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NXP Semiconductors MC33FS8430G0KS
- Part No.:
- MC33FS8430G0KS
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
MC33FS8430G0KS.pdf
- Description:
- SAFETY POWER MANAGEMENT IC, QFN5
- Quantity:
- Payment:
- Shipping:
Inventory:3,738
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Product details
Overview
MC33FS8430G0KS from NXP Semiconductors is an ASIL B–capable automotive fail-safe system basis chip integrating three synchronous buck converters (BUCK1/BUCK2/BUCK3), one boost converter, two LDOs, and comprehensive safety monitoring. It delivers up to 3.6 A peak per buck rail, supports 60 V DC input, features SPI/I²C interface with CRC, and operates in radar and vision ADAS applications requiring functional safety.
For engineers reviewing the MC33FS8430G0KS datasheet, MC33FS8430G0KS pinout, MC33FS8430G0KS application, or MC33FS8430G0KS equivalent, key selection criteria include its triple-buck topology, fail-safe output (FS0B), integrated voltage supervision (VCOREMON, VMON1–VMON4), and OTP-configurable power-up sequencing for S32V-based camera systems.
Technical Context
The MC33FS8430G0KS implements a deterministic safety state machine with dedicated fail-safe output (FS0B), challenger watchdog, and ABIST/LBIST self-test capabilities. Its power architecture includes independent control loops for BUCK1 (MCU core), BUCK2 (IO supply), and BUCK3 (peripheral rail), each configurable for output voltage, current limit, soft-start slope, and power sequencing slot assignment.
EMC optimization is achieved via frequency synchronization (FIN/FOUT), spread spectrum modulation, slew rate control on gate drivers (PRE_GHS/PRE_GLS), and phase shifting across buck regulators. Safety-critical monitoring covers overvoltage/undervoltage detection (OVTH/UVTH) with programmable deglitch times (OV_DGLT/UV_DGLT) on five analog inputs (VCOREMON, VMON1–VMON4).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.9 V to 60 V DC - supports 12 V and 24 V automotive battery rails with reverse-battery protection diodes required on VSUP1/VSUP2. |
| BUCK1 Output | 1.8 V @ 4.5 A peak - configured for MCU core supply with SVS capability and power sequencing slot 0. |
| BUCK2 Output | 1.8 V @ 4.5 A peak - enabled, assigned to VDDIO, with multiphase disabled and TSD shutdown + DFS behavior. |
| BUCK3 Output | 3.3 V @ 4.5 A peak - enabled, assigned to VDDIO, with DVS soft-start slope of 10.41 mV/µs and slot 0 sequencing. |
| LDO1/LDO2 | 1.8 V / 3.3 V @ 400 mA each - dual linear regulators for MCU I/O and ADC supply with independent OV/UV monitoring. |
| Safety Certification | ISO 26262 ASIL B compliant - qualified per AEC-Q100 Grade 1 (−40 °C to +125 °C), with fail-safe output FS0B and built-in self-test. |
| Interface | SPI or I²C (0x20 address) with CRC - enables configuration, real-time monitoring, and fault reporting to host MCU. |
Pinout & Package
MC33FS8430G0KS is housed in a HVQFN56 package (8 mm × 8 mm × 0.85 mm, 0.5 mm pitch, wettable flank), thermally enhanced with exposed pad (EP) connected to GNDFS/GND. Pin count and function align with FS8430 superset configuration per Table 1 and Figure 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FS0B (Pin 14) | Fail-safe output | Active-low open-drain signal indicating safety violation; drives external system shutdown or MCU reset path. |
| VCOREMON (Pin 17) | Core voltage monitor input | Direct connection to BUCK1 output enables precise SVS and over/under-voltage detection for MCU core rail. |
| BUCK1_FB (Pin 39) | Voltage feedback | Resistor-divider input for closed-loop regulation of BUCK1 output; sets 1.8 V nominal with ±1% accuracy. |
| PSYNC (Pin 38) | Power sync I/O | Enables synchronized switching with second FS85 device or external PMIC to reduce system-level EMI peaks. |
| INTB (Pin 33) | Interrupt output | Active-low signal alerts host MCU of fault events (e.g., thermal shutdown, OV/UV, watchdog timeout) without polling. |
| WAKE1/WAKE2 (Pins 49/1) | Wake-up inputs | Analog/digital inputs with external series resistor support low-power wake-from-sleep entry for radar/vision modules. |
