TW201334387A - Direct current/direct current converter - Google Patents
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- TW201334387A TW201334387A TW101104181A TW101104181A TW201334387A TW 201334387 A TW201334387 A TW 201334387A TW 101104181 A TW101104181 A TW 101104181A TW 101104181 A TW101104181 A TW 101104181A TW 201334387 A TW201334387 A TW 201334387A
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Abstract
Description
本發明係有關於一種直流/直流轉換電路，尤指一種同時具有順向式轉換電路和返馳式轉換電路的特性、轉換效率較高以及具有零電壓切換特性的直流/直流轉換電路。The present invention relates to a DC/DC conversion circuit, and more particularly to a DC/DC conversion circuit having characteristics of a forward conversion circuit and a flyback conversion circuit, high conversion efficiency, and zero voltage switching characteristics.
在先前技術中，直流/直流轉換電路主要有順向式轉換電路(forward transformer)和返馳式轉換電路(flyback transformer)。一般說來，因為順向式轉換電路係利用一次側線圈直接將輸入端的能量傳送至二次側線圈，所以順向式轉換電路的轉換效率較好。但是順向式轉換電路的缺點係為一次側線圈與二次側線圈的匝數比必須大於順向式轉換電路的升壓比。例如，順向式轉換電路的升壓比係為N時，順向式轉換電路的一次側線圈與二次側線圈的匝數比M必須大於N。In the prior art, the DC/DC conversion circuit mainly has a forward transformer and a flyback transformer. In general, since the forward conversion circuit directly transfers the energy of the input terminal to the secondary side coil by using the primary side coil, the conversion efficiency of the forward conversion circuit is better. However, the disadvantage of the forward conversion circuit is that the turns ratio of the primary side coil and the secondary side coil must be larger than the step ratio of the forward direction conversion circuit. For example, when the boost ratio of the forward conversion circuit is N, the turns ratio M of the primary side coil and the secondary side coil of the forward conversion circuit must be greater than N.
另一方面，返馳式轉換電路的一次側線圈與二次側線圈的匝數比可以小於返馳式轉換電路的升壓比。例如，返馳式轉換電路的升壓比係為N時，返馳式轉換電路的一次側線圈與二次側線圈的匝數比L可以小於N。但是返馳式轉換電路在傳遞輸入端的能量至二次側線圈時，輸入端的能量係先儲存在電感內，然後再傳至二次側線圈。因為電感損耗較大，所以返馳式轉換電路的缺點係為轉換效率較差。On the other hand, the turns ratio of the primary side coil and the secondary side coil of the flyback type conversion circuit may be smaller than the voltage step ratio of the flyback type conversion circuit. For example, when the boost ratio of the flyback conversion circuit is N, the turns ratio L of the primary side coil and the secondary side coil of the flyback type conversion circuit may be smaller than N. However, when the flyback conversion circuit transmits the energy of the input end to the secondary side coil, the energy of the input end is first stored in the inductor and then transmitted to the secondary side coil. Because of the large inductance loss, the disadvantage of the flyback conversion circuit is that the conversion efficiency is poor.
