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NXP Semiconductors MFS8612BMBA0ESR2
- Part No.:
- MFS8612BMBA0ESR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MFS8612BMBA0ESR2.pdf
- Description:
- SAFETY SYSTEM BASIS CHIP FOR DOM
- Quantity:
- Payment:
- Shipping:
Inventory:2,884
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Product details
Overview
MFS8612BMBA0ESR2 from NXP Semiconductors is a fail-safe system basis chip (SBC) designed for automotive domain controllers requiring ASIL B safety compliance, 60 V input capability for 24 V battery networks, integrated 15 A high-voltage buck controller (VPRE), dual LDOs (up to 400 mA each), and 10-channel ±1 % voltage monitoring. It serves as the central power management and safety supervisor in ADAS radar control units.
For engineers reviewing the MFS8612BMBA0ESR2 datasheet, MFS8612BMBA0ESR2 pinout, MFS8612BMBA0ESR2 application, or MFS8612BMBA0ESR2 equivalent, key selection considerations include its ASIL B qualification, QFN48 wettable flank package, I²C-based configuration, fail-safe outputs (PGOOD/RSTB/FS0B), and support for cascaded BYLink power synchronization with other NXP SBCs.
Technical Context
The MFS8612BMBA0ESR2 implements a hierarchical safety architecture with independent analog voltage supervision circuitry, logical and analog built-in self-test (LBIST/ABIST), and dedicated MCU failure monitoring via FCCU1/FCCU2 inputs and PWM analysis. Its fail-safe state machine drives PGOOD, RSTB, and FS0B outputs with latent fault detection.
It supports leader/follower power-up sequencing via XFAILB, provides 10 ms configurable RSTB release delay for MCU compliance, and enables system-level EMI control through spread spectrum, slew rate tuning, and manual frequency adjustment on all switching regulators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | −0.3 V to 60 V DC on VSUP1/VSUP2 - supports 24 V battery systems with reverse-battery protection diode requirement. |
| VPRE Output Capability | Configurable 3.3–5.0 V, up to 15 A DC - enables high-current pre-regulation for downstream MCUs or PMICs using external FETs. |
| BUCK Output | 1.0–3.3 V, up to 2.5 A DC - supplies core voltage to automotive-grade MCUs with integrated synchronous rectification. |
| LDO1/LDO2 Current | Each delivers up to 400 mA DC - powers I/O rails and peripherals while supporting load-switch functionality on LDO1. |
| Voltage Monitoring | 10 inputs with ±1 % accuracy - monitors internal rails and external PMIC outputs for QM-compliant subsystems. |
| Functional Safety | ASIL B compliant per ISO 26262 - includes challenger watchdog interface, ERRMON input, and safety-critical output drivers with fault detection. |
| Package | HPQFN48eP (SOT619-26), wettable flanks - optimized thermal resistance (RθJA = 23 °C/W, 2s6p) and AEC-Q100 Grade 1 (−40 °C to 125 °C). |
Pinout & Package
Package: HPQFN48eP (48-pin plastic thermally enhanced very thin quad flat package with exposed pad and wettable flanks). Exposed pad must be soldered to GND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP1 / VSUP2 | Main power supply inputs | Accept 60 V max DC; require external reverse-battery protection diodes in series. |
| VPRE-related pins (PRE_SW, PRE_GHS, PRE_GLS, PRE_FB, PRE_CSP, PRE_CSN, PRE_COMP, PRE_BOOT) | High-voltage buck controller interface | Drive external high-side/low-side FETs; support current sensing, feedback, and bootstrap operation for 15 A VPRE rail. |
| BUCK_SW / BUCK_IN / BUCK_FB | Integrated low-voltage buck converter interface | Switching node, input supply, and feedback path for 2.5 A synchronous buck regulator (1.0–3.3 V output). |
| LDO1 / LDO1_IN / LDO2 | Linear regulator outputs and inputs | LDO1 (1.5–5.0 V, 400 mA, load switch capable); LDO2 (1.1–5.0 V, 400 mA) - power MCU I/O and peripherals. |
| VMON0_I2C to VMON9_RES | Voltage monitoring inputs | 10 analog inputs (DAC- and resistor-bridge types) for ±1 % accurate rail supervision across internal and external supplies. |
| PGOOD / RSTB / FS0B | Fail-safe outputs | Open-drain active-low signals indicating power health, reset assertion, and system safe state - each with latent fault detection. |
| XFAILB / AMUX / INTB / SDA / SCL | System coordination interfaces | Enable BYLink cascading (XFAILB), multiplexed ADC monitoring (AMUX), interrupt signaling (INTB), and I²C configuration (SDA/SCL). |
Key Features
