TWI602044B - Double half voltage generator - Google Patents
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Description
本發明是有關於一種電壓產生器，特別是指一種利用較少數量電容器的雙半電壓產生器。 This invention relates to a voltage generator, and more particularly to a dual half voltage generator that utilizes a relatively small number of capacitors.
參閱圖1，在許多的電路應用中，當來自電源的輸入電壓大於電路中實際要使用的電壓時，例如實際要使用的電壓等於輸入電壓的一半時，為了減少電流消耗會利用半電壓產生器來減少功耗。習知的半電壓產生器包含一第一電容器C91、一第二電容器C92、一第一開關S91、一第二開關S92、一第三開關S93、及一第四開關S94。該第一電容器C91及該第二電容器C92都包括一第一端及一第二端。該第一開關S91、該第二開關S92、該第三開關S93、及該第四開關S94都包括一第一端及一第二端。該第一電容器C91的該第一端電連接該第一開關S91的該第一端及該第二開關S92的該第一端。該第一電容器C91的該第二端電連接該第三開關S93的該第一端及該第四開關S94的該第一端。該第二電容器C92的該第一端電連接該第二開關S92的該第二端及該第三開關S93的該第二端。該第二電容器C92的該第二端及該第四開關S94的該第二端都電連接地GND。該第一開關S91的該第二端接收一第一電源電壓V1。 Referring to Figure 1, in many circuit applications, when the input voltage from the power supply is greater than the voltage actually used in the circuit, such as when the actual voltage to be used is equal to half the input voltage, a half voltage generator is utilized to reduce current consumption. To reduce power consumption. The conventional half voltage generator includes a first capacitor C91, a second capacitor C92, a first switch S91, a second switch S92, a third switch S93, and a fourth switch S94. The first capacitor C91 and the second capacitor C92 each include a first end and a second end. The first switch S91, the second switch S92, the third switch S93, and the fourth switch S94 each include a first end and a second end. The first end of the first capacitor C91 is electrically connected to the first end of the first switch S91 and the first end of the second switch S92. The second end of the first capacitor C91 is electrically connected to the first end of the third switch S93 and the first end of the fourth switch S94. The first end of the second capacitor C92 is electrically connected to the second end of the second switch S92 and the second end of the third switch S93. The second end of the second capacitor C92 and the second end of the fourth switch S94 are both electrically connected to the ground GND. The second end of the first switch S91 receives a first power voltage V1.
參閱圖1與圖2，該第一開關S91至該第四開關S94分別操作於一第一相位及一第二相位，當操作在該第一相位時，該第一開關S91及該第三開關S93導通，且該第二開關S92及該第四開關S94不導通，此時，該第一電容器 C91及該第二電容器C92形成串聯，使得該第一電容器C91及該第二電容器C92的跨壓都是該第一電源電壓V1的二分之一。 Referring to FIG. 1 and FIG. 2, the first switch S91 to the fourth switch S94 respectively operate on a first phase and a second phase. When operating in the first phase, the first switch S91 and the third switch S93 is turned on, and the second switch S92 and the fourth switch S94 are not turned on. At this time, the first capacitor The C91 and the second capacitor C92 are connected in series such that the voltage across the first capacitor C91 and the second capacitor C92 is one-half of the first power voltage V1.
參閱圖1與圖3，當操作在該第二相位時，該第二開關S92及該第四開關S94導通，且該第一開關S91及該第三開關S93不導通，此時，該第一電容器C91及該第二電容器C92形成並聯，使得跨壓都是該第一電源電壓V1的二分之一的該第一電容器C91及該第二電容器C92的電荷共享，並輸出該第一電源電壓V1的二分之一。 Referring to FIG. 1 and FIG. 3, when the second phase is operated, the second switch S92 and the fourth switch S94 are turned on, and the first switch S91 and the third switch S93 are not turned on. At this time, the first The capacitor C91 and the second capacitor C92 are formed in parallel such that the charge sharing of the first capacitor C91 and the second capacitor C92, which is one-half of the first power supply voltage V1, is shared, and the first power supply voltage is output. One-half of V1.
習知的這種半電壓產生器需要利用二個電容器及四個開關來產生一個電源電壓的半電壓，所以，當要產生二種電源電壓的半電壓時，則共需要利用四個電容器及八個開關來產生。如何有效解少電容器的使用數量便成為一個重要的課題。 The conventional half voltage generator needs to use two capacitors and four switches to generate a half voltage of a power supply voltage. Therefore, when a half voltage of two power supply voltages is to be generated, a total of four capacitors and eight capacitors are required. A switch to generate. How to effectively reduce the number of capacitors used has become an important issue.
