产品详情资料
系数1.2说明了典型的电感器公差和随温度的变化。ISET引脚打开时,此小电感值约等于VIN(MAX)•1µH/V。尽管前面的等式提供了小电感器值,但通常使用较大的电感器来实现较高的效率,这产生了较低的开关频率。作为峰值电流函数的小型表面安装电感器的推荐电感器值范围如图3所示。对于电路板面积不是限制因素的应用,可以使用具有更大磁芯的电感器,这将图3的建议范围扩大到更大的值。对于具有大输入电源瞬变的应用,OVLO引脚可用于禁用高于大工作电压VIN(MAX)的开关,以便小电感器值不受瞬变条件的人为限制。违反上述方程的电感器值将导致峰值电流过冲,并可能对零件造成性损坏。电感器磁芯选择一旦L值已知,必须选择电感器的类型。高效调压器通常无法承受低成本粉末铁芯中的铁芯损耗,迫使使用更昂贵的铁氧体铁芯。实际堆芯损失为factor of 1.2 accounts for typical inductor tolerance and variation over temperature. With the ISET pin open, this minimum inductor value is approximately equal to VIN(MAX) • 1µH/V. Although the previous equation provides a minimum inductor value, higher efficiency is typically achieved with a larger inductor value, which produces a lower switching frequency. The recommended range of inductor values for small surface mount inductors as a function of peak current is shown in Figure 3. For applications where board area is not a limiting factor, inductors with larger cores can be used, which extends the recommended range of Figure 3 to larger values. For applications that have large input supply transients, the OVLO pin can be used to disable switching above the maximum operating voltage VIN(MAX) so that the minimum inductor value is not artificially limited by a transient condition. Inductor values that violate the above equation will cause the peak current to overshoot and permanent damage to the part may occur. Inductor Core Selection Once the value for L is known, the type of inductor must be selected. High efficiency regulators generally cannot afford the core loss found in low cost powdered iron cores, forcing the use of the more expensive ferrite cores. Actual core loss is e peak current, and the
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主营产品简介
专注于DCS、PLC、机器人控制系统、大型伺服四大系统领域。
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●使用前:
在操作和维护,安装设备之前,请阅读并严格遵守安全相关的信息。
Read and strictly follow safety-related information before operatingmaintainingand installing equipment.
●使用者要求:
必须从事安装,组装或维护设备等相关工控电气机械以及其他相关技术的人员。
Must be engaged in the installation,assembly or maintenance of equipment and other related industriacontroeectrica machinery and other related technica personne.应用范围:
应用于品牌本系列工业以及生产生活自动化设备产品。
Used in the brand of this series of industriaand production automation eauipment products
适用于场景:系统集成,非标定制,产线升级改造,原设备电气替换等等。
Suitable for scenarios:system integration,non-standard customizationproduction line upgrading and transformation,electrical replacement of original equipment,etc.
●操作人员:
应该由本品牌专业培训操作员来安装、操作和维修设备。专业人员具有技术能力强,熟悉安全信息和安全实施:
熟悉设备的安装加工、操作和维护:熟悉处理所有的潜在危险情况。
Equipment should be installed,operated and maintained by trained operators from the brand
●危险情况
警告
.请注意使用人员的人身安全。
●除了产品特性以及功能,还需了解产品的使用寿命环境。
●充分学习产品使用手册,否则非专业人员可能会造成人身危险。
Study the product instruction manual thoroughlyotherwise it may cause personal danger to non-professionals.
●服务行业
适用水泥,木业,石业,橡胶,石油,化工,发电,环保,水处理,制冷,交通,钢铁,食品,饮料,船舶,制冷等行业
Applicable to cementwood,stone,rubber,petroleumchemical, power generation,
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