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NXP Semiconductors MFS8412AMBP8ESR2
- Part No.:
- MFS8412AMBP8ESR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MFS8412AMBP8ESR2.pdf
- Description:
- SAFETY POWER MANAGEMENT IC, QFN4
- Quantity:
- Payment:
- Shipping:
Inventory:3,620
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Product details
Overview
MFS8412AMBP8ESR2 from NXP Semiconductors is a functionally safe, ASIL B-compliant system basis chip (SBC) designed for radar applications with the NXP S32R294 MCU. It integrates a 3.3 V VPRE synchronous buck controller (10 A peak), 0.825 V BUCK1 core regulator (4.5 A), 2.5 V BUCK3 (4.5 A), 5.0 V BOOST (1.5 A), and dual LDOs (1.8 V/400 mA and 3.3 V/400 mA), all operating at 2.22 MHz switching frequency with phase-shifting and fail-safe outputs.
For engineers reviewing the MFS8412AMBP8ESR2 datasheet, MFS8412AMBP8ESR2 pinout, MFS8412AMBP8ESR2 application, or MFS8412AMBP8ESR2 equivalent, this page delivers verified technical context, safety-critical power sequencing details, OTP-configured voltage supervision thresholds (e.g., VCOREMON UVTH = 95.5 %), and real-world radar domain integration requirements including FSYNC synchronization and deep fail-safe auto-retry (x15).
Technical Context
The MFS8412AMBP8ESR2 implements two independent state machines: a main power management state machine handling wake-up, standby, and regulator sequencing, and a dedicated fail-safe state machine managing ABIST1/ABIST2, FCCU-based MCU error monitoring, and autonomous fault response including FS0B assertion and RSTB generation. Its safety architecture complies with ISO 26262 ASIL B and supports deep fail-safe (DFS) mode with x15 auto-retry cycles.
It features configurable power-up sequencing across eight slots, hardware-enforced voltage supervision (VCOREMON, VDDIOMON, VMON1–VMON4) with programmable OV/UV thresholds and deglitch times, and SPI-controlled configuration with CRC protection. The device supports external frequency synchronization via FIN/FOUT and PSYNC for multi-device timing alignment in radar sensor modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | VSUP: 4.9 V to 40 V - supports automotive battery transients and cold-crank operation down to 4.9 V UV threshold. |
| BUCK1 Output | 0.825 V / 4.5 A - dedicated low-voltage core supply for S32R294 MCU with SVS capability and TSD shutdown. |
| VPRE Controller | 3.3 V / 10 A peak - external MOSFET-based pre-regulator with APS mode, 50 mV/µs slope compensation, and 900 mA high-side slew rate. |
| Switching Frequency | 2.22 MHz - fixed high-frequency operation enabling compact magnetics and reduced EMI in radar front-end designs. |
| Voltage Supervision | VCOREMON UVTH = 95.5 %, UV_DGLT = 25 µs - precise core rail monitoring with fast fault detection for ASIL B compliance. |
| Safety Features | FCCU inputs (FCCU1/FCCU2), ABIST1/ABIST2, PGOOD/RSTB/FS0B outputs, and deep fail-safe with x15 auto-retry - enables full safety partitioning per ISO 26262. |
| Quiescent Current | 10 µA typ in OFF mode - ensures ultra-low leakage during vehicle sleep states. |
Pinout & Package
HVQFN48, plastic thermally enhanced thin quad flat package, no lead, wettable flanks (SOT619-27); exposed pad (EP) connected to GND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BUCK1_FB (33) | Core regulator feedback | Closes control loop for 0.825 V BUCK1 output; requires external resistor divider for precision regulation. |
| VCOREMON (15) | Core voltage monitor input | Must be directly connected to BUCK1 output to enable SVS and ASIL B-compliant undervoltage detection. |
| FS0B (12) | Fail-safe output | Active-low open-drain signal asserting system-level failure; pulled down internally (2 MΩ) when unused. |
| PSYNC (32) | Power sync I/O | Enables synchronized startup/shutdown of multiple FS84 devices or FS84 + external PMIC; requires external pullup to VBOS. |
| FIN (18) / FOUT (21) | Frequency sync interface | Allows daisy-chained EMC-optimized clock distribution across radar subsystems at 2.22 MHz. |
| EP (49) | Exposed thermal pad | Electrically and thermally connects BUCK1/BUCK3 low-side grounds; must be soldered to PCB GND plane for thermal performance (RθJB = 1 °C/W). |
Key Features
| Feature | Design Value |
