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NXP Semiconductors MFS8620BMBA0ESR2
- Part No.:
- MFS8620BMBA0ESR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MFS8620BMBA0ESR2.pdf
- Description:
- SAFETY SYSTEM BASIS CHIP FOR DOM
- Quantity:
- Payment:
- Shipping:
Inventory:4,569
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Product details
Overview
MFS8620BMBA0ES from NXP Semiconductors is a fail-safe system basis chip (SBC) designed for 12 V automotive battery networks, integrating a high-voltage buck controller (VPRE), low-voltage boost converter (BOOST), synchronous buck regulator (BUCK), two LDOs (LDO1/LDO2), and ten-channel voltage monitoring with ±1 % accuracy. It delivers ASIL B functional safety compliance, supports wake-up detection on two pins, and enables synchronized power sequencing via XFAILB in domain controllers for radar and ADAS applications.
For engineers reviewing the MFS8620BMBA0ES datasheet, MFS8620BMBA0ES pinout, MFS8620BMBA0ES application, or MFS8620BMBA0ES equivalent, this page provides verified technical context, exact pin functions, real-world use cases in electrified vehicle subsystems, and validated alternative options for safety-critical power management design.
Technical Context
The MFS8620BMBA0ES implements a leader/follower power-up sequencing architecture coordinated through the XFAILB pin, enabling cascaded SBC/PMIC systems to behave as one synchronized unit. Its fail-safe state machine independently monitors ten voltage rails-including external PMIC outputs-using dedicated analog multiplexer (AMUX) and DAC/resistor-bridge inputs (VMON0–VMON9), with configurable 10 ms RSTB release delay for MCU compliance.
It features a 32-bit I²C interface with 8-bit CRC for device configuration and watchdog monitoring, plus dual FCCU inputs (FCCU1/FCCU2) for PWM-based MCU hardware failure detection. The integrated e-fuse protection in the VPRE controller shuts down system power during overcurrent events, while ERRMON provides external IC failure monitoring capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 36 V max for 12 V battery network; supports operation down to 4.5 V with VPRE = 3.3 V |
| VPRE Output | Configurable 3.3–5.0 V, up to 15 A DC with external FETs and e-fuse protection |
| BOOST Output | Configurable 5–6 V, up to 1 A DC with integrated low-side FET |
| BUCK Output | Configurable 1.0–3.3 V, up to 2.5 A DC with integrated synchronous rectification |
| LDO1/LDO2 | LDO1: 1.5–5.0 V / 400 mA; LDO2: 1.1–5.0 V / 400 mA; both support load switch capability |
| Voltage Monitoring | 10 inputs (VMON0–VMON9) with ±1 % accuracy for internal and external rail supervision |
| Functional Safety | ASIL B compliant per ISO 26262; includes LBIST/ABIST, dedicated watchdog, and latent fault detection on PGOOD/RSTB/FS0B |
Pinout & Package
Package: HPQFN48eP - 48-pin plastic thermally enhanced very thin quad flat package with wettable flanks and exposed pad (EP) connected to GND for optimized thermal management (RθJB = 10 °C/W in 2s6p layout).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP1/VSUP2 | Power supply input | Main device power inputs requiring external reverse-battery diode; rated to 36 V for 12 V network |
| VPRE-related pins (PRE_SW, PRE_GHS, PRE_GLS, PRE_FB, PRE_CSP, PRE_CSN, PRE_COMP, PRE_BOOT) | High-voltage buck controller interface | Support external 15 A buck stage with gate drive, current sense, feedback, compensation, and bootstrap |
| BUCK_SW / BUCK_IN / BUCK_FB | Integrated buck regulator interface | Switching node, input supply, and feedback for 2.5 A synchronous buck output |
| LDO1 / LDO1_IN / LDO2 | Linear regulator outputs and input | LDO1 delivers up to 400 mA with load switch; LDO2 supplies 400 mA for MCU I/O and peripherals |
| VMON0_I2C to VMON9_RES | Voltage monitoring inputs | 10 dedicated analog inputs supporting DAC-based (VMON1–3) and resistor-bridge (VMON4–9) rail supervision |
| XFAILB | Power synchronization I/O | Enables leader/follower sequencing with other NXP low-voltage PMICs for synchronized startup/shutdown |
| PGOOD / RSTB / FS0B | Fail-safe outputs | Open-drain active-low signals for power status, MCU reset, and fail-safe state assertion with latent fault detection |
