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Infineon Technologies TLF35585QVS02XUMA1
- Part No.:
- TLF35585QVS02XUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
TLF35585QVS02XUMA1.pdf
- Description:
- OPTIREG PMIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,001
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Product details
Overview
TLF35585QVS02 from Infineon is a functional safety-certified PMIC for ASIL D automotive systems, integrating a serial boost-buck pre-regulator (3.0–40 V input), 3.3 V/600 mA MCU main supply (QUC), 5.0 V/200 mA communication rail (QCO), ±1% 5.0 V/150 mA ADC reference (QVR), two 150 mA sensor trackers (QT1/QT2), and 3.3 V/10 mA standby regulator (QST). It operates up to 175°C junction temperature and supports CAN/FlexRay communication power in electric power steering.
For engineers reviewing the TLF35585QVS02 datasheet, TLF35585QVS02 pinout, TLF35585QVS02 application, or TLF35585QVS02 equivalent, key selection criteria include ISO 26262 ASIL D compliance, dual watchdog architecture (window + functional), SPI-based configuration, voltage monitoring of external core supplies, and safe state control with programmable delay for fail-safe microcontroller coordination.
Technical Context
The TLF35585QVS02 implements a cascaded regulation architecture: a high-efficiency serial step-up/step-down pre-regulator feeds three independent low-dropout post-regulators (QUC, QCO, QVR) and two tracker outputs synchronized to QVR. Its supervision subsystem includes a time-based window watchdog and a question-answer functional watchdog, both configurable via 16-bit SPI.
It features dedicated hardware monitoring blocks - independent voltage monitoring with error pin assertion, external core supply enable/control (VEVC), sync-out for clock domain alignment, and two safe state outputs (SS1/SS2) with individually programmable delays - all validated per AEC-Q100 Grade 0 and qualified for 175°C operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 40 V - supports direct battery connection across cold-crank (4.5 V) to load-dump (40 V) transients without external protection. |
| QUC Output | 3.3 V / 600 mA - primary MCU core supply rail with tight regulation for safety-critical microcontrollers. |
| QCO Output | 5.0 V / 200 mA - dedicated communication rail for CAN/FlexRay transceivers requiring stable noise-immune voltage. |
| QVR Reference | 5.0 V ±1% / 150 mA - precision ADC reference with low drift, enabling accurate sensor signal digitization. |
| Operating Junction Temp | −40°C to +175°C - enables placement near high-temperature zones (e.g., engine bay, traction inverter). |
| SPI Interface | 16-bit, full-duplex - provides register-level access to configuration, status, fault reporting, and watchdog control. |
| Functional Safety | ISO 26262 SEooC up to ASIL D - includes safety documentation, FMEDA, and diagnostic coverage reports for system integration. |
Pinout & Package
TLF35585QVS02 is housed in a PG-VQFN-48-79 package (7 mm × 7 mm, 0.5 mm pitch, exposed thermal pad), optimized for automotive thermal and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VVS1 | Pre-regulator Input | Main battery input (3–40 V) feeding serial boost-buck stage; rated to 40 V continuous, 43.5 V transient (10 s). |
| QUC | MCU Main Supply Output | 3.3 V LDO output delivering up to 600 mA to microcontroller core logic and I/O domains. |
| QCO | Communication Supply Output | 5.0 V LDO output powering CAN/FlexRay transceivers; isolated from QUC for noise separation. |
| QVR | Voltage Reference Output | ±1% 5.0 V reference for ADCs and analog comparators; low-noise, low-drift source for precision sensing. |
| QT1 / QT2 | Sensor Tracker Outputs | Two 150 mA tracking regulators following QVR voltage; used for off-board sensor biasing (e.g., pressure, temperature). |
| SS1 / SS2 | Safe State Outputs | Open-drain signals asserting fail-safe states to MCU or external logic; delay programmable via SPI. |
| WDI | Window Watchdog Input | Edge-triggered input for time-based watchdog reset; requires periodic pulse to prevent timeout-induced reset. |
| ERR | Error Pin Input | Active-low input monitoring external fault conditions (e.g., overvoltage, overtemperature); triggers internal error response. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Watchdog Architecture | Independent window watchdog (time-based) and functional watchdog (challenge-response) provide layered fault detection for ASIL D compliance. |
| Configurable Safe State Control | Two programmable safe state outputs (SS1/SS2) with adjustable delay allow staged shutdown or fallback behavior during faults. |
| External Core Supply Enable | VEVC pin controls external switching regulator for MCU core voltage (e.g., 1.3 V), enabling coordinated power sequencing. |
| Sync-Out Signal | SYN pin delivers synchronized clock edge to align timing-critical peripherals (e.g., ADC sampling, PWM generation). |
| Extended Temperature Operation | Validated for −40°C to +175°C junction temperature per AEC-Q100 Grade 0, supporting under-hood deployment. |
Applications
| Electric Power Steering (EPS) | Battery Management System (BMS) |
|---|---|
Use Scenario: Real-time torque assist control with redundant MCU supervision and motor driver gate drive power sequencing. IC Role / Device Role / Timing Role: Primary power manager supplying MCU, CAN interface, and analog front-end; provides safe state signaling on fault detection. Use Value: Enables ASIL D decomposition by delivering independent, monitored rails and deterministic fail-safe responses during steering actuation. | Use Scenario: High-voltage battery cell monitoring and balancing control in 400–800 V EV packs with thermal stress near cooling plates. IC Role / Device Role / Timing Role: Supplies isolated MCU, isolated CAN transceiver, and precision ADC reference for voltage/current sensing; tracks reference for sensor biasing. Use Value: Supports AEC-Q100 Grade 0 qualification and 175°C operation, allowing direct mounting on battery module PCBs without derating. |
