What is VNI4140KTR-32? Key Features Explained

sales@keepboomingtech.com

·January 2, 2025

·12 min read

What is VNI4140KTR-32? Key Features Explained

The VNI4140KTR-32, also referred to as VNI4140KTR-32,VNI4140K, is a monolithic quad high-side smart power solid-state relay that delivers cutting-edge solutions for driving resistive, capacitive, or inductive loads. Its innovative design ensures exceptional precision and reliability, making it a vital component in modern power management systems. Solid-state relays like the VNI4140KTR-32 are increasingly popular due to the growing demand for electric vehicles, smart home devices, and IoT-enabled technologies. The automotive industry, fueled by the rise in electric vehicle production and stringent low-emission standards, stands out as the fastest-growing application area. This underscores the VNI4140KTR-32's pivotal role in promoting energy-efficient and sustainable advancements.

Key Takeaways

The VNI4140KTR-32 is a versatile quad high-side smart power solid-state relay, capable of managing resistive, capacitive, or inductive loads, making it ideal for various applications.
With built-in safety features like overcurrent protection and thermal shutdown, the VNI4140KTR-32 ensures reliable operation and minimizes risks in power management systems.
Its compact PowerSSO-24 packaging simplifies integration into existing systems, enhancing thermal performance and making it suitable for space-constrained applications.
Engineers can leverage the VNI4140KTR-32's diagnostic feedback feature to monitor system performance in real-time, allowing for proactive troubleshooting and reduced downtime.
The device's energy-efficient design, characterized by a low RDS(on) value, supports sustainable practices in industries such as automotive, industrial automation, and consumer electronics.

What is the VNI4140KTR-32?

Overview of the VNI4140KTR-32

The VNI4140KTR-32 is a quad high-side smart power solid-state relay designed by STMicroelectronics. It features four independent output channels, each capable of managing resistive, capacitive, or inductive loads. With an output current capacity of 1A per channel and a supply voltage range of 10.5V to 36V, it offers versatility for various applications. The device operates within a temperature range of -40°C to 125°C, ensuring reliability in extreme environments. Packaged in a compact PowerSSO-24 format, it meets RoHS compliance standards, making it environmentally friendly. Key protection features include non-dissipative overcurrent protection, thermal shutdown, and open-load detection, which enhance its durability and safety.

Purpose and Functionality

The VNI4140KTR-32 serves as a high-side load driver, enabling precise control of multiple loads simultaneously. Its quad-channel design simplifies system architecture by integrating four independent drivers into a single device. The N-channel output type ensures efficient conductivity, while the integrated gate drive reduces the complexity of external circuitry. Built-in diagnostics, such as a status flag, provide real-time feedback on system performance. The device also incorporates active current limitation and automatic channel restart, which prevent power supply disruptions during overload conditions. These features make it an ideal choice for applications requiring robust and reliable load management.

Importance in Power Management Systems

Power management systems demand components that ensure efficiency, safety, and reliability. The VNI4140KTR-32 addresses these needs by offering advanced protection mechanisms, including overcurrent and thermal shutdown features. Its ability to handle varying input voltages and currents makes it suitable for dynamic environments. The device's built-in diagnostics enable quick identification and resolution of faults, reducing downtime. Additionally, its compact design and RoHS compliance align with modern trends toward miniaturization and sustainability. By integrating the VNI4140KTR-32, engineers can enhance the performance and safety of power management systems across industries.

Key Features of the VNI4140KTR-32

Technical Specifications

Voltage and Current Ratings

The VNI4140KTR-32 offers robust voltage and current handling capabilities, making it suitable for a wide range of applications. Its output voltage ranges from 1.2V to 19V, while the maximum output current reaches up to 5A. This flexibility allows engineers to deploy the device in systems requiring precise load control. The table below highlights its critical specifications:

Specification	Symbol	Min	Max	Unit
Output Voltage	VOUT	1.2	19	V
Output Current	IOUT	-	5	A
Switching Frequency	fSW	-	600	kHz
Efficiency	η	-	85	%
Quiescent Current	IQ	-	100	μA
Shutdown Current	ISD	-	1	μA
Operating Temperature	TOPR	-40	125	°C
Storage Temperature	TSTG	-65	150	°C

These specifications ensure the VNI4140KTR-32 meets the demands of modern power management systems.

RDS(on) and Efficiency

The VNI4140KTR-32 features a low RDS(on) value, which minimizes power losses during operation. This efficiency reduces heat generation, enhancing the device's thermal management and reliability. By maintaining low power dissipation, the VNI4140KTR-32 supports energy-efficient designs, making it a preferred choice for engineers.

Performance Capabilities

Fault Protection and Safety Features

The VNI4140KTR-32 incorporates advanced fault protection mechanisms to ensure operational safety and reliability. Key features include:

Active channel current limitation to prevent overload damage.
Thermal shutdown to safeguard against overheating.
Automatic restart for continuous operation after cooling.
Short-circuit protection for each channel to prevent damage.
Overvoltage protection to handle voltage spikes effectively.

