CN1912792A - Step-up device - Google Patents
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- Publication number
- CN1912792A CN1912792A CN 200610062268 CN200610062268A CN1912792A CN 1912792 A CN1912792 A CN 1912792A CN 200610062268 CN200610062268 CN 200610062268 CN 200610062268 A CN200610062268 A CN 200610062268A CN 1912792 A CN1912792 A CN 1912792A
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- Prior art keywords
- increasing apparatus
- voltage
- reference voltage
- pwm pulse
- electric capacity
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Abstract
A booster unit is prepared as connecting reference voltage circuit to PWM pulse for converting PWM pulse to be reference voltage required by host board, forming booster circuit by stopping capacity and capacity, connecting said stopping capacity to output of PWM pulse then to output of reference voltage for making PWM pulse pass through, connecting said stopping capacity to output of reference voltage then to said capacity to use voltage sun transmitted by reference voltage and PWM pulse to charge said capacity for outputting booster voltage.
Description
[technical field]
The present invention relates to a kind of increasing apparatus, relate in particular to the increasing apparatus that utilizes the electronic devices and components booster tension.
[background technology]
Power supply is in the majority with 5V, 3.3V mostly in the design of digital circuit, but also has special circumstances to need some high voltages sometimes.So just need and to reach the purpose that voltage promotes with some chips.But, adopt the mode cost of chip booster tension than higher.
[summary of the invention]
Technical matters to be solved by this invention is, a kind of increasing apparatus is provided, and reaches the purpose of booster tension without chip.
The technical solution adopted in the present invention is: a kind of increasing apparatus is provided, described increasing apparatus comprises reference voltage circuit, described reference voltage circuit is connected with pwm pulse, pwm pulse is changed into the required reference voltage of mainboard, described increasing apparatus also comprises booster circuit, and described booster circuit comprises capacitance and electric capacity, and described capacitance is connected in the pwm pulse output line, be connected in parallel with described reference voltage output line, pwm pulse is passed through; Described capacitance be connected in described electric capacity again after the reference voltage output line is connected, the voltage sum of reference voltage and pwm pulse transmission is charged to described electric capacity, the output booster voltage.
More specifically, described increasing apparatus also comprises unidirectional conducting components and parts, and described unidirectional conducting components and parts are connected between reference voltage output line and pwm pulse output line and reference voltage output line tie point and the described electric capacity, play unidirectional conducting effect.
More specifically, described unidirectional conducting components and parts are diode or triode.
More specifically, described increasing apparatus also comprises stabilivolt, and described stabilivolt is connected in parallel in described electric capacity, and the voltage that the back of boosting is exported carries out voltage stabilizing.
More specifically, described increasing apparatus also comprises filter capacitor, and described filter capacitor and described electric capacity are connected in parallel, and the voltage that booster circuit is exported carries out filtering.
More specifically, described increasing apparatus comprises at least one booster circuit.
More specifically, described reference voltage circuit comprises schottky diode, holds stream inductance and electric capacity, and described pwm pulse is through schottky diode and hold the stream inductance, again through capacitor filtering output 5V DC voltage.
More specifically, described reference voltage circuit is connected with the DC-DC chip of IC U1 bottom, and described DC-DC chip converts the 12V direct current to pwm pulse by the BUCK formula.
The present invention compared with prior art, beneficial effect is: increasing apparatus of the present invention is by increasing electric capacity, to the voltage stack of the voltage and the reference voltage circuit of pwm pulse, electric capacity is charged, booster tension obtains high pressure, than saving cost by the mode of chip booster tension.
[description of drawings]
Fig. 1 is the circuit diagram of increasing apparatus of the present invention.
[embodiment]
See also Fig. 1, increasing apparatus of the present invention comprises reference voltage circuit, first booster circuit, second booster circuit and the 3rd booster circuit.Increasing apparatus of the present invention is a benchmark with the voltage of reference voltage circuit, and through each booster circuit stack pwm pulse voltage, booster tension 12V selects the booster circuit of different numbers as required, obtains the high pressure that needs.
In the increasing apparatus as shown in Figure 1, point 1,2,3,4 all is the point of the certain pwm pulse of dutycycle, and amplitude is 12V.
Described reference voltage circuit comprises schottky diode D1, holds stream inductance L 1 and capacitor C 1.Described reference voltage circuit is connected with the DC-DC chip of IC U1 bottom.By BUCK formula conversion pwm pulse, described pwm pulse is through schottky diode D1 and hold stream inductance L 1 with the 12V direct current for described DC-DC chip, again by capacitor C 1 filtering output 5V DC voltage.The A point voltage is 5V among Fig. 1 at this moment.