| Feature | Design Value |
|---|---|
| BYLink Power Synchronization | Enables multiple SBCs/PMICs to behave as one coordinated unit with synchronized power-up sequencing and safety state propagation. |
| e-Fuse Protection on VPRE | Shuts down the 15 A high-voltage buck stage during overcurrent or fault events to prevent damage to downstream systems. |
| 10-Channel Analog Monitoring | Supports mixed monitoring of internal regulators and external PMIC rails with ±1 % accuracy - extends safety coverage beyond NXP components. |
| I²C with 8-bit CRC | 32-bit register access with error-detecting CRC ensures robust configuration and status reporting in noisy automotive environments. |
| OTP-Based Customization | Factory-programmed OTP (A0 code) defines feature set including FIN/VMON9_RES pin multiplexing and watchdog mode (simple/challenger). |
Applications
| Radar Domain Controller | ADAS Central Gateway |
|---|---|
Use Scenario: Powers and supervises multi-core radar SoC (e.g., NXP S32R) in 77 GHz imaging radar modules with strict ASIL B timing and voltage margin requirements. IC Role / Device Role / Timing Role: Primary SBC providing VPRE (5.0 V/12 A), BUCK (1.2 V/2.5 A), dual LDOs, and 10-rail monitoring - manages power sequencing, fault response, and fail-safe state transitions. Use Value: Eliminates need for discrete supervisors and external sequencers; reduces BOM count by integrating e-fuse, watchdog, and synchronized reset generation. | Use Scenario: Manages power delivery and safety monitoring across heterogeneous ECUs (camera, ultrasonic, V2X) in zonal architecture gateways operating on 24 V truck/bus battery networks. IC Role / Device Role / Timing Role: System-level power hub coordinating cascaded SBCs via XFAILB and BYLink; provides centralized voltage supervision and fail-safe signaling to domain MCU. Use Value: Enables deterministic power-up order across zones and simplifies functional safety certification by consolidating monitoring and fault reporting into one ASIL B-certified component. |
| 24 V Electrification Control Unit | Commercial Vehicle Infotainment Host |
Use Scenario: Supplies and monitors power rails for motor control MCU and CAN FD transceivers in electric power steering (EPS) or brake-by-wire ECUs deployed in heavy-duty vehicles. IC Role / Device Role / Timing Role: High-reliability SBC delivering regulated VPRE (4.5 V/15 A), BOOST (5.5 V/1 A), and LDOs while continuously validating 10 voltage domains including external gate drivers. Use Value: Supports 60 V load dump immunity and meets AEC-Q100 Grade 1 thermal specs (−40 °C to 125 °C ambient), enabling under-hood deployment without derating. | Use Scenario: Powers infotainment application processor, display interface, and audio codec in 24 V commercial vehicle head units where EMC robustness and long-term supply stability are critical. IC Role / Device Role / Timing Role: Fail-safe PMIC providing clean, sequenced power with EMI-optimized switching (spread spectrum + slew control) and conducted/radiated emission compliance per FMC1278 rev.3 and IEC 61967-4. Use Value: Reduces radiated emissions by >6 dBµV in 150 kHz–30 MHz band versus non-EMC-optimized SBCs, easing CISPR 25 Class 5 certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fail-safe SBC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MFS8613BMBA0ESR2 | Includes integrated BOOST converter (5–6 V, 1 A); MFS8612BMBA0ESR2 omits BOOST. | Required when system needs auxiliary 5.5 V rail for CAN transceivers or sensors not supplied by main regulators. | Select MFS8613BMBA0ESR2 only if BOOST functionality is needed; otherwise MFS8612BMBA0ESR2 offers lower cost and identical safety/power features. |
| MFS8622BMBA0ESR2 | ASIL D qualified (vs. ASIL B); same pinout, OTP structure, and regulator topology. | Suitable for higher-integrity ADAS Level 3+ systems requiring full ASIL D decomposition and diagnostic coverage. | Choose MFS8622BMBA0ESR2 when functional safety target exceeds ASIL B; no hardware change required but requires additional safety documentation and validation effort. |
Compared with MFS8613BMBA0ESR2, the MFS8612BMBA0ESR2 saves board space and cost by omitting the BOOST converter while retaining identical VPRE, BUCK, LDO, and monitoring capabilities; versus MFS8622BMBA0ESR2, it reduces safety certification scope and toolchain overhead for ASIL B–targeted domain controllers.
