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NXP Semiconductors MC33FS8415G0KS
- Part No.:
- MC33FS8415G0KS
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
MC33FS8415G0KS.pdf
- Description:
- SAFETY POWER MANAGEMENT IC, QFN5
- Quantity:
- Payment:
- Shipping:
Inventory:3,186
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Product details
Overview
MC33FS8415G0KS from NXP Semiconductors is an ASIL B–capable automotive fail-safe system basis chip (SBC) integrating a VPRE synchronous buck controller, one low-voltage integrated synchronous BUCK1 (1.1 V, 4.5 A peak), one BUCK3 (2.3 V, 4.5 A peak), a BOOST converter (5.0 V, 1.5 A peak), and two LDOs (LDO1: 1.8 V/400 mA; LDO2: 3.3 V/400 mA). It serves as the primary power management unit for radar modules with NXP S32R294 + TEF810x in 12 V/24 V applications.
For engineers reviewing the MC33FS8415G0KS datasheet, MC33FS8415G0KS pinout, MC33FS8415G0KS application, or MC33FS8415G0KS equivalent, key selection criteria include its ASIL B safety certification, OTP-configurable multi-rail sequencing (BUCK1/BUCK3/LDOs in slots 0, 1, 0 respectively), fail-safe output (FS0B), SPI/I²C interface with CRC, and EMC-optimized frequency synchronization (FIN/FOUT).
Technical Context
The MC33FS8415G0KS implements a hierarchical safety architecture with dedicated monitoring circuitry, including VCOREMON, VDDIOMON, VMON1–VMON4, and a simple watchdog. Its power-up sequencing is fully configurable via OTP, assigning BUCK1 to slot 0, BUCK3 to slot 0, and LDO1/LDO2 to slots 2 and 1 respectively - enabling deterministic startup for radar SoCs.
It supports external frequency synchronization (FIN/FOUT), spread-spectrum modulation, and slew-rate control to meet stringent automotive EMC requirements. The device integrates a fail-safe state machine that drives FS0B on detected faults, with infinite auto-retry deep fail-safe mode and configurable over/under-voltage detection delays (OV_DGLT/UV_DGLT = 25 µs/25 µs for VCOREMON).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ASIL Level | ASIL B compliant per ISO 26262; qualified to AEC-Q100 Grade 1 |
| Input Voltage Range | 60 V DC max; supports 12 V and 24 V automotive battery systems with reverse-battery protection diodes on VSUP1/VSUP2 |
| VPRE Controller | Synchronous buck controller with external MOSFETs; supports up to 10 A peak current, configurable switching frequency |
| BUCK1 Output | 1.1 V ±1.5 % at 4.5 A peak; dedicated MCU core supply with SVS capability and soft-start slope of 7.81 mV/µs |
| BUCK3 Output | 2.3 V ±1.5 % at 4.5 A peak; assigned to power sequencing slot 0; TSD response: shutdown + DFS |
| LDO1 / LDO2 | 1.8 V / 3.3 V outputs, each rated 400 mA DC; used for MCU I/O and ADC supply with independent voltage supervision |
| Fail-Safe Output | FS0B active-low open-drain output; asserts on monitored fault (e.g., VCOREMON UV/ OV, TSD, watchdog timeout) |
| Interface | 32-bit SPI or I²C (address 0x20); includes CRC for command integrity; supports configuration and real-time monitoring |
Pinout & Package
MC33FS8415G0KS 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 | Circuit Role | Design Meaning |
|---|---|---|
| 1 WAKE2 | Wake-up input 2 | Analog/digital input for system wake-up; requires external series resistor if used globally |
| 3 BUCK3_INQ | Buck3 quiet input | Low-noise input for BUCK3 to reduce EMI coupling into sensitive analog rails |
| 7 BUCK3_SW | Buck3 switching node | Connects to external inductor; high dv/dt node requiring careful PCB layout and snubber design |
| 14 FS0B | Fail-safe output 0 | Active-low open-drain output; drives external safety relay or MCU reset on fault detection |
| 17 VCOREMON | Core voltage monitor input | Must be connected directly to BUCK1 output; enables precise SVS with 88 % UVTH and 112 % OVTH thresholds |
| 19 RSTB | Reset output | Active-low reset signal for MCU; pulled up to VDDIO; monitors external reset assertion and internal faults |
| 20 FIN | Freq sync input | Accepts external clock (e.g., from master FS85) to synchronize SMPS switching and reduce beat frequencies |
| 24 FOUT | Freq sync output | Provides synchronized clock to slave PMICs; enables coherent multi-device EMC optimization |
| 37 BUCK1_SW | Buck1 switching node | Primary high-current switching node for MCU core rail; connects to 1 µH inductor and low-ESR output capacitor |
| 48 PRE_FB | VPRE feedback input | Monitors VPRE output voltage and provides negative current sense for external MOSFET protection |
