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Infineon Technologies S6BP401AW0SN1B000
- Part No.:
- S6BP401AW0SN1B000
- Manufacturer:
- Infineon Technologies
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
S6BP401AW0SN1B000.pdf
- Description:
- IC REG 6OUT BUCK/LNR SYNC 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,964
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Product details
Overview
S6BP401AW0SN1B000 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, with preset output voltages including 1.20–1.575 V / 2 A (DD1), 1.00–1.275 V / 3 A (DD2), 1.20–2.575 V / 2 A (DD3), and 3.3–3.4 V / 1 A (DD4), enabling multi-rail power sequencing in camera ECU and radar sensor modules.
For engineers reviewing the S6BP401AW0SN1B000 datasheet, S6BP401AW0SN1B000 pinout, S6BP401AW0SN1B000 application, or S6BP401AW0SN1B000 equivalent, key selection criteria include its integrated current-mode buck architecture, independent enable/control per rail, built-in PG monitors for all six outputs, thermal shutdown, and AEC-Q100 qualification for under-hood automotive environments.
Technical Context
The S6BP401AW0SN1B000 employs a current-mode control architecture across all four buck regulators, delivering fast load transient response and stable operation up to 2.4 MHz switching frequency. Each buck includes internal high-side and low-side MOSFETs rated for 3 A continuous output, with soft-start time fixed at 200 ms (at 2.1 MHz) and programmable UVLO/OVP thresholds (e.g., DD1: 94% UV, 106% OV).
Its dual LDOs (LD1/LD2) feature internal voltage-setting resistors and operate from 2.97–5.5 V input, delivering up to 0.5 A (LD1) and 0.2 A (LD2) with dedicated power-good outputs (PGL2). The integrated windowed watchdog timer accepts WDI pulses and asserts RST on timeout or out-of-window triggering, supporting fail-safe system reset in safety-critical ADAS domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range (Buck) | 4.5 V to 5.5 V - Supports direct connection to automotive 5 V supply rails without pre-regulation. |
| Switching Frequency | 2.1 MHz nominal (internal clock); 1.8–2.4 MHz (external sync) - Enables compact external inductor/capacitor sizing for space-constrained ADAS modules. |
| Max Output Current (DD2) | 3 A - Powers high-current image signal processors (ISPs) or SoCs in front-facing camera systems. |
| Output Voltage Accuracy | ±1.5% over temp and line - Ensures stable core voltage for automotive-grade vision processors meeting ISO 26262 ASIL-B timing margins. |
| Watchdog Window | Digital windowed type with configurable timeout - Detects both early and late WDI pulses, preventing false resets during processor boot or low-power states. |
| AEC-Q100 Grade | Grade-1 (−40 °C to +125 °C ambient) - Qualified for engine bay–adjacent placement in surround-view or driver-monitoring ECUs. |
| Package | 6 mm × 6 mm QFN-40 with exposed pad - Provides low thermal resistance (θJA = 32 °C/W typical) for passive heatsinking in sealed enclosures. |
Pinout & Package
The S6BP401AW0SN1B000 is housed in a thermally enhanced 6 mm × 6 mm QFN-40 package with exposed thermal pad (EP), requiring solder connection to PCB ground plane for optimal thermal performance and EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1–EN4 | Enable inputs for buck channels DD1–DD4 | Active-high logic enables independent power rail sequencing; pulled low by default for safe power-up. |
| FB1–FB4 | Voltage feedback inputs for bucks | Connect to resistor dividers for adjustable output; internally tied to precision reference for preset configurations. |
| PG1–PG4, PGL2 | Power-good status outputs | Open-drain signals indicate valid regulation (±5% window); used for upstream reset coordination in multi-IC systems. |
| LX1–LX4 | Switch-node outputs | Drive external inductors; require low-ESR ceramic capacitors and careful layout to minimize ringing and EMI. |
| WDI / RST | Watchdog trigger and reset outputs | WDI accepts 1–10 Hz pulse train; RST asserts active-low reset to MCU upon timeout or window violation. |
| VCC / GND / EP | Main analog supply, ground, thermal pad | VCC powers internal controller; EP must be solidly connected to internal ground plane for thermal and noise integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side/low-side FETs | Eliminates need for 8 external MOSFETs and gate drivers, reducing BOM count and PCB area by >35% vs discrete solutions. |