因此，本發明之目的，即在提供一種電容器數量較少的雙半電壓產生器。 Accordingly, it is an object of the present invention to provide a dual half voltage generator having a reduced number of capacitors.
於是，本發明雙半電壓產生器，適用於接收一第一電源電壓及一第二電源電壓，並包含一第一開關、一第二開關、一第三開關、一第四開關、一第五開關、一第六開關、一第七開關、一第八開關、一第一電容器、一第二電容器、及一第三電容器。 Therefore, the dual half voltage generator of the present invention is adapted to receive a first power voltage and a second power voltage, and includes a first switch, a second switch, a third switch, a fourth switch, and a fifth A switch, a sixth switch, a seventh switch, an eighth switch, a first capacitor, a second capacitor, and a third capacitor.
該第一開關至該第八開關之每一者包括一第一端及一第二端。該第一電容器至該第二電容器之每一者包括一第一端及一第二端。該第一開關至該第四開關的該第一端電連接該第一電容器的該第一端。該第五開關至該第八開關的該第一端電連接該第一電容器的該第二端。該第三開關的該第二端接收該第一電源電壓。該第七開關的該第二端接收該第二電源電壓。該第一開關的 該第二端及該第五開關的該第二端電連接該第二電容器的該第一端。該第二開關的該第二端及該第六開關的該第二端電連接該第三電容器的該第一端。該第二電容器的該第二端、該第三電容器的該第二端、該第四開關的該第二端、及該第八開關的該第二端電連接地。 Each of the first switch to the eighth switch includes a first end and a second end. Each of the first capacitor to the second capacitor includes a first end and a second end. The first end of the first switch to the fourth switch is electrically connected to the first end of the first capacitor. The first end of the fifth switch to the eighth switch is electrically connected to the second end of the first capacitor. The second end of the third switch receives the first supply voltage. The second end of the seventh switch receives the second supply voltage. The first switch The second end and the second end of the fifth switch are electrically connected to the first end of the second capacitor. The second end of the second switch and the second end of the sixth switch are electrically connected to the first end of the third capacitor. The second end of the second capacitor, the second end of the third capacitor, the second end of the fourth switch, and the second end of the eighth switch are electrically connected.
該第一開關至該第八開關依序輪流操作於一第一相位、一第二相位、一第三相位、及一第四相位之間，使得操作在每一相位時，該第一開關至該第八開關之其中不重複的二者保持導通，且其中其餘六者保持不導通，進而使得該第二電容器的跨壓為該第一電源電壓的二分之一，且該第三電容器的跨壓為該第二電源電壓的二分之一。 The first switch to the eighth switch sequentially operate between a first phase, a second phase, a third phase, and a fourth phase, such that when operating in each phase, the first switch is The two of the eighth switches that are not repeated remain conductive, and wherein the remaining six remain non-conductive, such that the voltage across the second capacitor is one-half of the first supply voltage, and the third capacitor The voltage across the voltage is one-half of the second supply voltage.
在一些實施態樣中，其中，當該第一開關至該第八開關操作在該第一相位時，該第三開關及該第五開關保持導通，且該第一開關、該第二開關、該第四開關、該第六開關至該第八開關保持不導通。當該第一開關至該第八開關操作在該第二相位時，該第一開關及該第八開關保持導通，且該第二開關至該第七開關保持不導通。當該第一開關至該第八開關操作在該第三相位時，該第二開關及該第七開關保持導通，且該第一開關、該第三開關至該第六開關、及該第八開關保持不導通。當該第一開關至該第八開關操作在該第四相位時，該第四開關及該第六開關保持導通，該第一開關至該第三開關、該第五開關、該第七開關、及該第八開關保持不導通。 In some implementations, wherein, when the first switch to the eighth switch operate in the first phase, the third switch and the fifth switch remain conductive, and the first switch, the second switch, The fourth switch, the sixth switch to the eighth switch remain non-conductive. When the first switch to the eighth switch operate in the second phase, the first switch and the eighth switch remain conductive, and the second switch to the seventh switch remain non-conductive. When the first switch to the eighth switch operate in the third phase, the second switch and the seventh switch remain conductive, and the first switch, the third switch to the sixth switch, and the eighth The switch remains non-conductive. When the first switch to the eighth switch operate in the fourth phase, the fourth switch and the sixth switch remain conductive, the first switch to the third switch, the fifth switch, the seventh switch, And the eighth switch remains non-conductive.
