TWM462685U - Charge pump circuit with leakage breaker - Google Patents
Charge pump circuit with leakage breaker Download PDFInfo
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- TWM462685U TWM462685U TW101223618U TW101223618U TWM462685U TW M462685 U TWM462685 U TW M462685U TW 101223618 U TW101223618 U TW 101223618U TW 101223618 U TW101223618 U TW 101223618U TW M462685 U TWM462685 U TW M462685U
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Description
本創作係有關於一種具有漏電遮斷之電荷幫浦電路，其係應泛用於各式汽車發電機，用以避免倍壓電路漏電，造成電壓不足，使得功率元件導通電阻大，流經電流產生消耗功率加大，以致功率元件可能因過熱而縮短使用壽命。This creation is about a kind of charge pump circuit with leakage interception, which should be widely used in various types of automobile generators to avoid leakage of voltage doubler circuit, resulting in insufficient voltage, which makes the power element have large on-resistance and flows through. The current generation consumes more power, so that the power components may be shortened due to overheating.
汽車發電機系統工作電路，其主要係由電壓調節器、發電機轉子、定子線圈、一整流橋(D1-D6)、功率晶體及電池組成。汽車發動時，由內燃機皮帶帶動發電機運轉，同時激磁電流流入轉動中之發電機轉子，而產生磁場，發電機之定子感應此磁場而產生交流電，交流電經整流橋轉換為直流電輸出，此輸出對電池充電，提供汽車電子器件用電需求。The working circuit of the automobile generator system is mainly composed of a voltage regulator, a generator rotor, a stator coil, a rectifier bridge (D1-D6), a power crystal and a battery. When the car is started, the generator is driven by the internal combustion engine belt, and the excitation current flows into the rotating generator rotor to generate a magnetic field. The stator of the generator senses the magnetic field to generate alternating current, and the alternating current is converted into a direct current output through the rectifier bridge. The battery is charged to provide power requirements for automotive electronics.
請參閱第一圖，為B系統之發電機系統工作電路，主要用於美系汽車發電機，其特點為轉子1激磁電流由電池正端2先經功率晶體3後，再經轉子1到電池負端，比對於發電機上，轉子1激磁電流則是由發電機之二碳刷分別流出，轉子1激磁電流由碳刷之Field端流入，經轉子1從接地端流出。Please refer to the first figure, which is the working circuit of the generator system of the B system. It is mainly used for the American automobile generator. It is characterized in that the excitation current of the rotor 1 is passed from the positive terminal 2 of the battery to the power crystal 3, and then through the rotor 1 to the battery. Negative end, compared to the generator, the excitation current of the rotor 1 is respectively discharged by the two carbon brushes of the generator, and the excitation current of the rotor 1 flows from the field end of the carbon brush, and flows out from the ground through the rotor 1.
因為功率晶體3之源極端(source)接了轉子1，在發電機電路中，轉子1端的電壓至少有12V，所以如果要使功率晶體1工作，閘極(GATE)端電壓需再大於源極(SOURCE)端(也就是轉子端)電壓，所以需要電荷幫浦用倍壓電路升高閘極(GATE)端電壓，使功率晶體1可以工作。Since the source of the power crystal 3 is connected to the rotor 1, in the generator circuit, the voltage at the rotor 1 is at least 12V, so if the power crystal 1 is to be operated, the voltage at the gate (GATE) terminal needs to be greater than the source. The (SOURCE) terminal (that is, the rotor terminal) voltage, so the charge pump is required to increase the gate voltage (GATE) voltage by the voltage doubler circuit, so that the power crystal 1 can work.
請參閱第二圖、第三及第四圖，為習知汽車發電機之電荷幫浦電路，其係用以連接於發電機之工作電路4，其包括有一倍壓電路單元5及一開關控制單元6。倍壓電路單元12係由電阻R1、R2，二極管D1、D2，電容C1，功率晶體Q5、Q6及輸入訊號處理元件Level Shift組成；開關控制單元14係由功率晶Q4及齊納二極體ZD1組成。Please refer to the second, third and fourth figures, which are charge pump circuits of conventional automobile generators, which are connected to the working circuit 4 of the generator, which comprises a voltage doubler circuit unit 5 and a switch. Control unit 6. The voltage doubler circuit unit 12 is composed of resistors R1 and R2, diodes D1 and D2, capacitor C1, power crystals Q5 and Q6, and input signal processing element Level Shift. The switch control unit 14 is composed of power crystal Q4 and Zener diode. ZD1 composition.