本發明的一實施例提供一種直流/直流轉換電路。該直流/直流轉換電路包含一變壓器、一開關、一第一電容、一第一二極體及一第二二極體。該變壓器包含一一次側線圈及一二次側線圈；該一次側線圈具有一第一端，用以接收一輸入電壓，及一第二端；該二次側線圈具有一第一端，及一第二端。該開關具有一第一端，耦接於該一次側線圈的第二端，一第二端，用以接收一開關控制訊號，及一第三端。該第一電容具有一第一端，耦接於該二次側線圈的第二端，及一第二端。該第一二極體具有一第一端，耦接於該二次側線圈的第一端，及一第二端，耦接於該第一電容的第二端。該第二二極體具有一第一端，用以耦接一負載，及一第二端，耦接於該第一二極體的第一端。當該開關導通時，該一次側線圈及該第一電容儲存一能量，當該開關關閉時，該一次側線圈及該第一電容釋放該能量至該負載。An embodiment of the invention provides a DC/DC conversion circuit. The DC/DC conversion circuit includes a transformer, a switch, a first capacitor, a first diode, and a second diode. The transformer includes a primary side coil and a secondary side coil; the primary side coil has a first end for receiving an input voltage, and a second end; the secondary side coil has a first end, and A second end. The switch has a first end coupled to the second end of the primary side coil, and a second end for receiving a switch control signal and a third end. The first capacitor has a first end coupled to the second end of the secondary side coil and a second end. The first diode has a first end coupled to the first end of the secondary coil, and a second end coupled to the second end of the first capacitor. The second diode has a first end for coupling to a load, and a second end coupled to the first end of the first diode. When the switch is turned on, the primary side coil and the first capacitor store an energy, and when the switch is turned off, the primary side coil and the first capacitor release the energy to the load.
本發明提供一種直流/直流轉換電路。相較於先前技術，該直流/直流轉換電路因為同時具有一順向式轉換電路和一返馳式轉換電路的特性，所以本發明具有下列優點：第一、當一開關導通時，因為流過一一次側線圈的電流具有對應於該順向式轉換電路的特性與對應於該返馳式轉換電路的特性，所以流過該一次側線圈的電流隨時間的變化小，導致該直流/直流轉換電路的轉換效率提高；第二、當該開關導通時，因為一輸入電壓的部分能量係儲存在該一次側線圈內的激磁電感，以及該輸入電壓的另一部分能量係儲存在一第一電容，所以該直流/直流轉換電路的能量損失較少；第三、因為本發明同時具有該順向式轉換電路的特性和該返馳式轉換電路的特性，所以本發明的匝數比該順向式轉換電路小，以及本發明的轉換效率比該返馳式轉換電路高；第四、因為本發明具有一箝位電路，所以當該開關根據一開關控制訊號關閉時，該開關具有一零電壓切換特性，導致該直流/直流轉換電路的轉換效率提高。The invention provides a DC/DC conversion circuit. Compared with the prior art, the DC/DC conversion circuit has the following advantages because it has the characteristics of a forward conversion circuit and a flyback conversion circuit. First, when a switch is turned on, because it flows through The current of the primary side coil has a characteristic corresponding to the forward conversion circuit and a characteristic corresponding to the flyback conversion circuit, so that the current flowing through the primary side coil changes little with time, resulting in the DC/DC. The conversion efficiency of the conversion circuit is improved. Second, when the switch is turned on, part of the energy of an input voltage is stored in the primary side coil, and another part of the input voltage is stored in a first capacitor. Therefore, the DC/DC conversion circuit has less energy loss; and third, because the present invention has both the characteristics of the forward conversion circuit and the characteristics of the flyback conversion circuit, the turns ratio of the present invention is higher than the forward direction The conversion circuit is small, and the conversion efficiency of the present invention is higher than the flyback conversion circuit; fourth, since the present invention has a clamp circuit, when the When the switch control signal according to a close, the switch has a zero-voltage switching characteristics, resulting in the DC / DC converter circuit conversion efficiency.