Described first booster circuit comprises diode D2, capacitance Ca, diode D3 and capacitor C 2.Described diode D2 is connected with the A point, and described capacitance Ca is connected with pwm pulse output terminal 2.Described diode D2, capacitance Ca and diode D3 are connected in described diode D3 and capacitor C 2 again after the B point connects.
Described diode D2 is connected with the A point of reference voltage circuit, and the 5V voltage of reference voltage circuit is transferred to the B point by diode D2.The main effect of described diode D2 is unidirectional conducting, can substitute with unidirectional conducting components and parts such as other triodes.Described capacitance Ca be installed in a little 2 and some B between, make pwm pulse with the 12V voltage transmission to the B point, and make the 5V voltage of described reference voltage circuit transmission only flow to capacitor C 2.Described diode D3 plays unidirectional conducting effect, can substitute with other unidirectional conducting components and parts.
At this moment, the voltage that B is ordered is the reference voltage circuit output voltage and puts 2 places corresponding pwm pulse voltage sum, promptly is the voltage sum of the pwm pulse of 12V with 5V reference voltage and amplitude.The voltage sum of 2 pairs of 5V reference voltages of described capacitor C and pwm pulse transmission is charged.The voltage of capacitor C 2 was 5+12=17V when electric capacity was saturated, and the output voltage of promptly described first booster circuit is 17V.
Described second booster circuit comprises diode D4, capacitance Cb, diode D5 and capacitor C 3.Described diode D4 is connected with the output terminal of first booster circuit, and described capacitance Cb is connected with pwm pulse output terminal 3.Described diode D4, capacitance Cb and diode D5 are connected in described diode D5 and capacitor C 3 again after the C point connects.
Described diode D4 is connected with the output terminal of first booster circuit, and the 17V voltage of first booster circuit is transferred to the C point by diode.The main effect of described diode D4 is unidirectional conducting, can substitute with other unidirectional conducting components and parts.Described capacitance Cb be installed in a little 3 and some C between, make pwm pulse be transferred to the C point.Described diode D5 plays unidirectional conducting effect, can substitute with other unidirectional conducting components and parts.
At this moment, the voltage that C is ordered is the reference voltage circuit output voltage and puts 3 places corresponding pwm pulse voltage sum, promptly is the voltage sum of the pwm pulse of 12V with 17V reference voltage and amplitude.The voltage sum of 3 pairs of 17V reference voltages of described capacitor C and pwm pulse transmission is charged.The voltage of capacitor C 3 was 17+12=29V when electric capacity was saturated, and the output voltage of promptly described second booster circuit is 29V.
Described the 3rd booster circuit comprises diode D6, capacitance Cc, diode D7 and capacitor C 4.Described diode D6 is connected with the output terminal of second booster circuit, and described capacitance Cc is connected with pwm pulse output terminal 4.Described diode D6, capacitance Cc and diode D7 are connected in described diode D7 and capacitor C 4 again after the D point connects.
Described diode D6 is connected with the output terminal of second booster circuit, and the 29V voltage that second booster circuit is exported is transferred to the D point by diode.The main effect of described diode D6 is unidirectional conducting, can substitute with other unidirectional conducting components and parts.Described capacitance Cc be installed in a little 4 and some D between, make pwm pulse be transferred to the D point.Described diode D7 plays unidirectional conducting effect, can substitute with other unidirectional conducting components and parts.
At this moment, the voltage that D is ordered is the reference voltage circuit output voltage and puts 4 places corresponding pwm pulse voltage sum, promptly is the voltage sum of the pwm pulse of 12V with 29V reference voltage and amplitude.The voltage sum of 4 pairs of 29V reference voltages of described capacitor C and pwm pulse transmission is charged.The voltage of capacitor C 3 was 29+12=41V when electric capacity was saturated, and the output voltage of promptly described second booster circuit is 41V.
The output terminal of described the 3rd booster circuit is connected with 33V stabilivolt D7 and filter capacitor C5.The output terminal of described the 3rd booster circuit is connected at the E point with stabilivolt D7.Described 33V stabilivolt D7 and filter capacitor C5 carry out obtaining the 33V voltage of voltage regulation after voltage stabilizing and the filtering to the 41V voltage of described the 4th booster circuit output.
Be output as stable DC 5V voltage behind described pwm pulse process inductance L 1 and diode D1 and the filter capacitor, use for mainboard.Described 5V voltage flows to the B point through diode D2 simultaneously, and this moment, the PWM ripple at 2 places flowed to B point and 5V voltage stack (the following figure of stack back waveform) through capacitance Ca.Through D3 capacitor C 2 is charged simultaneously, it is 12V+5V=17V that charging finishes back voltage.Above-mentioned 17V voltage flows to the C point through D4 and 3 PWM stacks of flowing through Cb are charged to capacitor C 3.When, voltage was 17+12=29V when described capacitor C 3 was full of.In like manner drawing E place voltage is to obtain the 33V burning voltage behind the 41V process 33V stabilivolt D7 filter capacitor C5, can be used for the voltage of coordinating of tuner.