倍壓電路單元5係用以接收一來自電瓶電壓之穩定電壓信號7及一來自電壓調節器之倍壓控制信號8，為固定頻率之脈波信號，其波形如第四圖，當倍壓控制信號8為穩定頻率之脈波時，倍壓控制信號8維持倍壓電路單元5穩定之倍壓信號輸出9，如第五圖之波形。The voltage doubler circuit unit 5 is configured to receive a stable voltage signal 7 from the battery voltage and a voltage double control signal 8 from the voltage regulator, which is a pulse signal of a fixed frequency, and the waveform is as shown in the fourth figure. When the control signal 8 is a pulse wave of a stable frequency, the voltage doubler control signal 8 maintains the voltage doubler signal output 9 stabilized by the voltage doubler circuit unit 5, as in the waveform of the fifth figure.
開關控制單元6接收倍壓電路單元5之倍壓信號輸出9及一來自電壓調節器之開關控制信號10，如第六圖之波形。The switch control unit 6 receives the voltage doubled signal output 9 of the voltage doubler circuit unit 5 and a switch control signal 10 from the voltage regulator, such as the waveform of the sixth figure.
當開關控制信號10為低電位時，將拉低倍壓輸出9之電壓，使功率晶體Q4關閉，倍壓電路單元5之倍壓輸出9為高電位，則開啟功率晶體Q1。When the switch control signal 10 is low, the voltage of the double voltage output 9 is pulled down, the power crystal Q4 is turned off, and the voltage doubled output 9 of the voltage doubler circuit unit 5 is high, the power crystal Q1 is turned on.
當開關控制信號10為高電位時，即開啟功率晶體Q4，使倍壓電路單元5之倍壓輸出9為低電位，則關閉功率晶體Q1，並將功率晶體Q1殘餘電荷對地洩放，同時也會使倍壓電路單元5內之電容C1所儲之部份電荷放掉，使原本倍壓電路單元5因為有對地迴路而漏電，因此在開關控制信號10每次轉態為低電位時，倍壓輸信號出9之初始電壓不足，如第五圖圈起部份，將導致功率晶體 Q1導通電阻大，流過電流造成增加消耗功率，使得功率元件Q1溫度上升，縮短使用壽命。When the switch control signal 10 is at a high potential, that is, the power crystal Q4 is turned on, so that the voltage doubler output 9 of the voltage doubler circuit unit 5 is low, the power crystal Q1 is turned off, and the residual charge of the power crystal Q1 is discharged to the ground. At the same time, part of the charge stored in the capacitor C1 in the voltage doubler circuit unit 5 is discharged, so that the original voltage doubler circuit unit 5 leaks due to the ground loop, so the switch control signal 10 is changed every time. At low potential, the initial voltage of the doubling signal is insufficient. As shown in the fifth circle, it will lead to the power crystal. Q1 has a large on-resistance, and the current flowing through causes an increase in power consumption, so that the temperature of the power element Q1 rises and the service life is shortened.
本創作主要目的在提供一種具有漏電遮斷之電荷幫浦電路，用以避免倍壓電路漏電，造成電壓不足，使得功率元件導通電阻大，流經電流產生消耗功率加大，以致功率元件因過熱而使用壽命縮短之目的。The main purpose of this creation is to provide a charge pump circuit with leakage blocking to avoid leakage of the voltage doubler circuit, resulting in insufficient voltage, which makes the power element have a large on-resistance, and the power consumed by the current is increased, so that the power component is Overheating and shortening the service life.