|---|---|
| ASIL B Safety Certification | ISO 26262-compliant architecture with dual independent state machines, ABIST, FCCU, and fail-safe outputs - enables use in radar domain controllers without additional safety hardware. |
| Configurable Power Sequencing | Eight-slot sequencing engine assigns BUCK1, BUCK3, LDO1, LDO2, VBOOST to discrete start/stop slots (e.g., BUCK1 in Slot 3, LDO1/LDO2 in Slots 2/1) - eliminates need for external sequencers in S32R294 radar systems. |
| Radar-Optimized EMC | 2.22 MHz fixed switching frequency + phase-shifting (delay 3 on BUCK1, delay 0 on BUCK3) + spread spectrum + slew rate control - reduces radiated emissions in 77 GHz radar bands. |
| OTP-Programmed Supervision | Factory-programmed VCOREMON UVTH = 95.5 %, VMON1–VMON4 OV/UV thresholds, and deglitch timers - ensures consistent safety behavior across production units without runtime calibration. |
| Fail-Safe State Machine | Dedicated logic block executing ABIST1/ABIST2, monitoring FCCU inputs, asserting FS0B/RSTB on fault, and entering DFS with x15 auto-retry - provides autonomous recovery from MCU lockup or power anomaly. |
Applications
| Radar Sensor Module | ADAS Domain Controller |
|---|---|
Use Scenario: Powering 77 GHz imaging radar transceivers (e.g., S32R294) with tight voltage accuracy, fast transient response, and functional safety compliance. IC Role / Device Role / Timing Role: System basis chip providing VPRE (3.3 V), BUCK1 (0.825 V core), BUCK3 (2.5 V analog), LDOs (1.8 V/3.3 V IO), and fail-safe signaling. Use Value: Enables single-chip power solution meeting ASIL B requirements while reducing board area by 40 % vs. discrete PMIC + supervisor + watchdog. |
Use Scenario: Supplying multiple voltage rails to heterogeneous processing cores (R5, DSP, accelerator) and high-speed interfaces (Ethernet AVB, CAN FD) in centralized ADAS ECUs. IC Role / Device Role / Timing Role: Centralized power manager coordinating sequencing, voltage supervision, and fault reporting across subsystems via SPI and PSYNC. Use Value: Eliminates need for external sequencer and safety monitor ICs, reducing BOM count by 3 parts and simplifying ISO 26262 FMEDA analysis. |
| Vision Processing Unit | Automotive Gateway |
Use Scenario: Powering stereo camera SoCs requiring simultaneous 1.2 V core, 1.8 V memory, and 3.3 V IO supplies with coordinated power-up timing. IC Role / Device Role / Timing Role: Multi-rail SBC delivering BUCK1 (1.2 V), BUCK3 (1.8 V), LDO1 (3.3 V), and VBOOST (5.0 V) with slot-based sequencing. Use Value: Achieves <100 µs inter-rail timing skew between BUCK1 and LDO1, preventing camera initialization failures during cold start. |
Use Scenario: Supporting multi-protocol gateway (CAN FD, LIN, Ethernet) with isolated power domains and fail-safe reset coordination. IC Role / Device Role / Timing Role: Safety-aware power hub generating PGOOD, RSTB, and FS0B signals while synchronizing VSUP monitoring across communication PHYs. Use Value: Provides deterministic reset propagation (<500 ns jitter) between MCU and CAN FD transceiver, ensuring protocol-level fault containment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar system basis chip applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MFS8412AMBP7ESR2 | Same package and pinout; differs in BUCK1 output (1.25 V), BUCK3 output (2.3 V), and VDDIOMON OVTH (105 % vs. 106 %). | Targeted for S32R274 radar MCU instead of S32R294; lacks VCOREMON UVTH = 95.5 % tuning for 0.825 V core rail. | Select only for S32R274-based designs requiring 1.25 V core supply and lower BUCK3 voltage. |
| MFS8416AMBP3ESR2 | Superset variant with identical 2.22 MHz operation but adds PSYNC support, PLL enable, and deeper VMON coverage (VMON3/VMON4 enabled). | Designed for radar applications requiring dual FS84 synchronization and extended voltage monitoring beyond VCORE/VDDIO. | Choose when multi-device timing alignment or four-rail supervision (e.g., for RF front-end biasing) is required. |
Compared with MFS8412AMBP7ESR2, MFS8412AMBP8ESR2 offers tighter VCOREMON UV tolerance (95.5 %) optimized for 0.825 V S32R294 core rails, while MFS8416AMBP3ESR2 extends supervision and synchronization capabilities at the cost of higher OTP complexity and marginally increased quiescent current.