請參照第1圖，第1圖係為本發明的一實施例說明一種直流/直流轉換電路100的示意圖。如第1圖所示，直流/直流轉換電路100包含一變壓器102、一開關104、一第一電容106、一第一二極體108及一第二二極體110，其中變壓器102為了因應市場主流需求係為一隔離式變壓器，變壓器102包含一一次側線圈1022及一二次側線圈1024，以及一次側線圈1022及二次側線圈1024的匝數比係為1：N。一次側線圈1022具有一第一端，用以接收一輸入電壓VIN，及一第二端；二次側線圈1024具有一第一端，及一第二端。開關104具有一第一端，耦接於一次側線圈1022的第二端，一第二端，用以接收一開關控制訊號SCS，及一第三端，其中開關控制訊號SCS係為一脈衝寬度調變訊號。另外，開關控制訊號SCS的工作週期為D，且D係介於0和1之間。第一電容106具有一第一端，耦接於二次側線圈1024的第二端，及一第二端。第一二極體108具有一第一端，耦接於二次側線圈1024的第一端，及一第二端，耦接於第一電容106的第二端。第二二極體110具有一第一端，用以耦接一負載112，及一第二端，耦接於第一二極體108的第一端。Please refer to FIG. 1. FIG. 1 is a schematic diagram showing a DC/DC conversion circuit 100 according to an embodiment of the present invention. As shown in FIG. 1 , the DC/DC conversion circuit 100 includes a transformer 102 , a switch 104 , a first capacitor 106 , a first diode 108 , and a second diode 110 . The mainstream demand is an isolated transformer. The transformer 102 includes a primary side coil 1022 and a secondary side coil 1024, and the primary side coil 1022 and the secondary side coil 1024 have a turns ratio of 1:N. The primary side coil 1022 has a first end for receiving an input voltage VIN and a second end; the secondary side coil 1024 has a first end and a second end. The switch 104 has a first end coupled to the second end of the primary side coil 1022, a second end for receiving a switch control signal SCS, and a third end, wherein the switch control signal SCS is a pulse width Modulation signal. In addition, the duty cycle of the switch control signal SCS is D, and the D system is between 0 and 1. The first capacitor 106 has a first end coupled to the second end of the secondary side coil 1024 and a second end. The first diode 108 has a first end coupled to the first end of the secondary coil 1024 and a second end coupled to the second end of the first capacitor 106. The second diode 110 has a first end for coupling to a load 112 and a second end coupled to the first end of the first diode 108.
如第1圖所示，當開關104導通(ON)時，二次側線圈1024係為順向(forward)模式。因此，一電流IPF流過一次側線圈1022，以及一電流ISF0流過二次側線圈1024且對第一電容106充電，因此，輸入電壓VIN的能量係被儲存於一次側線圈1022內的激磁電感及第一電容106。As shown in Fig. 1, when the switch 104 is turned "ON", the secondary side coil 1024 is in a forward mode. Therefore, a current IPF flows through the primary side coil 1022, and a current ISF0 flows through the secondary side coil 1024 and charges the first capacitor 106. Therefore, the energy of the input voltage VIN is stored in the primary side coil 1022. And a first capacitor 106.
請參照第2圖，第2圖係為說明當開關104關閉(OFF)時的直流/直流轉換電路100的示意圖。如第2圖所示，當開關104關閉(OFF)時，二次側線圈1024係為返馳式(flyback)模式且流過一次側線圈1022的電流IPF降為零。因為一次側線圈1022與二次側線圈1024的極性相反，所以二次側線圈1024會因為二次側線圈1024內的磁通量變化，產生和電流ISF0反向的一電流ISF1，且二次側線圈1024可耦合一次側線圈1022內的激磁電感所儲存輸入電壓VIN的部分能量。因此，二次側線圈1024可將輸入電壓VIN的部分能量以及第一電容106可將所儲存輸入電壓VIN的另一部分能量，透過電流ISF1釋放至負載112，其中根據電流ISF1所產生的用以驅動負載112的輸出電壓VO可根據式(1)所產生。Please refer to FIG. 2, which is a schematic diagram illustrating the DC/DC conversion circuit 100 when the switch 104 is turned OFF. As shown in FIG. 2, when the switch 104 is turned off (OFF), the secondary side coil 1024 is in a flyback mode and the current IPF flowing through the primary side coil 1022 is reduced to zero. Since the polarity of the primary side coil 1022 and the secondary side coil 1024 are opposite, the secondary side coil 1024 generates a current ISF1 which is opposite to the current ISF0 due to a change in the magnetic flux in the secondary side coil 1024, and the secondary side coil 1024 A portion of the energy of the input voltage VIN stored by the magnetizing inductance in the primary side coil 1022 can be coupled. Therefore, the secondary side coil 1024 can discharge part of the energy of the input voltage VIN and the first capacitor 106 to release another portion of the stored input voltage VIN, through the current ISF1, to the load 112, wherein the current generated by the current ISF1 is used to drive The output voltage VO of the load 112 can be generated according to equation (1).
