ROHM Parametric

隔离器

隔离器

Digital isolators are semiconductor devices that transmit digital signals while providing electrical isolation. By separating control circuits from high-voltage or noisy environments, they contribute to improved system safety. ROHM’s digital isolators feature high isolation voltage designed for industrial applications, enabling stable and reliable isolated signal transmission in demanding environments such as inverters, motor control systems, and PLCs.

 
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      产品概要

       

      产品概要

      HSON8BD7Fx00HFN-LB HTSOP-J8BD7Fx00EFJ-LB

      为稳定隔离电源的输出电压，一般采取使用寿命有限的光电耦合器、辅助绕组等元器件的方式。
      此次ROHM推出无需这些反馈电路的隔离反激式DC/DC转换器。
      能轻松构成隔离电源，适用于大功率逆变器、蓄电系统、FA设备等工业设备电源。

      购买样品/评估板

      评估板BD7F100HFN-EVK-001

      不仅BD7F100xxx-LB/BD7F200xxx-LB系列，搭载BD7F100HFN-LB的评估板 "BD7F100HFN-EVK-001" 也开始在网上销售。
      能轻松评估输入电压24V、输出电压5V、输出电流800mA的隔离电源。

      评估板阵容

      Type Part No. Image IC Board size
      X/Y [mm]      		 Vin [V] Vout
      [V]      		 Iout
      [A]      		 User's
      Guide      		 Distribution
      Inventory
      Isolated Flyback DCDC Converter BD7F100EFJ-EVK-001 BD7F100EFJ-EVK-001 BD7F100EFJ-LB 70 / 50 24 5 1.0 User's
      Guide      		 Check
      Isolated Flyback DCDC Converter BD7F100EFJ-EVK-002 BD7F100EFJ-EVK-002 BD7F100EFJ-LB 70 / 50 24 +15/-15 0.165 User's
      Guide      		 Check
      Isolated Flyback DCDC Converter BD7F100EFJ-EVK-003 BD7F100EFJ-EVK-003 BD7F100EFJ-LB 70 / 50 5 5 0.2 User's
      Guide      		 Check
      Isolated Flyback DCDC Converter BD7F100HFN-EVK-002 BD7F100HFN-EVK-002 BD7F100HFN-LB 70 / 50 24 5 1.0 User's
      Guide      		 Check
      Isolated Flyback DCDC Converter BD7F100HFN-EVK-003 BD7F100HFN-EVK-003 BD7F100HFN-LB 70 / 50 24 +15/-15 0.165 User's
      Guide      		 Check
      Isolated Flyback DCDC Converter BD7F100HFN-EVK-004 BD7F100HFN-EVK-004 BD7F100HFN-LB 70 / 50 5 5 0.2 User's
      Guide      		 Check
      Isolated Buck DCDC Converter BD7F200EFJ-EVK-001 BD7F200EFJ-EVK-001 BD7F200EFJ-LB 90 / 70 24 15 x 4ch 0.150 User's
      Guide      		 Check
      Isolated Buck DCDC Converter BD7F200EFJ-EVK-002 BD7F200EFJ-EVK-002 BD7F200EFJ-LB 70 / 50 24 5 2.0 User's
      Guide      		 Check
      Isolated Buck DCDC Converter BD7F200HFN-EVK-001 BD7F200HFN-EVK-001 BD7F200HFN-LB 90 / 70 24 15 x 4ch 0.150 User's
      Guide      		 Check
      Isolated Buck DCDC Converter BD7F200HFN-EVK-002 BD7F200HFN-EVK-002 BD7F200HFN-LB 70 / 50 24 5 2.0 User's
      Guide      		 Check

      产品阵容

      型号 数
      据
      表      		 封装 输出功率 输入
      耐压      		 输入电压
      范围      		 过流
      限制      		 开关频率 工作温度 功能
      BD7F100HFN-LB PDF HSON8
      (2.9×3.0×0.6mm)      		 1W(Vin=5V)
      5W(Vin=24V)      		 45V 3.0~40V 1.25A 400kHz
      (Typ.)      		 -40℃～＋125℃ Enable Soft Start Efficient Light
      LoadMode UVLO Over Current
      Protection Theminal Protection
      BD7F100EFJ-LB PDF HSOP-J8
      (4.9×6.0×1.0mm)
      BD7F200HFN-LB PDF HSON8
      (2.9×3.0×0.6mm)      		 10W(Vin=24V) 8.0~40V 2.75A
      BD7F200EFJ-LB PDF HSOP-J8
      (49×6.0×1.0mm)

      特点1：无需光电耦合器&辅助绕组，实现小型化

      1次侧施加反馈电路时，为了检测2次侧的电压、电流，以往需要使用光电耦合器、辅助绕组及构成这些电路的元器件。新方式不需要这些电路，不仅能简化设计、而且实现小型化、省电化、高可靠性。用一个电阻即可实现稳定的输出电压。

      特点2：采用自适应导通时间控制，改善负载响应特性

      以往的隔离电源控制IC存在负载电流瞬间变动时会引起输出电压大变动的问题。
      此次，隔离型电源控制IC采用了非隔离型电源控制IC中衍生的自适应导通时间控制。
      采用ROHM独有的新控制方式，输出电压变动比一般控制方式降低65%以下，即200mV（负载电流1A、上升时间100μs时），对负载电流瞬间变动具有高响应特性，有助于提高可靠性。