| Engine Control Unit (ECU) | Traction Inverter Control |
Use Scenario: Fuel injection and ignition timing control in turbocharged gasoline engines with high ambient under-hood temperatures. IC Role / Device Role / Timing Role: Powers main MCU, communication interfaces, and analog sensors; monitors external core supply and asserts safe state on critical fault. Use Value: Eliminates need for discrete voltage monitors and watchdog ICs, reducing BOM count while meeting ASIL D requirements. | Use Scenario: Gate driver power and isolation supply control in SiC-based traction inverters with fast-switching noise and thermal cycling. IC Role / Device Role / Timing Role: Generates clean, tracked sensor supplies (QT1/QT2) and precise ADC reference (QVR) for current shunt measurement and temperature feedback. Use Value: Reduces measurement error from supply drift, improving torque accuracy and inverter efficiency at high switching frequencies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar functional safety PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLF35584QVS02 | Same package and pinout; lacks QCO 5.0 V rail and QT2 tracker; single tracker (QT1) only. | Not suitable for dual-sensor or CAN+FlexRay dual-communication systems requiring separate 5.0 V rail. | Select when only one sensor tracker and no dedicated 5.0 V comms rail are needed - lower cost, reduced feature set. |
| MAX25201ATPA/VY+ | ASIL B-rated; 3.3 V/500 mA QUC, no QVR reference or trackers; uses I²C instead of SPI. | Limited to ASIL B systems; cannot replace QVR-dependent ADC accuracy or QT1/QT2 sensor biasing. | Choose for cost-sensitive ASIL B designs where SPI interface and precision reference are not required. |
Compared with TLF35584QVS02 and MAX25201ATPA/VY+, the TLF35585QVS02 uniquely delivers ASIL D compliance with dual trackers, 5.0 V QCO, and ±1% QVR - essential for high-integrity sensor fusion and dual-communication automotive ECUs.
Availability
TLF35585QVS02 is available at Aetrix Electronics and suitable for electric power steering, battery management, and traction inverter control requiring stable component supply across extended temperature and safety-critical operating conditions.
Supply support for TLF35585QVS02 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with leadership in functional safety and high-temperature reliability.
The OPTIREG™ PMIC product line targets ASIL D automotive power architectures, delivering integrated, safety-certified regulation and supervision for next-generation domain controllers and electrified powertrain systems.
FAQ
What is the maximum allowable input voltage transient for TLF35585QVS02?
The device supports 40 V continuous input and tolerates 43.5 V transients for up to 10 seconds during its lifetime, provided the voltage rise rate does not exceed 6 V/ms for 60 V events lasting ≤1 hour. These limits are defined in Absolute Maximum Ratings Table 1, Notes 2 and 3.
How does the functional watchdog differ from the window watchdog in TLF35585QVS02?
The window watchdog requires periodic edge-triggered pulses within a defined time window to prevent reset, while the functional watchdog uses a challenge-response protocol: the MCU must read a dynamic value from a specific SPI register and write back a transformed result before timeout. This detects software lockup and memory corruption.
Can TLF35585QVS02 directly power a 1.3 V MCU core supply?
No - TLF35585QVS02 does not integrate a 1.3 V output. It provides VEVC (Enable for External Core Supply) to control an external switching regulator. The device monitors that external rail via VVCI and triggers safe state if out-of-spec, but does not generate the core voltage itself.
Is the QVR 5.0 V reference output capable of driving external ADCs without buffering?
Yes - QVR delivers ±1% accuracy at 150 mA with low noise and drift, and is designed to directly power high-resolution automotive ADCs (e.g., 16-bit SAR or sigma-delta converters) without external op-amp buffering, as confirmed in the "Voltage Reference Supply" section of the datasheet.
TLF35585QVS02XUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- -
- Current - Supply:
- -
- Voltage - Supply:
- 3V ~ 40V
- Operating Temperature:
- -40°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-VQFN-48-79
TLF35585QVS02XUMA1 FAQ
1.How can I place an order for TLF35585QVS02XUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLF35585QVS02XUMA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TLF35585QVS02XUMA1 reliable?
The price and inventory of TLF35585QVS02XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLF35585QVS02XUMA1 is usually 5 days.
3.What payment methods are accepted for TLF35585QVS02XUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLF35585QVS02XUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLF35585QVS02XUMA1?
TLF35585QVS02XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLF35585QVS02XUMA1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TLF35585QVS02XUMA1?
For technical support, including TLF35585QVS02XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLF35585QVS02XUMA1 requirements.
6.How does Aetrix verify that TLF35585QVS02XUMA1 is sourced from the original manufacturer or authorized distributors?
All TLF35585QVS02XUMA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLF35585QVS02XUMA1 meets industry standards.
7.What is the process for return or replacement of TLF35585QVS02XUMA1?
All TLF35585QVS02XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLF35585QVS02XUMA1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLF35585QVS02XUMA1 part is unused and in its original packaging.
Return procedure for TLF35585QVS02XUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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