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NXP Semiconductors MFS8412AMBP7ESR2
- Part No.:
- MFS8412AMBP7ESR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MFS8412AMBP7ESR2.pdf
- Description:
- SAFETY POWER MANAGEMENT IC, QFN4
- Quantity:
- Payment:
- Shipping:
Inventory:1,569
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Product details
Overview
MFS8412AMBP7ESR2 from NXP Semiconductors is a functionally safe, ASIL B-compliant system basis chip (SBC) designed for radar applications with the NXP S32R274 MCU. It integrates a 3.3 V VPRE synchronous buck controller (10 A peak), 1.25 V BUCK1 core regulator (4.5 A), 2.3 V BUCK3 (4.5 A), 5.74 V BOOST converter, and two LDOs (3.3 V/150 mA and 5.0 V/150 mA), all operating at 2.22 MHz switching frequency with fail-safe outputs and SPI control.
For engineers reviewing the MFS8412AMBP7ESR2 datasheet, MFS8412AMBP7ESR2 pinout, MFS8412AMBP7ESR2 application, or MFS8412AMBP7ESR2 equivalent, this device supports radar power sequencing, voltage supervision (VCOREMON, VMON1–VMON4), fail-safe state machine operation, deep fail-safe auto-retry (x15), and synchronized multi-device power management via PSYNC - critical for automotive ADAS domain controllers requiring ISO 26262 compliance and AEC-Q100 Grade 1 qualification.
Technical Context
The MFS8412AMBP7ESR2 implements dual independent state machines: a main power management state machine handling wake-up, standby, and regulator sequencing, and a dedicated fail-safe state machine managing ABIST, FCCU-based MCU monitoring, voltage supervision (OV/UV detection with 25 µs/15 µs delays), and fail-safe output assertion (FS0B, RSTB, PGOOD). Its safety architecture supports ASIL B partitioning with configurable deep fail-safe recovery and hardware-enforced power-good timing.
It features 2.22 MHz fixed-frequency PWM operation across all SMPS rails, phase-shifting capability (delay 0 for BUCK1/BUCK3/VPRE), integrated slope compensation (140 mV/µs for VPRE), and thermal shutdown behavior per rail (BUCK1/BUCK3/BOOST shutdown on TSD). The device uses OTP-programmed configuration for voltage setpoints, current limits, power-up sequencing slots, and fail-safe thresholds - no runtime reconfiguration of core safety parameters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | VSUP: 4.9 V to 40 V - supports wide automotive battery range including cold-crank (4.9 V UV threshold) |
| VPRE Output | 3.3 V @ 10 A peak - supplies external radar transceiver or PHY; force-PWM mode ensures stable low-noise operation |
| BUCK1 Output | 1.25 V @ 4.5 A peak - dedicated core supply for S32R274 MCU with SVS capability and soft-start (7.81 mV/µs) |
| BUCK3 Output | 2.3 V @ 4.5 A peak - powers radar signal chain peripherals; starts in Slot 0 with 10.41 mV/µs DVS |
| LDO1/LDO2 Outputs | 3.3 V/150 mA and 5.0 V/150 mA - supply MCU I/Os and analog interfaces; sequenced in Slots 2 and 1 respectively |
| Safety Compliance | ISO 26262 ASIL B, AEC-Q100 Grade 1 - qualified for radar ECU use with built-in self-test (ABIST/LBIST) and fail-safe outputs |
| Quiescent Current | 10 µA typ in OFF mode - enables ultra-low-power sleep states for radar wake-on-radar functionality |
Pinout & Package
Package: HVQFN48 (SOT619-27), thermally enhanced wettable flanks, 7 mm × 7 mm × 0.85 mm, exposed pad (EP) for thermal and GND connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VPRE-related pins (35–42) | VPRE controller interface | PRE_CSP/PRE_COMP/PRE_FB configure external MOSFET gate drive and feedback; PRE_GHS/PRE_GLS drive high/low-side gates; PRE_SW is switching node |
| BUCK1 pins (30–33) | Core regulator interface | BUCK1_IN feeds input; BUCK1_SW is switch node; BUCK1_FB provides feedback; VCOREMON (Pin 15) monitors output |
| FS0B (Pin 12) | Fail-safe output | Active-low open-drain output asserting fault condition; requires external pull-up; part of fail-safe state machine response |
| PGOOD (Pin 16) / RSTB (Pin 17) | Power status & reset | PGOOD active-low indicates all regulated outputs in spec; RSTB active-low resets MCU; both require VDDIO pull-up |
| SPI interface (22–25) | Configuration & monitoring | MISO/MOSI/SCLK/CSB enable OTP emulation during development and real-time register access for diagnostics |
| VMON1–VMON4 (Pins 10–11,13–14) | Voltage supervision inputs | Monitor external rail voltages; configured for OV/UV thresholds (e.g., VMON1: 112%/88% at 3.3 V) with 25 µs/15 µs filtering |
Key Features
| Feature | Design Value |
|---|---|
