ROHM’S Isolated Flyback DC-DC Converter BD7Fx05EFJ-C for xEV Reduce Application Size and Efforts for Noise Design Countermeasure

2023-01-30 ROHM News

ROHM has recently developed an isolated flyback DC-DC converter, BD7Fx05EFJ-C (BD7F105EFJ-C, BD7F205EFJ-C) optimized for gate drive power supplies in xEV applications such as electric compressors, and PTC heaters.

In recent years, xEVs such as hybrid and electric vehicles have become increasingly popular as the industry moves towards achieving a sustainable society. xEVs, which primarily use electricity as their energy source, are equipped with unique applications such as electric compressors for AC, and PTC heaters to raise the cabin temperature. And as these applications are driven by high voltages, it is necessary to isolate the primary circuit that includes the battery from the secondary circuit comprised of the motor and other systems to ensure safety. However, in addition to issues such as larger mounting area and power consumption, conventional isolated circuit configurations require considerable noise countermeasures for switching frequencies that vary with output current.


ROHM’s new product utilizes a circuit configuration that achieves stable switching frequency characteristics without requiring a photocoupler, decreasing application size together with the workload for noise design countermeasure. Leveraging ROHM’s superior analog design technology allows the BD7Fx05EFJ-C to eliminate the need for photocouplers, transformer auxiliary windings, and peripheral components conventionally necessary to detect secondary-side voltage and current. On top of, next to solving issues with photocouplers, such as large power consumption, fluctuating detection accuracy due to temperature, and deterioration over time, ROHM has also achieved greater miniaturization by reducing the number of components. As a result, it is possible to reduce the number of components – including the photocoupler – used for current detection by 10 (equivalent to a board area of 30%) compared to general isolated flyback power supply circuits.


The BD7Fx05EFJ-C is also equipped with an adaptive ON-time control function that fixes the switching ON time, ensuring a stable frequency of around 350kHz regardless of output power. To be complaint with the CISPR25 automotive EMC standard requires considerable noise design in the frequency range from 150kHz to 300kHz, but as ROHM’s new converters do not fall within this band, noise countermeasures can be greatly simplified. This, together with a spread spectrum function that minimizes radiated noise, contributes to reducing the number of efforts for noise design.


Going forward, ROHM will continue to develop products that contribute to greater miniaturization and lower noise by leveraging its strength in analog technology, helping to achieve a sustainable society.


Product Lineup

In addition to reducing the number of components and person-hours required for noise countermeasures, the BD7Fx05EFJ-C improves application reliability by incorporating multiple protection circuits along with a function that stabilizes the output voltage.

*1 Load Compensation Function: VF changes based on the output load of the secondary diode can cause the output voltage to drop.
Compensating for this output voltage drop stabilizes the output current-output voltage characteristics.

*2 Multiple protection functions: Input undervoltage protection, thermal shutdown, overcurrent protection, short-circuit protection, reference voltage terminal protection, and battery short-circuit protection.


Application Examples

ROHM’s new DC-DC converter IC is ideal for gate driver power supplies that must be isolated from the battery for safety.

Automotive: electric compressors, PTC heaters, inverters

Industrial: Power supplies, PLC (Programmable Logic Controller), inverters


Online Sales Information

Availability: Now (in mass production)


Product Information

Applicable Part Nos: BD7F105EFJ-CE2, BD7F205EFJ-CE2

Evaluation Board information

Evaluation Board Part Nos: BD7F105EFJ-EVK-001, BD7F205EFJ-EVK-001

授权代理商:世强先进(深圳)科技股份有限公司
技术资料,数据手册,3D模型库,原理图,PCB封装文件,选型指南来源平台:世强硬创平台www.sekorm.com
现货商城,价格查询,交期查询,订货,现货采购,在线购买,样品申请渠道:世强硬创平台电子商城www.sekorm.com/supply/
概念,方案,设计,选型,BOM优化,FAE技术支持,样品,加工定制,测试,量产供应服务提供:世强硬创平台www.sekorm.com
集成电路,电子元件,电子材料,电气自动化,电机,仪器全品类供应:世强硬创平台www.sekorm.com
  • +1 赞 0
  • 收藏
  • 评论 0

本文由玄子转载自ROHM News,原文标题为:ROHM’S Isolated DC-DC Converters for xEV Reduce Application Size and efforts for noise design countermeasure,本站所有转载文章系出于传递更多信息之目的,且明确注明来源,不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。

