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    • 2. 发明申请
    • ULTRALOW NO-LOAD CONDUCTION LOSS DC POWER CONVERTER
    • 超负荷导通损失直流电源转换器
    • US20120236605A1
    • 2012-09-20
    • US13104783
    • 2011-05-10
    • Lien-Hsing ChenLi-Hao Jiu
    • Lien-Hsing ChenLi-Hao Jiu
    • H02M3/335
    • H02M3/33592H02M2001/0032Y02B70/1475Y02B70/16
    • An ultralow no-load conduction loss DC converter includes a DC power source, a transformer having a first winding, a first MOSET and a PWM controller at the primary side and a second winding, a third winding, a drive control unit, a rectifier unit and a second MOSFET at the secondary side. The second MOSFET, the drive control unit and the rectifier unit constitutes a combination circuit electrically coupled between one end of the second winding and one end of the third winding. The second MOSFET has set therein a body diode. The second winding and the second MOSFET forms a combination circuit electrically connected to a load. Thus, the decision to turn off the drive control unit is made at the secondary side so that non-load conduction loss can be minimized.
    • 超低空导通损耗DC转换器包括直流电源,具有第一绕组的变压器,初级侧的第一MOSET和PWM控制器以及第二绕组,第三绕组,驱动控制单元,整流单元 和次级侧的第二MOSFET。 第二MOSFET,驱动控制单元和整流器单元构成电耦合在第二绕组的一端和第三绕组的一端之间的组合电路。 第二个MOSFET在其中设置了体二极管。 第二绕组和第二MOSFET形成电连接到负载的组合电路。 因此,在二次侧进行关闭驱动控制单元的决定,从而可以使非负载传导损耗最小化。
    • 3. 发明申请
    • POWER CONVERTER HAVING HIGH EFFICIENCY AT LOW LOAD
    • 功率转换器在低负载下具有高效率
    • US20120236603A1
    • 2012-09-20
    • US13104803
    • 2011-05-10
    • Lien-Hsing CHENLi-Hao LIU
    • Lien-Hsing CHENLi-Hao LIU
    • H02M3/335
    • H02M3/33592H02M2001/0032Y02B70/1475Y02B70/16
    • A power converter includes a DC power source, a transformer having a first winding, a first MOSET and a PWM controller at the primary side and a second winding, a drive control unit, a current detection control unit, a comparator and a second MOSFET at the secondary side. The comparator has its input end electrically connected to the current detection control unit and its output end electrically connected to the drive control unit, which is electrically connected to the second MOSFET for synchronous rectification. The second MOSFET is electrically connected to one end of the second winding, having a body diode built therein. The second winding and the second MOSFET constitute a combination circuit electrically connected to a load that has a capacitor electrically connected thereto in a parallel manner. By means of the aforesaid arrangement, conduction loss at a low load is minimized, thereby improving the efficiency at a low load.
    • 电力转换器包括直流电源,具有第一绕组的变压器,初级侧的第一MOSET和PWM控制器以及第二绕组,驱动控制单元,电流检测控制单元,比较器和第二MOSFET, 二次侧。 比较器的输入端电连接到电流检测控制单元,其输出端电连接到驱动控制单元,驱动控制单元电连接到用于同步整流的第二MOSFET。 第二MOSFET电连接到第二绕组的一端,其中内置有体二极管。 第二绕组和第二MOSFET构成电连接到具有与之并联的电容器的负载的组合电路。 通过上述布置,低负载下的导通损耗最小化,从而提高了低负载时的效率。
    • 5. 发明申请
    • POWER CONVERTER CAPABLE OF LOWERING POWER WASTAGE ON STANDBY
    • 功率转换器可以在STANDBY上降低功率浪费
    • US20110044075A1
    • 2011-02-24
    • US12588183
    • 2009-10-07
    • Lien-Hsing ChenLi-Hao Liu
    • Lien-Hsing ChenLi-Hao Liu
    • H02M3/335
    • H02M3/33592Y02B70/1475
    • A power converter includes at least one electric control switch, an electric current detecting and converting unit, a power controller, and a voltage detecting and controlling unit at the primary side; and a synchronous rectifying circuit, two MOSFETs, and an oscillating loop. During the actual operation, electric current detecting and converting unit outputs an AC voltage signal to the power controller and outputs a DC voltage signal to the voltage detecting and controlling unit, and then voltage detecting and controlling unit compares with a reference voltage to turn off the synchronous rectifying circuit at the no-load mode and to rectify via a body diodes of the MOSFETs. Accordingly, the power converter can reduce the power wastage at the no-load mode to be energy-saving.
