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NXP Semiconductors MFS8632BMDA0ESR2
- Part No.:
- MFS8632BMDA0ESR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MFS8632BMDA0ESR2.pdf
- Description:
- SAFETY SYSTEM BASIS CHIP FOR DOM
- Quantity:
- Payment:
- Shipping:
Inventory:3,218
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Product details
Overview
MFS8632BMDA0ESR2 from NXP Semiconductors is a fail-safe system basis chip (SBC) designed for automotive domain controllers requiring ASIL D compliance, multi-rail power management, and integrated safety monitoring. It delivers 15 A VPRE buck output, 2.5 A BUCK, 1 A BOOST, dual 400 mA LDOs, and monitors ten voltages with ±1 % accuracy - enabling robust power sequencing and fault detection in radar and ADAS ECUs.
For engineers reviewing the MFS8632BMDA0ESR2 datasheet, MFS8632BMDA0ESR2 pinout, MFS8632BMDA0ESR2 application, or MFS8632BMDA0ESR2 equivalent, this device supports I²C-configurable power rails, fail-safe outputs (PGOOD, RSTB, FS0B), voltage supervision across internal/external regulators, and synchronized cascaded SBC operation via XFAILB and BYLink platform compatibility.
Technical Context
The MFS8632BMDA0ESR2 implements a hierarchical safety architecture with independent analog voltage monitoring circuitry, logical and analog built-in self-test (LBIST/ABIST), and dedicated MCU failure monitoring via FCCU1/FCCU2 PWM inputs. Its fail-safe state machine manages PGOOD, RSTB, and FS0B outputs with latent fault detection.
It integrates a high-voltage synchronous buck controller (VPRE) supporting external FETs up to 15 A, a low-voltage integrated BUCK (2.5 A), a boost converter (1 A), and two LDOs (400 mA each), all configurable via 32-bit I²C interface with 8-bit CRC - enabling precise rail tuning and sequencing control for multi-MCU systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 36 V max for 12 V battery networks - enables use in automotive passenger vehicles without overvoltage risk. |
| VPRE Output Current | Up to 15 A DC - powers high-performance MCUs or SoCs directly via external FETs. |
| BUCK Output Current | Up to 2.5 A DC - supplies core logic rails (e.g., 1.2 V–3.3 V) with integrated switching. |
| BOOST Output Current | Up to 1 A DC - generates 5–6 V for CAN transceivers or sensors requiring isolated supply. |
| Voltage Monitoring Inputs | 10 channels with ±1 % accuracy - verifies QM rails from non-NXP PMICs and ensures end-to-end system safety integrity. |
| Functional Safety Level | ASIL D compliant per ISO 26262 - certified for safety-critical domain controller applications. |
| Operating Temperature | −40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood deployment. |
| I²C Interface | 32-bit command with 8-bit CRC - ensures robust configuration and status reporting in noisy automotive environments. |
Pinout & Package
Package: HPQFN48eP (48-pin wettable flank QFN with exposed thermal pad).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LDO1 / LDO2 | Linear regulator outputs | Provide configurable 1.1–5.0 V bias for MCU I/O and peripherals with load-switch capability. |
| VPRE_SW / PRE_GHS / PRE_GLS | High-voltage buck gate drive & switching node | Control external high-side/low-side FETs for 15 A VPRE rail generation and current sensing. |
| BUCK_SW / BUCK_FB | Integrated buck switching node & feedback | Enable closed-loop regulation of 1.0–3.3 V, 2.5 A output without external components. |
| VMON0_I2C – VMON9_RES | Voltage monitoring inputs | Monitor up to 10 rails (internal/external) with ±1 % accuracy for ASIL D safety checking. |
| PGOOD / RSTB / FS0B | Fail-safe outputs | Assert active-low signals to indicate power health, trigger MCU reset, or enter safe state on fault. |
| XFAILB | Power synchronization I/O | Enables leader/follower sequencing with other NXP SBCs in cascaded BYLink power platforms. |
| FCCU1 / FCCU2 | MCU failure monitoring inputs | Detect PWM signal anomalies from MCU to identify hardware-level failures per ASIL D requirements. |
| ERRMON | External IC error input | Accepts fault flags from companion ICs (e.g., PF50) to extend system-level failure coverage. |
