PROFET™ Load Guard 12V | Automotive Smart High-Side Switch
First ever 12 V PROFET™ high-side switch offering maximum load flexibility for multiple power distribution use cases and ADAS applications with adjustable overcurrent limitation and capacitive load switching mode
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 PG-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 offers to perform precise module diagnosis with best in class current sense accuracy in smart switches in low current regions (kILIS) and ISO 26262-ready documentation supports the use in safety-related applications.
All in all, the PROFET™ Load Guard is a flexible device to fulfill the needs of upcoming automotive power distribution generations. Especially autonomous driving and advanced driver assistance systems benefit from the adjustable current limitation by protecting sensitive input and output filters of sensors.
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.
With the standard PROFET™ feature set plus the advanced features adjustable overcurrent limitation and capacitive load switching mode, the PROFET™ Load Guard can address new use cases of upcoming power distribution networks: Load supply protection, load control and self-protection, wire protection and power supply protection.
- Load supply protection: PROFET™ Load Guard protects the supply infrastructure connected to the switch output with adjustable overcurrent limitation.
Benefits:- protection of sensitive loads, such as ECUs, avoiding high peak currents
- adjustable overcurrent thresholds according to the load current requirements
- Simplified power over coax (PoC) implementation
- Capacitor charging capability
- Load control and self-protection: PROFET™ Load Guard protects itself and controls the load connected to the device output with PROFET™ basic feature set and capacitive load switching mode.
Benefits:- Capacitive load switching mode allows the device to safely switch big capacitors without the need of oversizing the switch or additional pre-charge circuitry
- Adjustable overcurrent limitation enables configuring the device according to the system needs
- PROFET™ Load Guard offers state-of-the-art diagnostic and protection features
- Wire protection: PROFET™ Load Guard protects and diagnoses the wires in the power distribution system.
Benefits:- Accurate protection of the wires by hardware, independent from microcontroller sampling and control
- Wire harness optimization in terms of cost and weight by protection adjustable to system requirements
- No need for accessibility due to resettable protection
- Power supply protection: PROFET™ Load Guard provides failure isolation from loads towards the power supply
Benefits:- Avoidance of extensive current consumption in a failure event thanks to adjustable overcurrent limitation
- Protection of the local DC/DC power supply against overload
- Ensured stable power supply for loads in normal operation mode
- 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
- PRO-SIL™ ISO 26262-ready for supporting the integrator in evaluation of hardware element acc. to ISO 26262
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
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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 ROCT pin. PROFET™ Load Guard offers limitation capabilities from 0.3 to a maximum of 9.2 A, depending on the RDS(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
