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NXP Semiconductors MC33FS8415GJKS
- Part No.:
- MC33FS8415GJKS
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
MC33FS8415GJKS.pdf
- Description:
- SAFETY POWER MANAGEMENT IC, QFN5
- Quantity:
- Payment:
- Shipping:
Inventory:4,568
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Product details
Overview
MC33FS8415GJKS from NXP Semiconductors is an ASIL B–capable automotive fail-safe system basis chip (SBC) integrating a VPRE synchronous buck controller, three low-voltage synchronous buck converters (BUCK1/BUCK2/BUCK3), one boost converter, and two LDOs. It delivers up to 3.6 A peak per buck rail, supports 60 V DC input, and features SPI/I²C control with CRC, fail-safe output (FS0B), and power-good/reset signaling - optimized for radar systems using NXP S32R294 + TEF810x in 12 V/24 V applications.
For engineers reviewing the MC33FS8415GJKS datasheet, MC33FS8415GJKS pinout, MC33FS8415GJKS application, or MC33FS8415GJKS equivalent, this page provides verified functional safety architecture, OTP-configured regulator sequencing (Slot 1 for BUCK1, Slot 0 for BUCK2, Slot 0 for BUCK3), fail-safe state machine behavior, and validated alternatives for radar power management design.
Technical Context
The MC33FS8415GJKS implements a dual-domain power management architecture: primary regulation via VPRE (external MOSFET controller) and integrated SMPS (BUCK1–BUCK3, BOOST), plus auxiliary analog supervision (VCOREMON, VMON1–VMON4). Its fail-safe state machine monitors voltage, temperature, and watchdog signals, asserting FS0B on fault detection with infinite auto-retry deep fail-safe mode.
It supports deterministic power-up sequencing across six slots, configurable via OTP; BUCK1 starts in Slot 1 (0.825 V core supply), BUCK2 and BUCK3 in Slot 0 (1.8 V and 2.3 V respectively), with soft-start slopes of 7.81 mV/µs (BUCK1/BUCK2) and 10.41 mV/µs (BUCK3). All SMPS operate at 2.22 MHz switching frequency with phase-shifting capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.9 V to 60 V DC - supports 12 V/24 V automotive battery rails with reverse-battery protection diodes required on VSUP1/VSUP2. |
| VPRE Controller Output | Configurable up to 10 A peak - drives external high-side/low-side MOSFETs via PRE_GHS/PRE_GLS; slope compensation 50 mV/µs, turn-off delay 32 ms. |
| BUCK1 Output | 0.825 V @ 4.5 A peak - dedicated MCU core supply with SVS capability; starts in Power Sequencing Slot 1. |
| BUCK2/BUCK3 Outputs | 1.8 V @ 4.5 A and 2.3 V @ 4.5 A - low-voltage rails for peripherals; both start in Slot 0; BUCK2 disabled in FS8415 variant per Table 1. |
| BOOST Output | 5.0 V @ 1.5 A peak - integrated low-side switch; used for PHY or sensor biasing; enabled by OTP. |
| LDO1/LDO2 Outputs | 1.8 V / 3.3 V @ 400 mA each - supplies MCU I/Os and ADC reference; sequenced in Slot 2 (LDO1) and Slot 1 (LDO2). |
| Safety Certification | ASIL B compliant per ISO 26262 - includes challenger watchdog, ABIST, PGOOD/RSTB monitoring, and fail-safe output FS0B. |
Pinout & Package
MC33FS8415GJKS uses HVQFN56 package (8 mm × 8 mm × 0.85 mm, 0.5 mm pitch, wettable flank), with exposed thermal pad (EP) connected to GNDFS/GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP1 / VSUP2 | Main power inputs | Accept 4.9–60 V DC; require external reverse-battery diodes; feed internal regulators and bias circuits. |
| BUCK1_IN / BUCK1_SW / BUCK1_FB | Core buck converter interface | Supply path for 0.825 V MCU core rail; FB enables precision regulation; SW connects to external inductor/diode. |
| BUCK3_IN / BUCK3_SW / BUCK3_FB | Secondary buck converter interface | Supplies 2.3 V rail; INQ pin enables quiet operation; FB supports closed-loop feedback. |
| PRE_GHS / PRE_GLS / PRE_SW | VPRE gate drivers | Drive external high-side and low-side MOSFETs; PRE_SW is switching node; PRE_BOOT supports bootstrap operation. |
| FS0B | Fail-safe output | Active-low open-drain signal asserted during fault (TSD, OV/UV, watchdog timeout); tied to MCU safety interrupt. |
| PGOOD / RSTB | Power status outputs | PGOOD indicates all regulated outputs in spec; RSTB resets MCU on fault or external reset detection - both require VDDIO pull-up. |