| Fail-safe state machine with ABIST | Hardware-enforced self-test sequence (ABIST1/ABIST2) validates voltage monitors and logic before enabling PGOOD/RSTB |
| Deep fail-safe auto-retry | x15 retry attempts on fault before entering irreversible deep fail-safe; prevents spurious lockup in radar ECU environments |
| Configurable power sequencing | Independent start/stop slots per regulator (e.g., BUCK1 in Slot 1, LDO1 in Slot 2) enable precise timing for S32R274 boot sequence |
| EMC-optimized switching | 2.22 MHz fixed frequency + phase shifting (delay 0 for BUCK1/BUCK3) reduces peak EMI in 77 GHz radar bands |
| Multi-rail voltage supervision | Five independent monitors (VCOREMON, VMON1–VMON4) with programmable OV/UV thresholds and glitch filters for radar sensor stability |
| OTP-programmed safety configuration | All safety-critical parameters (thresholds, sequencing, fail-safe behavior) stored in one-time-programmable memory - immutable in production |
Applications
| Radar Sensor Power Management | ADAS Domain Controller Supply |
|---|---|
Use Scenario: Powers 77 GHz corner radar modules with S32R274 MCU, RF transceivers, and ADC front-ends under automotive temperature and EMC constraints. IC Role / Device Role / Timing Role: System basis chip providing sequenced, monitored, and fail-safe power to VPRE (3.3 V), BUCK1 (1.25 V), BUCK3 (2.3 V), and LDOs - with 2.22 MHz switching synchronized to avoid interference with radar chirp signals. Use Value: Enables deterministic power-up within 10 ms, maintains <±1% output regulation during load transients, and asserts FS0B within 25 µs on OV/UV fault - meeting ASIL B diagnostic coverage requirements. | Use Scenario: Supplies centralized power to multi-core ADAS domain controllers integrating radar, vision, and vehicle networking functions. IC Role / Device Role / Timing Role: Integrates multiple SMPS and LDOs into single package to reduce board space; PSYNC pin allows synchronization with secondary FS84 or external PMIC for coherent system-level power management. Use Value: Reduces component count by 6+ discrete regulators, cuts PCB area by >35%, and eliminates inter-rail timing mismatches through OTP-configured slot-based sequencing. |
| Automotive Camera Module | V2X Communication Unit |
Use Scenario: Delivers clean, low-noise power to high-resolution stereo camera modules with image signal processors and MIPI interfaces. IC Role / Device Role / Timing Role: Provides 1.2 V BUCK1 for ISP core, 2.8 V LDO for MIPI PHY, and 3.3 V LDO for sensors - all supervised and sequenced to prevent startup glitches. Use Value: Achieves <10 mVpp output ripple at 2.22 MHz, suppresses conducted emissions via spread-spectrum-capable FSYNC, and meets CISPR 25 Class 5 radiated emission limits. | Use Scenario: Powers DSRC or C-V2X communication units requiring robust 5 V and 3.3 V rails with fast fault response for safety-critical messaging. IC Role / Device Role / Timing Role: Generates isolated 5.0 V BOOST and 3.3 V LDO2 outputs; uses FCCU1/FCCU2 inputs to monitor host processor health and trigger fail-safe shutdown on watchdog timeout. Use Value: Guarantees <100 µs fault-to-FS0B assertion, supports hot-plug resilience via VSUP undervoltage hysteresis (4.9 V threshold), and maintains operation down to −40 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar system basis chip applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MFS8412AMBP8ESR2 | Same package and pinout; differs in BUCK1 output (0.825 V vs. 1.25 V) and VPRE slope compensation (50 mV/µs vs. 140 mV/µs); uses APS mode instead of Force PWM | Targeted for S32R294 MCU (lower core voltage); not suitable for S32R274 without redesign | Select MFS8412AMBP8ESR2 only when migrating to S32R294-based radar platforms |
| MFS8416AMBP3ESR2 | Superset variant with identical VPRE/BUCK1/BOOST specs but adds BUCK3 (enabled) and LDO2 (5.0 V); same 2.22 MHz frequency and fail-safe architecture | Designed for generic radar applications without MCU-specific OTP; lacks S32R274-optimized sequencing and monitoring | Choose MFS8416AMBP3ESR2 for flexible radar designs where MCU-agnostic power delivery is prioritized over S32R274-specific optimization |
Compared with MFS8412AMBP7ESR2, MFS8412AMBP8ESR2 targets a different MCU core voltage and control mode, while MFS8416AMBP3ESR2 offers broader regulator coverage but less optimized S32R274 integration - making MFS8412AMBP7ESR2 the precise fit for production S32R274 radar ECUs requiring minimal validation effort.
