【应用】光耦兼容型隔离驱动器SLM340CK-DG用于UPS不间断电源,CMTI高达150kv/μs
UPS不间断电源项目,母线到电池BUCK-BOOST电路部分的IGBT之前通常会选用传统光耦驱动器进行隔离并驱动。现数明半导体推出的采用容隔离技术的光耦兼容型隔离驱动器SLM340CK-DG,输入控制采用电流控制的策略以模拟传统光电隔离器的输入控制方式,故在进行PTP替换时无需大量更改外围电路。本文就SLM340CK-DG从功能性能参数以及封装尺寸方面进行分析,讨论其在UPS不间断电源项目中作为隔离驱动器时的应用优势。
SLM340CK-DG功能以及典型应用如下:
图1. SLM340CK-DG功能以及典型应用
由上可知,SLM340CK-DG为典型的采用容隔离技术的隔离驱动器,可用于驱动IGBT;同时输入控制端采用了电流控制策略用于模拟传统光电隔离器的发光二极管,故对传统光耦驱动器进行升级时更便捷高效 。
SLM340CK-DG性能参数如下表:
表1. SLM340CK-DG性能参数
由上表可知,SLM340CK-DG输出端供电电压范围较宽,14V-40V的宽电压范围更易兼容辅助电源的电压,带来更宽的适用范围;传输延迟低至140ns,较低的传输延迟能带来更快的开关速度,有利于系统高频化设计;匹配延迟低至25ns,较低的匹配延迟,对于半桥结构的死区控制更容易;共模瞬态抗扰度高达150KV/μs,有效抑制共模干扰防止功率开关管误导通;输入端反向耐压值高达30V,让上下管硬件互锁设计成为可能,同时更为稳定可靠;-40℃-150℃的工作温度范围完全满足工业设计要求。
SLM340CK-DG封装尺寸如下:
图2. SLM340CK-DG封装尺寸
综上所述,SLM340CK-DG作为隔离驱动器用于UPS不间断电源在兼容性,系统高频化趋势以及抗干扰能力方面具备一定的优势。
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最小起订量: 1pcs 提交需求>
可定制射频隔离器/环行器(10M-40GHz),双工器/三工器(30MHz/850MHz-20GHz),滤波器(DC-20GHz),功分器,同轴负载,同轴衰减器等射频器件;可定制频率覆盖DC~110GHz,功率最高20KW。
最小起订量: 1 提交需求>
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