The automotive industry is undergoing rapid evolution, driven by the increasing integration of advanced electronic systems. With a focus on safety, efficiency, and miniaturization, integrated circuits (ICs) are at the core of this transformation. Recent developments, such as ABLIC’s S-19161A/B protection IC and Infineon’s BTM90xx H-bridge driver ICs, exemplify how cutting-edge technology is shaping the automotive landscape. These solutions address key challenges in battery management and motor control, paving the way for smarter, safer, and more efficient vehicles.
Revolutionizing Automotive Battery Backup with ABLIC’s S-19161A/B Protection IC
Emergency power systems, such as those used in e-Call systems and Telematics Control Units (TCUs), are critical components of modern vehicles. ABLIC’s S-19161A/B IC offers a groundbreaking solution by enabling the replacement of multiple nickel-metal hydride (NiH) batteries with a single lithium-ion battery. This advancement significantly reduces the size and complexity of backup power systems while enhancing reliability and safety.
Key Features and Benefits
1. Extended Temperature Range
Operating across a wide temperature range of -40°C to 125°C, the S-19161A/B surpasses the traditional 85°C limit of most protection ICs. This feature ensures stable performance in harsh automotive environments, where extreme temperatures are common.
2. Unmatched Overcharge Detection Accuracy
With an overcharge detection voltage accuracy of ±15mV, the IC sets a new standard for precision. This level of accuracy not only optimizes battery performance but also enhances safety by reducing the risk of overcharging, a major concern in lithium-ion battery systems.
3. Three Levels of Discharge Overcurrent Protection
Safety is a top priority in automotive applications, and the S-19161A/B delivers robust protection with its three-tiered approach:
Discharge overcurrent 1: Detects moderate abnormalities.
Discharge overcurrent 2: Monitors more severe deviations.
Load short-circuiting: Provides isolation during critical failures.
This multi-level protection ensures that backup power systems operate safely, even under abnormal conditions.
4. Compact Design
The IC is packaged in a SOT-23-6 format, with dimensions of just 2.9×2.8×1.35mm, allowing for significant miniaturization of backup systems. This compact form factor is ideal for space-constrained automotive applications.
Automotive Applications
Designed to meet Production Part Approval Process (PPAP) requirements and undergoing AEC-Q100 Grade 1 certification, the S-19161A/B is tailored for high-reliability automotive systems. Its use in e-Call systems and TCUs ensures uninterrupted operation during emergencies, while its compatibility with lithium-ion batteries supports the industry’s shift toward more energy-efficient solutions.
Driving Innovation in Motor Control with Infineon’s BTM90xx H-Bridge ICs
As vehicles become increasingly sophisticated, motorized components such as seats, mirrors, and doors play a critical role in enhancing comfort and functionality. Infineon’s BTM90xx family of H-bridge driver ICs addresses the growing need for precise, efficient, and safe motor control.
Key Features and Specifications
1. Flexible Input Options
The BTM90xx family includes four variants, offering flexibility for different control requirements:
BTM9010EP: ±3.4A continuous current, PWM input.
BTM9011EP: ±3.4A continuous current, SPI bus input.
BTM9020EP: ±5.5A continuous current, PWM input.
BTM9021EP: ±5.5A continuous current, SPI bus input.
The SPI-enabled variants can be daisy-chained, enabling the control of multiple motors using a single four-wire bus. PWM variants provide separate high-side and low-side control inputs, offering greater design flexibility.
2. ISO26262 Functional Safety Compliance
Designed with functional safety in mind, the BTM90xx ICs include comprehensive protection features such as:
‒ Over-temperature protection.
‒ Under-voltage and over-voltage protection.
‒ Over-current and cross-current protection.
‒ Short-circuit protection.
These features ensure reliable and safe operation, aligning with the stringent safety requirements of modern automotive systems.
3. Compact and Efficient Design
Packaged in a 4.9×6mm TSDSO-14 format with a thermal pad for efficient heat dissipation, the ICs are optimized for space-constrained designs. They operate across a voltage range of 7-18V, with some functionality at 4.5V and survivability up to 40V.
4. Advanced Monitoring and Diagnostics
Real-time monitoring capabilities allow engineers to access critical diagnostic information, such as current measurements through both high-side and low-side switches. This data facilitates precise control and enhances system reliability.
Applications in Automotive System
The BTM90xx ICs are designed for motorized applications such as:
● Adjustable seats and mirrors.
● Power windows and sunroofs.
● Door locks and liftgates.
The family supports current limits of up to 10A (BTM901x) or 20A (BTM902x), ensuring compatibility with a wide range of motors. Infineon also provides simulation models, evaluation boards, and software tools to simplify the integration process.
Emerging Automotive Trends in 2025
The advancements represented by ABLIC and Infineon’s ICs align with key trends shaping the automotive industry:
1.Miniaturization
As vehicles become more complex, manufacturers are prioritizing smaller and more efficient components. Both the S-19161A/B and BTM90xx ICs support this trend by offering compact designs that save space without compromising performance.
2. Energy Efficiency
The transition to electric vehicles (EVs) has heightened the need for energy-efficient systems. ABLIC’s IC enables the replacement of multiple NiH batteries with a single lithium-ion battery, reducing weight and improving overall efficiency.
3. Functional Safety
With the rise of autonomous and semi-autonomous vehicles, functional safety has become a critical focus. Infineon’s BTM90xx ICs, with their comprehensive protection features, exemplify the industry’s commitment to building safer systems.
4. Thermal and Environmental Resilience
The ability to operate in extreme conditions is essential for automotive components. ABLIC’s extended temperature range and Infineon’s robust thermal management capabilities ensure reliable performance under challenging conditions.
5. Connectivity and Integration
Modern vehicles rely heavily on interconnected systems. The advanced monitoring and diagnostic capabilities of both ICs facilitate seamless integration into larger automotive architectures.
Conclusion
ABLIC’s S-19161A/B and Infineon’s BTM90xx ICs demonstrate how innovation in integrated circuits is driving progress in the automotive industry. By addressing critical challenges in battery management and motor control, these ICs are enabling manufacturers to build smarter, safer, and more efficient vehicles.
As the industry moves toward 2025, the trends of miniaturization, energy efficiency, and enhanced functional safety will continue to shape the future of automotive electronics. The technologies pioneered by ABLIC and Infineon not only meet the demands of today but also lay the groundwork for the next generation of mobility solutions. For engineers and designers, leveraging these advanced ICs is key to staying competitive in a rapidly evolving landscape.