在一些實施態樣中，其中，該第一電容器、該第二電容器、及該第三電容器的電容值相等。 In some implementations, the capacitance values of the first capacitor, the second capacitor, and the third capacitor are equal.
在一些實施態樣中，其中，該第一電源電壓及該第二電源電壓的電壓值的極性相反且絕對值的大小相等。 In some implementations, the voltage values of the first power voltage and the second power voltage are opposite in polarity and the absolute values are equal in magnitude.
本發明至少具有以下功效：藉由該第一開關至該第八開關依序輪流操作於該第一相位至該第四相位之間，使得該雙半電壓產生器在接收二種電 源電壓的情況下，僅需要利用三個電容器及八個開關，就能產生該二種電源電壓的半電壓，故能有效減少電容器的使用數量，而解決習知半電壓產生器的電容器使用數量較多的問題。 The present invention has at least the following effects: the first switch to the eighth switch are sequentially operated between the first phase and the fourth phase, so that the dual half voltage generator receives two kinds of electricity In the case of the source voltage, only three capacitors and eight switches are needed to generate the half voltage of the two power supply voltages, so that the number of capacitors used can be effectively reduced, and the number of capacitors used in the conventional half voltage generator can be solved. More problems.
C1‧‧‧第一電容器 C1‧‧‧First Capacitor
C2‧‧‧第二電容器 C2‧‧‧second capacitor
C3‧‧‧第三電容器 C3‧‧‧ third capacitor
C91‧‧‧第一電容器 C91‧‧‧First capacitor
C92‧‧‧第二電容器 C92‧‧‧second capacitor
S1‧‧‧第一開關 S1‧‧‧ first switch
S2‧‧‧第二開關 S2‧‧‧ second switch
S3‧‧‧第三開關 S3‧‧‧ third switch
S4‧‧‧第四開關 S4‧‧‧fourth switch
S5‧‧‧第五開關 S5‧‧‧ fifth switch
S6‧‧‧第六開關 S6‧‧‧ sixth switch
S7‧‧‧第七開關 S7‧‧‧ seventh switch
S8‧‧‧第八開關 S8‧‧‧ eighth switch
S91‧‧‧第一開關 S91‧‧‧First switch
S92‧‧‧第二開關 S92‧‧‧Second switch
S93‧‧‧第三開關 S93‧‧‧ third switch
S94‧‧‧第四開關 S94‧‧‧fourth switch
V1‧‧‧第一電源電壓 V1‧‧‧First supply voltage
V2‧‧‧第二電源電壓 V2‧‧‧second supply voltage
VA‧‧‧電連接點 VA‧‧‧Electrical connection point
VB‧‧‧電連接點 VB‧‧‧ electrical connection point
GND‧‧‧地 GND‧‧‧
本發明之其他的特徵及功效，將於參照圖式的實施方式中清楚地呈現，其中：圖1是一電路圖，說明習知的一種半電壓產生器；圖2是一電路圖，輔助說明圖1的半電壓產生器操作在一第一相位時的等效電路；圖3是一電路圖，輔助說明圖1的半電壓產生器操作在一第二相位時的等效電路；圖4是一電路圖，說明本發明雙半電壓產生器的一實施例；圖5是一電路圖，輔助說明圖4的雙半電壓產生器操作在一第一相位時的等效電路；圖6是一電路圖，輔助說明圖4的雙半電壓產生器操作在一第二相位時的等效電路；圖7是一電路圖，輔助說明圖4的雙半電壓產生器操作在一第三相位時的等效電路；及圖8是一電路圖，輔助說明圖4的雙半電壓產生器操作在一第四相位時的等效電路。 Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is a circuit diagram illustrating a conventional half voltage generator; FIG. 2 is a circuit diagram, and FIG. The equivalent circuit of the half voltage generator operating in a first phase; FIG. 3 is a circuit diagram for assisting the equivalent circuit of the half voltage generator of FIG. 1 operating in a second phase; FIG. 4 is a circuit diagram, An embodiment of the double half voltage generator of the present invention is illustrated; FIG. 5 is a circuit diagram for explaining an equivalent circuit of the double half voltage generator of FIG. 4 operating in a first phase; FIG. 6 is a circuit diagram, and an auxiliary drawing is provided. An equivalent circuit of a double half voltage generator of 4 operating in a second phase; FIG. 7 is a circuit diagram for assisting an equivalent circuit of the double half voltage generator of FIG. 4 operating in a third phase; and FIG. Is a circuit diagram that assists in explaining the equivalent circuit of the dual half voltage generator of Figure 4 operating in a fourth phase.