评论

   |   

提交评论

全部评论(0

暂无评论

相关推荐

【IC】罗姆新推隔离型DC-DC转换器BD7Fx05EFJ-C,实现xEV应用小型化,减少降噪设计工时

ROHM开发出两款隔离型反激式DC-DC转换器BD7F105EFJ-C和BD7F205EFJ-C,非常适用于xEV的主驱逆变器、车载充电器、电动压缩机以及PTC加热器等应用中配备的栅极驱动器的驱动电源,有助于降低辐射噪声的展频功能,减少降噪设计工时。

新产品    发布时间 : 2022-12-08

NOVOSENSE Automotive Solution Enable the Electrification and Intellectualization of xEV

型号- NSL23916-Q1,NSI1311,NSI6601,NSI7258,NPC060N065A,NCA8244,NSM2017,NSM2019,NSM2013,NSI22C11,NSM2015,NSM2011,NSR33XXX,NSC9262,NSI1300,NSC9264,NSREF31XX,NSI1306,NSR2240X,NPS0X0N065A,NSP1830,NCA1169,NCA1044,NCA1043,NSR7808,NSOPA240X,NSE11409,NSP1831,NSC9260X,NSP1832,NSM2020,NSL2161X-Q1,NSD8306,NSOPA8XXX,NSD731X,NSD8308,NSI67XX,NSD1026V,NSE34050,NSL31682-Q1,NSCSA24X,NSL21912-Q1,NSI6622V,NSPDC1,NSR31XXX,NCA1021S,NSD8310,NSD1624,NSD8312,NPI030N065A,NSR104XX,NSI6651,NSD11416,NSI22C12,NCA1051A,NSUC1602,NCA1462,NSD8381,NSD56008,NSM3011,NSPADX,NSM3013,NSM3012,NSI6801,NST60-Q1,NSUC1610,NSI824X,NCA9539,NST175-Q1,NSR7850,NST175,NSM203X,NSIP605X,NSIP3266-Q1,NSOPA9XXX,NSI6911,NST86-Q1,NSP1631,NSD12409,NSP1632,NSPASX,NSP1630,NSE425X,NSM1013,NPI040N120A,NSL23924-Q1,NCA9555,NSI822X,NSA9264,NCA1042B,NSD12416,NSA9260X,NSPGM2,NSM2117,NSPGM1,NSI6602V,NSD3608,NSM2113,NSM2115,NSD3604,NSL31520-Q1,NSL2163X-Q1,NSR35XXX,NST20,NSREF30XX,NPC0X0N120A,NSI1200,NSI6611,NSPAS1,NSPAS3,NCA1145,NST235-Q1,NSCSA21X,NCA1043B,NSE5702,NSI6601M,NSE5701,NSR114XX,NSR1048,NSL23716X-Q1,NSM1030

应用及方案  -  纳芯微电子  - April 2024 PDF 英文 下载

LED Driver for Automotive Exterior lamps 1ch High Current LED Controller Boost LED Driver for Automotive BD18353EFV-M Evaluation Board User's Guide

型号- BD18353EFV-M,REFLED009,REFLED008,REFLED008-EVK-XXX,REFLED009-EVK-XXX,REFLED010-EVK-001,REFLED008-EVK-002,REFLED010-EVK-002,REFLED008-EVK-003,REFLED010,REFLED010-EVK-003,REFLED009-EVK-003,REFLED008-EVK-001,REFLED010-EVK-004,REFLED009-EVK-004,REFLED009-EVK-001,REFLED009-EVK-002,REFLED010-EVK-XXX,REFLED008-EVK-004

用户指南  -  ROHM  - Rev.002  - 09. Feb. 2024 PDF 英文 下载 查看更多版本

Single Synchronous Buck DC/DC Converter For Automotive BD9S300MUF-C Evaluation Board BD9S300MUF-TSB-001 (2.7V to 5.5V Input, 3A)

型号- MCR01MZPF1602,GCM21BR71A106K,MCR01MZPF2402,MCR01MZPF1302,MCR01MZPF1202,BD9S300MUF-TSB-001,CLF5030NIT-1R0N-D,GCM31CR70J226K,MCR01MZPF1003,MCR01MZPF1002,MCR01MZPF2002,MCR01MZPF7502,MCR01MZPF1802,GCM155R71C104K,GCM155R71H332K,MCR01MZPF8201,GCM155R71H222K,MCR01MZPF7501,BD9S300MUF-C,MCR01MZPF3002,GCM155R71H472K