Availability
MFS8612BMBA0ESR2 is available at Aetrix Electronics and suitable for automotive radar, ADAS domain control, and 24 V electrification applications requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle support.
Supply support for MFS8612BMBA0ESR2 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
NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with leadership in automotive processors and power management ICs.
The FS86 family - including MFS8612BMBA0ESR2 - was developed to address scalable, fail-safe power management in next-generation automotive domain controllers, combining high-current regulation, comprehensive voltage supervision, and ISO 26262-compliant safety mechanisms.
FAQ
What is the maximum input voltage rating for MFS8612BMBA0ESR2?
MFS8612BMBA0ESR2 supports a maximum DC input voltage of 60 V on VSUP1 and VSUP2 pins, making it suitable for 24 V battery network applications in trucks and commercial vehicles. External reverse-battery protection diodes are mandatory on both supply inputs per the datasheet requirements.
Does MFS8612BMBA0ESR2 include an integrated boost converter?
No, MFS8612BMBA0ESR2 does not include an integrated boost converter. Per Table 1 of the FS8600_SDS, the FS8612 variant supports VPRE, BUCK, and two LDOs but excludes the BOOST function. That capability is present only in FS8613 and FS8623 variants.
What safety certifications apply to MFS8612BMBA0ESR2?
MFS8612BMBA0ESR2 is developed in compliance with ISO 26262 and qualified to AEC-Q100 Grade 1 (−40 °C to 125 °C ambient). It is rated for ASIL B automotive safety systems and includes LBIST, ABIST, dedicated watchdog interfaces (FCCU1/FCCU2), and fail-safe outputs with latent fault detection.
How many voltage monitoring inputs does MFS8612BMBA0ESR2 support?
MFS8612BMBA0ESR2 supports up to 10 voltage monitoring inputs (VMON0–VMON9) with ±1 % accuracy. These include DAC-type inputs (VMON1–VMON3), internal resistor-bridge inputs (VMON4_RINT), and external resistor-bridge inputs (VMON5_RES through VMON9_RES), enabling supervision of both internal regulators and external PMIC rails.
Is MFS8612BMBA0ESR2 pin-compatible with other FS86 family members?
Yes, MFS8612BMBA0ESR2 uses the HPQFN48eP package and shares identical pinout with all FS86x0–FS86x3 variants in the same package option (e.g., MFS8613BMBA0ESR2, MFS8622BMBA0ESR2). Functional differences (e.g., BOOST presence, ASIL level) are defined by OTP configuration and silicon revision, not pin assignment.
MFS8612BMBA0ESR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Camera
- Current - Supply:
- -
- Voltage - Supply:
- 60V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 48-HVQFN (7x7)
MFS8612BMBA0ESR2 FAQ
1.How can I place an order for MFS8612BMBA0ESR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MFS8612BMBA0ESR2 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 MFS8612BMBA0ESR2 reliable?
The price and inventory of MFS8612BMBA0ESR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MFS8612BMBA0ESR2 is usually 5 days.
3.What payment methods are accepted for MFS8612BMBA0ESR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MFS8612BMBA0ESR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MFS8612BMBA0ESR2?
MFS8612BMBA0ESR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MFS8612BMBA0ESR2 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 MFS8612BMBA0ESR2?
For technical support, including MFS8612BMBA0ESR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MFS8612BMBA0ESR2 requirements.
6.How does Aetrix verify that MFS8612BMBA0ESR2 is sourced from the original manufacturer or authorized distributors?
All MFS8612BMBA0ESR2 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 MFS8612BMBA0ESR2 meets industry standards.
7.What is the process for return or replacement of MFS8612BMBA0ESR2?
All MFS8612BMBA0ESR2 units undergo pre-shipment inspection (PSI). If there is an issue with MFS8612BMBA0ESR2, 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 MFS8612BMBA0ESR2 part is unused and in its original packaging.
Return procedure for MFS8612BMBA0ESR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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