為達上述之目的，本創作之特徵在於包括有一倍壓電路單元，其係用以接收一具備穩定電壓信號V(BAT)及一倍壓控制信號，該倍壓控制信號用以維持倍壓電路單元穩定之倍壓信號輸出；及一開關控制單元，其包括有第一開關單元及一第二開關單元，用以接收一開關控制信號，當該開關控制信號為低電位(low)時，該第一開關單元開啟，讓該倍壓電路單元之倍壓輸出啟動功率元件導通，使該工作電路形成迴路，同時該開關控制信號關閉該第二開關單元，使其不作動；當該開關控制信號為高電位(high)時，該倍壓電路單元之倍壓信號輸出仍然持續，該第一開關單元關閉，使該倍壓電路單元之倍壓信號輸出不可通過，該功率元件即不導通，同時該第二開關單元開啟，使該功率元件殘留電量可對地洩放。For the above purposes, the present invention is characterized in that it comprises a voltage doubling circuit unit for receiving a stable voltage signal V (BAT) and a voltage double control signal for maintaining a voltage doubler. a circuit unit stable double voltage signal output; and a switch control unit including a first switch unit and a second switch unit for receiving a switch control signal when the switch control signal is low (low) The first switch unit is turned on, so that the voltage double output of the voltage doubler circuit unit starts the power component to be turned on, so that the working circuit forms a loop, and the switch control signal turns off the second switch unit to make it not act; When the switch control signal is high, the voltage doubler signal output of the voltage doubler circuit unit continues, and the first switch unit is turned off, so that the voltage doubler signal output of the voltage doubler circuit unit is not passed, and the power component is That is, it is not turned on, and the second switch unit is turned on, so that the residual power of the power component can be discharged to the ground.
如是，可遮斷漏電，避免功率晶體24導通電阻變大，流經電流產生消耗功率加大，以致其因過熱而縮短使用壽命。If so, the leakage can be blocked, and the on-resistance of the power crystal 24 can be prevented from becoming large, and the power consumed by the current flow is increased, so that the service life is shortened due to overheating.
本創作之上述及其它目的、優點和特色由以下較佳實例之詳細說明並參考圖式俾得以更深入了解。The above and other objects, advantages and features of the present invention are apparent from the following detailed description of the preferred embodiments.
請參閱第七圖、第八圖本創作具漏電遮斷之電荷幫浦(Charge pump)電路，其係用以保護發電機之工作電路中20之功率元件24，該工作電路20包括有蓄電池22、功率元件24及轉子26，該電荷幫浦電路包括有一倍壓電路單元30及一開關控制單元32。Please refer to the seventh diagram and the eighth diagram for creating a charge pump circuit with leakage blocking for protecting the power component 24 of the working circuit of the generator 20, the working circuit 20 including the battery 22 The power component 24 and the rotor 26 include a voltage doubling circuit unit 30 and a switch control unit 32.
倍壓電路單元30，其係用以接收一具備穩定電壓信號V(BAT)34及一倍壓控制信號36，倍壓控制信號36用以維持倍壓電路單元30穩定之倍壓信號38輸出；其中該穩定電壓信號34為蓄電池電壓，倍壓控制信號為36為固定頻率之脈波信號，如第九圖所示，倍壓信號38如第十圖所示。倍壓電路單元30係由電阻R1 40、電阻R2 42、二極管D1 44、二極管D2 46、電容C1 48、功率晶體Q5 50、功率晶體Q6 52及輸入信號處理器Level Shift 54組成。The voltage doubling circuit unit 30 is configured to receive a voltage doubling control signal 36 having a stable voltage signal V(BAT) 34 and a voltage doubling control signal 36 for maintaining the voltage doubling signal 38 stabilized by the voltage doubling circuit unit 30. The output voltage signal 34 is a battery voltage, and the voltage doubler control signal is 36 a pulse wave signal of a fixed frequency. As shown in FIG. 9, the voltage doubler signal 38 is as shown in FIG. The voltage doubling circuit unit 30 is composed of a resistor R1 40, a resistor R2 42 , a diode D1 44 , a diode D2 46 , a capacitor C1 48 , a power crystal Q5 50 , a power crystal Q6 52 , and an input signal processor Level Shift 54 .