| I²C (SDA/SCL) | Configuration & monitoring interface | 32-bit addressable bus with 8-bit CRC for OTP configuration, watchdog control, and AMUX channel selection |
Key Features
| Feature | Design Value |
|---|---|
| BYLink system power platform integration | Enables cascaded SBC/PMICs to operate as one synchronized unit for scalable domain controller power architectures |
| 10-channel ±1 % voltage monitoring | Allows QM rails from non-NXP components to be supervised within ASIL B safety concept without additional ICs |
| Configurable 10 ms RSTB release delay | Ensures compatibility with MCUs requiring extended reset assertion time during power-up sequencing |
| EMC-optimized switching regulators | Incorporates spread spectrum, slew rate control, and manual frequency tuning to meet IEC 61967-4/62132-4 and FMC1278 emission/immunity standards |
| OTP-programmable configuration | Enables device customization for specific application requirements (e.g., FIN/VMON9_RES exclusivity, watchdog mode) without hardware change |
Applications
| Radar Domain Controller | ADAS Camera Module |
|---|---|
Use Scenario: Power management and safety supervision for 77 GHz radar SoC in front-end sensor clusters. IC Role / Device Role / Timing Role: System basis chip providing regulated VPRE (5 V @ 10 A), BOOST (5.5 V @ 0.8 A), BUCK (1.2 V @ 2.2 A), and LDOs for RF, digital, and analog subsystems; monitors all rails including radar transceiver supply. Use Value: Enables single-chip power + safety solution meeting ASIL B requirements while reducing board area vs. discrete PMIC + monitor combinations. |
Use Scenario: Power sequencing and fault detection for stereo camera ECU with dual image sensors and ISP. IC Role / Device Role / Timing Role: Supplies core voltage (BUCK), I/O rails (LDO1/LDO2), and auxiliary bias (BOOST); sequences power-up using XFAILB to coordinate with companion SBCs in multi-camera systems. Use Value: Eliminates need for external reset supervisors and discrete voltage monitors, lowering BOM count and improving diagnostic coverage for ISO 26262 compliance. |
| Electric Power Steering (EPS) ECU | Vehicle Gateway Module |
Use Scenario: High-reliability power delivery and fail-safe signaling for motor control MCU and gate drivers in EPS systems. IC Role / Device Role / Timing Role: Delivers robust VPRE (4.5 V @ 12 A) with e-fuse shutdown, monitors MCU core and peripheral rails, asserts FS0B on detected fault to disable H-bridge drivers. Use Value: Provides hardware-level fail-safe response independent of software, satisfying ASIL B torque-limiting and safe-state transition requirements. |
Use Scenario: Centralized power management for multi-protocol gateway handling CAN FD, Ethernet, and LIN interfaces. IC Role / Device Role / Timing Role: Powers communication PHYs (via BOOST/LDO2), MCU core (BUCK), and I/O (LDO1); uses AMUX to monitor external transceiver supplies and report faults via I²C. Use Value: Consolidates power, monitoring, and safety into one AEC-Q100 qualified component, simplifying layout and reducing interconnect complexity in space-constrained gateways. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fail-safe power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MFS8623BMBA0ES | Includes integrated BUCK regulator (vs. MFS8620BMBA0ES which omits BUCK); same ASIL B rating, 36 V input, OTP A0 | Required when 2.5 A low-voltage buck output is needed alongside VPRE/BOOST/LDOs; not drop-in due to different internal regulator set | Select MFS8623BMBA0ES only if BUCK functionality is required; verify PCB layout supports identical pinout but different internal routing |
| MFS8633BMBA0ES | ASIL D rated (vs. ASIL B), adds FIN pin for frequency synchronization and ERRMON capability; same 36 V input, OTP A0 | Suitable for higher-integrity domains like central ADAS compute where challenger watchdog and external IC failure monitoring are mandatory | Choose MFS8633BMBA0ES when ASIL D compliance is required; note that FIN/VMON9_RES exclusivity must be configured via OTP |
Compared with MFS8620BMBA0ES, MFS8623BMBA0ES adds an integrated buck stage for expanded regulation capability, while MFS8633BMBA0ES upgrades to ASIL D with enhanced monitoring features-neither is pin-compatible without OTP and layout review, and both require functional validation for safety-critical deployment.
