TLF35584QVHS2XUMA1 - ASIL-D PMIC | Infineon | OPTIREG
MPN： TLF35584QVHS2XUMA1 ✓ 啟用中TLF35584QVHS2XUMA1 概覽
An automotive safety PMIC is a highly integrated DC/DC and LDO regulator system designed to deliver deterministic, monitored power rails to safety-critical microcontrollers. PMICs belong to the broader power-management semiconductor category, alongside discrete DC-DC converters, LDOs, and battery management ICs. The TLF35584 family specifically targets ISO 26262 ASIL-D functional safety requirements, embedding window watchdog, error pin monitoring, fail-safe output state machine, and configurable reset behavior.
Key features include a primary step-down (buck) regulator for the microcontroller core, two auxiliary buck converters, a 5 V / 3.3 V LDO, a tracker/supply for off-board sensors, an SPI/parallel configuration interface, independent safety state machine, ABIST (logic BIST), and LBIST (ADC BIST) support, plus a dedicated error output to the host MCU. The wide 3.0 V to 40 V input range tolerates cranking transients and load-dump events on the automotive 12 V bus.
Architecturally the device combines synchronous buck converters, low-dropout regulators, and an integrated spread-spectrum oscillator to minimize EMI, while dedicated safety logic supervises undervoltage, overvoltage, watchdog timing, and thermal conditions. The exposed thermal pad and Grade 0 qualification allow direct placement near the microcontroller in safety-critical ECUs without secondary heatsinking.
Typical applications include AURIX TC3xx safety microcontrollers in electric power steering (EPS), airbag ECUs, ADAS domain controllers, brake controllers, and electrified powertrain ECUs. For multi-rail safety systems, the TLF35584 simplifies board design by replacing four to six discrete regulators and external supervisors with a single ASIL-D-capable IC.
When designing with this device, follow Infineon's recommended input bulk/ceramic capacitor network, observe SPI pull-up conventions, and verify the fail-safe state machine configuration with the TLF35584 safety manual. The error output pin must be routed to a host MCU interrupt for ASIL-D compliance.
直接替換替代品，適用於 TLF35584QVHS2XUMA1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TLF35584QVHS2XUMA1 （相同外形與佔位） — 差異在於 Package, AEC-Q100 Qualification, Product Type.
TLF35584QVHS1
✅ 直接替換📋 參考替代品（不在目錄中）
TLF35584QVHS2
✅ 直接替換📋 參考替代品（不在目錄中）
TLE92633BQXXUMA2
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TLE9180D32QKXUMA1
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TLF35584QVHS2XUMA1 最大額定值與電氣特性
| Product Type | Multi-rail Automotive Safety PMIC (OPTIREG) |
| Input Voltage Range (operating) | 3.0 V to 40 V |
| 輸出配置 | 8 regulated outputs |
| Functional Safety Level | ISO 26262 ASIL-D (system-capable) |
| 封裝 | PG-VQFN-48 (7 mm x 7 mm) with exposed thermal pad |
| 工作接面溫度 | -40 °C to +175 °C (Grade 0 automotive) |
| 腳位數 | 48 |
| 安裝類型 | Surface Mount |
| Configuration Interface | SPI / parallel |
| Integrated LDO Output | 3.3 V / 5 V selectable |
| Safety Features | Window watchdog, error pin, fail-safe state machine, ABIST, LBIST |
| RoHS 狀態 | Compliant |
| AEC-Q100 Qualification | Qualified (Grade 0) |
| Primary Application | Automotive safety microcontrollers (e.g., AURIX TC3xx) |
TLF35584QVHS2XUMA1 pg-vqfn-48 (7 mm x 7 mm) with exposed thermal pad 腳位配置指南
TLF35584QVHS2XUMA1（pg-vqfn-48 (7 mm x 7 mm) with exposed thermal pad 封裝）的腳位配置。 此功率元件具有閘極、汲極與源極端子。對於非極性封裝，請參閱製造商資料表以取得確切的第 1 腳方向與佈局詳細資訊。常見應用包括電源設計、馬達驅動與負載切換。
無詳細腳位定義資料： TLF35584QVHS2XUMA1.
請參閱 資料表 以查看完整腳位配置。
典型應用
TLF35584QVHS2XUMA1 適用於 6 應用s: Electric Power Steering (EPS) ECU, Airbag / Restraint Control Unit, ADAS Domain Controller, Brake Control (ABS/ESC) ECU, Electrified Powertrain Inverter ECU, Battery Management System (BMS) Master Controller.
Electric Power Steering (EPS) ECU
The TLF35584QVHS2XUMA1 is purpose-built to power AURIX TC3xx microcontrollers in electric power steering ECUs, where ISO 26262 ASIL-D is mandatory. Its 3.0 V to 40 V input tolerates load-dump and cranking transients on the 12 V vehicle bus, while the eight regulated rails deliver the core 1.3 V, 3.3 V, and 5 V supplies needed by the MCU, CAN transceivers, and sensor front-ends. The integrated window watchdog and fail-safe state machine meet ASIL-D decomposition requirements without an external supervisor, reducing PCB area in the steering column module.
推薦
Airbag / Restraint Control Unit
Airbag ECUs demand the highest functional-safety integrity (ASIL-D) and a deterministic supply rail. The TLF35584QVHS2XUMA1 delivers this with its integrated ABIST/LBIST self-tests, window watchdog, and dedicated error pin routed to the AURIX MCU interrupt. With Grade 0 / +175 °C junction temperature rating, it survives under-hood thermal stress without secondary heatsinking. Compared to a discrete regulator + supervisor solution, the TLF35584 cuts BOM count, simplifies safety case documentation, and shrinks the PCB footprint for the squib driver area.
