PROFET™ Load Guard 12V | Automotive Smart High-Side Switch

PROFET™ Load Guard 12V

The PROFET™ Load Guard portfolio is characterized by the highest design flexibility provided by the possibility to adjust the overcurrent limitation of each device according to the load requirements. This minimizes design-in efforts by setting up only one design, as the current limit can be adapted on demand if load-driving requirements change. Exchanging devices within the PROFET™ Load Guard family is simple, as the single- and dual-channel devices in the established TSDSO-14 exposed pad package are pin- and function-compatible. With the integrated capacitive load switching mode, a broad range of capacitive loads can be charged in the safe operating area. Furthermore, the family performs precise module diagnostics with best-in-class current sense accuracy in smart switches in low current regions (kILIS). PRO-SIL™ ISO 26262-ready documentation supports the use in safety-related applications. 

PROFET™ Load Guard is a flexible device that benefits upcoming automotive power distribution generations. Adjustable current limitation protects sensitive sensor filters, especially for autonomous driving and advanced driver assistance systems.

Benefit from PROFET™ Load Guard 12V in automotive applications

PROFET™ Load Guard is a versatile device with a broad range of use cases. It offers load supply protection, load control, self-protection, power supply protection, and wire protection. Its best-in-class kILIS performance enables precise module diagnostics for low-current regions. The device also features a capacitive load switching mode that can handle a broad range of capacitive loads; for example, in zone modules of modern power distribution or in display modules. Additionally, the adjustable overcurrent limitation provides protection for sensitive input filters of various ADAS applications and USB Type-C. PROFET™ Load Guard offers load and design flexibility thanks to its pin and footprint compatibility with the whole family and the PROFET™ +2 12 V portfolio. The device is PRO-SIL™ ISO 26262-ready, supporting integrators in evaluating the hardware element according to ISO 26262. Overall, PROFET™ Load Guard is a reliable solution for modern automotive power distribution that meets the demands of autonomous driving and advanced driver assistance systems.

ISO 26262 - Dependable electronics based on Functional Safety (FuSa)

With Infineon’s PROFET™ Load Guard 12 V, designers are well prepared for today’s and upcoming challenges of the automotive electronic/electrical (E/E) architectures which demand components that meet the requirements for PRO-SIL™ ISO 26262-compliant and PRO-SIL™ ISO 26262-ready classifications used in fail-safe and fail-operational power distribution systems. 

To get access to the PRO-SIL™ ISO 26262 documentation, please register for myinfineon.com with your company email address. Get in touch with your respective distribution or sales contact to request the elevation of your myInfineon account to partner status. This is required for access to our MyICP portal for download.

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ISO 26262 - Functional Safety (FuSa)

PROFET™ Load Guard design support

Infineon offers a range of design-in materials, which include application notes, evaluation boards, PCB design data, simulation models, and online simulations available on each product page in the "Design Support" section. In addition, we offer a dedicated tool suite for smart power switches and gate driver ICs for automotive power distribution.

Infineon smart power switches and gate driver tool suite supports system architects and hardware designers from idea to realization. This suite allows the user to select the right smart power switch or gate driver IC for a specific load using one of the “Finder & Selection” tools. Together with the different “Simulation & Modeling” tools, various application scenarios can be simulated for the respective product. The results can be documented in report tool and verified with the “Configuration” tools plus the corresponding evaluation boards.

Facing a design challenge? The Infineon Developer Community is available 24x7 for you to connect and network with engineers across the globe. Get help from Infineon support engineers and expert members to solve your design challenges anytime and from anywhere.

Tool suite

PROFET™ Load Guard is equipped with the advanced feature adjustable overcurrent limitation to protect the whole system, from loads to PCB traces.

Once the threshold is reached, the current will be limited permanently to the set value until the implemented overtemperature protection automatically protects the device from destruction. The flexible range of the adjustable overcurrent limitation allows setting the threshold according to system requirements and avoids high peak currents to protect sensitive loads such as ECUs.

The overcurrent limitation level can be adjusted using an external pull-down resistor, connected to the R_OCT pin.  PROFET™ Load Guard offers limitation capabilities from 0.3 to a maximum of 9.2 A, depending on the R_DS(on) of the device. This approach reduces the number of external components and significantly saves PCB space in comparison to a discrete circuitry option. In addition, the adjustability ensures high design flexibility, as the product can be chosen for several applications with different current capabilities without the need for high re-design effort.

In order to charge big capacitors, PROFET Load Guard is equipped with capacitive load switching mode. This mode is activated via a 30 kHz signal with a duty cycle of 50% applied to the input pin. Thus, the dynamic overtemperature protection is set to a lower value and a continuous restart is activated. This enables the capacitor to be charged through pumping in the safe operating area, reduced current spikes and results in higher system robustness.

With the capacitive load switching mode no discrete pre-charge circuitry is needed, which reduces external components and PCB area, and there is no longer need for an oversizing of the switch to handle high peak currents, occurring during switch on of big capacitors.

