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NXP Semiconductors MC33FS8530A4KS
- Part No.:
- MC33FS8530A4KS
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
MC33FS8530A4KS.pdf
- Description:
- SAFETY POWER MANAGEMENT IC, QFN5
- Quantity:
- Payment:
- Shipping:
Inventory:3,241
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Product details
Overview
MC33FS8530A4KS from NXP Semiconductors is an ASIL D–compliant automotive fail-safe system basis chip (SBC) with three integrated synchronous buck converters (BUCK1/2/3), one boost converter, two LDOs, and comprehensive voltage monitoring/safety supervision. It delivers 1.1 V @ 4.5 A (BUCK1), 1.8 V @ 4.5 A (BUCK2), 3.3 V @ 4.5 A (BUCK3), 1.8 V @ 400 mA (LDO1), and 1.2 V @ 400 mA (LDO2), targeting imaging radar systems with NXP S32R MCUs. Its fail-safe output, dual watchdog, FCCU interface, and PGOOD/RSTB signals enable safety-critical power sequencing in radar ECU designs.
For engineers reviewing the MC33FS8530A4KS datasheet, MC33FS8530A4KS pinout, MC33FS8530A4KS application, or MC33FS8530A4KS equivalent, this page provides verified functional specifications, HVQFN56 pin mapping, ASIL D safety architecture details, OTP-configured regulator settings, and validated alternatives for radar power management subsystems.
Technical Context
The MC33FS8530A4KS implements a deterministic fail-safe state machine with independent monitoring circuitry, supporting both challenger and simple watchdog modes, and integrates ABIST/LBIST for on-chip self-test. Its power management includes configurable soft-start (7.81 mV/µs for BUCK1/2, 10.41 mV/µs for BUCK3), thermal shutdown response (BUCK1/2/3 shutdown + DFS), and deep fail-safe autoretry (infinite cycles).
It supports external frequency synchronization via FIN/FOUT pins, spread-spectrum modulation, and slew-rate control to meet stringent automotive EMC requirements. The device uses SPI or I²C (address 0x20) for configuration and status reporting, with dedicated VMON1–VMON4 inputs for multi-rail voltage supervision and VCOREMON/VDDIOMON monitoring with programmable OV/UV thresholds and deglitch times.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ASIL Level | ASIL D compliant per ISO 26262, qualified to AEC-Q100 Grade 1 (−40 °C to +125 °C) |
| Input Voltage Range | 60 V DC max input - supports 12 V and 24 V automotive battery architectures with reverse-battery protection diodes on VSUP1/VSUP2 |
| BUCK1 Output | 1.1 V @ 4.5 A peak, 2.22 MHz switching, configured for MCU core supply with SVS capability |
| BUCK2 Output | 1.8 V @ 4.5 A peak, 2.22 MHz switching, enabled and assigned to Slot 4 in power-up sequencing |
| BUCK3 Output | 3.3 V @ 4.5 A peak, 2.22 MHz switching, enabled and assigned to Slot 0 in power-up sequencing |
| LDO Outputs | LDO1: 1.8 V @ 400 mA; LDO2: 1.2 V @ 400 mA - both support configurable OV/UV monitoring and shutdown behavior |
| Safety Features | Fail-safe output (FS0B), dual FCCU inputs, PGOOD/RSTB, interrupt (INTB), built-in self-test (ABIST/LBIST), and infinite-deep-fail-safe autoretry |
Pinout & Package
HVQFN56 package: plastic thermal enhanced very thin quad flat package, 8 mm × 8 mm × 0.85 mm body, 0.5 mm pitch, wettable flank (dimple type for KS suffix), exposed pad (EP) connected to GNDFS/GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP1 / VSUP2 | Main power inputs | Accept 60 V DC max; require external reverse-battery protection diodes; feed internal regulators and bias circuits |
| BUCK1_SW / BUCK2_SW / BUCK3_SW | Switching node outputs | Drive external inductors; each connects to respective low-side MOSFET drain and exposed pad ground return path |
| PRE_GHS / PRE_GLS | VPRE gate drivers | Control external high-side/low-side MOSFETs for VPRE synchronous buck controller (4.1 V output, 130 mA drive) |
| VCOREMON / VDDIOMON / VMON1–VMON4 | Voltage monitoring inputs | Analog inputs for real-time rail supervision; support programmable OV/UV thresholds (e.g., VCOREMON UVTH = 88 %, OVTH = 112 %) |
| FS0B | Fail-safe output | Active-low open-drain signal indicating safety state; asserts during fault conditions to trigger system-level fail-safe action |
| PGOOD / RSTB / INTB | Status and control outputs | PGOOD confirms all regulated rails in spec; RSTB resets MCU on fault; INTB signals configurable events (e.g., TSD, OV) |
| SPI/I²C Pins (MISO/MOSI/SCLK/CSB, SCL/SDA) | Digital interfaces | Configurable communication: SPI (32-bit, CRC) or I²C (0x20 address); enable OTP programming, register read/write, and fault logging |
