Blog de la compañía Infineon OPTIREG™ TLF35584 In Stock: 5V Microcontroller Multi-Output System Power Management IC for ASIL-D Safety Applications

As automotive electronic and electrical architectures evolve toward domain-based centralization, safety-critical systems—such as powertrain, chassis control, and ADAS domain controllers—are placing higher demands on the functional safety levels of power supply solutions. Infineon’s OPTIREG™ TLF35584, a multi-output system power management IC (PMIC) designed for safety-critical applications, has become the go-to power supply solution for mainstream automotive MCUs such as the AURIX™ series, thanks to its highly efficient and flexible pre- and post-regulator architecture and integrated safety features. Shenzhen Mingjiada Electronics Co., Ltd. has long supplied the Infineon OPTIREG™ TLF35584 series PMICs, providing customers with genuine, original products, in-stock inventory, and fast delivery services.

One Chip, Multiple Power Supplies: The TLF35584’s Product Positioning

The TLF35584 is a multi-output system power supply that, through a highly efficient and flexible pre-regulator/post-regulator design, provides stable power to 5V or 3.3V microcontrollers (μC), transceivers, and sensors across a wide input voltage range of 3.0V to 40V. Its core architecture consists of serial boost and buck pre-regulators, delivering full performance capabilities with low total power loss.

At the post-regulator level, the TLF35584 provides multiple independent output channels: the μC power supply output supports 5.0 V/600 mA or 3.3 V/600 mA, meeting the power requirements of mainstream automotive-grade MCUs; the reference voltage output is 5.0 V ±1% with a current capability of 150 mA, capable of independently providing a precise reference source for ADCs; the communication power supply (QCO) is rated at 5.0V/200mA, suitable for in-vehicle communication transceivers such as CAN and FlexRay. Additionally, two sensor power trackers (QT1 and QT2) each follow the reference voltage and have a current capacity of 150mA, while the standby regulator provides 5.0V/10mA or 3.3V/10mA of standby power.

Integrated Functional Safety: A Full-Stack Solution from Power Supply to System Monitoring

The core feature that distinguishes the TLF35584 from general-purpose PMICs is its deeply integrated functional safety capabilities. Developed in accordance with the ISO 26262 standard, the chip supports safety levels up to ASIL-D and comes with a safety manual and a safety analysis summary report, significantly reducing the documentation workload for ECU-level safety assessments.

In terms of safety monitoring, the TLF35584 integrates several key features: under-voltage/over-voltage monitoring (UV/OV monitoring) for all power rails uses independent reference sources, effectively detecting common-cause failures; configurable window and functional watchdogs monitor the MCU’s operating status; and error monitoring pins, in conjunction with the safety status controller, provide two safety status signal outputs with programmable delays. In addition, the built-in self-test (BIST) function verifies the operational status of relevant safety mechanisms, ensuring the reliability of the safety mechanisms themselves. The 16-bit SPI interface supports interrupt and reset functions, providing a flexible control and diagnostic channel between the MCU and the PMIC.

Application Scenarios: From Powertrain to ADAS Domain Controllers

The TLF35584 has a wide range of applications and is primarily targeted at automotive electronic systems with stringent functional safety requirements. In the xEV sector, this chip is suitable for core applications such as traction inverters, battery management systems (BMS), DC/DC converters, and on-board chargers (OBC). In the chassis and safety domains, electric power steering (EPS) and braking systems demand extremely high power supply reliability; the TLF35584’s ASIL-D capability meets the safety objectives of such applications.

In ADAS domain controllers and sensor fusion applications, the TLF35584’s multi-output architecture can simultaneously power high-performance MCUs, transceivers, and sensor clusters, simplifying the system’s power tree design. In traditional powertrain applications, engine management and transmission control are also established application areas. This chip has been validated in actual mass-production projects, such as the BMS ECU8 energy control unit developed by Neutron Controls based on the AURIX TC3xx/TC4xx and the TLF35584.

Product Portfolio and Selection Guide

The TLF35584 series offers a variety of package and voltage options to accommodate different design requirements. The QV version uses a PG-VQFN-48 package, suitable for space-constrained applications; the QK version uses a PG-LQFP-64 package, featuring enhanced thermal performance and support for automated optical inspection. In terms of voltage, the VS1 model outputs 5.0 V, compatible with 5 V microcontroller systems; the VS2 model outputs 3.3 V, compatible with 3.3 V microcontroller systems.

The chip operates within a temperature range of -40°C to 150°C and is AEC-Q100 Grade 0 certified, meeting long-term reliability requirements in harsh automotive environments. In terms of operating voltage, the chip supports a wide input range of 3V to 40V, allowing direct connection to automotive battery power without the need for additional front-end protection circuits.

Supply Chain Perspective: Why Choose Mingjiada Electronics

Currently, in the global semiconductor supply chain, lead time pressures for high-current PMICs remain significant, with delivery cycles for some power management ICs exceeding 50 weeks. Against this backdrop, a stable supply of in-stock products has become a key consideration for customers when selecting components.

Established in 1996, Shenzhen Mingjiada Electronics Co., Ltd. is a professional supply chain service provider with nearly three decades of experience in the electronic component distribution sector. The company has established long-term partnerships with over 500 renowned global brands, including Infineon. With a stock inventory of 2 million electronic component part numbers, the company has long supplied the OPTIREG™ PMIC series from Infineon, including the mainstream model TLF35584QKVS1.

Mingjiada Electronics supports both small-batch sample purchases and large-volume order fulfillment, offering one-stop services ranging from product selection support to BOM fulfillment. All chips are guaranteed to be genuine and undergo rigorous quality inspections before being stocked. The company ensures rapid delivery through its multi-location warehousing network in Shenzhen and Hong Kong. For details on the availability of the TLF35584 series or to obtain the latest quotes, please contact the Mingjiada Electronics sales team.

Tags: TLF35584QKVS1, TLF35584QKVS, TLF35584QKV, TLF35584QK, TLF35584Q, TLF35584