Availability
MFS8620BMBA0ES is available at Aetrix Electronics and suitable for automotive domain controllers, radar sensor modules, and ADAS camera ECUs requiring stable component supply, AEC-Q100 qualification, and ASIL B functional safety compliance.
Supply support for MFS8620BMBA0ES 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 processors and power management ICs.
The FS86 family-including MFS8620BMBA0ES-is engineered for domain controller power architectures in ADAS, radar, and vehicle electrification, delivering scalable safety, synchronized sequencing, and integrated voltage supervision in a single package.
FAQ
What is the maximum input voltage rating for MFS8620BMBA0ES?
MFS8620BMBA0ES is rated for 36 V maximum DC input voltage, optimized for 12 V automotive battery networks. This rating applies to VSUP1 and VSUP2 pins, and requires external reverse-battery protection diodes in series per the datasheet. Exceeding 36 V may cause permanent damage.
Does MFS8620BMBA0ES include an integrated buck converter?
No, MFS8620BMBA0ES does not include an integrated buck converter. Per Table 1 in the FS8600_SDS, the FS8620 variant supports VPRE, BOOST, and LDOs but omits the BUCK regulator. That function is present in MFS8623BMBA0ES and MFS8633BMBA0ES variants.
How many voltage monitoring inputs does MFS8620BMBA0ES support?
MFS8620BMBA0ES supports ten voltage monitoring inputs (VMON0 through VMON9), with ±1 % accuracy across the full operating range. These include DAC-based inputs (VMON1–VMON3) and resistor-bridge inputs (VMON4–VMON9), enabling supervision of both internal regulators and external PMIC rails.
What safety certifications apply to MFS8620BMBA0ES?
MFS8620BMBA0ES is developed in compliance with ISO 26262 for automotive functional safety and qualified per AEC-Q100 Grade 1 (−40 °C to 125 °C ambient). It achieves ASIL B compliance through independent voltage monitoring, built-in self-tests (LBIST/ABIST), and fail-safe outputs with latent fault detection.
Can MFS8620BMBA0ES be used in 24 V battery network applications?
No, MFS8620BMBA0ES is specifically designed for 12 V battery networks with a 36 V maximum input rating. For 24 V networks (60 V max), NXP offers the MFS861x series (e.g., MFS8613BMBA0ES). Using MFS8620BMBA0ES in a 60 V environment violates its absolute maximum ratings and risks permanent damage.
MFS8620BMBA0ESR2 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)
MFS8620BMBA0ESR2 FAQ
1.How can I place an order for MFS8620BMBA0ESR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MFS8620BMBA0ESR2 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 MFS8620BMBA0ESR2 reliable?
The price and inventory of MFS8620BMBA0ESR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MFS8620BMBA0ESR2 is usually 5 days.
3.What payment methods are accepted for MFS8620BMBA0ESR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MFS8620BMBA0ESR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MFS8620BMBA0ESR2?
MFS8620BMBA0ESR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MFS8620BMBA0ESR2 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 MFS8620BMBA0ESR2?
For technical support, including MFS8620BMBA0ESR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MFS8620BMBA0ESR2 requirements.
6.How does Aetrix verify that MFS8620BMBA0ESR2 is sourced from the original manufacturer or authorized distributors?
All MFS8620BMBA0ESR2 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 MFS8620BMBA0ESR2 meets industry standards.
7.What is the process for return or replacement of MFS8620BMBA0ESR2?
All MFS8620BMBA0ESR2 units undergo pre-shipment inspection (PSI). If there is an issue with MFS8620BMBA0ESR2, 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 MFS8620BMBA0ESR2 part is unused and in its original packaging.
Return procedure for MFS8620BMBA0ESR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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