产品详情资料
显著的偏差不会带来太大的缓解。注意,电容器制造商的纹波电流额定值通常仅基于2000小时的使用寿命,因此建议进一步降低电容器的额定值,或选择额定温度高于要求的电容器。几个电容器也可以并联以满足设计中的尺寸或高度要求。当LTC7138处于睡眠状态时,输出电容COUT对电感器的纹波电流进行滤波并存储能量以满足负载电流。由于反馈比较器的5mV典型滞后,输出纹波具有VOUT/160的下限。比较器的时间延迟增加了作为负载电流的函数的附加纹波电压。在此延迟时间内,LTC7138继续切换并向输出提供电流。输出纹波LTC7138 13 7138f有关更多信息,请访问www.linear.com/LTC7138应用程序轻负载时的信息可近似为:∆VOUT≈I PEAK 2–ILOAD • 4•10–6 COUT+VOUT 160空载时输出纹波大,满载时接近VOUT/160的下限。使用以下等式选择输出电容器COUT以限制输出电压纹波∆VOUT:COUT≥IPEAK•2•10–6∆VOUT-VOUT160输出电容器的值也必须足够大,以接受电感器中存储的能量,而在单个开关周期内输出电压不会发生大的变化。significant deviations do not offer much relief. Note that ripple current ratings from capacitor manufacturers are often based only on 2000 hours of life which makes it advisable to further derate the capacitor, or choose a capacitor rated at a higher temperature than required. Several capacitors may also be paralleled to meet size or height requirements in the design. The output capacitor, COUT, filters the inductor’s ripple current and stores energy to satisfy the load current when the LTC7138 is in sleep. The output ripple has a lower limit of VOUT/160 due to the 5mV typical hysteresis of the feedback comparator. The time delay of the comparator adds an additional ripple voltage that is a function of the load current. During this delay time, the LTC7138 continues to switch and supply current to the output. The output ripple LTC7138 13 7138f For more information www.linear.com/LTC7138 Applications Information at light load can be approximated by: ∆VOUT ≈ I PEAK 2 –ILOAD • 4•10–6 COUT + VOUT 160 The output ripple is a maximum at no load and approaches lower limit of VOUT/160 at full load. Choose the output capacitor COUT to limit the output voltage ripple ∆VOUT using the following equation: COUT ≥ IPEAK •2•10–6 ∆VOUT – VOUT 160 The value of the output capacitor must also be large enough to accept the energy stored in the inductor without a large change in output voltage during a single switching cycle.
发货期:1-3个工作日,具体可联系客服
质保:质保期一年!
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。
主营产品各种模块/卡件,控制器,触摸屏,伺服驱动器。
优势:供应进口原装正品,专业停产配件,
发货快,货期精准,
主营品牌包括 ABB贝利、GE/FUANC、FOXBORO、英维思TRICONEX 、本特利BENTLY、A-B罗克韦尔、艾默生EMERSON 、OVATION、MOTOROLA、XYVOM、霍尼韦尔HONEYWELL 、力士乐REXROTH、KUKA、NI、DEIF、横河、伍德沃德WOODWARD、瑞恩、施耐德SCHNEIDER 、安川、 穆格MOOG、PROSOFT等品牌。
只卖库存产品;出完需订货!价格以客服说明为准!!订货货期以客服说明为准,有任何疑问请联繁客服! Limited stock, Contact US!
●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,
Copyright ©2019-2022 瑞昌明盛自动化设备有限公司 版权所有 赣ICP备2021006016号