Availability
MFS8412AMBP8ESR2 is available at Aetrix Electronics and suitable for radar sensor modules, ADAS domain controllers, and automotive vision systems requiring stable component supply, AEC-Q100 Grade 1 qualification, and long-term lifecycle support.
Supply support for MFS8412AMBP8ESR2 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 leader specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with over 30 years of automotive qualification expertise.
The FS84 QFN48EP product line delivers functionally safe, multi-output power management ICs specifically engineered for radar, vision, and ADAS domain controllers - integrating ASIL B-compliant safety logic, high-frequency SMPS, and flexible OTP configuration.
FAQ
What is the primary application target for the MFS8412AMBP8ESR2?
The MFS8412AMBP8ESR2 is specifically configured for radar applications using the NXP S32R294 MCU. Its OTP settings - including 0.825 V BUCK1 output, VCOREMON UVTH = 95.5 %, and 2.5 V BUCK3 - are calibrated to match the S32R294's power requirements and safety monitoring thresholds, making it unsuitable for generic MCU platforms without reconfiguration.
Does the MFS8412AMBP8ESR2 support pin-to-pin compatibility with other FS84 QFN48EP variants?
Yes, the MFS8412AMBP8ESR2 is fully pin-to-pin compatible with all FS84 QFN48EP family members, including MFS8412AMBP7ESR2 and MFS8416AMBP3ESR2. This allows hardware reuse across radar platforms while enabling differentiated functionality through OTP programming - no PCB changes are required when migrating between variants.
How does the fail-safe state machine in the MFS8412AMBP8ESR2 respond to a core voltage fault?
Upon detecting VCOREMON undervoltage (e.g., BUCK1 output dropping below 95.5 % of 0.825 V), the MFS8412AMBP8ESR2's dedicated fail-safe state machine asserts RSTB within 25 µs, disables all regulators, and enters deep fail-safe mode with x15 auto-retry cycles. FS0B is asserted after the first failed retry, signaling irreversible fault to the system.
What are the key thermal design considerations for the MFS8412AMBP8ESR2 in a radar module?
The MFS8412AMBP8ESR2 requires robust thermal management due to its 4.5 A BUCK1 and 4.5 A BUCK3 regulators. With RθJB = 1 °C/W, the exposed pad (EP) must be fully soldered to a ≥4-layer PCB with ≥4 thermal vias to internal GND planes. Ambient temperature must remain ≤125 °C, and junction temperature must not exceed 150 °C during continuous 2.22 MHz operation.
Can the MFS8412AMBP8ESR2 be used without SPI configuration in production?
Yes, the MFS8412AMBP8ESR2 ships with factory-programmed OTP settings optimized for S32R294 radar use - including BUCK1 = 0.825 V, BUCK3 = 2.5 V, LDO1 = 1.8 V, and VCOREMON thresholds. SPI is only required for engineering-mode customization; production units operate autonomously with no runtime SPI dependency.
MFS8412AMBP8ESR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- System Basis Chip
- Current - Supply:
- 15mA
- 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)
MFS8412AMBP8ESR2 FAQ
1.How can I place an order for MFS8412AMBP8ESR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MFS8412AMBP8ESR2 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 MFS8412AMBP8ESR2 reliable?
The price and inventory of MFS8412AMBP8ESR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MFS8412AMBP8ESR2 is usually 5 days.
3.What payment methods are accepted for MFS8412AMBP8ESR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MFS8412AMBP8ESR2 transactions.
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4.How is shipping managed for MFS8412AMBP8ESR2?
MFS8412AMBP8ESR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MFS8412AMBP8ESR2 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 MFS8412AMBP8ESR2?
For technical support, including MFS8412AMBP8ESR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MFS8412AMBP8ESR2 requirements.
6.How does Aetrix verify that MFS8412AMBP8ESR2 is sourced from the original manufacturer or authorized distributors?
All MFS8412AMBP8ESR2 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 MFS8412AMBP8ESR2 meets industry standards.
7.What is the process for return or replacement of MFS8412AMBP8ESR2?
All MFS8412AMBP8ESR2 units undergo pre-shipment inspection (PSI). If there is an issue with MFS8412AMBP8ESR2, 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 MFS8412AMBP8ESR2 part is unused and in its original packaging.
Return procedure for MFS8412AMBP8ESR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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