【应用】最大输出负载电流2A的同步降压转换器SCT2321TVBR用在电源模块,可提供固定500kHz开关频率
目前电源模块种类繁多,主要有AC-DC模块、DC-DC模块等,与分立的方案相比它的集成度更高、功率密度和效率也会更好,主要应用于仪器仪表、轨道交通、工业控制设备、船舶等行业。
在低压DC-DC模块的设计中,辅助电源的选择也是其中重要的一部分。辅助电源主要用来给MCU或DSP等数字控制器提供电源方案,要求输入电压范围宽,输出纹波小等。推荐一颗芯洲科技的同步降压转换器SCT2321TVBR应用于电源模块辅助电源的设计,最大输出持续电流可以达到2A。
芯洲科技的SCT2321TVBR应用于电源模块辅助电源的设计有以下特点:
1、输入电压范围为3.2V~32V,具有工作电压范围宽的特点,可以满足一般电压电源模块的设计。
2、提供固定500kHz开关频率,并支持强制脉冲宽度调制(FPWM)模式,有利于在轻负载下的小输出纹波。
3、最大支持2A的持续输出电流,有利于满足后级电路的电流要求。
4、关断电流典型值仅为1μA,静态电流典型值为250μA,有利于产品低功耗的设计。
5、工作温度范围支持-40℃~+125℃,具有宽工作温度范围的特点,有利于满足工业应用的要求。
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芯洲科技DCDC转换器选型表
降压DCDC(Buck)开关稳压电源的选型,降压DCDC输入电压包含18V、30V、40V、60V、100V,输入电压含14V、20V,输出电流1~12A,开关频率:300kHz~2.5mHz
产品型号
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品类
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最小输入电压(V)
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最大输入电压(V)
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ABS MAX VIN(V)
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连续输出电流(A)
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反馈电压(V)
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过流保护阈值(V)
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静态电流(uA)
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开关频率(Hz)
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软启动时间(ms)
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封装和管脚数
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SCT2221TVBR
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降压DCDC转换器
|
4.2
|
17
|
18
|
2
|
0.8
|
2.4
|
265
|
750K
|
2.5
|
TSOT23-6L
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选型表 - 芯洲科技 立即选型
【IC】圣邦微推出新品8A、带3.3V LDO的同步降压转换器SGM61280,适合宽输入电压应用
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SGM61235 4.5V to 28V Input, 3A Output, Synchronous Buck Converter
型号- SGM61235B,SGM61235,SGM61235A,SGM61235BXTN6G/TR,SGM61235AXTN6G/TR
芯洲科技SCT2A23助力工业4.0,输入电压可达100V,1500V隔离电源系统解决方案
描述- SCT2A23 Fly-Buck转换器是一个同步降压转换器,其中的电感用耦合电感或反激式变压器所取代,构成类似反激的拓扑,实现原副边隔离据不同的变压器选型,可实现单路或多路隔离输出;如在PLC、数据采集以及测量设备应用中,该隔离边界可提供较好的抗噪功能,典型应用如隔离式RS-232 和RS-485 通信通道、线路驱动器、隔离式放大器、传感器以及CAN 收发器;在伺服等领域可为IGBT提供隔离栅极驱动电源、医疗应用中提供隔离确保安全性。
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SGMICRO圣邦微电子推出SGM61330,一款3.8V至36V输入、3A、同步降压转换器。该器件可应用于工业电源、电信和数据通信系统,以及通用宽输入电压调节等场景。这款器件设计巧妙,能够轻松应对各种由不稳定电源供电的工业应用场景。其采用的峰值电流模式控制技术,使得补偿和逐周期电流限制变得轻而易举。
【应用】国产同步降压转换器用于DCDC电源模块,采用峰值电流模式控制,宽输入电压4.5~40V
电源模块有利于节省开发时间,并可满足不同的应用需求。某用户在做一款DC/DC电源模块产品,需要一款输入24V,输出5/12V的同步降压转换器;为此推荐芯洲的SCT2401TVBR可适用于此类产品上。
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可来图定制均温板VC尺寸50*50mm~600*600 mm,厚度1mm~10mm,最薄0.3mm。当量导热系数可达10000W/M·K,散热量可达10KW, 功率密度可达50W/cm²。项目单次采购额需满足1万元以上,或年需求5万元以上。
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可定制电机的连续转矩范围1Nm至2000Nm,峰值转矩3Nm至5500Nm,电机延长线长度、变换编码器类型。
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