在本發明被詳細描述之前，應當注意在以下的說明內容中，類似的元件是以相同的編號來表示。 Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.
參閱圖4，本發明雙半電壓產生器之一實施例，適用於接收一第一電源電壓V1及一第二電源電壓V2，並包含一第一開關S1、一第二開關S2、一第三開關S3、一第四開關S4、一第五開關S5、一第六開關S6、一第七開關S7、一第八開關S8、一第一電容器C1、一第二電容器C2、及一第三電容器C3。 Referring to FIG. 4, an embodiment of the dual half voltage generator of the present invention is adapted to receive a first power voltage V1 and a second power voltage V2, and includes a first switch S1, a second switch S2, and a third a switch S3, a fourth switch S4, a fifth switch S5, a sixth switch S6, a seventh switch S7, an eighth switch S8, a first capacitor C1, a second capacitor C2, and a third capacitor C3.
該第一開關S1至該第八開關S8之每一者包括一第一端及一第二端。該第一電容器C1至該第二電容器C2之每一者包括一第一端及一第二端。該第一開關S1至該第四開關S4的該第一端電連接該第一電容器C1的該第一端，該第五開關S5至該第八開關S8的該第一端電連接該第一電容器C1的該第二端。該第三開關S3的該第二端接收該第一電源電壓V1。該第七開關S7的該第二端接收該第二電源電壓V2。該第一開關S1的該第二端及該第五開關S5的該第二端電連接該第二電容器C2的該第一端。該第二開關S2的該第二端及該第六開關S6的該第二端電連接該第三電容器C3的該第一端。該第二電容器C2的該第二端、該第三電容器C3的該第二端、該第四開關S4的該第二端、及該第八開關S8的該第二端電連接地GND。 Each of the first switch S1 to the eighth switch S8 includes a first end and a second end. Each of the first capacitor C1 to the second capacitor C2 includes a first end and a second end. The first end of the first switch S1 to the fourth switch S4 is electrically connected to the first end of the first capacitor C1, and the first end of the fifth switch S5 to the eighth switch S8 is electrically connected to the first end The second end of capacitor C1. The second end of the third switch S3 receives the first power voltage V1. The second end of the seventh switch S7 receives the second power voltage V2. The second end of the first switch S1 and the second end of the fifth switch S5 are electrically connected to the first end of the second capacitor C2. The second end of the second switch S2 and the second end of the sixth switch S6 are electrically connected to the first end of the third capacitor C3. The second end of the second capacitor C2, the second end of the third capacitor C3, the second end of the fourth switch S4, and the second end of the eighth switch S8 are electrically connected to the ground GND.
該第一開關S1至該第八開關S8依序輪流操作於一第一相位、一第二相位、一第三相位、及一第四相位之間，使得操作在每一相位時，該第一開關S1至該第八開關S8之其中不重複的二者保持導通，且其中其餘六者保持不導通。 The first switch S1 to the eighth switch S8 sequentially operate between a first phase, a second phase, a third phase, and a fourth phase, such that the first switch operates at each phase. Both of the switches S1 to S8 of the eighth switch S8 remain in conduction, and the remaining six remain non-conductive.
在本實施例中，該第一電容器C1、該第二電容器C2、及該第三電容器C3的電容值的大小相等。該第一電源電壓V1及該第二電源電壓V2的電壓值的極性相反且絕對值的大小相等，例如該第一電源電壓V1的電壓值為+POW，該第二電源電壓V2的電壓值為-POW。 In this embodiment, the capacitance values of the first capacitor C1, the second capacitor C2, and the third capacitor C3 are equal in magnitude. The voltage values of the first power voltage V1 and the second power voltage V2 are opposite in polarity and the absolute values are equal. For example, the voltage value of the first power voltage V1 is +POW, and the voltage value of the second power voltage V2 is -POW.
