BD7F100EFJ-LB
无需光电耦合器的绝缘型FLYBACK转换器

本产品是面向工业设备市场的产品，保证可长期稳定供货。是适合这些用途的产品。本产品是无需光电耦合器的绝缘型FLYBACK转换器为获得通过变压器绝缘的稳定的输出电压，无需以往用途中所需的光电耦合器、变压器3次绕组构成的反馈电路，大幅度减少了部件个数，可实现小型、高可靠绝缘型电源应用。采用独创的适应型导通时间控制技术，不需要以往方式中所需的外接相位补偿部件，可实现简单、高性能的绝缘型电源应用。

We recommend BD7F100UEFJ-LB for your new development. It uses different production lines for the purpose of improving production efficiency. Electric characteristics noted in Datasheet does not differ between Production Line.

Data Sheet 购买
Data Sheet 购买

主要规格

 
型号 | BD7F100EFJ-LBE2
Status | 可购买
封装 | HTSOP-J8
包装形态 | Taping
包装数量 | 2500
最小独立包装数量 | 2500
RoHS | Yes

特性：

FET

Integrated

Controller Type

PWM

Output Power [W]

1W@Vin=5.0V 5W@Vin=24V

Switch Current Limit(Typ.)[A]

1.25

Vin1(Min.)[V]

3

Vin1(Max.)[V]

40

SW frequency (Max.)[kHz]

400

Channel

1

Light Load mode

Yes

EN

Yes

Soft Start

Yes

Thermal Shut-down

Recovery

Under Voltage Lock Out

Yes

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

125

Package Size [mm]

4.9x6 (t=1)

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特点：

  • Guaranteed long time supply availability for
    Industrial Applications.
  • No need for an optocoupler or a transformer tertiary winding.
    The output voltage can be set by two external
    resistors and the transformer turns ratio.
  • Uses Original Adapted Type ON-Time Control Technology.
    High-speed load response is realized and external
    phase compensation parts are unnecessary.
  • Fixed switching frequency and low output ripple
  • Highly efficient light load mode available (PFM operation)
  • Shutdown / Enable Control
  • Built-in N-Channel MOSFET
  • Soft start function
  • Output load compensation function
  • Protection functions:
    VIN Under Voltage Lock-Out (VIN UVLO)
    Over Current Protection (OCP)
    Thermal Shutdown Protection (TSD)

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。

Reference Design / Application Evaluation Kit

 
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