| WAKE1 / WAKE2 | td>Wake-up inputsAsynchronous wake sources; require external series resistor if used as global wake pins; support low-quiescent-current OFF mode (10 µA typ) |
Key Features
| Feature | Design Value |
|---|---|
| Triple integrated buck regulators | BUCK1 (1.1 V/4.5 A), BUCK2 (1.8 V/4.5 A), BUCK3 (3.3 V/4.5 A) - all operate at 2.22 MHz with independent soft-start and thermal shutdown behavior |
| Fail-safe architecture | Dedicated fail-safe state machine with infinite autoretry, FS0B output, dual FCCU monitoring inputs, and ABIST/LBIST for ISO 26262 ASIL D compliance |
| EMC-optimized switching | Frequency synchronization (FIN/FOUT), spread spectrum, slew rate control, and manual tuning - reduces radiated emissions in radar ECU environments |
| OTP-configurable power sequencing | Regulator start/stop slots assigned per rail (e.g., BUCK3 in Slot 0, BUCK2 in Slot 4); enables precise timing control for S32R MCU boot sequence |
| Multi-rail voltage supervision | Seven analog monitor inputs (VCOREMON, VDDIOMON, VMON1–VMON4) with programmable OV/UV thresholds, deglitch times, and shutdown actions per rail |
| Low-power OFF mode | 10 µA typical quiescent current; retains wake-up capability via WAKE1/WAKE2; supports rapid system wake without full re-initialization |
Applications
| Imaging Radar ECU | Radar Domain Controller |
|---|---|
|
Use Scenario: Powering NXP S32R294-based 77 GHz imaging radar modules with multiple sensor chains and high-speed data processing. IC Role / Device Role / Timing Role: Primary SBC providing core (1.1 V), I/O (1.8 V), and interface (3.3 V) rails; sequences startup before MCU firmware execution; monitors all supplies continuously. Use Value: Enables ASIL D-compliant power delivery with deterministic fail-safe response, eliminating need for discrete supervisors and reducing BOM count by 3+ components. |
Use Scenario: Supplying domain controllers integrating radar preprocessing, sensor fusion, and CAN FD gateway functions in zonal architectures. IC Role / Device Role / Timing Role: Centralized power manager delivering regulated voltages to radar SoC, CAN transceivers, and external PMICs via PSYNC; synchronizes switching frequencies across devices. Use Value: Reduces system-level EMI through synchronized SMPS operation and supports fail-safe handover between primary and backup controllers via FCCU monitoring. |
| Automotive Camera-Radar Fusion | ADAS Sensor Hub |
|
Use Scenario: Consolidating power for co-located radar and stereo camera modules sharing common processing hardware. IC Role / Device Role / Timing Role: Supplies BUCK1 (MCU core), BUCK2 (image sensor I/O), BUCK3 (radar interface), LDO1 (ADC reference), and LDO2 (PHY supply) with coordinated sequencing and monitoring. Use Value: Eliminates cross-rail interference via independent soft-start and deglitching; ensures simultaneous readiness of radar and vision subsystems at boot. |
Use Scenario: Powering multi-sensor hubs aggregating inputs from corner radars, ultrasonic sensors, and surround-view cameras. IC Role / Device Role / Timing Role: Provides isolated, monitored rails for each sensor interface while enabling centralized fault reporting via INTB and FS0B to host MCU. Use Value: Simplifies safety case documentation by consolidating ASIL D monitoring into single IC, reducing validation effort for multi-sensor integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive SBC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33FS8530A0KS | Non-programmed OTP version; requires field programming for BUCK1/2/3 voltages, sequencing, and safety settings | Targeted for prototyping and custom configuration development; not pre-validated for imaging radar use cases | Select MC33FS8530A4KS for production-ready imaging radar deployment; choose A0KS only when custom OTP configuration is required and NXP GUI programming is available. |
| MC33FS8520A0KS | Omits BUCK3 regulator; supports only BUCK1 + BUCK2 + BOOST + LDOs; lower pin count and reduced feature set | Suitable for radar ECUs requiring fewer output rails (e.g., single-band radar without companion processor or PHY) | Choose MC33FS8530A4KS when 3.3 V BUCK3 rail is needed for radar interface or companion logic; select FS8520 only if BUCK3 is unused and cost reduction is critical. |
Compared with MC33FS8530A0KS and MC33FS8520A0KS, the MC33FS8530A4KS delivers production-validated OTP settings for imaging radar (1.1 V/1.8 V/3.3 V rails, Slot 0/4/0 sequencing), eliminates post-manufacturing programming, and supports full ASIL D safety partitioning with all three bucks enabled and monitored.