Key Features
| Feature | Design Value |
|---|---|
| Triple synchronous buck regulators | BUCK1/BUCK2/BUCK3 independently configurable for voltage, current limit, soft-start, and sequencing slot-enabling optimized power tree for S32V camera SoCs. |
| Fail-safe state machine | Dedicated hardware FSM with FS0B output, challenger watchdog, and ABIST/LBIST - eliminates software dependency for critical safety responses. |
| Multi-rail voltage supervision | Five analog monitors (VCOREMON, VMON1–VMON4) with programmable OV/UV thresholds and deglitch timers - ensures robust detection of rail faults before system failure. |
| EMC-optimized switching | Frequency sync (FIN/FOUT), spread spectrum, and gate driver slew control - reduces conducted/emission peaks for CISPR 25 Class 5 compliance in radar modules. |
| OTP-configurable sequencing | Power-up order, timing, and enable/disable behavior stored in one-time-programmable memory - eliminates external sequencing IC and firmware dependencies. |
Applications
| Radar Sensor Power Management | Camera Module Power System |
|---|---|
Use Scenario: Powers NXP S32R274/S32R294 radar SoCs in corner or imaging radar units with strict EMC and functional safety requirements. IC Role / Device Role / Timing Role: Primary power management IC delivering regulated rails (1.8 V core, 3.3 V I/O, 5.0 V PHY) while synchronizing switching frequency with RF front-end to minimize interference. Use Value: Integrated fail-safe output (FS0B) and ASIL B compliance eliminate need for external safety monitor, reducing BOM count by ≥2 components. | Use Scenario: Supplies NXP S32V234-based mono/stereo camera modules in ADAS vision systems requiring low-noise, high-efficiency power conversion. IC Role / Device Role / Timing Role: System basis chip providing BUCK1 (1.8 V core), BUCK2 (1.8 V I/O), BUCK3 (3.3 V sensor/ISP), LDO1/LDO2 (ADC/analog bias), and precise voltage supervision. Use Value: Triple-buck architecture with 2.22 MHz switching enables compact 2-layer PCB design; OTP sequencing eliminates boot-time race conditions during cold start. |
| ADAS Domain Controller Supply | Infotainment Head Unit Power |
Use Scenario: Powers multi-core domain controllers (e.g., S32G) in zonal architectures where centralized power integrity and safety are mandatory. IC Role / Device Role / Timing Role: Centralized PMIC managing core, memory, and interface rails with coordinated power-up/down sequencing and real-time health monitoring via SPI. Use Value: PSYNC pin enables synchronization with secondary PMICs, reducing system-level ripple and simplifying EMI filter design across multiple voltage domains. | Use Scenario: Delivers stable, low-noise power to infotainment head units with display, audio DSP, and connectivity (Wi-Fi/Bluetooth) subsystems. IC Role / Device Role / Timing Role: Provides isolated, filtered supplies (LDO1 for audio codec, LDO2 for display interface) alongside buck rails for application processor and memory. Use Value: Dual LDOs with 400 mA capacity and independent OV/UV monitoring ensure clean, reliable power for sensitive analog circuits without external supervision ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33FS8420G0KS | Omits BUCK3 regulator; supports only BUCK1 + BUCK2 outputs. | Targeted at dual-rail applications (e.g., simpler radar sensors without auxiliary peripherals). | Select when BUCK3 is unnecessary to reduce cost and layout area; verify sequencing compatibility with existing firmware. |
| MC33FS8435G0KS | Adds FCCU (Fault Collection and Control Unit) for enhanced MCU error monitoring and fault recovery. | Required for systems needing autonomous fault containment and retry logic without host MCU intervention. | Choose when deep fail-safe autoretry (x15) and ERRMON input integration are mandatory for ASIL B+ system partitioning. |
Compared with MC33FS8420G0KS and MC33FS8435G0KS, the MC33FS8430G0KS provides balanced functionality: full triple-buck capability without FCCU overhead, making it optimal for camera and mid-tier radar systems where BUCK3 powers image signal processors or transceivers but advanced fault recovery is handled by the host SoC.