Claims (8)
1, a kind of increasing apparatus, described increasing apparatus comprises reference voltage circuit, described reference voltage circuit is connected with pwm pulse, pwm pulse is changed into the required reference voltage of mainboard, it is characterized in that, described increasing apparatus also comprises booster circuit, described booster circuit comprises capacitance and electric capacity, described capacitance is connected in the pwm pulse output line, is connected in parallel with described reference voltage output line, and pwm pulse is passed through; Described capacitance be connected in described electric capacity again after the reference voltage output line is connected, the voltage sum of reference voltage and pwm pulse transmission is charged to described electric capacity, the output booster voltage.
2, increasing apparatus as claimed in claim 1, it is characterized in that, described increasing apparatus also comprises unidirectional conducting components and parts, and described unidirectional conducting components and parts are connected between reference voltage output line and the described point and described electric capacity that is connected in parallel, and play unidirectional conducting effect.
3, increasing apparatus as claimed in claim 2 is characterized in that, described unidirectional conducting components and parts are diode or triode.
4, increasing apparatus as claimed in claim 1 is characterized in that, described increasing apparatus also comprises stabilivolt, and described stabilivolt is connected in parallel in described electric capacity, and the voltage that the back of boosting is exported carries out voltage stabilizing.
5, increasing apparatus as claimed in claim 1 is characterized in that, described increasing apparatus also comprises filter capacitor, and described filter capacitor and described electric capacity are connected in parallel, and the voltage that booster circuit is exported carries out filtering.
6, increasing apparatus as claimed in claim 1 is characterized in that, described increasing apparatus comprises at least one booster circuit.
7, increasing apparatus as claimed in claim 1 is characterized in that, described reference voltage circuit comprises schottky diode, holds stream inductance and electric capacity, and described pwm pulse is through schottky diode and hold the stream inductance, again through capacitor filtering output 5V DC voltage.
8, increasing apparatus as claimed in claim 1 is characterized in that, described reference voltage circuit is connected with the DC-DC chip of ICU1 bottom, and described DC-DC chip converts the 12V direct current to pwm pulse by the BUCK formula.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100622683A CN100483289C (en) | 2006-08-23 | 2006-08-23 | Step-up device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100622683A CN100483289C (en) | 2006-08-23 | 2006-08-23 | Step-up device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1912792A true CN1912792A (en) | 2007-02-14 |
| CN100483289C CN100483289C (en) | 2009-04-29 |
Family
ID=37721743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100622683A Expired - Fee Related CN100483289C (en) | 2006-08-23 | 2006-08-23 | Step-up device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100483289C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383558B (en) * | 2007-07-04 | 2012-10-10 | 瑞萨电子株式会社 | Step-up power supply circuit and stepping-up method |
| CN104079168A (en) * | 2013-03-28 | 2014-10-01 | 日本电波工业株式会社 | Step up circuit and radiation meter |
| CN104953830A (en) * | 2015-06-03 | 2015-09-30 | 广东欧珀移动通信有限公司 | Boosted circuit and power switch |
| WO2019018148A1 (en) * | 2017-07-19 | 2019-01-24 | Ge Oil & Gas Esp, Inc. | High voltage generation circuit and method |
-
2006
- 2006-08-23 CN CNB2006100622683A patent/CN100483289C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383558B (en) * | 2007-07-04 | 2012-10-10 | 瑞萨电子株式会社 | Step-up power supply circuit and stepping-up method |
| CN104079168A (en) * | 2013-03-28 | 2014-10-01 | 日本电波工业株式会社 | Step up circuit and radiation meter |
| CN104953830A (en) * | 2015-06-03 | 2015-09-30 | 广东欧珀移动通信有限公司 | Boosted circuit and power switch |
| WO2019018148A1 (en) * | 2017-07-19 | 2019-01-24 | Ge Oil & Gas Esp, Inc. | High voltage generation circuit and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100483289C (en) | 2009-04-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen Skyworth Lighting Electric Co., Ltd. Assignor: Shenzhen Skyworth-RGB Electronics Co., Ltd. Contract record no.: 2011440020419 Denomination of invention: Special DC/AC power supply convertor with DC boosting device for electric car Granted publication date: 20090429 License type: Exclusive License Open date: 20070214 Record date: 20111123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20150823 |
|
| EXPY | Termination of patent right or utility model |