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Dongguan Jiuqi Industrial Co., Ltd.
Contact: Mr.liang
Mobile: +86-13122876672
Tel: 0769-81818179
Fax: 0769-81806179
Address: Kongwu District, Guxia, Shipai town, Dongguan city
Postal Code: 523339
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E-mail:haulwee@vip.163.com
Power adapter transformer
| Power adapter transformer |
| Step-down transformer Buck transformer, also known as Buck transformer, is a transformer that converts a high voltage at the input end into a relatively low ideal voltage at the output end so as to achieve the purpose of Buck transformer. Its characteristic is the output voltage is lower than the input voltage, it has the effect of reducing the voltage. Booster transformer Step-up transformer refers to the instantaneous start of voltage. At present, there are few transformer manufacturers in China who can effectively achieve instantaneous start up. Booster transformer is characterized by a higher output voltage than the input voltage. Step-down/step-up transformer Buck/ Boost transformers are also known as Buck/ Boost power transformers. Its characteristic is that when the input voltage is higher than the output voltage, the transformer works in the step-down type, and when the input voltage is lower than the output voltage, the transformer works in the step-up type. Step-up transformer and step-down transformer in the structure of the difference is: wire diameter is not the same. The transformer can only change the voltage, not improve the power, that is, the original side and side are voltage and current product. Therefore, the booster transformer original side line diameter thick, small side line diameter. The step-down transformer original side line diameter fine, secondary side line diameter thick. Charge pump transformer The charge pump, also known as a switched capacitor voltage Converter, is a type of DC-DC Converter that USES so-called "fast" or "pumping" capacitors, rather than inductors or transformers, to store energy. It is characterized by the polarity of the output voltage is opposite to the input voltage, and the amplitude of the output negative voltage can be higher than the input voltage, or lower than or equal to the input voltage. It can therefore be included as a step-down/step-up transformer. Single-end primary side inductive transformer Single ended primary side inductance transformer SEPIC transformer, for short circuit used in the two inductors L1 and L2, L1 and power switch tube Ⅴ have the effect of step-up transformer, and L2 and rectifier Ⅴ D have the effect of the flyback type buck/boost type. It belongs to the "boost ten buck/boost type" transformer, the output voltage can be higher than the input voltage, also can be lower than the input voltage, very flexible use. Flyback transformer Flyback transformers are also known as single-ended Flyback transformers or "buck-boost" transformers. It gets its name from the fact that its output ends gain energy when the primary winding is disconnected from the power supply. Flyback converter with its simple circuit structure, low cost and the majority of development engineers love. The characteristic is that the energy output to the load is only during the cut-off period of the power switch. Positive type transformer When the power switch tube is on, in addition to supplying power to the load, a part of electric energy is stored in L and C. When the power switch is turned off, the electrical energy stored in L supplies power to the load, keeping the output voltage constant. Double switch positive type transformer Double switch forward type transformer needs two MOSFET(V1, V2) as switching devices to conduct or turn off at the same time under the control of PWM signal. Half-bridge transformer Half-bridge transformer is composed of two power switch tube half-bridge, suitable for high-power power adapter. The operating principle of the half-bridge transformer power adapter is very similar to that of the push-pull transformer power adapter, except that the excitation mode of the transformer is slightly different from the access mode of the working power supply Full bridge transformer Full bridge transformer needs to use 4 power switch tubes to form full bridge, which is suitable for the construction of high power power adapter. Full bridge transformer power adapter, as with push-pull transformer power adapter, is equivalent to the output power of two power adapters at the same time due to the alternating operation of two sets of switches. The output power is approximately twice the output power of a single power adapter. Push-pull transformer Push-pull transformers use two alternating power switches to complete the power conversion. The rectifying output push-pull transformer power adapter, as the two switching tubes work alternately, is equivalent to the simultaneous output power of two power adapters, and the output power is approximately twice the output power of a single power adapter. The two switches of a push-pull power adapter have a common ground terminal, and the drive circuit is much simpler than that of a half-bridge or full-bridge power adapter. Half-bridge LLC resonant transformer A half-bridge LLC resonant transformer consists of a half-bridge, two resonant inductors and one resonant capacitor. It is a kind of frequency conversion converter, whose voltage stabilizing principle is that when the output voltage rises, the output voltage tends to be stable by reducing the working frequency and voltage gain. Resonant type transformer is an electronic product of industrial supplies. The utility model provides a transformer for resonant type asymmetric half-bridge switch converter, including a transformer skeleton. |
| | release time：2019.09.10 Source： |
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Contact: Mr.liangTel:+86-13122876672Tel:0769-81818179Fax:0769-81806179 E-mail:haulwee@vip.163.com
Address: Kongwu District, Guxia, Shipai town, Dongguan city, China Zipcose:523,339
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