一開關控制單元32，其包括有第一開關單元56及一第二開關單元58，用以接收一開關控制信號60，開關控制信號60之波形為第十一圖，當開關控制信號60為低電位(low)時，第一開關單元56開啟，讓倍壓電路單元30之倍壓信號38輸出啟動功率元件24導通，使工作電路1形成迴路，同時開關控制信號60關閉第二開關單元58，使其不作動；當開關控制信號60為高電位(high)時，倍壓電路單元32之倍壓信號38輸出仍然持續，第一開關單 元56關閉，使倍壓電路單元30之倍壓信號38輸出不可通過，功率元件24即不導通，同時第二開關單元58開啟，使功率元件24殘留電量可對地洩放。其中開關控制單元32係由功率晶體Q4 62及齊納二極體ZD1 64組成。A switch control unit 32 includes a first switch unit 56 and a second switch unit 58 for receiving a switch control signal 60. The waveform of the switch control signal 60 is the eleventh figure, and the switch control signal 60 is low. When the potential is low, the first switching unit 56 is turned on, so that the voltage doubler signal 38 of the voltage multiplying circuit unit 30 outputs the starting power element 24 to be turned on, so that the working circuit 1 forms a loop, and the switch control signal 60 turns off the second switching unit 58. So that it does not act; when the switch control signal 60 is high, the voltage doubler signal 38 output of the voltage doubler circuit unit 32 continues, the first switch The element 56 is turned off, so that the output of the voltage doubler signal 38 of the voltage doubler circuit unit 30 is not passed, and the power element 24 is not turned on, and the second switching unit 58 is turned on, so that the residual power of the power element 24 can be discharged to the ground. The switch control unit 32 is composed of a power crystal Q4 62 and a Zener diode ZD1 64.
另外，更可包括有一倍壓控制信號處理單元61，用以同時接收倍壓控制信號36及開關控制信號60，使信號倍壓控制信號為36可為變動頻率之脈波信號，如第十二圖所示，請參閱第十四圖之開關控制信號，當開關控制信號60為低電位(low)時，倍壓控制信號之頻率為高，以確保有足夠的電荷幫浦輸出，如第十三圖所示；當開關控制信號60為高電位(high)時，倍壓控制信號之頻率為低，可適當降低電路之工作電流，減少功率損耗，電荷幫浦不輸出。In addition, a voltage control signal processing unit 61 may be further included for receiving the voltage doubler control signal 36 and the switch control signal 60 at the same time, so that the signal double voltage control signal is 36, which may be a pulse wave signal of a variable frequency, such as the twelfth As shown in the figure, please refer to the switch control signal in Figure 14. When the switch control signal 60 is low (low), the frequency of the voltage doubler control signal is high to ensure that there is enough charge pump output, such as the tenth. When the switch control signal 60 is high, the frequency of the voltage doubler control signal is low, which can appropriately reduce the operating current of the circuit, reduce the power loss, and the charge pump does not output.
如是，可遮斷漏電，避免功率晶體24導通電阻變大，流經電流產生消耗功率加大，以致其因過熱而縮短使用壽命。If so, the leakage can be blocked, and the on-resistance of the power crystal 24 can be prevented from becoming large, and the power consumed by the current flow is increased, so that the service life is shortened due to overheating.
在較佳實施例之詳細說明中所提出之具體實施例僅為易於明瞭本創作之技術內容，並非將本創作狹義地限制於實施例，凡依本創作之精神及以下申請專利範圍之情況所作之種種變化實施均屬本發明之範圍。The specific embodiments described in the detailed description of the preferred embodiments are merely for the purpose of the invention, and the invention is not limited to the embodiments, and the invention is not limited to the embodiments. Various variations of the implementation are within the scope of the invention.
20‧‧‧工作電路中20‧‧‧Working circuit
22‧‧‧蓄電池22‧‧‧Battery
24‧‧‧功率元件24‧‧‧Power components
26‧‧‧轉子26‧‧‧Rotor
30‧‧‧倍壓電路單元30‧‧‧ double voltage circuit unit
32‧‧‧開關控制單元32‧‧‧Switch Control Unit
34‧‧‧穩定電壓信號34‧‧‧Stabilized voltage signal
36‧‧‧倍壓控制信號36‧‧‧double pressure control signal
38‧‧‧倍壓信號38‧‧‧ double pressure signal
40‧‧‧電阻R140‧‧‧Resistor R1
42‧‧‧電阻R242‧‧‧Resistor R2
44‧‧‧二極管D144‧‧‧Diode D1
46‧‧‧二極管D246‧‧‧Diode D2
48‧‧‧電容C148‧‧‧Capacitor C1
50‧‧‧功率晶體Q550‧‧‧Power Crystal Q5
52‧‧‧功率晶體Q652‧‧‧Power Crystal Q6
54‧‧‧輸入信號處理器Level Shift54‧‧‧Input Signal Processor Level Shift
56‧‧‧第一開關單元56‧‧‧First switch unit
58‧‧‧第二開關單元58‧‧‧Second switch unit
60‧‧‧開關控制信號60‧‧‧Switch control signal
62‧‧‧功率晶體Q462‧‧‧Power Crystal Q4
64‧‧‧齊納二極體ZD164‧‧‧Zina diode ZD1
61‧‧‧倍壓控制信號處理單元61‧‧‧Multiplier control signal processing unit
第一圖為B系統之發電機系統工作電路。The first picture shows the generator system working circuit of the B system.
