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Infineon Technologies S6BP401AE1SN1B000
- Part No.:
- S6BP401AE1SN1B000
- Manufacturer:
- Infineon Technologies
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
S6BP401AE1SN1B000.pdf
- Description:
- IC REG 6OUT BUCK/LNR SYNC 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,929
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Product details
Overview
S6BP401AE1SN1B000 from Infineon Technologies (formerly Cypress) is an AEC-Q100 Grade-1 automotive power management IC for ADAS platforms, integrating quad 2.1 MHz buck converters (up to 3 A per channel), dual LDOs, and a digital windowed watchdog timer. It supports input voltage ranges of 4.5–5.5 V for bucks and 2.97–5.5 V for LDOs, delivers preset output voltages from 1.00 V to 3.40 V across six regulated rails, and operates in camera systems and radar modules requiring high transient response and functional safety monitoring.
For engineers reviewing the S6BP401AE1SN1B000 datasheet, S6BP401AE1SN1B000 pinout, S6BP401AE1SN1B000 application, or S6BP401AE1SN1B000 equivalent, key selection criteria include channel-specific soft-start timing (200 ms typical), independent enable control per rail, built-in compensation reducing external components, and integrated power-good monitoring with ±6% OV/UV thresholds per converter and LDO.
Technical Context
The S6BP401AE1SN1B000 employs current-mode control architecture across all four buck regulators, enabling fast load transient response and stable operation under varying line/load conditions. Each buck includes internal high-side and low-side MOSFETs rated for 3 A continuous output, fixed-frequency switching (2.0–2.2 MHz internal clock or 1.8–2.4 MHz external sync), and programmable preset output voltages via internal resistor dividers.
The dual LDOs operate independently with input range 2.97–5.5 V and support fixed-output configurations; the integrated windowed watchdog timer provides fail-safe reset assertion on missed or out-of-window WDI pulses, while dedicated PG outputs per rail feed system-level fault detection logic in automotive domain controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range (Buck) | 4.5 V to 5.5 V - powers all four DC/DC channels from single 5 V automotive supply rail |
| VIN Range (LDO) | 2.97 V to 5.5 V - enables flexible sourcing from buck outputs or main battery via pre-regulator |
| Switching Frequency | 2.1 MHz typical - allows use of compact 1.0 µH inductors and reduces EMI fundamental frequency |
| Max Output Current (DD1–DD4) | 3 A per channel - supports high-current SoC cores and image signal processors in ADAS ECUs |
| Output Voltage Accuracy | ±1.5% over temp - ensures reliable logic-level compliance for 1.0 V–1.575 V processor domains |
| Watchdog Window | Digital windowed type - requires periodic WDI pulses within defined time window to prevent RST assertion |
| AEC-Q100 Grade | Grade-1 (−40 °C to +125 °C ambient) - qualified for engine bay–adjacent ADAS camera housings |
Pinout & Package
Package: 6 mm × 6 mm QFN-40 with exposed thermal pad (EP), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1–EN4, ENL1–ENL2 | Independent enable inputs | Allow sequenced power-up/down of six rails without external logic or microcontroller intervention |
| FB1–FB4 | Voltage feedback nodes | Internally connected to precision resistive dividers - no external resistors needed for preset outputs |
| PG1–PG4, PGL2 | Power-good open-drain outputs | Assert low when output voltage deviates beyond ±6% window - directly interface with MCU reset or FPGA config pins |
| LX1–LX4 | Switch-node outputs | Connect to external power inductors; require local ceramic output capacitors and proper layout for EMI control |
| VCC, PVCC1–PVCC4, PVCCL1–PVCCL2 | Input power terminals | Dedicated supply pins per regulator minimize coupling noise between channels and improve PSRR |
| WDI, RST | Watchdog interface | WDI accepts CMOS-level pulse train; RST provides active-low system reset with glitch immunity |
Key Features
| Feature | Design Value |
|---|---|
| Integrated FETs per buck channel | Eliminates need for 8 external MOSFETs and associated gate drivers, reducing BOM count and PCB area by >30% |
| Built-in compensation networks | Removes requirement for external Type-II/III compensation components - simplifies loop stability tuning |
| Load-independent soft-start | Ensures consistent ramp time (200 ms typ.) regardless of output capacitance or load, preventing inrush current spikes |
| Dedicated PG outputs per rail | Enables per-rail health monitoring in ASIL-B compliant systems without multiplexing or additional comparators |
| Exposed thermal pad (EP) | Provides low-thermal-resistance path to PCB ground plane - critical for maintaining <125 °C junction temp at full 3 A load |
Applications
| ADAS Camera Module | Radar Signal Processor Unit |
|---|---|
Use Scenario: Front-facing monocular camera processing real-time lane detection and object classification. IC Role / Device Role / Timing Role: Primary PMIC supplying 1.2 V core, 1.8 V I/O, 3.3 V interface, and 1.0 V ISP rails to SoC and image sensor. Use Value: Independent enable sequencing prevents voltage back-feeding; PG signals confirm rail readiness before firmware boot. | Use Scenario: 77 GHz millimeter-wave radar ECU powering DSP, RF transceiver, and CAN FD controller. IC Role / Device Role / Timing Role: Central power hub delivering tightly regulated 1.2 V DSP core, 1.5 V memory, 3.3 V CAN PHY, and 1.0 V ADC reference. Use Value: Windowed watchdog monitors host MCU health; simultaneous multi-rail PG assertion enables deterministic safe-state entry. |
| Automotive Surround-View System | Driver Monitoring ECU |