Availability
MFS8412AMBP7ESR2 is available at Aetrix Electronics and suitable for radar sensor modules, ADAS domain controllers, automotive camera systems, and V2X communication units requiring stable component supply, long-term automotive lifecycle support, and ASIL B-certified power management.
Supply support for MFS8412AMBP7ESR2 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 applications, with leadership in radar processing and functional safety ICs.
The FS84 QFN48EP product line delivers integrated, ASIL B-compliant power management for next-generation automotive radar and ADAS systems - designed to replace discrete PMICs and simplify ECU design while meeting ISO 26262 requirements.
FAQ
What is the primary application target for the MFS8412AMBP7ESR2?
The MFS8412AMBP7ESR2 is specifically configured for radar systems using the NXP S32R274 MCU. Its OTP settings - including 1.25 V BUCK1 output, 3.3 V VPRE, 2.3 V BUCK3, and Slot 0/1/2 power sequencing - are optimized for the S32R274's boot timing, core voltage, and peripheral power requirements. This makes MFS8412AMBP7ESR2 distinct from generic FS84 variants and unsuitable for non-S32R274 platforms without revalidation.
Does the MFS8412AMBP7ESR2 support pin-to-pin compatibility with other FS84 QFN48EP devices?
Yes, all FS84 QFN48EP devices, including MFS8412AMBP7ESR2, are pin-to-pin and software compatible per the datasheet. However, OTP-programmed configurations (voltage setpoints, sequencing, safety thresholds) differ between variants. While PCB layout is interchangeable, firmware must be validated for each OTP flavor - MFS8412AMBP7ESR2's S32R274-specific settings cannot be replicated by reprogramming another FS84 part in-system.
What safety certifications does the MFS8412AMBP7ESR2 hold?
The MFS8412AMBP7ESR2 complies with ISO 26262 up to ASIL B and is qualified per AEC-Q100 Grade 1 (−40 °C to +125 °C ambient). It includes hardware-based fail-safe mechanisms: ABIST/LBIST, dual independent state machines, configurable OV/UV monitors with glitch filtering, and fail-safe outputs (FS0B, RSTB, PGOOD). These features are verified in the device's safety manual and supported by NXP's FMEDA report for ASIL B decomposition.
How is the MFS8412AMBP7ESR2 configured for power sequencing?
The MFS8412AMBP7ESR2 uses OTP-programmed power sequencing slots: BUCK1 starts/stops in Slot 1, BUCK3 in Slot 0, LDO1 in Slot 2, and LDO2 in Slot 1. This ordering ensures VPRE (3.3 V) powers up first, followed by BUCK1 (1.25 V core) and BUCK3 (2.3 V peripherals), then LDOs - matching the S32R274's documented boot sequence. Slot timing is hardware-controlled and immune to software faults.
Can the MFS8412AMBP7ESR2 operate in OFF mode with ultra-low quiescent current?
Yes, the MFS8412AMBP7ESR2 achieves 10 µA typical quiescent current in OFF mode (power-down state) at TA < 85 °C, as specified in Table 9. This enables radar ECUs to maintain wake-on-radar functionality while minimizing battery drain during vehicle sleep modes. The OFF mode retains VSUP monitoring and wake-up detection on WAKE1/WAKE2 pins, allowing rapid resumption of full operation within microseconds.
MFS8412AMBP7ESR2 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)
MFS8412AMBP7ESR2 FAQ
1.How can I place an order for MFS8412AMBP7ESR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MFS8412AMBP7ESR2 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 MFS8412AMBP7ESR2 reliable?
The price and inventory of MFS8412AMBP7ESR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MFS8412AMBP7ESR2 is usually 5 days.
3.What payment methods are accepted for MFS8412AMBP7ESR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MFS8412AMBP7ESR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MFS8412AMBP7ESR2?
MFS8412AMBP7ESR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MFS8412AMBP7ESR2 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 MFS8412AMBP7ESR2?
For technical support, including MFS8412AMBP7ESR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MFS8412AMBP7ESR2 requirements.
6.How does Aetrix verify that MFS8412AMBP7ESR2 is sourced from the original manufacturer or authorized distributors?
All MFS8412AMBP7ESR2 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 MFS8412AMBP7ESR2 meets industry standards.
7.What is the process for return or replacement of MFS8412AMBP7ESR2?
All MFS8412AMBP7ESR2 units undergo pre-shipment inspection (PSI). If there is an issue with MFS8412AMBP7ESR2, 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 MFS8412AMBP7ESR2 part is unused and in its original packaging.
Return procedure for MFS8412AMBP7ESR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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