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Infineon Technologies S6BP401AM2SN1B000
- Part No.:
- S6BP401AM2SN1B000
- Manufacturer:
- Infineon Technologies
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
S6BP401AM2SN1B000.pdf
- Description:
- IC REG 6OUT BUCK/LNR SYNC 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,515
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Product details
Overview
S6BP401AM2SN1B000 from Infineon Technologies (formerly Cypress) is an automotive-grade power management IC for ADAS platforms, integrating a quad buck DC/DC converter (2.1 MHz nominal switching frequency, 3 A per channel), dual LDOs, and a digital windowed watchdog timer. It supports preset output voltages from 1.00 V to 3.40 V across six regulated rails and meets AEC-Q100 Grade-1 requirements for under-hood operation.
For engineers reviewing the S6BP401AM2SN1B000 datasheet, S6BP401AM2SN1B000 pinout, S6BP401AM2SN1B000 application, or S6BP401AM2SN1B000 equivalent, key selection criteria include multi-rail sequencing control, integrated FETs enabling compact 6 mm × 6 mm QFN-40 layout, watchdog timeout windowing, and power-good monitoring per rail in safety-critical camera and radar subsystems.
Technical Context
The S6BP401AM2SN1B000 employs current-mode control architecture across all four buck converters, delivering fast load transient response with built-in compensation and preset voltage dividers. Each buck channel operates from 4.5 V–5.5 V input and delivers up to 3 A (DD2) or 2 A (DD1/DD3) with independent enable, soft-start, and discharge control.
The dual LDOs accept 2.97 V–5.5 V input and provide fixed or resistor-programmable outputs; the integrated windowed watchdog accepts external trigger pulses and asserts reset if timing falls outside configurable upper/lower bounds - critical for ISO 26262-compliant system supervision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V–5.5 V for buck converters; 2.97 V–5.5 V for LDOs - enables direct connection to automotive 5 V rail with margin for transients. |
| Switching Frequency | 2.1 MHz nominal (1.8–2.4 MHz externally adjustable) - allows use of small, low-profile inductors & reduces EMI fundamental below AM band. |
| Max Output Current | 3 A (DD2), 2 A (DD1/DD3), 1 A (DD4), 0.5 A (LD1/LD2) - supports high-current image sensor cores and low-noise analog front-ends. |
| Output Voltage Accuracy | ±1.5% over temp & line - ensures stable core logic supply under thermal stress in ADAS ECUs. |
| Watchdog Window | Digital windowed timeout (configurable upper/lower bounds) - prevents false resets during valid software delays while detecting lockup. |
| Power Good Threshold | 94.0–95.5% UVLO, 106.0% OVP per rail - provides precise rail validation before system boot or state transition. |
| Package | 6 mm × 6 mm QFN-40 with exposed thermal pad - enables efficient heat dissipation in sealed ADAS camera housings. |
Pinout & Package
Package: 6 mm × 6 mm QFN-40 with exposed thermal pad (EP), designed for automotive PCB thermal management and mechanical robustness.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1–EN4, ENL1–ENL2 | Independent enable inputs | Allow sequenced power-up/down of each rail without external logic or MCU intervention. |
| FB1–FB4 | Voltage feedback nodes | Connect to internal resistive dividers; external resistor adjustment enables fine-tuning of output setpoints. |
| PG1–PG4, PGL2 | Power-good open-drain outputs | Assert low when respective rail is within ±6% tolerance - used for inter-rail dependency signaling or MCU reset coordination. |
| LX1–LX4 | Switch-node outputs | Drive external inductors; require low-ESR ceramic capacitors and careful layout to minimize EMI and ringing. |
| WDI, RST | Watchdog interface | WDI accepts periodic pulses; RST asserts active-low reset if pulse interval violates window - no external timer needed. |
| VCC, GND, EP | Main power & ground | VCC powers analog controller; EP must be soldered to solid ground plane for thermal conduction and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side/low-side FETs | Eliminates need for 8 external MOSFETs and associated gate drivers, reducing BOM count and board area by >30% vs discrete solutions. |
| Load-independent soft-start | Ensures consistent ramp time regardless of output capacitance or load, preventing inrush current spikes during cold start. |
| Built-in discharge resistors | Actively pull down outputs after disable, avoiding floating states that could cause downstream latch-up or leakage paths. |
| AEC-Q100 Grade-1 qualification | Rated for −40 °C to +125 °C ambient operation - validated for placement near radar modules or camera lenses in engine bay proximity. |
Applications
| Radar Sensor Power Subsystem | ADAS Camera Module |
|---|---|
Use Scenario: Powering 77 GHz radar SoC with multiple core, I/O, and RF supply rails under vehicle vibration and thermal cycling. IC Role / Device Role / Timing Role: Primary PMIC managing rail sequencing, voltage regulation, and watchdog supervision for ASIL-B functional safety compliance. Use Value: Integrated PG signals and independent enables allow deterministic boot order; windowed WDT detects firmware hangs without adding external components. | Use Scenario: Supplying image sensor, ISP, and MIPI interface in compact rear-view or surround-view camera housing. IC Role / Device Role / Timing Role: Single-chip power solution delivering 1.2 V (sensor core), 1.8 V (ISP), 3.3 V (I/O), and 1.2 V LDO (analog bias) with tight regulation. Use Value: 2.1 MHz switching enables <1.0 mm height inductors; QFN-40 footprint fits constrained PCB space behind lens assembly. |
| Automotive Display Cluster | Driver Monitoring System (DMS) |