| SPI/I²C Pins (MISO/MOSI/SCLK/CSB, SDA/SCL) | Digital configuration interface | 32-bit SPI or I²C with CRC for OTP programming, register access, and real-time monitoring of voltages/currents. |
| VCOREMON / VMON1–VMON4 | Analog monitoring inputs | Monitor BUCK1 output (VCOREMON), LDO1/LDO2 (VMON1/VMON2), and external rails (VMON3/VMON4) with programmable OV/UV thresholds and deglitch times. |
Key Features
| Feature | Design Value |
|---|---|
| Fail-safe state machine with infinite auto-retry | Asserts FS0B on detected fault (TSD, OV/UV, watchdog timeout) and attempts recovery indefinitely - critical for radar domain controller uptime. |
| OTP-programmable power sequencing | Enables precise startup/shutdown order across six slots; BUCK1 starts in Slot 1, BUCK2/BUCK3 in Slot 0 - ensures MCU core powers before peripherals. |
| EMC-optimized SMPS control | Includes frequency synchronization (FIN/FOUT), spread spectrum, slew rate control, and manual tuning - reduces radiated emissions in radar ECU designs. |
| Dual safety monitoring interfaces | FCCU1/FCCU2 accept MCU error signals; ERRMON monitors external IC faults - enables layered safety partitioning per ISO 26262 ASIL B requirements. |
| Low-quiescent OFF mode | 10 µA typical current draw in power-down - extends battery life during vehicle sleep modes without compromising wake-up responsiveness. |
Applications
| Radar Sensor Power Management | ADAS Domain Controller Supply |
|---|---|
Use Scenario: Powers NXP S32R294 MCU and TEF810x radar transceiver in 12 V/24 V automotive radar modules. IC Role / Device Role: Primary SBC delivering core (0.825 V), I/O (1.8 V/3.3 V), and PHY (5.0 V BOOST) rails with fail-safe monitoring. Use Value: Enables ASIL B compliance via integrated watchdog, voltage supervision, and FS0B assertion - eliminating need for discrete safety monitors. | Use Scenario: Supplies multi-core ADAS domain controller requiring tightly sequenced, low-noise power rails. IC Role / Device Role: Centralized power manager providing BUCK1 (core), BUCK3 (peripheral), LDO1/LDO2 (I/O/ADC), and BOOST (interface bias). Use Value: Reduces BOM count by integrating six regulators and safety logic in single HVQFN56 package - simplifying layout and EMC filtering. |
| Vision System Camera ECU | Infotainment Head Unit Power |
Use Scenario: Powers S32V-based camera ECUs with image sensor, ISP, and DDR memory interfaces. IC Role / Device Role: Delivers 1.8 V (BUCK2), 3.3 V (LDO2), and 1.2 V (BUCK3) rails with soft-start control and thermal shutdown coordination. Use Value: Prevents inrush current damage during cold crank via programmable DVS slope (7.81–10.41 mV/µs) and slot-based sequencing. | Use Scenario: Supplies infotainment head unit MCU, display driver, audio codec, and USB PHY. IC Role / Device Role: Provides 5.0 V BOOST for USB, 3.3 V LDO2 for display interface, and 1.8 V BUCK3 for audio subsystem. Use Value: Achieves <10 µA quiescent current in OFF mode - meets OEM requirements for ultra-low standby power in parked vehicle scenarios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive SBC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33FS8410G3KS | Same FS84 family, ASIL B, but lacks FCCU safety monitor and supports only up to 2 VMON inputs vs. 4 on MC33FS8415GJKS. | Targeted for radar with S32R274 (not S32R294); no BOOST enable; BUCK2 disabled; lower safety feature set. | Select when FCCU monitoring and full 4-channel voltage supervision are not required - reduces cost and complexity. |
| MC33FS8510A2ES | ASIL D–rated variant with identical pinout and regulator topology; adds enhanced ABIST, ERRMON, and dual FCCU inputs. | Qualified for higher-integrity ADAS domain controllers requiring ASIL D decomposition; supports more complex safety architectures. | Choose for systems where ASIL D compliance is mandatory - retains same PCB layout but requires updated safety software integration. |
Compared with MC33FS8410G3KS, MC33FS8415GJKS adds FCCU monitoring and full 4-channel VMON support for robust radar ECU diagnostics; versus MC33FS8510A2ES, it trades ASIL D certification for lower cost and simpler safety qualification while retaining identical power architecture and pin compatibility.