Key Features
| Feature | Design Value |
|---|---|
| VPRE Buck Controller | Configurable 3.3–5.0 V output with e-fuse protection - shuts down 15 A rail during overcurrent to prevent damage. |
| 10-Channel Voltage Supervision | ±1 % accuracy across all 10 VMON inputs - enables monitoring of non-NXP QM rails for full-system ASIL D compliance. |
| BYLink Platform Integration | Synchronized power-up sequencing via XFAILB - allows cascaded SBCs to behave as one unified power domain. |
| Fail-Safe Outputs | PGOOD, RSTB, and FS0B with latent fault detection - ensures deterministic safe-state entry during internal or external faults. |
| OTP Configuration | A0 silicon revision with factory-programmed OTP - provides fixed feature set optimized for 12 V network ASIL D applications. |
| EMC Optimization | Spread spectrum, slew rate control, and manual frequency tuning - meets IEC 61967-4 (conducted emission) and ISO11452-4 (radiated immunity). |
Applications
| Radar ECU Power Management | ADAS Domain Controller |
|---|---|
Use Scenario: Powers imaging radar SoC, RF front-end, and CAN transceiver in 77 GHz radar modules. IC Role / Device Role / Timing Role: System basis chip providing sequenced 1.2 V core, 3.3 V I/O, 5.0 V CAN, and 12 V bias rails with fail-safe monitoring. Use Value: Enables single-chip power + safety solution meeting ASIL D requirements while reducing board area vs. discrete PMIC + monitor combinations. | Use Scenario: Manages power for multi-core MCU, camera ISP, Ethernet switch, and sensor fusion processors in zonal architecture. IC Role / Device Role / Timing Role: Centralized SBC coordinating rail startup/shutdown timing, voltage supervision, and fault propagation across subsystems. Use Value: Eliminates need for external watchdogs and discrete supervisors - reduces BOM count and improves functional safety certification efficiency. |
| Vision Processing Unit Supply | 12 V Automotive ECU |
Use Scenario: Supplies stereo camera module with 1.8 V image sensor core, 2.8 V analog front-end, and 3.3 V interface rails. IC Role / Device Role / Timing Role: Dual-LDO + BUCK regulator delivering low-noise, tightly regulated outputs with independent enable/control. Use Value: Achieves <1 % output voltage deviation under dynamic load steps - critical for pixel-level image fidelity and low noise floor. | Use Scenario: Powers body control module (BCM) with microcontroller, LIN transceivers, and LED drivers in 12 V passenger vehicle. IC Role / Device Role / Timing Role: Fail-safe SBC delivering 5 V system rail, 3.3 V MCU supply, wake-up detection, and battery voltage monitoring. Use Value: Supports ultra-low sleep current (10 µA typ.) and robust 36 V transient tolerance - extends battery life and ensures cold-crank reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fail-safe SBC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MFS8633BMDA0ESR2 | Includes ERRMON and FIN pins enabled (OTP variant); supports external IC failure monitoring and frequency sync. | Required when interfacing with companion PMICs needing ERRMON handshake or clock synchronization. | Select MFS8633BMDA0ESR2 if external IC monitoring or precise clock alignment is needed; otherwise MFS8632BMDA0ESR2 suffices for standard ASIL D domain control. |
| MFS8623BMDA0ESR2 | ASIL B rated (not ASIL D); same 36 V input, 15 A VPRE, and 10-channel monitoring capability. | Suitable for non-safety-critical sub-systems or cost-sensitive applications where ASIL D is not mandated. | Choose MFS8623BMDA0ESR2 only for ASIL B designs - MFS8632BMDA0ESR2 is mandatory for ASIL D compliance in radar/ADAS. |
Compared with MFS8633BMDA0ESR2, MFS8632BMDA0ESR2 omits ERRMON/FIN functionality but retains identical ASIL D safety architecture and power capability; versus MFS8623BMDA0ESR2, it adds full ASIL D certification, LBIST/ABIST, and challenger watchdog support - making it the only choice for production radar ECUs.
Availability
MFS8632BMDA0ESR2 is available at Aetrix Electronics and suitable for radar ECU development, ADAS domain controller prototyping, and 12 V automotive ECU production requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.
