Because comparator 2044 does not generate comparison result CR,
So the output voltage RO that grid signal generates unit 206 increases.Because the output voltage RO that grid signal generates unit 206 increases
Add, so the sink current IS for flowing through the grid pin 208 of controller 200 is reduced.
In addition, in another embodiment of the invention, comparator 2044 is as detection voltage VD (DC input voitage DCIV
Partial pressure) be higher than predetermined value PV when, generate comparison result CR, cause grid signal generate unit 206 in switch 2062 close
(at this point, switch 2062 is a P type metal oxide semiconductor transistor or a transmission grid).Because switch 2062 is closed,
The output voltage RO that grid signal generates unit 206 increases.Because the output voltage RO that grid signal generates unit 206 increases,
So the sink current IS for flowing through the grid pin 208 of controller 200 is reduced.
Referring to figure 3., it is a kind of for promoting the side of power adapter efficiency to be that the fifth embodiment of the present invention discloses by 6, Fig. 6
The flow chart of method.The method of Fig. 6 is to illustrate that detailed step is as follows using the power adapter 100 and controller 300 of Fig. 3:
Step 600: starting；
Step 602: auxiliary pin 302 connects from the bleeder circuit 104 for the auxiliary winding AUX for being coupled to power adapter 100
Receive a boost voltage VAUX；
Step 604: detection voltage generating unit 2042 generates a detection voltage VD according to boost voltage VAUX；
Step 606: whether detecting voltage VD less than predetermined value PV；If so, carrying out step 608；If not, carrying out step
612；
Step 608: comparator 3044 generates a comparison result CR；
Step 610: grid signal generates unit 206 and increases the sink current IS for flowing through the grid pin 208 of controller 300,
Jump back to step 602；
Step 612: grid signal generates unit 206 and reduces the sink current IS for flowing through the grid pin 208 of controller 300,
Jump back to step 602.
As shown in figure 3, the embodiment of the embodiment and Fig. 5 of Fig. 6 the difference is that in step 602, auxiliary pin 302 can
Boost voltage VAUX is received from the bleeder circuit 104 for the auxiliary winding AUX for being coupled to power adapter 100, wherein boost voltage
The DC input voitage DCIV of the primary side PRI of VAUX corresponding power converter 100, and DC input voitage DCIV is corresponding to defeated
Enter to an AC-input voltage ACIV of power adapter 100；In step 604, detection voltage generating unit 3042 can basis
Boost voltage VAUX generates detection voltage VD.In addition, as shown in fig. 6, after executing step 604, the embodiment of Fig. 6 remaining
Operating principle is all identical with the embodiment of Fig. 5, and details are not described herein.
Referring to figure 4., it is a kind of for promoting the side of power adapter efficiency to be that the sixth embodiment of the present invention discloses by 7, Fig. 7
The flow chart of method.The method of Fig. 7 is to illustrate that detailed step is as follows using the power adapter 100 and controller 400 of Fig. 4:
Step 700: starting；
Step 702: high pressure pin 202 receives a DC input voitage DCIV from the primary side PRI of power adapter 100；
Step 704: enabling signal generation unit 404 according to DC input voitage DCIV and corresponding power converter 100
The feedback voltage VFB of secondary side SEC determines the duty ratio D of a corresponding grid control signal GCS；
Step 706: whether the duty ratio D of grid control signal GCS is greater than a predetermined value；If so, carrying out step 708；
If not, carrying out step 712；
Step 708: enabling signal generation unit 404 and generate an enabling signal ES；
Step 710: grid signal generates unit 206 and increases the sink current IS for flowing through the grid pin 208 of controller 400,
Jump back to step 702；
Step 712: grid signal generates unit 206 and reduces the sink current IS for flowing through the grid pin 208 of controller 400,
Jump back to step 702.