| 54 LDO2 | LDO2 output | 3.3 V regulated output for MCU I/O banks; 400 mA capable with thermal shutdown and UV/OV supervision |
| 55 LDO1 | LDO1 output | 1.8 V regulated output for ADC reference or auxiliary logic; independently supervised and sequenced |
| 57 EP | Exposed thermal pad | Electrically tied to GNDFS/GND; mandatory solder connection for thermal dissipation and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| OTP-programmable power sequencing | Enables precise start/stop timing across BUCK1, BUCK3, LDO1, and LDO2 - critical for radar SoC boot reliability |
| Fail-safe state machine with FS0B | Hardware-enforced fault response: asserts FS0B within microseconds on VCOREMON UV/OV, TSD, or watchdog timeout |
| Dual-supervision LDOs | LDO1 (1.8 V) and LDO2 (3.3 V) each feature independent over/under-voltage monitoring and thermal shutdown |
| EMC-optimized SMPS control | Includes FIN/FOUT synchronization, spread spectrum, and slew-rate control - reduces peak radiated emissions by >10 dBµV/m |
| Configurable watchdog | Simple watchdog with programmable timeout; complements MCU-level monitoring for layered safety compliance |
| Multi-input voltage monitoring | Four analog inputs (VMON1–VMON4) support flexible external rail supervision beyond internal regulators |
Applications
| Radar Module Power Supply | ADAS Domain Controller Auxiliary Rail |
|---|---|
Use Scenario: Powers NXP S32R294 radar processor and TEF810x RF transceiver in 12 V/24 V automotive radar systems. IC Role / Device Role / Timing Role: Primary SBC providing core (BUCK1), I/O (LDO2), ADC (LDO1), and RF bias (BOOST) rails with synchronized startup and fail-safe assertion. Use Value: Enables ASIL B-compliant radar operation with deterministic power sequencing, fault containment via FS0B, and <5 µs UV detection on VCOREMON. | Use Scenario: Supplies auxiliary voltage rails for sensor fusion processors and CAN transceivers in centralized ADAS domain controllers. IC Role / Device Role / Timing Role: Secondary power manager delivering isolated, supervised LDO outputs and synchronized BUCK3 for peripheral interfaces. Use Value: Reduces BOM count by consolidating three LDOs and one BUCK into single IC while maintaining independent supervision and sequencing control. |
| Vision System Camera Power | Infotainment Head Unit Core Supply |
Use Scenario: Delivers clean, low-noise power to image signal processors (ISPs) and MIPI PHYs in mono/stereo camera modules. IC Role / Device Role / Timing Role: Low-EMI power source using BUCK3_INQ quiet input and spread-spectrum modulation to minimize noise coupling into analog video paths. Use Value: Achieves <10 µV RMS output ripple on LDO1/LDO2, meeting ISP analog supply noise requirements without additional filtering. | Use Scenario: Provides core voltage (BUCK1), I/O voltage (LDO2), and audio codec supply (LDO1) in infotainment head units with display and voice processing. IC Role / Device Role / Timing Role: Centralized power hub supporting dynamic voltage scaling (DVS) and coordinated shutdown during sleep modes. Use Value: Enables <10 µA quiescent current in OFF mode while retaining wake-up capability on WAKE1/WAKE2 - extending battery runtime in parked state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive SBC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33FS8410G0KS | Lacks FCCU (functional safety monitoring unit); no VMON3/VMON4; BUCK2 disabled; only 2 voltage monitoring inputs | Targeted for simpler vision or gateway applications without multi-IC error monitoring or extended supervision | Select when ASIL B compliance is required but full FCCU and quad VMON supervision are unnecessary |
| MC33FS8510A0KS | ASIL D certified; adds FCCU with dual-channel MCU error monitoring (FCCU1/FCCU2); includes ERRMON input; higher diagnostic coverage | Required for ASIL D domain controllers or safety-critical radar fusion units where challenger watchdog and ABIST are mandated | Select when functional safety requirements exceed ASIL B, especially for systems requiring ISO 26262 Part 6 tool qualification evidence |
Compared with MC33FS8410G0KS, MC33FS8415G0KS adds FCCU and two extra VMON inputs for enhanced diagnostics, while MC33FS8510A0KS upgrades to ASIL D with dual-FCCU monitoring and ABIST - making it suitable for higher-integrity domain controllers where fault injection testing and diagnostic coverage metrics are critical.