    • 功率转换器包括至少一个电气控制开关,电流检测和转换单元,功率控制器和初级侧的电压检测和控制单元; 和同步整流电路,两个MOSFET和一个振荡环路。 在实际操作中,电流检测和转换单元向功率控制器输出交流电压信号,并向电压检测和控制单元输出直流电压信号,然后电压检测和控制单元与参考电压进行比较,以关断 同步整流电路,并通过MOSFET的体二极管进行整流。 因此,功率转换器可以将空载时的功率损耗降低到节能。
    • 6. 发明授权
    • High efficiency flyback converter with primary, secondary, and tertiary windings
    • 具有初级,次级和三级绕组的高效率回扫转换器
    • US07233505B2
    • 2007-06-19
    • US10846685
    • 2004-05-17
    • Lien-Hsing ChenLien-Chien Ke
    • Lien-Hsing ChenLien-Chien Ke
    • H02M3/335
    • H02M3/33592Y02B70/1475
    • A flyback converter is comprised of a primary side and a secondary side. The primary side includes a primary winding and a switch both connected in series. The secondary side includes a secondary winding, a tertiary winding, a first resistor, a capacitor, a second resistor, and an MOSFET (metal-oxide-semiconductor field-effect transistor). The first resistor, the capacitor, and the second resistor are connected in series and together connected in parallel with the tertiary winding. The MOSFET is connected in parallel with the first resistor at its gate and source. Accordingly, when the switch is turned on/off, the power energy provided at the primary side can be transferred to the secondary side in a flyback manner.
    • 反激转换器由初级侧和次级侧构成。 初级侧包括串联连接的初级绕组和开关。 次级侧包括次级绕组,三次绕组,第一电阻器,电容器,第二电阻器和MOSFET(金属氧化物半导体场效应晶体管)。 第一电阻器,电容器和第二电阻器串联连接并且与三次绕组并联连接。 MOSFET的栅极和源极与第一个电阻并联连接。 因此,当开关打开/关闭时,设置在初级侧的动力能量可以以回扫方式传递到次级侧。
    • 7. 发明授权
    • Ultralow no-load conduction loss DC power converter
    • 超低空导通损耗直流电源转换器
    • US08817495B2
    • 2014-08-26
    • US13104783
    • 2011-05-10
    • Lien-Hsing ChenLi-Hao Liu
    • Lien-Hsing ChenLi-Hao Liu
    • H02M3/335H02M1/00
    • H02M3/33592H02M2001/0032Y02B70/1475Y02B70/16
    • An ultralow no-load conduction loss DC converter includes a DC power source, a transformer having a first winding, a first MOSET and a PWM controller at the primary side and a second winding, a third winding, a drive control unit, a rectifier unit and a second MOSFET at the secondary side. The second MOSFET, the drive control unit and the rectifier unit constitutes a combination circuit electrically coupled between one end of the second winding and one end of the third winding. The second MOSFET has set therein a body diode. The second winding and the second MOSFET forms a combination circuit electrically connected to a load. Thus, the decision to turn off the drive control unit is made at the secondary side so that non-load conduction loss can be minimized.
    • 超低空导通损耗DC转换器包括直流电源,具有第一绕组的变压器,初级侧的第一MOSET和PWM控制器以及第二绕组,第三绕组,驱动控制单元,整流单元 和次级侧的第二MOSFET。 第二MOSFET,驱动控制单元和整流器单元构成电耦合在第二绕组的一端和第三绕组的一端之间的组合电路。 第二个MOSFET在其中设置了体二极管。 第二绕组和第二MOSFET形成电连接到负载的组合电路。 因此,在二次侧进行关闭驱动控制单元的决定,从而可以使非负载传导损耗最小化。