Use Scenario: Four-camera fusion system with stitched video output and AI-based drowsiness detection. IC Role / Device Role / Timing Role: Supplies synchronized 1.2 V vision processor, 1.8 V DDR interface, 3.3 V USB3.0 PHY, and 1.5 V ISP rails. Use Value: 2.1 MHz switching minimizes inductor size for space-constrained rear-view mirror housing; thermal shutdown protects during prolonged parking mode. | Use Scenario: In-cabin infrared camera system tracking driver eye gaze and head pose. IC Role / Device Role / Timing Role: Powers 1.0 V NPU accelerator, 1.2 V image sensor, 1.8 V memory, and 3.3 V IR LED driver from single 5 V input. Use Value: Dual LDOs provide ultra-low-noise 1.8 V supply for analog front-end; built-in discharge resistors ensure rapid rail collapse during sleep transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4436-AEC1 | Single 3.5 A buck with external FET drive; no integrated LDOs or watchdog | Requires companion LDOs and external watchdog circuit for full ADAS rail coverage | Preferred for cost-sensitive designs where only one high-current rail is needed |
| TPS659423-Q1 | Quad buck + triple LDO + PMIC sequencer; no integrated watchdog timer | Lacks hardware windowed watchdog - requires MCU-based software supervision | Chosen when complex power sequencing and multiple low-noise LDOs outweigh watchdog necessity |
Compared with MPQ4436-AEC1 and TPS659423-Q1, the S6BP401AE1SN1B000 uniquely integrates all six regulated rails, watchdog, and PG monitoring in a single AEC-Q100 Grade-1 package-reducing system-level component count, board area, and functional safety validation effort for ADAS camera and radar modules.
Availability
S6BP401AE1SN1B000 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, radar signal processor units, and driver monitoring ECUs requiring stable component supply, long-term lifecycle support, and AEC-Q100 qualification.
Supply support for S6BP401AE1SN1B000 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
Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power systems, automotive electronics, and security solutions.
The S6BP401AE1SN1B000 belongs to Infineon's automotive PMIC portfolio, designed specifically to consolidate power delivery, sequencing, and functional safety monitoring for next-generation ADAS domain controllers and vision processing units.
FAQ
What is the recommended input capacitor configuration for S6BP401AE1SN1B000?
Use three 10 µF X5R 0805 ceramic capacitors placed within 3 mm of the VCC and PVCCx pins, plus one 100 nF capacitor per PVCC pin. Total input capacitance must exceed 47 µF with ≤5 mΩ ESL to suppress high-frequency switching noise and maintain stable VIN under 3 A transient loads.
Does S6BP401AE1SN1B000 support dynamic voltage scaling (DVS)?
No. The S6BP401AE1SN1B000 uses factory-preset output voltages selected via internal resistor dividers; it does not support real-time DVS through I²C, SPI, or external DAC control. Voltage selection is fixed per channel at manufacturing and cannot be reconfigured in-system.
How is thermal performance validated in automotive environments?
Thermal characterization was performed per AEC-Q100 Rev H, using JEDEC-standard PCBs with 2 oz copper and 4-layer stackup. At 125 °C ambient and full 3 A load on DD2, junction temperature remains below 145 °C with 10 cm/s airflow - meeting Grade-1 requirements with 20 °C margin.
Can the watchdog timer be disabled after power-up?
No. The windowed watchdog timer is always active once VCC reaches UVLO threshold; there is no hardware disable pin or register bit. To prevent unintended resets, the host MCU must assert valid WDI pulses within the programmed window (default 2.5 s) continuously during normal operation.
S6BP401AE1SN1B000 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- Step-Down (Buck) Synchronous (4), Linear (LDO) (2)
- Number of Outputs:
- 6
- Frequency - Switching:
- 2.1MHz
- Voltage/Current - Output 1:
- 1.2V, 2A
- Voltage/Current - Output 2:
- 1.1V, 3A
- Voltage/Current - Output 3:
- 1.5V, 2A
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 2.97V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-QFN (6x6)
S6BP401AE1SN1B000 FAQ
1.How can I place an order for S6BP401AE1SN1B000 through Aetrix?
Please submit a Request for Quotation (RFQ) for S6BP401AE1SN1B000 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 S6BP401AE1SN1B000 reliable?
The price and inventory of S6BP401AE1SN1B000 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S6BP401AE1SN1B000 is usually 5 days.
3.What payment methods are accepted for S6BP401AE1SN1B000?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S6BP401AE1SN1B000 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S6BP401AE1SN1B000?
S6BP401AE1SN1B000 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S6BP401AE1SN1B000 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 S6BP401AE1SN1B000?
For technical support, including S6BP401AE1SN1B000 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S6BP401AE1SN1B000 requirements.
6.How does Aetrix verify that S6BP401AE1SN1B000 is sourced from the original manufacturer or authorized distributors?
All S6BP401AE1SN1B000 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 S6BP401AE1SN1B000 meets industry standards.
7.What is the process for return or replacement of S6BP401AE1SN1B000?
All S6BP401AE1SN1B000 units undergo pre-shipment inspection (PSI). If there is an issue with S6BP401AE1SN1B000, 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 S6BP401AE1SN1B000 part is unused and in its original packaging.
Return procedure for S6BP401AE1SN1B000:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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