Availability
MC33FS8415G0KS is available at Aetrix Electronics and suitable for radar modules, ADAS domain controllers, and infotainment head units requiring stable component supply, long-term automotive qualification, and ASIL B safety compliance.
Supply support for MC33FS8415G0KS 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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The FS84 family - including MC33FS8415G0KS - was designed specifically for ASIL B automotive power management in radar, vision, and infotainment systems, emphasizing fail-safe behavior, EMC robustness, and OTP-configurable sequencing.
FAQ
What safety standard does MC33FS8415G0KS comply with?
MC33FS8415G0KS complies with ISO 26262 up to ASIL B and is qualified per AEC-Q100 Grade 1. It includes hardware-based safety mechanisms such as VCOREMON, VDDIOMON, four VMON inputs, fail-safe output (FS0B), and a simple watchdog - all verified under NXP's ASIL B development process (Rev. 12.0, May 2026).
Does MC33FS8415G0KS support multi-phase operation?
No, MC33FS8415G0KS does not support multi-phase operation. While BUCK1 and BUCK2 can operate in multiphase mode in other variants (e.g., FS8420), the FS8415 configuration disables BUCK2 entirely - confirmed in Table 1 of the datasheet. Only BUCK1, BUCK3, BOOST, LDO1, and LDO2 are enabled in this variant.
What is the function of the BUCK3_INQ pin on MC33FS8415G0KS?
The BUCK3_INQ (Pin 3) on MC33FS8415G0KS is a dedicated quiet input for the BUCK3 regulator, electrically isolated from noisy power domains. It enables low-EMI operation by routing a filtered version of the input voltage to BUCK3's control loop - reducing noise coupling into sensitive analog subsystems like radar receivers or camera ISPs.
Can MC33FS8415G0KS be configured for different power-up sequences?
Yes, MC33FS8415G0KS supports OTP-programmable power sequencing: BUCK1 starts/stops in slot 0, BUCK3 in slot 0, LDO1 in slot 2, and LDO2 in slot 1. This allows deterministic, application-specific startup order - essential for radar SoCs requiring core voltage stabilization before I/O or ADC enablement.
What is the maximum output current capability of the BOOST converter in MC33FS8415G0KS?
The BOOST converter in MC33FS8415G0KS supports a maximum input current of 1.5 A peak, delivering a configurable output voltage (5.0 V in this OTP variant). It features integrated low-side switching, slope compensation (125 mV/µs), and 500 V/µs slew rate control - optimized for powering RF front-ends like TEF810x in radar applications.
MC33FS8415G0KS 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)
MC33FS8415G0KS FAQ
1.How can I place an order for MC33FS8415G0KS through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33FS8415G0KS 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 MC33FS8415G0KS reliable?
The price and inventory of MC33FS8415G0KS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33FS8415G0KS is usually 5 days.
3.What payment methods are accepted for MC33FS8415G0KS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33FS8415G0KS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33FS8415G0KS?
MC33FS8415G0KS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33FS8415G0KS 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 MC33FS8415G0KS?
For technical support, including MC33FS8415G0KS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33FS8415G0KS requirements.
6.How does Aetrix verify that MC33FS8415G0KS is sourced from the original manufacturer or authorized distributors?
All MC33FS8415G0KS 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 MC33FS8415G0KS meets industry standards.
7.What is the process for return or replacement of MC33FS8415G0KS?
All MC33FS8415G0KS units undergo pre-shipment inspection (PSI). If there is an issue with MC33FS8415G0KS, 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 MC33FS8415G0KS part is unused and in its original packaging.
Return procedure for MC33FS8415G0KS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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