VIN*D=(VO-N*VIN)/N)*(1-D) (1)VIN*D=(VO-N*VIN)/N)*(1-D) (1)
由式(1)可知，如果開關控制訊號SCS之工作週期D、輸入電壓VIN以及一次側線圈1022與二次側線圈1024的匝數比被決定，則用以驅動負載112的輸出電壓VO亦可被決定。It can be seen from the formula (1) that if the duty cycle D of the switch control signal SCS, the input voltage VIN, and the turns ratio of the primary side coil 1022 and the secondary side coil 1024 are determined, the output voltage VO for driving the load 112 can also be was decided.
請參照第3圖，第3圖係為本發明的另一實施例說明一種直流/直流轉換電路300的示意圖。直流/直流轉換電路300和直流/直流轉換電路100的差別在於直流/直流轉換電路300另包含一箝位電路314，其中箝位電路314耦接於一次側線圈1022與開關104，用以當開關104關閉時，回收變壓器102的一次側線圈1022的能量。箝位電路314包含一第三二極體3142、一第二電容3144、一第四二極體3146及一電感3148。但本發明並不受限於第3圖的箝位電路314。第三二極體3142具有一第一端，耦接於一次側線圈1022的第一端，及一第二端；第二電容3144具有一第一端，耦接於第三二極體3142的第二端，及一第二端，耦接於開關104的第一端；第四二極體3146具有一第一端，耦接於第二電容3144的第一端，及一第二端；電感3148具有一第一端，耦接於第四二極體3146的第二端，及一第二端，耦接於開關104的第三端。Please refer to FIG. 3, which is a schematic diagram of a DC/DC conversion circuit 300 according to another embodiment of the present invention. The difference between the DC/DC conversion circuit 300 and the DC/DC conversion circuit 100 is that the DC/DC conversion circuit 300 further includes a clamp circuit 314, wherein the clamp circuit 314 is coupled to the primary side coil 1022 and the switch 104 for switching. When 104 is turned off, the energy of the primary side coil 1022 of the transformer 102 is recovered. The clamping circuit 314 includes a third diode 3142, a second capacitor 3144, a fourth diode 3146, and an inductor 3148. However, the present invention is not limited to the clamp circuit 314 of FIG. The third diode 3142 has a first end coupled to the first end of the primary side coil 1022 and a second end. The second capacitor 3144 has a first end coupled to the third diode 3142. The second end, and a second end, coupled to the first end of the switch 104; the fourth diode 3146 has a first end, coupled to the first end of the second capacitor 3144, and a second end; The inductor 3148 has a first end coupled to the second end of the fourth diode 3146 and a second end coupled to the third end of the switch 104.
如第3圖所示，當開關104根據開關控制訊號SCS開啟(ON)時，第二電容3144和電感3148產生一電感電容振盪，亦即第二電容3144、開關104、電感3148以及第四二極體3146形成一放電路徑。因此，在第二電容3144的放電過程中，第二電容3144的第二端的電位漸漸地由正電位(對應於前一次開關104關閉)轉為負電位，以及第二電容3144的第一端的電位漸漸地由負電位(對應於前一次開關104關閉)轉為正電位。As shown in FIG. 3, when the switch 104 is turned on according to the switch control signal SCS, the second capacitor 3144 and the inductor 3148 generate an inductance-capacitance oscillation, that is, the second capacitor 3144, the switch 104, the inductor 3148, and the fourth two. The pole body 3146 forms a discharge path. Therefore, during the discharge of the second capacitor 3144, the potential of the second end of the second capacitor 3144 gradually changes from a positive potential (corresponding to the previous switch 104 off) to a negative potential, and the first end of the second capacitor 3144 The potential is gradually turned to a positive potential by a negative potential (corresponding to the previous switch 104 being turned off).