再參閱圖4與圖5，更詳細地說，當該第一開關S1至該第八開關S8操作在該第一相位時，該第三開關S3及該第五開關S5保持導通，且該第一開關S1、該第二開關S2、該第四開關S4、該第六開關S6至該第八開關S8保持不導通，此時，該雙半電壓產生器的等效電路如圖5所示，該第一電容器C1與該第二電容器C2形成串聯，使得該第一電容器C1及該第二電容器C2的跨壓都是該第一電源電壓V1的二分之一。 Referring to FIG. 4 and FIG. 5, in more detail, when the first switch S1 to the eighth switch S8 are operated in the first phase, the third switch S3 and the fifth switch S5 remain conductive, and the first a switch S1, the second switch S2, the fourth switch S4, the sixth switch S6 to the eighth switch S8 remain non-conductive, at this time, the equivalent circuit of the double half voltage generator is as shown in FIG. The first capacitor C1 and the second capacitor C2 are connected in series such that the voltage across the first capacitor C1 and the second capacitor C2 is one-half of the first power voltage V1.
再參閱圖4與圖6，當該第一開關S1至該第八開關S8操作在該第二相位時，該第一開關S1及該第八開關S8保持導通，且該第二開關S2至該第七開關S7保持不導通，此時，該雙半電壓產生器的等效電路如圖6所示，該第一電容器C1及該第二電容器C2形成並聯，使得跨壓都是該第一電源電壓V1的二分之一的該第一電容器C1及該第二電容器C2的電荷共享，並輸出該第一電源電壓V1的二分之一，即(+POW)/2。 Referring to FIG. 4 and FIG. 6, when the first switch S1 to the eighth switch S8 are operated in the second phase, the first switch S1 and the eighth switch S8 remain conductive, and the second switch S2 to the The seventh switch S7 remains non-conductive. At this time, the equivalent circuit of the double half voltage generator is as shown in FIG. 6. The first capacitor C1 and the second capacitor C2 are connected in parallel, so that the voltage across the first power source is the first power source. The charge of the first capacitor C1 and the second capacitor C2 of one-half of the voltage V1 is shared, and one-half of the first power supply voltage V1 is output, that is, (+POW)/2.
再參閱圖4與圖7，當該第一開關S1至該第八開關S8操作在該第三相位時，該第二開關S2及該第七開關S7保持導通，且該第一開關S1、該第三開關S3至該第六開關S6、及該第八開關S8保持不導通，此時，該雙半電壓產生器的等效電路如圖7所示，該第一電容器C1與該第三電容器C3形成串聯，使得該第一電容器C1及該第三電容器C3的跨壓都是該第二電源電壓V2的二分之一。 Referring to FIG. 4 and FIG. 7 , when the first switch S1 to the eighth switch S8 are operated in the third phase, the second switch S2 and the seventh switch S7 are kept turned on, and the first switch S1, the first switch S1 The third switch S3 to the sixth switch S6 and the eighth switch S8 remain non-conductive. At this time, the equivalent circuit of the double half voltage generator is as shown in FIG. 7, the first capacitor C1 and the third capacitor. C3 is formed in series such that the voltage across the first capacitor C1 and the third capacitor C3 is one-half of the second power voltage V2.
再參閱圖4與圖8，當該第一開關S1至該第八開關S8操作在該第四相位時，該第四開關S4及該第六開關S6保持導通，該第一開關S1至該第三開關S3、該第五開關S5、該第七開關S7、及該第八開關S8保持不導通，此時，該雙半電壓產生器的等效電路如圖8所示，該第一電容器C1及該第三電容器C3形成並聯，使得跨壓都是該第二電源電壓V2的二分之一的該第一電容器C1及該第三電容器C3的電荷共享，並輸出該第二電源電壓V2的二分之一，即(-POW)/2。 Referring to FIG. 4 and FIG. 8 , when the first switch S1 to the eighth switch S8 are operated in the fourth phase, the fourth switch S4 and the sixth switch S6 are kept turned on, and the first switch S1 to the first The three switches S3, the fifth switch S5, the seventh switch S7, and the eighth switch S8 remain non-conductive. At this time, the equivalent circuit of the double half voltage generator is as shown in FIG. 8, and the first capacitor C1 And the third capacitor C3 is formed in parallel such that the charge across the first capacitor C1 and the third capacitor C3 that is one-half of the second power voltage V2 is shared, and the second power voltage V2 is output. One-half, (-POW)/2.