A very low ohmic DMOS power stage, combined with state-of-the-art protection and diagnostic features and advanced features like adjustable overcurrent limitation and capacitive load switching mode, make the PROFET™ Load Guard a very flexible device for all kind of resistive, inductive and especially capacitive loads, such as ECUs.

Find out why the PROFET™ Load Guard is such a flexible device, supporting ADAS as well as intelligent power distribution loads while addressing a broad range of use cases.

Infineon Developer Community is available 24x7 for you to connect and network with engineers across the globe. Get help from Infineon support engineers, and expert members to solve your design challenges anytime, from anywhere, in any topic, and in your preferred language.

Ask the Community

PROFET™ Load Guard is equipped with the advanced feature adjustable overcurrent limitation to protect the whole system, from loads to PCB traces.

Once the threshold is reached, the current will be limited permanently to the set value until the implemented overtemperature protection automatically protects the device from destruction. The flexible range of the adjustable overcurrent limitation allows setting the threshold according to system requirements and avoids high peak currents to protect sensitive loads such as ECUs.

The overcurrent limitation level can be adjusted using an external pull-down resistor, connected to the R_OCT pin.  PROFET™ Load Guard offers limitation capabilities from 0.3 to a maximum of 9.2 A, depending on the R_DS(on) of the device. This approach reduces the number of external components and significantly saves PCB space in comparison to a discrete circuitry option. In addition, the adjustability ensures high design flexibility, as the product can be chosen for several applications with different current capabilities without the need for high re-design effort.

In order to charge big capacitors, PROFET Load Guard is equipped with capacitive load switching mode. This mode is activated via a 30 kHz signal with a duty cycle of 50% applied to the input pin. Thus, the dynamic overtemperature protection is set to a lower value and a continuous restart is activated. This enables the capacitor to be charged through pumping in the safe operating area, reduced current spikes and results in higher system robustness.

With the capacitive load switching mode no discrete pre-charge circuitry is needed, which reduces external components and PCB area, and there is no longer need for an oversizing of the switch to handle high peak currents, occurring during switch on of big capacitors.

• Infineon ISO 26262-ready products are developed acc. to Iinfineons sophisticated Automotive Development and Quality Standards
• For ISO 26262-ready products additional functional safety analysis will be provided
• ISO 26262-ready enables our customers to use Infineons (QM) products in safety related applications
• A Safety Application Note can be delivered to serve as building block for customers’ system level safety concept
• When integrating ISO 26262-ready devices in safety-related systems, the independence between such elements and the safety goals / safety requirements have to be assessed by the customer, i.e. the independence between the QM functions of these elements and the application safety-related requirements
• The safety application note is available for registered Infineon partners

Access to ISO 26262-ready documentation:

• Please register for myinfineon.com with your company e-mail address
• Please get in touch with your respective Distribution or Sales contact to request the elevation of your myInfineon account to partner status; this is required for access to our MyICP portal

PROFET™ Load Guard is part of Infineon’s innovative smart high-side switch portfolio, especially designed for power distribution and ADAS applications. The family consists of one- and two-channel devices in PG-TSDSO-14 exposed pad package and provides pin and function compatibility within the whole family and high compatibility to the PROFET™ +2 12V family.

As a PROFET™ (PROtected MOSFET) device, the PROFET™ Load Guard is equipped with state-of-the-art protection and diagnostic features. In addition to that, adjustable overcurrent limitation and capacitive load switching mode bring highest flexibility for all kind of resistive, inductive and growing numbers of capacitive loads and support to address several use cases in future E/E architectures. The whole family is AEC-Q100 qualified and ISO 26262-ready documentation supports functional safety.

A very low ohmic DMOS power stage, combined with state-of-the-art protection and diagnostic features and advanced features like adjustable overcurrent limitation and capacitive load switching mode, make the PROFET™ Load Guard a very flexible device for all kind of resistive, inductive and especially capacitive loads, such as ECUs.

By choosing the PROFET™ Load Guard you can:

• Choose PROFET™ Load Guard for a broad range of use cases: load supply protection, load control and self-protection, power supply protection and wire protection
• Perform precise module diagnosis with best in class kILIS performance in smart high-side switches for low current regions
• Cover a broad range of capacitive loads with ONE device with capacitive load switching mode
• Protect sensitive input filters of various ADAS applications with one PROFET™ Load Guard device using adjustable overcurrent limitation
• Load and design flexibility due to pin and footprint compatibility within the whole family and to the PROFET™ +2 12V portfolio
• Use PROFET™ Load Guard in safety-related applications, enabled by ISO ISO 26262-ready documentation available for registered partners
• Benefit from SMART7 technology with very low power dissipation

The PROFET™ Load Guard offers accurate diagnostic via an analog sense current provided by an external current sense pin. It is used to provide feedback to the microcontroller to monitor the application status as normal, overload, open load, short-circuit to ground, short-circuit to battery condition, protective switch off (overtemperature shutdown) and protect the load and the wire harness and monitor the output current for the purpose of controlling the output power.

Various support materials are offered by Infineon:

• Data Sheets
• Evaluation boards 
• Arduino shield
• Config Wizard for IPD 
• Application Notes
• User Manual
• Videos
• Simulations models