The table below summarizes its fault protection capabilities:

Feature	Description
Active channel current limitation	Protects against overload by limiting the current for each channel.
Thermal shutdown	Automatically turns off the channel when overheating occurs, ensuring device safety.
Automatic restart	Channels restart automatically after cooling down, maintaining operational continuity.
Per channel short-circuit protection	Prevents damage from short circuits on individual channels.
Overvoltage protection (VCC clamping)	Protects against voltage spikes by clamping excess voltage.
Compliance with IEC standards	Meets IEC61131-2, IEC61000-4-4, and IEC61000-4-5 for safety and performance.

These features make the VNI4140KTR-32 a reliable component for critical applications.

Thermal Management

The VNI4140KTR-32 excels in thermal management through features like active current limitation and thermal shutdown for each channel. Automatic channel restart after cooling ensures uninterrupted operation. Additionally, the STATUSX output pins provide real-time feedback on overtemperature conditions, enabling proactive system monitoring.

Unique Attributes

Compact PowerSSO-24 Packaging

The VNI4140KTR-32 comes in a compact PowerSSO-24 package, which simplifies integration into existing systems. Its 24-pin configuration offers ample connectivity options, while the exposed bottom pad design enhances thermal performance. This packaging ensures efficient heat dissipation and easy PCB assembly, making it ideal for space-constrained applications.

Integration with VIPower Technology

The integration of VIPower Technology sets the VNI4140KTR-32 apart from other solid-state relays. This technology enhances reliability through robust fault protection features and simplifies circuit integration by eliminating the need for an external supply voltage. The table below highlights its advantages:

Advantage	Description
Enhanced reliability	Robust fault protection features decrease risk of damage under abnormal conditions.
Simplified circuit integration	No external supply voltage required, simplifying circuit integration.
Robust fault protection features	Ensures performance stability under extreme conditions.

These attributes make the VNI4140KTR-32 a standout choice for engineers seeking efficiency and reliability.

Applications of the VNI4140KTR-32

Industrial Applications

Numerical Control Machines

The VNI4140KTR-32 plays a critical role in numerical control (CNC) machines by managing motors, solenoids, and actuators. Its quad-channel design simplifies the control of multiple loads, ensuring precise operation. The integrated protection features, such as overcurrent and thermal shutdown, enhance the reliability of CNC systems. These attributes make it an essential component for achieving high precision and efficiency in industrial manufacturing.

Automation Systems

Automation systems benefit significantly from the VNI4140KTR-32's advanced capabilities. Its high-side driver and control logic ensure reliable operation in motor control, PLC outputs, and process control. The robust output current capacity of 1A per channel supports efficient load management. The wide supply voltage range of 10.5V to 36V increases versatility, while integral protection features improve system reliability. These characteristics make it ideal for industrial automation applications.

Consumer Electronics

Smart Home Devices

The VNI4140KTR-32 enhances the functionality of smart home devices, including washing machines and dishwashers. It controls low-power actuators with precision, ensuring smooth operation. Additionally, its fault protection mechanisms safeguard these devices from potential damage, improving their durability. This makes it a valuable component in modern home automation systems.

Power Supply Units

Power supply units in consumer electronics rely on the VNI4140KTR-32 for efficient power management. Its high-side load driver, combined with VIPower technology, ensures reliable performance. The quad-channel output allows the management of multiple loads simultaneously. The device operates within a voltage range of 10.5V to 36V, providing flexibility for various applications. The table below highlights its key specifications:

Specification	Value
Output Voltage VOUT	1.2 - 19 V
Output Current IOUT	4.5 A
Switching Frequency fSW	600 kHz
Efficiency η	85 %
Quiescent Current IQ	100 μA
Shutdown Current ISD	1 μA
Operating Temperature TOPR	-40 - 125 °C
Storage Temperature TSTG	-65 - 150 °C
Thermal Shutdown TSD	160 °C

These features ensure the VNI4140KTR-32 delivers reliable and efficient performance in power supply units.

Automotive Applications

Electric Vehicles

The VNI4140KTR-32 supports electric vehicles by providing reliable load management and protection. Its output current capacity of 1A and supply voltage range of 10.5V to 36V make it suitable for various automotive systems. The device's compliance with RoHS standards and its robust protection features, such as thermal shutdown and open-load detection, enhance its reliability. The table below summarizes its benefits for electric vehicles:

Feature	Description
Output Current Capacity	1A
Supply Voltage Range	10.5V to 36V
Operating Temperature Range	-40°C to 125°C
Protection Features	Non-dissipative overcurrent protection, thermal shutdown, open-load detection
Compliance	RoHS compliant

Battery Management Systems

The VNI4140KTR-32 improves battery management systems by enhancing power management reliability and efficiency. Its integrated high-side driver capabilities ensure optimal battery performance and longevity. The device's protection mechanisms, such as overcurrent and thermal shutdown, safeguard the system from potential faults. These features make it a critical component in modern automotive battery management systems.

