PROFET™ Load Guard 12 V |汽车智能高边开关
PROFET™ 高边开关，具有可调过流限制和容性负载切换模式，适用于 12 V ADAS 和电力分配系统
PROFET™ load guard系列产品的特点是具有最高的设计灵活性，可以根据负载要求调整每个器件的过流限制。 如果负载电流要求发生变化，只需要调节相应的电流限制，这最大限度地减少了设计工作在PROFET™ Load Guard系列中进行器件替代非常简单，因为成熟的 TSDSO-14 裸露焊盘封装中的单通道和双通道器件引脚和功能兼容。 通过集成的容性负载开关模式，可在安全工作区对各种容性负载充电。 此外，该系列可在低电流区域以智能开关产品中一流的电流检测精度进行精确的模块诊断（kILIS） 。 PRO-SIL™ ISO 26262-ready 文档支持在安全相关应用中使用。
PROFET™ load guard是一种灵活的设备，适用于即将到来的汽车电力分配系统。 可调电流限制可保护敏感的传感器滤波器，特别是对于自动驾驶和高级的驾驶员辅助系统。
PROFET™ Load Guard 12 V应用:
PROFET™ Load Guard 是一种具有广泛用例的多功能设备。 它提供负载保护、负载控制、自我保护、电源保护和电线保护。 他同系列最佳的 KiLiS 性能可实现对低电流区域精确的模块诊断。 该器件还具有容性负载开关模式，可以驱动各种容性负载；例如，在现代电力分配系统或显示模块中。 此外，可调过流限制为各种 ADAS 应用和 USBType C 的脆弱输入滤波器提供保护。PROFET™ Load Guard的引脚和占位面积与自身系列和 PROFET™™ +2 12V 产品系列兼容，因此有负载和设计上的灵活性。 该器件是PRO-SIL™ ISO 26262-ready等级，支持ISO-26262的硬件评估，减少了集成商的工作量。 总体而言，PROFET™ Load Guard是现代汽车电力分配系统的可靠解决方案，可满足自动驾驶和高级驾驶员辅助系统的需求。
PRO-SIL™ ISO 26262
借助 Infineon® 的 Load Guard 12 V器件，设计人员为当今和即将到来的汽车电子/电气 （E/E） 架构挑战做好了充分准备，这些架构需要满足 PRO-SIL™ ISO 26262-compliant 和PRO-SIL™ ISO 26262-ready 等级要求的组件，这些安全等级用于故障安全，也可用于故障操作的电力分配系统。 要访问 PRO-SIL™ ISO 26262 文档，请使用您公司的电子邮件地址注册 myinfineon.com。 请联系相应的分销商或销售联系人，申请将您的 MyInfineon 账户提升为合作伙伴身份。 这是访问我们的 myICP 门户网站进行下载所必需的。
要访问 PRO-SIL™ ISO 26262 文档，请使用您公司的电子邮件地址注册 myinfineon.com。 请联系相应的分销商或销售联系人，申请将您的 MyInfineon 账户提升为合作伙伴身份。 这是访问我们的 myICP 门户网站进行下载所必需的。
设计支持
Infineon 提供一系列设计资料，包括应用笔记、评估板、PCB设计数据、仿真模型和在线仿真工具，可在每个产品页面上“设计支持”部分的找到。此外，我们还为汽车电力分配系统的智能功率开关和栅极驱动IC提供专用工具套件。
Infineon®的智能功率开关和栅极驱动工具套件支持系统架构师和硬件设计人员从构思到实现。 该套件允许用户使用“查找和选择”工具之一为特定负载选择正确的智能功率开关或栅极驱动IC。 与不同的“模拟和建模”工具一起， 可以为相应的产品模拟各种应用场景。 结果可以记录在报告工具中，并使用“配置”工具以及相应的评估板进行验证。
面临设计挑战？ 英飞凌开发人员社区全天候为您提供服务，帮助您与全球各地的工程师建立联系和网络。从 Infineon® 支持工程师和专家成员那里获得帮助，随时随地解决您的设计挑战。
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