In step 704, enabling signal generation unit 404 can be defeated according to the direct current of the primary side PRI of power adapter 100
Enter voltage DCIV, corresponding power converter 100 secondary side SEC feedback voltage VFB and formula (1), determine corresponding grid control
The duty ratio of signal GCS.In step 708, as shown in formula (1), when the duty ratio D of grid control signal GCS is greater than predetermined value
When, generation enabling signal ES to grid signal generates unit 206, wherein as shown in formula (1), when accounting for for grid control signal GCS
When sky ratio D is greater than a predetermined value, DC input voitage DCIV is less than a scheduled voltage, so enabling signal generation unit
404 generate enabling signal ES to grid signal generation unit 206.In addition, as shown in fig. 7, after executing step 708, the reality of Fig. 7
Remaining operating principle for applying example is all identical with the embodiment of Fig. 5, and details are not described herein.
In conclusion the controller and its correlation technique disclosed in this invention for promoting power adapter efficiency is benefit
One detection voltage is generated according to the DC input voitage of the primary side of power adapter with comparison module, and compares detection electricity
Pressure generates a comparison result with a predetermined value, and generates unit according to comparison result using grid signal, and increase flows through control
The sink current of the grid pin of device processed.In addition, it is disclosed in this invention for promoted power adapter efficiency controller and its
Correlation technique, which can also be used, enables signal generation unit according to the DC input voitage of the primary side of corresponding power converter and right
The feedback voltage of the secondary side of power adapter is answered, generate the duty ratio of a corresponding grid control signal one enables signal, with
And unit is generated according to signal is enabled using grid signal, increase the sink current for flowing through the grid pin of controller.Therefore, work as stream
When the sink current of the grid pin of via controller increases and grid control signal is changed by high level to low level, because flowing through control
The sink current of the grid pin of device processed increases, so grid control signal can rapidly be changed by high level to low level, also
It is to say that the power switch of the primary side of power adapter can be switched rapidly between, causes the efficiency of power adapter preferable.Although
When the power switch of the primary side of power adapter is switched rapidly between, the electromagnetic interference of power adapter be will increase, but by
In DC input voitage be low pressure, so the electromagnetic interference of power adapter can be easier to eliminate.Therefore, compared to existing skill
Art, the present invention not will increase dramatically the cost of power adapter and the efficiency of power adapter can be elevated.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (11)
1. it is a kind of for promoting the controller of power adapter efficiency, characterized by comprising:
One enables signal generation unit, for the DC input voitage and correspondence according to the primary side of the correspondence power adapter
The feedback voltage of the secondary side of the power adapter, generate the duty ratio of a corresponding grid control signal one enable signal,
Wherein the feedback voltage relates to the output voltage of the secondary side of the power adapter；And
One grid signal generates unit, for changing the filling for flowing through the grid pin of the controller according to the enabling signal
Electric current, wherein the grid pin is coupled to the power switch of the primary side of the power adapter, and the grid signal produces
Raw unit is separately used to generate the grid control signal to the power switch.
2. controller as described in claim 1, which is characterized in that the enabling signal generation unit generates the corresponding grid
Control signal duty ratio enabling signal, be when the duty ratio of the grid control signal be greater than a predetermined value when, it is described to open
The enabling signal is generated with signal generation unit.
3. controller as claimed in claim 2, which is characterized in that the grid signal generates unit and believed according to the enabling
Number, change the sink current for flowing through the grid pin of the controller, is the duty ratio when the grid control signal greater than described
When predetermined value, the grid signal generates unit according to the enabling signal, increases the sink current.
4. controller as described in claim 1, which is characterized in that the enabling signal generation unit generates the corresponding grid
Control signal duty ratio enabling signal, be when the duty ratio of the grid control signal is less than a predetermined value, it is described to open
The enabling signal is generated with signal generation unit.
5. controller as claimed in claim 4, which is characterized in that the grid signal generates unit and believed according to the enabling
Number, change the sink current for flowing through the grid pin of the controller, is the duty ratio when the grid control signal less than described
When predetermined value, the grid signal generates unit according to the enabling signal, reduces the sink current.
6. controller as described in claim 1, which is characterized in that additionally comprise:
One high pressure pin, for receiving the DC input voitage from the primary side of the power adapter.