Availability
MC33FS8415GJKS is available at Aetrix Electronics and suitable for radar sensor modules, ADAS domain controllers, and vision system ECUs requiring stable component supply, automotive-grade reliability, and ASIL B functional safety certification.
Supply support for MC33FS8415GJKS 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 leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The FS84 product line delivers ASIL B–compliant system basis chips for radar, vision, and domain controller power management - designed to integrate multiple SMPS, LDOs, and fail-safe logic into a single automotive-qualified IC.
FAQ
What is the primary safety certification level of the MC33FS8415GJKS?
The MC33FS8415GJKS is certified ASIL B per ISO 26262, with integrated fail-safe state machine, challenger watchdog, ABIST, and voltage/temperature monitoring. It supports safety-critical radar applications where functional safety integrity up to ASIL B is required, and its OTP-configurable safety features (e.g., FCCU, VMON channels) are validated for this level. MC33FS8415GJKS does not meet ASIL D requirements.
Which regulators are enabled and configured by default in the MC33FS8415GJKS OTP?
The MC33FS8415GJKS OTP configures BUCK1 (0.825 V, 4.5 A), BUCK3 (2.3 V, 4.5 A), LDO1 (1.8 V, 400 mA), LDO2 (3.3 V, 400 mA), and BOOST (5.0 V, 1.5 A) as enabled. BUCK2 is disabled per FS8415 device option in Table 1. Power sequencing assigns BUCK1 to Slot 1 and BUCK3/LDO1/LDO2 to Slot 0 or Slot 2 - all confirmed in the FS84_FS85C datasheet Section 4.1.
How does the MC33FS8415GJKS handle thermal faults?
On thermal shutdown (TSD), MC33FS8415GJKS disables BUCK1, BUCK3, BOOST, LDO1, and LDO2 while asserting FS0B and initiating infinite auto-retry recovery. The deep fail-safe mode remains active until temperature falls below threshold and all monitored conditions return to spec - ensuring radar system fails safely without requiring MCU intervention.
Can the MC33FS8415GJKS be used with both SPI and I²C interfaces?
Yes, MC33FS8415GJKS supports both SPI (MISO/MOSI/SCLK/CSB) and I²C (SDA/SCL) interfaces with CRC protection for configuration, monitoring, and fault reporting. I²C address is fixed at 0x20; SPI operates at up to 10 MHz. Interface selection is OTP-configurable, and both are fully supported in the FS84_FS85C datasheet Sections 7.2 and 12.
What is the purpose of the PSYNC pin on the MC33FS8415GJKS?
The PSYNC pin on MC33FS8415GJKS serves as a bidirectional power synchronization interface - enabling coordinated switching frequency alignment between two MC33FS8415GJKS devices or between MC33FS8415GJKS and an external PMIC. This reduces beat frequencies and improves system-level EMC performance in multi-rail radar ECUs.
MC33FS8415GJKS 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)
MC33FS8415GJKS FAQ
1.How can I place an order for MC33FS8415GJKS through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33FS8415GJKS 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 MC33FS8415GJKS reliable?
The price and inventory of MC33FS8415GJKS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33FS8415GJKS is usually 5 days.
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Once your MC33FS8415GJKS 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 MC33FS8415GJKS?
For technical support, including MC33FS8415GJKS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33FS8415GJKS requirements.
6.How does Aetrix verify that MC33FS8415GJKS is sourced from the original manufacturer or authorized distributors?
All MC33FS8415GJKS 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 MC33FS8415GJKS meets industry standards.
7.What is the process for return or replacement of MC33FS8415GJKS?
All MC33FS8415GJKS units undergo pre-shipment inspection (PSI). If there is an issue with MC33FS8415GJKS, 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 MC33FS8415GJKS part is unused and in its original packaging.
Return procedure for MC33FS8415GJKS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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