Availability
MC33FS8530A4KS is available at Aetrix Electronics and suitable for imaging radar, ADAS domain controllers, and automotive sensor fusion systems requiring stable component supply, long-term automotive qualification, and ASIL D safety certification.
Supply support for MC33FS8530A4KS 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 FS85 family, including MC33FS8530A4KS, was designed specifically for ASIL D automotive power management in radar, vision, and domain controller applications - integrating safety monitoring, multi-rail regulation, and EMC optimization into a single HVQFN56 package.
FAQ
What is the primary application target for the MC33FS8530A4KS?
The MC33FS8530A4KS is specifically targeted at imaging radar electronic control units using NXP S32R MCUs. Its OTP configuration delivers 1.1 V (BUCK1), 1.8 V (BUCK2), and 3.3 V (BUCK3) rails with Slot 0/4/0 power-up sequencing, optimized voltage monitoring thresholds, and fail-safe signaling required for ASIL D radar systems.
Does the MC33FS8530A4KS support both SPI and I²C interfaces?
Yes, the MC33FS8530A4KS supports both SPI and I²C communication protocols. It uses SPI (32-bit with CRC) or I²C (7-bit address 0x20) for configuration, status monitoring, and fault logging. Interface selection is determined by hardware strap or register setting, and both support full register access to safety and power management functions.
What safety certifications does the MC33FS8530A4KS hold?
The MC33FS8530A4KS is developed in compliance with ISO 26262 for ASIL D applications and qualified per AEC-Q100 Grade 1 (−40 °C to +125 °C). It includes ABIST/LBIST, dual watchdog modes (challenger/simple), FCCU monitoring inputs, fail-safe output (FS0B), and deterministic state machine behavior - all verified for automotive safety-critical power management.
How does the MC33FS8530A4KS handle thermal faults?
Upon thermal shutdown detection, the MC33FS8530A4KS executes rail-specific responses: BUCK1, BUCK2, and BUCK3 shut down individually and assert deep fail-safe (DFS) mode, while LDO1/LDO2 also shut down. The fail-safe state machine activates FS0B, and infinite autoretry attempts recovery without external intervention - a key requirement for unattended radar operation.
What is the function of the PSYNC pin on the MC33FS8530A4KS?
The PSYNC pin on the MC33FS8530A4KS serves as a bidirectional power synchronization interface, enabling frequency alignment between two MC33FS8530A4KS devices or between an MC33FS8530A4KS and an external PMIC. This reduces beat-frequency noise and improves system-level EMC performance in multi-rail radar power architectures.
MC33FS8530A4KS 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)
MC33FS8530A4KS FAQ
1.How can I place an order for MC33FS8530A4KS through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33FS8530A4KS 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 MC33FS8530A4KS reliable?
The price and inventory of MC33FS8530A4KS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33FS8530A4KS is usually 5 days.
3.What payment methods are accepted for MC33FS8530A4KS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33FS8530A4KS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33FS8530A4KS?
MC33FS8530A4KS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33FS8530A4KS 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 MC33FS8530A4KS?
For technical support, including MC33FS8530A4KS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33FS8530A4KS requirements.
6.How does Aetrix verify that MC33FS8530A4KS is sourced from the original manufacturer or authorized distributors?
All MC33FS8530A4KS 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 MC33FS8530A4KS meets industry standards.
7.What is the process for return or replacement of MC33FS8530A4KS?
All MC33FS8530A4KS units undergo pre-shipment inspection (PSI). If there is an issue with MC33FS8530A4KS, 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 MC33FS8530A4KS part is unused and in its original packaging.
Return procedure for MC33FS8530A4KS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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