7. a kind of method for promoting power adapter efficiency, wherein the controller for being applied to the method includes a high pressure
Pin, one enable signal generation unit and grid signal generation unit, and the method includes:
The high pressure pin receives DC input voitage from the primary side of the power adapter；
It is characterized in that also including:
It is described to enable signal generation unit returning according to the secondary side of the DC input voitage and the corresponding power adapter
Voltage is awarded, generate the duty ratio of a corresponding grid control signal one enables signal, wherein the feedback voltage relates to institute
State the output voltage of the secondary side of power adapter；And
The grid signal generates unit according to the enabling signal, changes the filling electricity for flowing through the grid pin of the controller
Stream.
8. the method for claim 7, which is characterized in that the enabling signal generation unit generates the corresponding grid control
The enabling signal of the duty ratio of signal processed is the enabling when the duty ratio of the grid control signal is greater than a predetermined value
Signal generation unit generates the enabling signal.
9. method according to claim 8, which is characterized in that the grid signal generates unit according to the enabling signal,
The sink current for changing the grid pin for flowing through the controller includes:
When the duty ratio of the grid control signal is greater than the predetermined value, the grid signal generates unit and opens according to
With signal, increase the sink current.
10. the method for claim 7, which is characterized in that the enabling signal generation unit generates the corresponding grid
Control signal duty ratio enabling signal, be when the duty ratio of the grid control signal is less than a predetermined value, it is described to open
The enabling signal is generated with signal generation unit.
11. method as claimed in claim 10, which is characterized in that the grid signal generates unit and believed according to the enabling
Number, the sink current for changing the grid pin for flowing through the controller includes:
When the duty ratio of the grid control signal is less than the predetermined value, the grid signal generates unit and opens according to
With signal, the sink current is reduced.
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| CN201510573580.8A CN106533177B (en) | 2015-09-10 | 2015-09-10 | For promoting the controller and its correlation technique of power adapter efficiency |
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| CN201510573580.8A CN106533177B (en) | 2015-09-10 | 2015-09-10 | For promoting the controller and its correlation technique of power adapter efficiency |
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| CN108631558A (en) * | 2017-03-23 | 2018-10-09 | 通嘉科技股份有限公司 | Controller and its operating method applied to power supply changeover device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7342328B1 (en) * | 2004-01-20 | 2008-03-11 | Linear Technology Corporation | Methods and circuits for tracking and sequencing multiple power supplies |
| CN102208864A (en) * | 2010-03-30 | 2011-10-05 | 松下电器产业株式会社 | Switching device driving unit and semiconductor apparatus |
| CN103166584A (en) * | 2013-02-06 | 2013-06-19 | 苏州硅智源微电子有限公司 | Complementary metal-oxide-semiconductor transistor (CMOS) amplifier strengthening sinking current and driving capacitive load |
| CN103715890A (en) * | 2012-10-05 | 2014-04-09 | 通嘉科技股份有限公司 | Controller for controlling a power converter to output constant power, and related method thereof |
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| KR20150029866A (en) * | 2013-09-11 | 2015-03-19 | 현대자동차주식회사 | The Circuit and method for conducting soft turn-off |
| US9590511B2 (en) * | 2013-10-08 | 2017-03-07 | Rohm Co., Ltd. | Insulation type switching power source apparatus |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7342328B1 (en) * | 2004-01-20 | 2008-03-11 | Linear Technology Corporation | Methods and circuits for tracking and sequencing multiple power supplies |
| CN102208864A (en) * | 2010-03-30 | 2011-10-05 | 松下电器产业株式会社 | Switching device driving unit and semiconductor apparatus |
| CN103715890A (en) * | 2012-10-05 | 2014-04-09 | 通嘉科技股份有限公司 | Controller for controlling a power converter to output constant power, and related method thereof |
| CN103166584A (en) * | 2013-02-06 | 2013-06-19 | 苏州硅智源微电子有限公司 | Complementary metal-oxide-semiconductor transistor (CMOS) amplifier strengthening sinking current and driving capacitive load |
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