用户指南  -  ROHM  - Rev.001  - Oct.2021 PDF 英文 下载

Automotive Motion Sensor Universal Evaluation Board (UEVB) User Guide

型号- IAM-20380,IAM-20381,IAM-20680,IAM-20680HP,IAM-20680HT

用户指南  -  TDK INVENSENSE  - Revision: 1.0  - 11/11/2021 PDF 英文 下载

用户指南  -  ROHM  - Rev.001  - July 2022 PDF 英文 下载

用户指南  -  ROHM  - Rev.001  - Sept.2023 PDF 英文 下载

REFLED004-EVK-001 BD83A14EFV-M Evaluation Board User's Guide

型号- BD83A14EFV-M-001,REFLED004-EVK-001,BD83A14EFV-M

用户指南  -  ROHM  - Rev.001  - Dec.2022 PDF 英文 下载

REFLED003-EVK-001 BD82A26MUF-M Evaluation Board User's Guide

型号- REFLED003-EVK-001,BD82A26MUF-M

用户指南  -  ROHM  - Rev.001  - 15. Dec. 2022 PDF 英文 下载

用户指南  -  ROHM  - Rev.001  - Sept.2023 PDF 英文 下载

应用笔记或设计指南  -  ROHM  - Rev.001  - Dec.2022 PDF 英文 下载

ROHM(罗姆)适配NXP I.MX8平台的电源管理IC产品介绍

型号- BD71837,BD71837AMWV,BD71837MWV,BD71850MWV,BD71837A,BD71847,BD71847AMWV

商品及供应商介绍  -  ROHM  - 2019年5月28日 PDF 英文 下载

应用笔记或设计指南  -  ROHM  - Rev.002  - Sep. 2023 PDF 英文 下载

用户指南  -  ROHM  - Rev.001  - July 2022 PDF 英文 下载

展开更多

电子商城

查看更多

品牌:ROHM

品类:evaluation board

价格:¥118.4455

现货: 6

品牌:ROHM

品类:Temperature sensor evaluation board

价格:¥205.1045

现货: 5

品牌:ROHM

品类:evaluation board

价格:¥410.2090

现货: 5

品牌:ROHM

品类:Pressure sensor evaluation board

价格:¥205.1045

现货: 5

品牌:ROHM

品类:evaluation board

价格:¥204.5877

现货: 3

品牌:ROHM

品类:Evaluation Board

价格:¥293.6694

现货: 2

品牌:ROHM

品类:Evaluation Board

价格:¥2,045.8763

现货: 2

品牌:ROHM

品类:Evaluation Board

价格:¥620.4390

现货: 2

品牌:ROHM

品类:Evaluation Board

价格:¥293.6694

现货: 2

品牌:ROHM

品类:Evaluation Board

价格:¥479.1658

现货: 1

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

现货市场

查看更多

品牌:SKYWORKS

品类:开发工具

价格:¥104.0034

现货:52

品牌:SKYWORKS

品类:调谐器

价格:¥149.1447

现货:13

品牌:RENESAS

品类:评估板

价格:¥79.5420

现货:10

品牌:SKYWORKS

品类:Isolator

价格:¥19.5378

现货:10

品牌:SKYWORKS

品类:双频射频合成器

价格:¥1,949.7617

现货:10

品牌:RENESAS

品类:评估板

价格:¥10,104.9120

现货:9

品牌:RENESAS

品类:开发板

价格:¥5,052.4560

现货:8

品牌:RENESAS

品类:开发工具

价格:¥266.5660

现货:7

品牌:RENESAS

品类:EVALUATION BOARD

价格:¥9,620.4300

现货:7

品牌:HITTITE

品类:开发工具

价格:¥3,459.1681

现货:7

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

品牌:

品类:

价格:

现货:

查看更多

授权代理品牌:接插件及结构件

查看更多

授权代理品牌:部件、组件及配件

查看更多

授权代理品牌:电源及模块

查看更多

授权代理品牌:电子材料

查看更多

授权代理品牌:仪器仪表及测试配组件

查看更多

授权代理品牌:电工工具及材料

查看更多

授权代理品牌:机械电子元件

查看更多

授权代理品牌:加工与定制

世强和原厂的技术专家将在一个工作日内解答,帮助您快速完成研发及采购。
我要提问

954668/400-830-1766(工作日 9:00-18:00)

service@sekorm.com

研发客服
商务客服
服务热线

联系我们

954668/400-830-1766(工作日 9:00-18:00)

service@sekorm.com

投诉与建议

E-mail:claim@sekorm.com

商务合作

E-mail:contact@sekorm.com

收藏
收藏当前页面