BD7F200HFN-LB
无需光电耦合器的绝缘型FLYBACK转换器
BD7F200HFN-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。
主要规格
特性:
FET
Integrated
Controller Type
PWM
Output Power [W]
5W@Vin=12V 10W@Vin=24V
Switch Current Limit(Typ.)[A]
2.75
Vin1(Min.)[V]
8
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]
2.9x3 (t=0.6)
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
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
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-LB | 70 / 50 | 24 | 5 | 1.0 | User's Guide |
Check | |
Isolated Flyback DCDC Converter | BD7F100EFJ-EVK-002 | BD7F100EFJ-LB | 70 / 50 | 24 | +15/-15 | 0.165 | User's Guide |
Check | |
Isolated Flyback DCDC Converter | BD7F100EFJ-EVK-003 | BD7F100EFJ-LB | 70 / 50 | 5 | 5 | 0.2 | User's Guide |
Check | |
Isolated Flyback DCDC Converter | BD7F100HFN-EVK-002 | BD7F100HFN-LB | 70 / 50 | 24 | 5 | 1.0 | User's Guide |
Check | |
Isolated Flyback DCDC Converter | BD7F100HFN-EVK-003 | BD7F100HFN-LB | 70 / 50 | 24 | +15/-15 | 0.165 | User's Guide |
Check | |
Isolated Flyback DCDC Converter | BD7F100HFN-EVK-004 | BD7F100HFN-LB | 70 / 50 | 5 | 5 | 0.2 | User's Guide |
Check | |
Isolated Buck DCDC Converter | 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-LB | 70 / 50 | 24 | 5 | 2.0 | User's Guide |
Check | |
Isolated Buck DCDC Converter | 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-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 | 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 | HSOP-J8 (4.9×6.0×1.0mm) |
||||||||
BD7F200HFN-LB | HSON8 (2.9×3.0×0.6mm) |
10W(Vin=24V) | 8.0~40V | 2.75A | |||||
BD7F200EFJ-LB | 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
-
- Evaluation Board - BD7F200HFN-EVK-001
Isolated Flyback DCDC converter, 24Vin, 15Vout x4ch, 0.15A, HSON8
-
- Evaluation Board - BD7F200HFN-EVK-002
Isolated Flyback DCDC converter, 24Vin, 5Vout, 2.0A, HSON8