推薦
ADAS Domain Controller
Centralized ADAS domain controllers based on AURIX TC3xx require multi-rail power with deterministic sequencing under all fault conditions. The TLF35584QVHS2XUMA1's eight configurable rails and SPI-controlled sequence give board designers full flexibility to power radar MCUs, camera SoCs, and Lidar processing nodes. The 40 V input tolerance handles transients on long wire harnesses, while the fail-safe state machine autonomously transitions the rails to a safe state if the host MCU stops servicing the watchdog - critical for fail-operational ADAS architectures targeting ASIL-D.
推薦
Brake Control (ABS/ESC) ECU
Anti-lock braking and electronic stability control ECUs operate in the harshest automotive environment, requiring ASIL-D power delivery and Grade 0 thermal performance. The TLF35584QVHS2XUMA1 powers the AURIX TC3xx MCU that runs the vehicle dynamics control loop, with the integrated window watchdog providing the dual-channel supervision required by ISO 26262. The exposed-pad PG-VQFN-48 package dissipates the device's full-load heat into the ECU housing copper, eliminating the need for a discrete heatsink in the brake module.
推薦
Electrified Powertrain Inverter ECU
In battery-electric and hybrid vehicles, the traction inverter ECU combines AURIX TC3xx with IGBT/SiC gate drivers and needs an ASIL-D multi-rail supply. The TLF35584QVHS2XUMA1 supplies the MCU core, gate-driver logic, and CAN-FD transceiver, while its SPI interface allows the MCU to dynamically enable/disable rails for low-voltage standby. With 3.0 V to 40 V input tolerance, the PMIC operates directly from the 12 V auxiliary battery, simplifying the HV-to-LV DC-DC stage and supporting functional-safety requirements for ASIL-D inverter control.
推薦
Battery Management System (BMS) Master Controller
In 400 V and 800 V EV battery packs, the BMS master controller uses AURIX TC3xx to manage cell balancing, state-of-charge, and isolation monitoring. The TLF35584QVHS2XUMA1 provides the deterministic multi-rail supply and ASIL-D safety supervision required by ISO 26262 for the battery pack controller. Its wide 3.0 V to 40 V input range allows direct connection to the 12 V low-voltage bus of the pack, and the fail-safe state machine guarantees the controller enters a safe state if the watchdog is not serviced.
推薦
推薦產品摘要
工程參考資料，適用於 TLF35584QVHS2XUMA1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TLF35584QVHS1 | TLF35584QVHS2 | TLE92633BQXXUMA2 | TLE9180D32QKXUMA1 |
|---|---|---|---|---|---|
| Package | PG-VQFN-48 (7x7 mm) | PG-VQFN-48 (same) | PG-VQFN-48 (same) | VQFN-48 family (different pinout) | VQFN-48 family (different pinout) |
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon |
| Functional Safety Level | ASIL-D | ASIL-D | ASIL-D | ASIL-B | ASIL-D (gate driver PMIC) |
| Input Voltage Range | 3.0 V to 40 V | 3.0 V to 40 V | 3.0 V to 40 V | 4.5 V to 28 V | 3.0 V to 40 V |
| Number of Outputs | 8 | 8 | 8 | 3 | 5 |
| Junction Temperature | -40 to +175 °C (Grade 0) | -40 to +175 °C | -40 to +175 °C | -40 to +150 °C | -40 to +150 °C |
| Window Watchdog | Yes (integrated) | Yes | Yes | No | No (gate-driver PMIC) |
| Configuration Interface | SPI / parallel | SPI / parallel | SPI / parallel | SPI | SPI |
主要差異化特點
- Integrated ASIL-D safety with 8 rails vs typical 3-4 rails (對比TLE92633BQXXUMA2)
- Dedicated safety PMIC vs multi-function gate-driver PMIC (對比TLE9180D32QKXUMA1)
- Grade 0 thermal headroom vs Grade 1 (對比TLE92633BQXXUMA2)
設計說明
Estimated: at VIN=13.5 V with the device supplying the full AURIX TC3xx core + peripherals (~5 W total output power), the TLF35584QVHS2XUMA1 dissipates approximately 1.5 W internally. The PG-VQFN-48 package requires a copper pour area of at least 2 cm² on the top layer connected to the exposed pad, plus thermal vias to an inner/outer plane, to keep the junction rise within Grade 0 limits at +175 °C ambient corner. Inadequate copper results in thermal shutdown and reset loops.
Place the input bulk capacitor (≥10 µF ceramic + 47 µF electrolytic) within 5 mm of the VIN pin to suppress load-dump transients. Keep the buck-switching node traces short and use a 4-layer PCB with a continuous ground plane below the PMIC to minimize EMI. The exposed thermal pad must be soldered with via arrays (0.3 mm drill, 0.6 mm pitch) per Infineon application note recommendations.
Always initialize the TLF35584 over SPI on every MCU boot and service the window watchdog in the correct time window - missing the service window triggers the fail-safe state machine and may latch the outputs off. The error pin (ERR) must be routed to a host MCU interrupt, not a GPIO. Refer to the Infineon safety manual for the required ASIL-D diagnostic coverage and dual-channel watchdog configuration.
合規資訊
AEC-Q100 Grade 0 qualified per Infineon product page. ISO 26262 ASIL-D system-capable with integrated safety features. RoHS and REACH compliant.