Advantages of Using the VNI4140KTR-32

Enhanced Efficiency and Reliability

The VNI4140KTR-32 delivers exceptional efficiency and reliability, making it a preferred choice for engineers. Its low RDS(on) value minimizes power losses, ensuring optimal energy utilization. This feature reduces heat generation, which enhances the device's thermal performance and extends its operational lifespan. Built-in fault protection mechanisms, such as thermal shutdown and overcurrent protection, safeguard the system from potential damage. These features ensure uninterrupted operation, even in demanding environments. The device's ability to handle varying input voltages and currents further contributes to its reliability, making it suitable for dynamic applications.

Cost-Effectiveness

The VNI4140KTR-32 offers a cost-effective solution for power management and control systems. Its quad-channel design integrates four independent drivers into a single compact package, reducing the need for additional components. This integration simplifies system architecture and lowers overall production costs. The device's high efficiency also reduces energy consumption, leading to long-term savings. Additionally, its compliance with RoHS standards ensures environmental sustainability, which aligns with modern industry requirements. These attributes make it an economical choice for both industrial and consumer applications.

Scalability for Various Projects

The VNI4140KTR-32 provides scalability, making it adaptable to a wide range of projects and applications. Its robust output current capacity of 1A per channel and wide supply voltage range of 10.5V to 36V allow it to support diverse system requirements. Integral protection features, including non-dissipative overcurrent protection, thermal shutdown, and open-load detection, enhance system reliability. These capabilities enable the device to perform consistently across different environments and use cases. Engineers can confidently deploy the VNI4140KTR-32 in projects ranging from industrial automation to automotive systems, knowing it will deliver reliable performance.

Advanced Safety Features

The VNI4140KTR-32 incorporates advanced safety features that enhance its reliability and ensure secure operation in diverse applications. These features protect both the device and the systems it powers, making it a dependable choice for engineers.

One of the key safety mechanisms is overcurrent protection, which safeguards the device during varying load conditions. This feature limits excessive current flow, preventing potential damage to the relay and connected components. Another critical feature is thermal shutdown, which activates when the device reaches unsafe temperature levels. This mechanism halts operations temporarily, allowing the system to cool down and avoid permanent damage.

The VNI4140KTR-32 also provides diagnostic feedback, enabling users to monitor system performance in real time. This feature simplifies troubleshooting by identifying issues quickly, reducing downtime and maintenance costs. Engineers can rely on this feedback to ensure optimal system functionality.

The table below highlights the advanced safety features and their corresponding benefits:

Feature	Benefit
Overcurrent protection	Ensures safe operation under varying load conditions.
Thermal shutdown	Protects the device from overheating.
Diagnostic feedback	Allows for quick identification of issues.

These safety features align with modern industry standards, ensuring the VNI4140KTR-32 meets the demands of critical applications. By integrating these mechanisms, the device minimizes risks and enhances operational stability. This makes it a valuable component for systems requiring high reliability and safety.

Tip: Engineers can leverage the diagnostic feedback feature to proactively address potential issues, ensuring uninterrupted system performance.

The VNI4140KTR-32's robust safety design demonstrates its commitment to delivering secure and efficient solutions for power management and control systems.

The VNI4140KTR-32 plays a pivotal role in modern electronics by combining efficiency, reliability, and versatility. Its advanced features, such as non-dissipative overcurrent protection, thermal shutdown, and open-load detection, ensure robust performance across diverse applications. From automotive systems like lighting control and HVAC to industrial automation and consumer electronics, this device adapts seamlessly to various environments. Its compact design, wide operating temperature range, and RoHS compliance further highlight its suitability for sustainable and space-constrained systems. Engineers rely on the VNI4140KTR-32 for its ability to enhance power management systems with precision and safety, making it a standout component in its category.

What is the primary function of the VNI4140KTR-32?

The VNI4140KTR-32 acts as a quad high-side smart power solid-state relay. It drives independent resistive, capacitive, or inductive loads with precision. Its advanced features ensure efficient load management and protection in various applications.

How does the VNI4140KTR-32 enhance system safety?

The device includes overcurrent protection, thermal shutdown, and short-circuit protection. These features safeguard the system from faults and overheating. Diagnostic feedback allows engineers to monitor performance and address issues proactively.

In which industries is the VNI4140KTR-32 commonly used?

The VNI4140KTR-32 finds applications in industrial automation, consumer electronics, and automotive systems. It supports CNC machines, smart home devices, electric vehicles, and battery management systems.

What makes the VNI4140KTR-32 energy-efficient?

Its low RDS(on) value minimizes power losses, reducing heat generation. This efficiency supports energy-saving designs, making it ideal for systems requiring reliable and sustainable power management.

Can the VNI4140KTR-32 operate in extreme environments?

Yes, the VNI4140KTR-32 operates within a temperature range of -40°C to 125°C. Its robust design ensures reliable performance in harsh conditions, making it suitable for industrial and automotive applications.

Note: For detailed specifications, refer to the technical datasheet provided by STMicroelectronics.