綜上所述，相較於習知的半電壓產生器需要使用四個電容器及八個開關，本發明藉由該第一開關S1至該第八開關S8依序輪流且循環地操作於該第一相位至該第四相位之間，使得該雙半電壓產生器在接收二種電源電壓的情況下，僅需要利用三個電容器及八個開關，就能產生該二種電源電壓的半電壓，故能有效減少電容器的使用數量，而解決習知半電壓產生器的電容器使用數量較多的問題。 In summary, the conventional half-voltage generator needs to use four capacitors and eight switches. The present invention sequentially and cyclically operates the first switch S1 to the eighth switch S8. Between one phase and the fourth phase, the dual half voltage generator can generate half voltage of the two power supply voltages by using only three capacitors and eight switches when receiving two power supply voltages. Therefore, the number of capacitors used can be effectively reduced, and the problem that the number of capacitors used in the conventional half voltage generator is large is solved.
惟以上所述者，僅為本發明之實施例而已，當不能以此限定本發明實施之範圍，凡是依本發明申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。 However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.
C1‧‧‧第一電容器 C1‧‧‧First Capacitor
C2‧‧‧第二電容器 C2‧‧‧second capacitor
C3‧‧‧第三電容器 C3‧‧‧ third capacitor
S1‧‧‧第一開關 S1‧‧‧ first switch
S2‧‧‧第二開關 S2‧‧‧ second switch
S3‧‧‧第三開關 S3‧‧‧ third switch
S4‧‧‧第四開關 S4‧‧‧fourth switch
S5‧‧‧第五開關 S5‧‧‧ fifth switch
S6‧‧‧第六開關 S6‧‧‧ sixth switch
S7‧‧‧第七開關 S7‧‧‧ seventh switch
S8‧‧‧第八開關 S8‧‧‧ eighth switch
V1‧‧‧第一電壓 V1‧‧‧ first voltage
V2‧‧‧第二電壓 V2‧‧‧second voltage
VA‧‧‧電連接點 VA‧‧‧Electrical connection point
VB‧‧‧電連接點 VB‧‧‧ electrical connection point
GND‧‧‧地 GND‧‧‧
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
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| TW105125552A TWI602044B (en) | 2016-08-11 | 2016-08-11 | Double half voltage generator |
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| TW105125552A TWI602044B (en) | 2016-08-11 | 2016-08-11 | Double half voltage generator |
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| Publication Number | Publication Date |
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| TWI602044B true TWI602044B (en) | 2017-10-11 |
| TW201805752A TW201805752A (en) | 2018-02-16 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200934078A (en) * | 2007-12-11 | 2009-08-01 | Wolfson Microelectronics Plc | Charge pump circuit and methods of operation thereof and portable audio apparatus including charge pump circuits |
| TW201117536A (en) * | 2009-11-03 | 2011-05-16 | Ili Technology Corp | Charge pump circuit and driving method thereof |
| US7990742B2 (en) * | 2006-12-22 | 2011-08-02 | Wolfson Microelectronics Plc | Charge pump circuit and methods of operation thereof |
| US8742835B2 (en) * | 2012-07-19 | 2014-06-03 | Alpha Imaging Technology Corp. | Switch circuit and charge pump using the same thereof |
| CN102640405B (en) * | 2010-11-12 | 2014-10-01 | 旭化成微电子株式会社 | Charge pump circuit, method for controlling same, and semiconductor integrated circuit |
| CN104518662A (en) * | 2013-09-29 | 2015-04-15 | 奇景光电股份有限公司 | Half-voltage ratio charge-pump circuit |
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2016
- 2016-08-11 TW TW105125552A patent/TWI602044B/en active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7990742B2 (en) * | 2006-12-22 | 2011-08-02 | Wolfson Microelectronics Plc | Charge pump circuit and methods of operation thereof |
| TW200934078A (en) * | 2007-12-11 | 2009-08-01 | Wolfson Microelectronics Plc | Charge pump circuit and methods of operation thereof and portable audio apparatus including charge pump circuits |
| TW201117536A (en) * | 2009-11-03 | 2011-05-16 | Ili Technology Corp | Charge pump circuit and driving method thereof |
| CN102640405B (en) * | 2010-11-12 | 2014-10-01 | 旭化成微电子株式会社 | Charge pump circuit, method for controlling same, and semiconductor integrated circuit |
| US8742835B2 (en) * | 2012-07-19 | 2014-06-03 | Alpha Imaging Technology Corp. | Switch circuit and charge pump using the same thereof |
| CN104518662A (en) * | 2013-09-29 | 2015-04-15 | 奇景光电股份有限公司 | Half-voltage ratio charge-pump circuit |
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