开关电源设计------外文翻译.doc
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开关电源设计------外文翻译,switching power supply work in high frequency, high pulse state, are analog circuits in a rather special kind. cloth boards to follow the principle of high-freq...
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Switching power supply work in high frequency, high pulse state, are analog circuits in a rather special kind. Cloth boards to follow the principle of high-frequency circuit wiring.
1, layout:
Pulse voltage connection as short as possible, including input switch connected to the transformer, output transformer to the rectifier tube cable. Pulse current loop as small as possible such as the input filter capacitor is returned to the transformer to the switch capacitor negative. Some out-ended output transformers are the output rectifier to the output capacitor back to transformer circuit X capacitor as close as possible to the input switching power supply, input lines should be avoided in parallel with other circuits, should be avoided. Y capacitor should be placed in the chassis ground terminal or FG connectors. A total of touch induction and transformer to maintain a certain distance in order to avoid magnetic coupling. Such as poor handling of feeling in between inductor and transformer plus a shield, over a number of EMC performance for power supply to the greater impact.
General the output capacitor can be used the other two a close rectifier output terminal should be close to, can affect the power supply output ripple index, two small capacitor in parallel results should be better than using a large capacitor. Heating devices to maintain a certain distance, and electrolytic capacitors to extend machine life, electrolytic capacitors is the switching power supply bottleneck life, such as transformers, power control, high power resistors and electrolytic to maintain the distance required between the electrolyte leaving space for heat dissipation , conditions permitting, may be placed in the inlet.
Control part to pay attention to: Weak signal high impedance circuit connected to sample the feedback loop as short as in the processing as far as possible avoid interference, the current sampling signal circuits, in particular the current control circuit, easy to deal with some unexpected bad The accident, which had some skill, now to 3843 the circuit example shown in Figure (1) Figure 1 better than Yu Figure 2, Figure 2 Zai full time by observing the current waveform oscilloscope Mingxian superimposed spikes, Youyuganrao limited flow ratio design Zhi Dian low, Figure 1 there is no such phenomenon, there are switch drive signal circuit, switch resistance should be close to the switch driver can switch the work to improve the reliability of this and the high DC impedance voltage power MOSFET driver characteristics.
开关电源状态，电源工作在高频率，高脉冲的模拟电路的一个比较特殊的一种。布板布线原则遵循高频电路。
1，布局：
脉冲电压连接尽可能短，包括输入开关连接到变压器，输出变压器的整流管电缆。脉冲电流回路尽可能小，如输入滤波电容的负返回变压器开关电容器。一些外端输出变压器是输出整流器的输出电容回变压器电路X关闭电容器尽可能输入开关电源，输入线应避免与其他电路中平行，应该避免。Y电容应放置在机箱的接地端子或fg连接器。一个变压器总的触摸感应，并保持一定的距离，以避免磁耦合。如处理不当影响较大的感觉电感器和变压器之间加一屏蔽，过一个数字的EMC性能的电源。
总的输出电容可以使用的其他两个紧密整流器输出端应接近，可能会影响电源的输出纹波指标，结果两个小电容并联电容器应该比使用大。暖气设备要保持一定的距离，电解电容，延长机器寿命，铝电解电容器是开关电源的瓶颈生活热，如变压器，电源控制，高功率电阻器和电解空间的距离为维持电解质之间需要离开耗散，条件允许的话，可能被放置在入口。
控制部分要注意：高阻抗电路连接到样品的反馈回路短弱信号处理中尽量避免干扰，电流采样信号的电路，特别是电流控制电路，容易处理一些意想不到坏的事故，其中有一些技巧，现在3843的电路示例如图（1）图1 2比于图，图2再叠加尖峰全职通过观察电流波形示波器暹，Youyuganrao有限的流量比设计志滇低，图1有没有这样的现象，有开关驱动信号的电路，开关电阻应接近开关驱动器可以切换工作，提高可靠性的特点，这和高直流阻抗电压功率MOSFET驱动器。
二，路径
对准电流密度：现在大部分的铜电子绝缘电路板使用构成并列。常见的PCB铜层厚度35μm，对齐值可1A/mm经验，按照目前的密度值，具体计算可以发现教科书。为了确保机械强度的对齐原则应大于或等于0.3毫米宽（其他非电源电路板可能会更小的最小线条宽度）。PCB的厚度为70μm铜也是常见的开关电源供应，则电流密度可以更高。
补充一点，现在长永电路板设计工具设计软件性参数，一般的项目，如线宽，线间距，孔大小等干板过几嗯可以设置。在电路板的设计，软件设计规格自动根据，可以节省时间，减少工作量，减少一些错误率。
一般布线的密度更高的可靠性线或行可用于双面板。其特点是价格适中，可靠性高，能满足大多数应用。
1, layout:
Pulse voltage connection as short as possible, including input switch connected to the transformer, output transformer to the rectifier tube cable. Pulse current loop as small as possible such as the input filter capacitor is returned to the transformer to the switch capacitor negative. Some out-ended output transformers are the output rectifier to the output capacitor back to transformer circuit X capacitor as close as possible to the input switching power supply, input lines should be avoided in parallel with other circuits, should be avoided. Y capacitor should be placed in the chassis ground terminal or FG connectors. A total of touch induction and transformer to maintain a certain distance in order to avoid magnetic coupling. Such as poor handling of feeling in between inductor and transformer plus a shield, over a number of EMC performance for power supply to the greater impact.