第二圖為習知電荷幫浦之工作電路圖。The second figure is a working circuit diagram of a conventional charge pump.
第三圖為習知電荷幫浦之工作方塊圖。The third picture is the working block diagram of the conventional charge pump.
第四圖為第三圖之倍壓控制信號之波形圖。The fourth picture is the waveform diagram of the voltage doubler control signal of the third figure.
第五圖為第三圖之倍壓信號輸出之波形圖。The fifth picture is the waveform diagram of the double voltage signal output of the third figure.
第六圖為第三圖之開關控制信號之波形圖。The sixth picture is the waveform diagram of the switch control signal of the third figure.
第七圖為本創作具漏電遮斷之電荷幫浦(Charge pump)電路圖。The seventh figure is a circuit diagram of a charge pump with a leakage interception.
第八圖為第七圖之工作方塊圖。The eighth figure is the working block diagram of the seventh figure.
第九圖為第八圖之固定頻率之倍壓控制信號之波形圖。The ninth figure is a waveform diagram of the voltage doubler control signal of the fixed frequency of the eighth figure.
第十圖為第八圖之倍壓信號輸出之波形圖。The tenth figure is the waveform diagram of the output of the double voltage signal of the eighth figure.
第十一圖為第八圖之開關控制信號之波形圖。The eleventh figure is a waveform diagram of the switch control signal of the eighth figure.
第十二圖為第八圖之變動頻率之倍壓控制信號之波形圖。Figure 12 is a waveform diagram of the voltage doubler control signal of the variable frequency of the eighth figure.
第十三圖為第十一圖之倍壓控制信號輸出之波形圖。The thirteenth picture is a waveform diagram of the output of the voltage doubler control signal of the eleventh figure.
第十四圖為第十一圖之開關控制信號之波形圖Figure 14 is the waveform diagram of the switch control signal of the eleventh figure.
20‧‧‧工作電路中20‧‧‧Working circuit
22‧‧‧蓄電池22‧‧‧Battery
24‧‧‧功率元件24‧‧‧Power components
26‧‧‧轉子26‧‧‧Rotor
30‧‧‧倍壓電路單元30‧‧‧ double voltage circuit unit
32‧‧‧開關控制單元32‧‧‧Switch Control Unit
34‧‧‧穩定電壓信號34‧‧‧Stabilized voltage signal
36‧‧‧倍壓控制信號36‧‧‧double pressure control signal
38‧‧‧倍壓信號38‧‧‧ double pressure signal
56‧‧‧第一開關單元56‧‧‧First switch unit
58‧‧‧第二開關單元58‧‧‧Second switch unit
60‧‧‧開關控制信號60‧‧‧Switch control signal
61‧‧‧倍壓控制信號處理單元61‧‧‧Multiplier control signal processing unit
Claims (6)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101223618U TWM462685U (en) | 2012-12-06 | 2012-12-06 | Charge pump circuit with leakage breaker |
| CN201320555610.9U CN203434861U (en) | 2012-12-06 | 2013-09-06 | Charge pump circuit with leakage protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101223618U TWM462685U (en) | 2012-12-06 | 2012-12-06 | Charge pump circuit with leakage breaker |
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| Publication Number | Publication Date |
|---|---|
| TWM462685U true TWM462685U (en) | 2013-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| TW101223618U TWM462685U (en) | 2012-12-06 | 2012-12-06 | Charge pump circuit with leakage breaker |
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|---|---|
| CN (1) | CN203434861U (en) |
| TW (1) | TWM462685U (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3883110A1 (en) | 2018-04-12 | 2021-09-22 | Shenzhen Goodix Technology Co., Ltd. | Digital control circuit, charge pump circuit and controlling method thereof |
-
2012
- 2012-12-06 TW TW101223618U patent/TWM462685U/en not_active IP Right Cessation
-
2013
- 2013-09-06 CN CN201320555610.9U patent/CN203434861U/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN203434861U (en) | 2014-02-12 |
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Legal Events
| Date | Code | Title | Description |
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| MK4K | Expiration of patent term of a granted utility model |