Availability
MC33FS8430G0KS is available at Aetrix Electronics and suitable for radar sensor modules, automotive camera systems, and ADAS domain controllers requiring stable component supply, long-term automotive qualification, and functional safety compliance.
Supply support for MC33FS8430G0KS 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 microcontrollers and power management.
The FS84 family-including MC33FS8430G0KS-is designed specifically for ASIL B automotive applications such as radar, vision, and domain controllers, emphasizing integrated safety, EMC robustness, and configurability via OTP and serial interface.
FAQ
What is the maximum input voltage rating for the MC33FS8430G0KS?
The MC33FS8430G0KS supports a maximum input voltage of 60 V DC across VSUP1 and VSUP2 pins. This rating accommodates both 12 V and 24 V automotive battery systems, provided external reverse-battery protection diodes are placed in series with each supply input as specified in the datasheet.
Does the MC33FS8430G0KS support SPI and I²C interfaces simultaneously?
No, the MC33FS8430G0KS supports either SPI or I²C communication-not both concurrently. The interface is selected at power-up via hardware strapping or OTP configuration; default I²C address is 0x20, and SPI uses standard four-wire protocol with CSB, SCLK, MOSI, and MISO signals.
How is the fail-safe output (FS0B) triggered on the MC33FS8430G0KS?
The FS0B pin on the MC33FS8430G0KS is asserted low upon detection of critical faults including thermal shutdown (TSD), overvoltage/undervoltage on monitored rails (VCOREMON, VMON1–VMON4), watchdog timeout, or internal safety state machine violation. It remains active until cleared by power cycle or safe reset sequence.
What buck regulators are enabled and configured in the MC33FS8430G0KS OTP variant?
The MC33FS8430G0KS OTP variant enables all three buck regulators: BUCK1 (1.8 V, 4.5 A peak, slot 0), BUCK2 (1.8 V, 4.5 A peak, slot 0), and BUCK3 (3.3 V, 4.5 A peak, slot 0). Each includes configurable soft-start, current limit, and TSD response (shutdown + DFS).
Is the MC33FS8430G0KS pin-compatible with other FS84 family members?
Yes, all FS84 devices-including MC33FS8430G0KS-are pin-to-pin and software compatible per the datasheet. This allows direct substitution within the same package (HVQFN56), though OTP configuration and enabled features (e.g., BUCK3 presence) differ between variants and must be verified for functional equivalence.
MC33FS8430G0KS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 56-VFQFN Exposed Pad
- Packaging:
- Tray
- 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:
- 56-HVQFN (8x8)
MC33FS8430G0KS FAQ
1.How can I place an order for MC33FS8430G0KS through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33FS8430G0KS 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 MC33FS8430G0KS reliable?
The price and inventory of MC33FS8430G0KS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33FS8430G0KS is usually 5 days.
3.What payment methods are accepted for MC33FS8430G0KS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33FS8430G0KS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33FS8430G0KS?
MC33FS8430G0KS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33FS8430G0KS 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 MC33FS8430G0KS?
For technical support, including MC33FS8430G0KS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33FS8430G0KS requirements.
6.How does Aetrix verify that MC33FS8430G0KS is sourced from the original manufacturer or authorized distributors?
All MC33FS8430G0KS 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 MC33FS8430G0KS meets industry standards.
7.What is the process for return or replacement of MC33FS8430G0KS?
All MC33FS8430G0KS units undergo pre-shipment inspection (PSI). If there is an issue with MC33FS8430G0KS, 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 MC33FS8430G0KS part is unused and in its original packaging.
Return procedure for MC33FS8430G0KS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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