請參照第4圖，第4圖係為說明當開關104關閉(OFF)時的箝位電路314的示意圖。如第4圖所示，當開關104根據開關控制訊號SCS關閉時，流經一次側線圈1022的電流同時對開關104的寄生電容及第二電容3144充電，升高第二電容3144的第二端的電位(此時，第二電容3144的第二端的電位係為負電位)，導致第二電容3144的第一端的電位(此時，第二電容3144的第一端的電位係為正電位)亦被升高。因此，當第二電容3144的第一端的電位升高到足以導通第三二極體3142時，儲存於開關104的寄生電容的能量，即可透過第二電容3144及第三二極體3142傳送至輸入電壓VIN。然後，第二電容3144的第二端的電位漸漸地由負電位轉為正電位，以及第二電容3144的第一端的電位漸漸地由正電位轉為負電位。因為當開關104根據開關控制訊號SCS關閉時，流經一次側線圈1022的電流同時對開關104的寄生電容及第二電容3144充電，所以開關104的跨壓不會瞬間變化劇烈。請參照第5圖，第5圖係為說明當開關104根據開關控制訊號SCS關閉時，箝位電路314讓開關104具有零電壓切換特性的示意圖。如第5圖所示，當開關104根據開關控制訊號SCS關閉時，因為箝位電路314回收一次側線圈1022的漏感能量至輸入電壓VIN，所以開關104的跨壓VDS變化比較平緩，亦即當開關104根據開關控制訊號SCS關閉時，開關104具有零電壓切換特性，導致直流/直流轉換電路300的轉換效率提高。Please refer to FIG. 4, which is a schematic diagram illustrating the clamp circuit 314 when the switch 104 is turned OFF. As shown in FIG. 4, when the switch 104 is turned off according to the switch control signal SCS, the current flowing through the primary side coil 1022 simultaneously charges the parasitic capacitance of the switch 104 and the second capacitor 3144, raising the second end of the second capacitor 3144. The potential (at this time, the potential of the second end of the second capacitor 3144 is a negative potential) causes a potential of the first end of the second capacitor 3144 (at this time, the potential of the first end of the second capacitor 3144 is a positive potential) Also raised. Therefore, when the potential of the first end of the second capacitor 3144 is raised enough to turn on the third diode 3142, the energy of the parasitic capacitance stored in the switch 104 can pass through the second capacitor 3144 and the third diode 3142. Transfer to input voltage VIN. Then, the potential of the second end of the second capacitor 3144 gradually changes from a negative potential to a positive potential, and the potential of the first end of the second capacitor 3144 gradually changes from a positive potential to a negative potential. Because the current flowing through the primary side coil 1022 simultaneously charges the parasitic capacitance of the switch 104 and the second capacitance 3144 when the switch 104 is turned off according to the switch control signal SCS, the voltage across the switch 104 does not change instantaneously. Referring to FIG. 5, FIG. 5 is a schematic diagram illustrating that the clamp circuit 314 causes the switch 104 to have a zero voltage switching characteristic when the switch 104 is turned off according to the switch control signal SCS. As shown in FIG. 5, when the switch 104 is turned off according to the switch control signal SCS, since the clamp circuit 314 recovers the leakage inductance energy of the primary side coil 1022 to the input voltage VIN, the voltage across the VDS of the switch 104 changes relatively gently, that is, When the switch 104 is turned off according to the switch control signal SCS, the switch 104 has a zero voltage switching characteristic, resulting in an increase in the conversion efficiency of the DC/DC conversion circuit 300.
