ROHM's Isolated Power Supply Control ICs for Industrial Inverters

KYOTO, JAPAN and SANTA CLARA, CA--(Marketwired - August 16, 2016) - ROHM has recently announced the availability of isolated flyback-type DC/DC converter control ICs for inverters in high power industrial equipment such as FA/solar inverters and power storage systems.Isolation is almost always built into electronic equipment to provide protection against shock and damage. High voltage, high power industrial applications (including power storage systems and solar inverters which are seeing increased adoption) are no exception, requiring even more stringent reliability demands due to the harsher temperature conditions and the need for continuous, long-term operation.Conventional solutions utilize a optocoupler and other components for flyback-type isolated power supply control. However, this presents challenges associated with current consumption and reliability (including circuit scale and product life). In contrast, the BD7F series reduces the number of external parts by nearly half by eliminating the need for a optocoupler, providing greater energy savings, reliability, and miniaturization. In addition, a newly developed adaptive ON time control method is used to improve load response time (a drawback of conventional isolated power supply ICs), while voltage fluctuation is limited to under 200mV, contributing to even higher reliability.Samples, along with an evaluation board, BD7F100HFN-EVK-001, integrating the BD7F100HFN-LB, will be available for purchase. This board enable to be designed for 24V input voltage and 5V output voltage with output current range of 13.8mA to 800mA for maximum output power of 4W.The BD7F100 SeriesAvailability: NowPricing: Starting from $4.30 /unit (1,000 pcs)The BD7F200 SeriesAvailability: Now (Sample), October 2016 (OEM Quantities)Pricing: Starting from $4.69 /unit (1,000 pcs)The BD7F100HFN-EVK-100
Availability: Fall, 2016
NOTE: Available now in Japan ( Chip One Stop, Zaikostore).

Key Features

1High reliability isolation performance
The BD7F series of isolated power supply control ICs are optimized for industrial equipment requiring continuous, long-term operation under extreme conditions. Utilizing state-of-the-art power BiCDMOS processes and leveraging proprietary advanced analog technology allow ROHM to detect the secondary side voltage and current from the primary side. This eliminates the need for a optocoupler or tertiary transformer winding required with conventional configurations, reducing the number of external parts by half which contributes to greater reliability, power savings, and end-product miniaturization.

2Improved load response characteristics through adaptive ON time control
ON time control, typically used in conventional isolated power supply control ICs, is adopted to minimize output voltage fluctuations caused by instantaneous changes in load current.

ROHM's new adaptive ON time control method limits output voltage fluctuations to 200mV, 65% less than conventional solutions (at a load current of 1A and rise time of 100us). As a result, load response against instantaneous load current fluctuations is improved, increasing reliability considerably.

3. Optional evaluation board makes it easy to verify performance
In addition to the control ICs, an evaluation board (BD7F100HFN-EVK-001) is offered integrating the BD7F100HFN-LB, making it easy to evaluate isolated power supply operation (24V input, 5V/800mA output).

About ROHM Semiconductor

ROHM Semiconductor is an industry leader in system LSI, discrete components and module products, utilizing the latest in semiconductor technology. ROHM's proprietary production system, which includes some of the most advanced automation technology, is a major factor in keeping it at the forefront of the electronic component manufacturing industry. In addition to its development of electronic components, ROHM has also developed its own production system so that it can focus on specific aspects of customized product development. ROHM employs highly skilled engineers with expertise in all aspects of design, development and production. This allows ROHM the flexibility to take on a wide range of applications and projects and the capability to serve valuable clients in the automotive, telecommunication and computer sectors, as well as consumer OEMs.

Image Available:
Image Available:
Image Available:
Image Available:
Image Available:
Embedded Video Available:

Jayme Pontious 

Email Contact

Review Article Be the first to review this article


Featured Video
Peggy AycinenaWhat Would Joe Do?
by Peggy Aycinena
Acquiring Mentor: Four Good Ideas, One Great
More Editorial  
Manager, Field Applications Engineering for Real Intent at Sunnyvale, CA
Upcoming Events
DeviceWerx - 2016 at Green Valley Ranch Casino & Resort Las Vegas NV - Nov 3 - 4, 2016
2016 International Conference On Computer Aided Design at Doubletree Hotel Austin TX - Nov 7 - 10, 2016
ICCAD 2016, Nov 7-10, 2016 at Doubletree Hotel in Austin, TX at Doubletree Hotel Austin TX - Nov 7 - 10, 2016
Electric&Hybrid Aerospace Technology Symposium 2016 at Conference Centre East. Koelnmesse (East Entrance) Messeplatz 1 Cologne Germany - Nov 9 - 10, 2016
S2C: FPGA Base prototyping- Download white paper

Internet Business Systems © 2016 Internet Business Systems, Inc.
595 Millich Dr., Suite 216, Campbell, CA 95008
+1 (408)-337-6870 — Contact Us, or visit our other sites:
AECCafe - Architectural Design and Engineering TechJobsCafe - Technical Jobs and Resumes GISCafe - Geographical Information Services  MCADCafe - Mechanical Design and Engineering ShareCG - Share Computer Graphic (CG) Animation, 3D Art and 3D Models
  Privacy Policy