Innovative Current Sensing Solutions for Advanced Automotive Use
Revolutionizing Current Sensing with ROHM's New Amplifiers
In a significant advancement for the automotive sector, ROHM Semiconductor has unveiled a pioneering range of high accuracy current sense amplifiers. These innovative devices, namely the BD1423xFVJ-C and BD1422xG-C series, are engineered to operate efficiently in both negative and high voltage environments, thus setting a new standard for current monitoring in electric vehicles and other automotive applications.
Key Features of the BD1423xFVJ-C Series
High Voltage Capability
The BD1423xFVJ-C series, packaged in the TSSOP-B8J format, can handle input voltages reaching up to +80V. This feature makes it particularly suitable for high-voltage applications, such as 48V DC-DC converters and electric compressors. With three different gain configurations, these models, including the BD14230FVJ-C, BD14231FVJ-C, and BD14232FVJ-C, ensure versatility for various automotive needs.
Designed for Automotive Standards
All products in this series meet the AEC-Q100 automotive reliability standard, demonstrating ROHM's commitment to quality and safety. By leveraging its extensive analog expertise, ROHM ensures that these current sense amplifiers provide optimal performance in demanding automotive environments.
Exploring the BD1422xG-C Series
Ideal for Lower Voltage Applications
For applications requiring lower voltage, the BD1422xG-C series stands out with its capacity to support input voltages up to +40V in a compact SSOP6 package. This makes it an excellent choice for space-constrained automotive systems, implementing current monitoring solutions and overcurrent protections effectively within 5V/12V power supply networks.
Three Gain Options for Customization
This series, too, includes three different gain selections: BD14220G-C, BD14221G-C, and BD14222G-C, allowing engineers to tailor the devices to specific application needs with ease. This adaptability enhances its functionality across various application domains within the automotive industry.
Meeting the Demands of the Evolving Automotive Market
The automotive landscape is rapidly transforming, with an increasing shift towards 48V systems made necessary by the growing demand for electric vehicles. Alongside traditional 5V and 12V systems, the BD1423xFVJ-C and BD1422xG-C series are strategically developed to meet the exacting requirements of modern vehicles, where precise monitoring is paramount for safety and control.
By facilitating high accuracy current sensing through the amplification of tiny voltage drops across shunt resistors, ROHM’s products ensure reliable current flow measurement. They play a crucial role in enhancing vehicle functionality, contributing to an increased level of safety in automotive applications.
Simple Integration for Enhanced Design Efficiency
The recent advancements in ROHM’s products aim to boost space efficiency by consolidating the necessary current sensing circuitry into a single package. This includes integrating an operational amplifier with discrete components, thereby simplifying the connection of a shunt resistor needed for current detection.
The two-stage amplifier configuration, which incorporates a chopper amplifier at the input and an auto-zero amplifier at the output, stands as a testament to ROHM's innovation. With internal resistor matching for gain settings, these devices achieve stable and accurate current sensing (±1%), minimizing temperature variation effects.
Future Directions in Current Sensing Technology
As the automotive industry continues to evolve, ROHM remains dedicated to providing top-notch solutions that emphasize precision and reliability. The company is focused on the development of technologies that cater specifically to the needs of electric vehicles, aligning with the industry's continual growth trajectory.
Frequently Asked Questions
What are the main applications of ROHM's new current sense amplifiers?
ROHM's current sense amplifiers can be used in various automotive systems, including electric vehicle power supplies and redundant power systems.
What voltage levels do the BD1423xFVJ-C series support?
The BD1423xFVJ-C series can handle input voltages up to +80V, making them suitable for high-voltage applications.
Are the amplifiers compliant with automotive standards?
Yes, all products in the BD1423xFVJ-C and BD1422xG-C series are qualified under the AEC-Q100 automotive reliability standard.
How do these amplifiers enhance design efficiency?
The integration of essential current sensing circuitry into a single package reduces the complexity of design while also improving space efficiency.
What options are available in the BD1422xG-C series?
This series includes three models with varying gain settings to cater to different voltage requirements and applications.
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