Supply support for MFS8632BMDA0ESR2 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 automotive MCUs and power management.
The FS86 family - including MFS8632BMDA0ESR2 - was developed to address scalable, ASIL-certified power and safety needs in next-generation domain controllers, radar systems, and electrification ECUs.
FAQ
What is the maximum input voltage rating for MFS8632BMDA0ESR2?
MFS8632BMDA0ESR2 supports a maximum input voltage of 36 V DC, optimized for 12 V battery network automotive applications. This rating applies to both VSUP1 and VSUP2 pins and includes robust transient protection up to −1.0 V / +36 V per the datasheet's maximum ratings table. The device is not rated for 60 V operation - that capability is reserved for FS86xx variants designated for 24 V networks (e.g., MFS8603/MFS8613).
Does MFS8632BMDA0ESR2 support ASIL D compliance out of the box?
Yes, MFS8632BMDA0ESR2 is fully qualified to ASIL D per ISO 26262, with built-in safety mechanisms including LBIST/ABIST, independent voltage monitoring circuitry, challenger watchdog support via FCCU inputs, and fail-safe outputs (PGOOD, RSTB, FS0B) featuring latent fault detection. Its A0 OTP configuration and D-grade temperature range (−40 °C to +125 °C) are validated for production ASIL D systems such as radar ECUs.
How many voltage rails can MFS8632BMDA0ESR2 monitor, and what is the accuracy?
MFS8632BMDA0ESR2 can monitor up to ten voltage rails with ±1 % accuracy across its VMON0_I2C through VMON9_RES inputs. This includes internal regulators (e.g., VPRE, BUCK, BOOST, LDO1, LDO2) and external rails via resistor-divider or DAC-based sensing. The ±1 % specification is guaranteed over temperature and process variation, enabling reliable QM rail supervision for ASIL D decomposition.
What package type and thermal performance does MFS8632BMDA0ESR2 use?
MFS8632BMDA0ESR2 uses the HPQFN48eP package - a 48-pin wettable flank QFN with exposed thermal pad. Its thermal resistance is rated at RθJA = 23 °C/W (2s6p layout) and RθJC_BOT = 1 °C/W, enabling efficient heat dissipation in high-power automotive applications. The exposed pad must be soldered to a solid GND plane for optimal thermal and electrical performance.
Is MFS8632BMDA0ESR2 pin-compatible with other FS86 family members?
Yes, MFS8632BMDA0ESR2 is pin-compatible with all FS86 family devices in the HPQFN48eP package, including MFS8623BMDA0ESR2 and MFS8633BMDA0ESR2. Pin functions are identical across variants; differentiation occurs via OTP programming (e.g., ERRMON/FIN enablement in MFS8633) and ASIL grade (B vs. D). No PCB redesign is required when migrating between these variants.
MFS8632BMDA0ESR2 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:
- 36V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 48-HVQFN (7x7)
MFS8632BMDA0ESR2 FAQ
1.How can I place an order for MFS8632BMDA0ESR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MFS8632BMDA0ESR2 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 MFS8632BMDA0ESR2 reliable?
The price and inventory of MFS8632BMDA0ESR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MFS8632BMDA0ESR2 is usually 5 days.
3.What payment methods are accepted for MFS8632BMDA0ESR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MFS8632BMDA0ESR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MFS8632BMDA0ESR2?
MFS8632BMDA0ESR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MFS8632BMDA0ESR2 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 MFS8632BMDA0ESR2?
For technical support, including MFS8632BMDA0ESR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MFS8632BMDA0ESR2 requirements.
6.How does Aetrix verify that MFS8632BMDA0ESR2 is sourced from the original manufacturer or authorized distributors?
All MFS8632BMDA0ESR2 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 MFS8632BMDA0ESR2 meets industry standards.
7.What is the process for return or replacement of MFS8632BMDA0ESR2?
All MFS8632BMDA0ESR2 units undergo pre-shipment inspection (PSI). If there is an issue with MFS8632BMDA0ESR2, 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 MFS8632BMDA0ESR2 part is unused and in its original packaging.
Return procedure for MFS8632BMDA0ESR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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