綜上所述，相較於先前技術，本發明所提供的直流/直流轉換電路因為同時具有順向式轉換電路和返馳式轉換電路的特性，所以本發明具有下列優點：第一、當開關導通時，因為流過一次側線圈的電流同時具有對應於順向式轉換特性的電流與對應於返馳式轉換特性的電流，所以流過一次側線圈的電流隨時間的變化小，導致直流/直流轉換電路的轉換效率提高；第二、當開關導通時，因為輸入電壓的部分能量係儲存在一次側線圈內的激磁電感，以及輸入電壓的另一部分能量係儲存在第一電容，所以直流/直流轉換電路的能量損失較少；第三、因為本發明同時具有順向式轉換電路和返馳式轉換電路的特性，所以本發明的匝數比順向式轉換電路小，以及本發明的轉換效率比返馳式轉換電路高；第四、因為本發明具有箝位電路，所以當開關根據開關控制訊號關閉時，開關具有零電壓切換特性，導致直流/直流轉換電路的轉換效率提高。In summary, compared with the prior art, the DC/DC conversion circuit provided by the present invention has the following advantages because of the characteristics of both the forward conversion circuit and the flyback conversion circuit: First, when the switch At the time of conduction, since the current flowing through the primary side coil has a current corresponding to the forward conversion characteristic and a current corresponding to the flyback conversion characteristic, the current flowing through the primary side coil changes little with time, resulting in DC/ The conversion efficiency of the DC conversion circuit is improved. Second, when the switch is turned on, since part of the energy of the input voltage is stored in the primary side coil, and another part of the input voltage is stored in the first capacitor, DC/ The DC conversion circuit has less energy loss; and third, since the present invention has the characteristics of both the forward conversion circuit and the flyback conversion circuit, the turns ratio of the present invention is smaller than that of the forward conversion circuit, and the conversion of the present invention The efficiency is higher than the flyback conversion circuit; fourth, because the invention has a clamp circuit, when the switch is controlled according to the switch control signal , The switch has a zero-voltage switching, resulting in DC / DC converter circuit conversion efficiency.
以上所述僅為本發明之較佳實施例，凡依本發明申請專利範圍所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.
100、300．．．直流/直流轉換電路100, 300. . . DC/DC conversion circuit
102．．．變壓器102. . . transformer
104．．．開關104. . . switch
106．．．第一電容106. . . First capacitor
108．．．第一二極體108. . . First diode
110．．．第二二極體110. . . Second diode
112．．．負載112. . . load
314．．．箝位電路314. . . Clamp circuit
1022．．．一次側線圈1022. . . Primary side coil
1024．．．二次側線圈1024. . . Secondary side coil
3142．．．第三二極體3142. . . Third diode
3144．．．第二電容3144. . . Second capacitor
3146．．．第四二極體3146. . . Fourth diode
3148．．．電感3148. . . inductance
ISF0、IPF、ISF1．．．電流ISF0, IPF, ISF1. . . Current
SCS．．．開關控制訊號SCS. . . Switch control signal
VIN．．．輸入電壓VIN. . . Input voltage
VDS．．．跨壓VDS. . . Cross pressure
VO．．．輸出電壓VO. . . The output voltage
第1圖係為本發明的一實施例說明一種直流/直流轉換電路的示意圖。Fig. 1 is a schematic view showing a DC/DC conversion circuit according to an embodiment of the present invention.
第2圖係為說明當開關關閉時的直流/直流轉換電路的示意圖。Figure 2 is a schematic diagram showing the DC/DC conversion circuit when the switch is off.
第3圖係為本發明的另一實施例說明一種直流/直流轉換電路的示意圖。Figure 3 is a schematic diagram showing a DC/DC conversion circuit according to another embodiment of the present invention.
第4圖係為說明當開關關閉時的箝位電路的示意圖。Figure 4 is a schematic diagram illustrating the clamp circuit when the switch is off.