Use Scenario: Powering TFT-LCD controller, GPU, and touch controller in instrument cluster with EMC-sensitive display timing. IC Role / Device Role / Timing Role: Multi-rail regulator with low-noise LDOs for display analog circuitry and synchronized buck outputs for digital logic. Use Value: Independent soft-start and PG monitoring prevent display artifacts during ignition cycle; VREG output powers internal analog blocks cleanly. | Use Scenario: Supporting near-infrared illumination, IR sensor, and AI inference processor in cabin-facing DMS module. IC Role / Device Role / Timing Role: Safety-aware PMIC providing fault reporting (OCP/OVP/TSD) and watchdog-triggered reset to meet ASIL-A requirements. Use Value: Thermal shutdown and overcurrent protection protect against LED driver faults; windowed WDT validates real-time eye-tracking algorithm execution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4436-AEC1 | Quad buck only (no integrated LDOs or watchdog); requires external LDOs and separate WDT IC. | Lacks integrated safety features; suitable for non-safety-critical infotainment but not ASIL-B systems. | Select when cost sensitivity outweighs integration needs and safety certification is not required. |
| TPS65381A-Q1 | Triple buck + dual LDO + watchdog, but max 2.5 A per buck and no external clock sync capability. | Lower current capacity limits use with high-performance radar SoCs; lacks SYNC pin for EMI spread-spectrum control. | Prefer for lower-power ADAS domains where 2.5 A rails suffice and EMI tuning is secondary. |
Compared with MPQ4436-AEC1 and TPS65381A-Q1, the S6BP401AM2SN1B000 uniquely combines 3 A buck capability, dual LDOs, windowed watchdog, and external clock synchronization in a single AEC-Q100 Grade-1 package - enabling full ADAS subsystem power management without supplemental ICs.
Availability
S6BP401AM2SN1B000 is available at Aetrix Electronics and suitable for automotive radar sensor subsystems, ADAS camera modules, instrument clusters, and driver monitoring systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for S6BP401AM2SN1B000 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 Germany, specializing in power management, automotive microcontrollers, and sensor solutions for electrification and automation.
The S6BP401AM2SN1B000 belongs to Infineon's automotive PMIC portfolio, engineered specifically to consolidate power delivery, sequencing, and functional safety supervision for next-generation ADAS platforms operating under ASIL-B constraints.
FAQ
What is the maximum junction temperature rating for S6BP401AM2SN1B000?
The device is rated for operation up to +150 °C junction temperature and qualified per AEC-Q100 Grade-1 (−40 °C to +125 °C ambient). Thermal shutdown activates at approximately +165 °C to protect internal FETs and control circuitry during sustained overload or poor heatsinking conditions.
Can the watchdog timer be disabled or bypassed?
No - the windowed watchdog timer is always active once the device is powered and cannot be disabled via pin or register. The WDI input must receive valid pulses within the configured window; absence triggers RST assertion. This design enforces mandatory supervision for functional safety compliance.
How are output voltages selected without external resistors?
Each buck and LDO channel uses factory-laser-trimmed internal resistor dividers to set nominal output voltages (e.g., 1.200 V, 3.300 V). External resistors may be added to FB pins to adjust beyond factory presets, but default operation requires no external components for standard configurations.
Is the S6BP401AM2SN1B000 pin-compatible with earlier S6BP401A variants?
Yes - the S6BP401AM2SN1B000 shares identical pinout, package dimensions, and electrical behavior with the base S6BP401A. The "M2SN1B000" suffix denotes a specific tape-and-reel packaging configuration and automotive qualification grade, not a functional revision.
S6BP401AM2SN1B000 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Topology:
- Step-Down (Buck) Synchronous (4), Linear (LDO) (2)
- Number of Outputs:
- 6
- Frequency - Switching:
- 2.1MHz
- Voltage/Current - Output 1:
- 1.25V, 2A
- Voltage/Current - Output 2:
- 1.125V, 3A
- Voltage/Current - Output 3:
- 2.55V, 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)
S6BP401AM2SN1B000 FAQ
1.How can I place an order for S6BP401AM2SN1B000 through Aetrix?
Please submit a Request for Quotation (RFQ) for S6BP401AM2SN1B000 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 S6BP401AM2SN1B000 reliable?
The price and inventory of S6BP401AM2SN1B000 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S6BP401AM2SN1B000 is usually 5 days.
3.What payment methods are accepted for S6BP401AM2SN1B000?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S6BP401AM2SN1B000 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S6BP401AM2SN1B000?
S6BP401AM2SN1B000 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S6BP401AM2SN1B000 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 S6BP401AM2SN1B000?
For technical support, including S6BP401AM2SN1B000 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S6BP401AM2SN1B000 requirements.
6.How does Aetrix verify that S6BP401AM2SN1B000 is sourced from the original manufacturer or authorized distributors?
All S6BP401AM2SN1B000 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 S6BP401AM2SN1B000 meets industry standards.
7.What is the process for return or replacement of S6BP401AM2SN1B000?
All S6BP401AM2SN1B000 units undergo pre-shipment inspection (PSI). If there is an issue with S6BP401AM2SN1B000, 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 S6BP401AM2SN1B000 part is unused and in its original packaging.
Return procedure for S6BP401AM2SN1B000:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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