General the output capacitor can be used the other two a close rectifier output terminal should be close to, can affect the power supply output ripple index, two small capacitor in parallel results should be better than using a large capacitor. Heating devices to maintain a certain distance, and electrolytic capacitors to extend machine life, electrolytic capacitors is the switching power supply bottleneck life, such as transformers, power control, high power resistors and electrolytic to maintain the distance required between the electrolyte leaving space for heat dissipation , conditions permitting, may be placed in the inlet.
Control part to pay attention to: Weak signal high impedance circuit connected to sample the feedback loop as short as in the processing as far as possible avoid interference, the current sampling signal circuits, in particular the current control circuit, easy to deal with some unexpected bad The accident, which had some skill, now to 3843 the circuit example shown in Figure (1) Figure 1 better than Yu Figure 2, Figure 2 Zai full time by observing the current waveform oscilloscope Mingxian superimposed spikes, Youyuganrao limited flow ratio design Zhi Dian low, Figure 1 there is no such phenomenon, there are switch drive signal circuit, switch resistance should be close to the switch driver can switch the work to improve the reliability of this and the high DC impedance voltage power MOSFET driver characteristics.
开关电源状态，电源工作在高频率，高脉冲的模拟电路的一个比较特殊的一种。布板布线原则遵循高频电路。
1，布局：
脉冲电压连接尽可能短，包括输入开关连接到变压器，输出变压器的整流管电缆。脉冲电流回路尽可能小，如输入滤波电容的负返回变压器开关电容器。一些外端输出变压器是输出整流器的输出电容回变压器电路X关闭电容器尽可能输入开关电源，输入线应避免与其他电路中平行，应该避免。Y电容应放置在机箱的接地端子或fg连接器。一个变压器总的触摸感应，并保持一定的距离，以避免磁耦合。如处理不当影响较大的感觉电感器和变压器之间加一屏蔽，过一个数字的EMC性能的电源。
总的输出电容可以使用的其他两个紧密整流器输出端应接近，可能会影响电源的输出纹波指标，结果两个小电容并联电容器应该比使用大。暖气设备要保持一定的距离，电解电容，延长机器寿命，铝电解电容器是开关电源的瓶颈生活热，如变压器，电源控制，高功率电阻器和电解空间的距离为维持电解质之间需要离开耗散，条件允许的话，可能被放置在入口。
控制部分要注意：高阻抗电路连接到样品的反馈回路短弱信号处理中尽量避免干扰，电流采样信号的电路，特别是电流控制电路，容易处理一些意想不到坏的事故，其中有一些技巧，现在3843的电路示例如图（1）图1 2比于图，图2再叠加尖峰全职通过观察电流波形示波器暹，Youyuganrao有限的流量比设计志滇低，图1有没有这样的现象，有开关驱动信号的电路，开关电阻应接近开关驱动器可以切换工作，提高可靠性的特点，这和高直流阻抗电压功率MOSFET驱动器。
二，路径
对准电流密度：现在大部分的铜电子绝缘电路板使用构成并列。常见的PCB铜层厚度35μm，对齐值可1A/mm经验，按照目前的密度值，具体计算可以发现教科书。为了确保机械强度的对齐原则应大于或等于0.3毫米宽（其他非电源电路板可能会更小的最小线条宽度）。PCB的厚度为70μm铜也是常见的开关电源供应，则电流密度可以更高。
补充一点，现在长永电路板设计工具设计软件性参数，一般的项目，如线宽，线间距，孔大小等干板过几嗯可以设置。在电路板的设计，软件设计规格自动根据，可以节省时间，减少工作量，减少一些错误率。
一般布线的密度更高的可靠性线或行可用于双面板。其特点是价格适中，可靠性高，能满足大多数应用。