第5圖係為說明當開關根據開關控制訊號關閉時，箝位電路讓開關具有零電壓切換特性的示意圖。Figure 5 is a diagram illustrating the clamp circuit having a zero voltage switching characteristic when the switch is turned off according to the switch control signal.
300．．．直流/直流轉換電路300. . . DC/DC conversion circuit
102．．．變壓器102. . . transformer
104．．．開關104. . . switch
106．．．第一電容106. . . First capacitor
108．．．第一二極體108. . . First diode
110．．．第二二極體110. . . Second diode
112．．．負載112. . . load
314．．．箝位電路314. . . Clamp circuit
1022．．．一次側線圈1022. . . Primary side coil
1024．．．二次側線圈1024. . . Secondary side coil
3142．．．第三二極體3142. . . Third diode
3144．．．第二電容3144. . . Second capacitor
3146．．．第四二極體3146. . . Fourth diode
3148．．．電感3148. . . inductance
SCS．．．開關控制訊號SCS. . . Switch control signal
VIN．．．輸入電壓VIN. . . Input voltage
VO．．．輸出電壓VO. . . The output voltage
Claims (6)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101104181A TW201334387A (en) | 2012-02-09 | 2012-02-09 | Direct current/direct current converter |
| CN2012100538053A CN102624235A (en) | 2012-02-09 | 2012-03-02 | DC (Direct Current)/DC conversion circuit |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101104181A TW201334387A (en) | 2012-02-09 | 2012-02-09 | Direct current/direct current converter |
| CN2012100538053A CN102624235A (en) | 2012-02-09 | 2012-03-02 | DC (Direct Current)/DC conversion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW201334387A true TW201334387A (en) | 2013-08-16 |
Family
ID=55079901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW101104181A TW201334387A (en) | 2012-02-09 | 2012-02-09 | Direct current/direct current converter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102624235A (en) |
| TW (1) | TW201334387A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI495239B (en) * | 2013-11-01 | 2015-08-01 | Univ Nat Taipei Technology | Voltage converter combined with one bootstrap capacitor and one coupled inductor |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104717784B (en) * | 2013-12-13 | 2018-09-14 | 台达电子企业管理（上海）有限公司 | Light source driving circuit |
| US11764689B2 (en) | 2019-02-01 | 2023-09-19 | Chicony Power Technology Co., Ltd. | Flyback power-converting device with zero-voltage switching and method for flyback converting power with zero-voltage switching |
| TWI731675B (en) * | 2020-05-11 | 2021-06-21 | 宏碁股份有限公司 | Power supply device for eliminating ringing effect |
| CN113938014B (en) * | 2020-07-13 | 2023-07-21 | 宏碁股份有限公司 | Power supply device for eliminating ringing effect |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100511942C (en) * | 2003-11-19 | 2009-07-08 | 南京航空航天大学 | Method for controlling positive and negative excitation bidirectional DC-DC converter |
| KR100808462B1 (en) * | 2004-01-29 | 2008-03-07 | 포스데이타 주식회사 | Methods and apparatus for multi-carrier, multi-cell wireless communication networks |
| CN2917083Y (en) * | 2005-11-04 | 2007-06-27 | 周春香 | Normal/reverse excitation combined DC/DC isolated transformer |
| CN201854188U (en) * | 2010-11-23 | 2011-06-01 | 中国电子科技集团公司第三十八研究所 | Simple and efficient DC/DC positive and negative forward converter |
-
2012
- 2012-02-09 TW TW101104181A patent/TW201334387A/en unknown
- 2012-03-02 CN CN2012100538053A patent/CN102624235A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI495239B (en) * | 2013-11-01 | 2015-08-01 | Univ Nat Taipei Technology | Voltage converter combined with one bootstrap capacitor and one coupled inductor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102624235A (en) | 2012-08-01 |
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