| Built-in compensation circuits | Enables stable loop response with standard output capacitor types (e.g., 22 µF X5R), removing need for external compensation networks. |
| Independent soft-start per buck | Fixed 200 ms ramp (at 2.1 MHz) prevents inrush current overload during cold crank or battery recovery events. |
| Dual LDOs with PG outputs | Provides clean, low-noise auxiliary rails (e.g., for SerDes PHYs or sensors) with independent monitoring for fault isolation. |
| Windowed watchdog timer | Rejects spurious resets caused by MCU glitches while ensuring timely recovery from lockup-critical for ASIL-B compliance. |
Applications
| Front-Facing Camera ECU | Radar Sensor Module |
|---|---|
Use Scenario: Powering 5 MP image sensor, ISP, and MIPI interface in automotive forward collision warning system. IC Role / Device Role / Timing Role: Primary PMIC delivering sequenced 1.1 V (ISP core), 1.8 V (memory I/O), 3.3 V (interface), and 1.2 V (sensor analog) rails with synchronized PG signaling. Use Value: Eliminates need for external sequencing IC and reduces total solution size by 40% versus discrete DC/DC + LDO + supervisor design. | Use Scenario: Supplying 77 GHz radar transceiver SoC and RF front-end in blind-spot detection module. IC Role / Device Role / Timing Role: Generates ultra-low-noise 1.0 V (RF PLL), 1.2 V (digital core), 1.8 V (ADC/DAC), and 3.3 V (GPIO) with independent enable control for sleep/wake transitions. Use Value: Meets stringent <10 µVpp ripple requirement on RF rails via optimized internal FET timing and integrated LDO post-regulation. |
| Driver Monitoring System | Surround-View Processing Unit |
Use Scenario: Powering infrared illumination driver, eye-tracking sensor, and AI inference accelerator in cabin DMS. IC Role / Device Role / Timing Role: Delivers 1.2 V (NPU), 1.8 V (camera interface), 3.3 V (illumination control), and 1.2 V (sensor bias) with watchdog supervision of NPU firmware execution. Use Value: Windowed WDT ensures deterministic reset within 200 ms of software hang-validated for ASIL-B functional safety goals. | Use Scenario: Supporting quad-camera stitching SoC with real-time video processing and display output in 360° parking assist. IC Role / Device Role / Timing Role: Supplies 1.0 V (GPU), 1.2 V (CPU), 1.8 V (DDR I/O), and 3.3 V (LVDS transmitter) with independent soft-start to prevent bus contention during boot. Use Value: Built-in discharge resistors ensure rapid rail collapse (<10 ms) between camera frames, enabling precise exposure control. |
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 (Monolithic Power) | Quad buck only (no integrated LDOs or watchdog); requires external supervisor IC for safety monitoring. | Lacks native windowed WDT and dual LDOs-requires additional components to match S6BP401A's functional safety and rail count capability. | Select when cost sensitivity outweighs integration needs and external safety ICs are already in BOM. |
| TPS659413 (Texas Instruments) | Includes 4 buck + 3 LDO + watchdog, but uses external FETs for bucks and larger 7×7 mm QFN-48 package. | Higher board area and thermal footprint; external FETs increase layout complexity and reduce efficiency at 3 A loads. | Prefer when higher LDO count (3 vs 2) is required and board space allows larger footprint. |
Compared with MPQ4436-AEC1 and TPS659413, the S6BP401AW0SN1B000 uniquely integrates current-mode bucks with internal FETs, dual LDOs, and a windowed watchdog in a compact 6×6 mm QFN-40, delivering best-in-class integration density and ASIL-B-ready supervision for ADAS camera and radar ECUs.
Availability
S6BP401AW0SN1B000 is available at Aetrix Electronics and suitable for front-facing camera ECUs, radar sensor modules, driver monitoring systems, and surround-view processing units requiring stable component supply and AEC-Q100-compliant power delivery.
Supply support for S6BP401AW0SN1B000 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 management, automotive, and industrial control solutions with deep expertise in AEC-Q100-qualified IC design.
The S6BP401AW0SN1B000 belongs to Infineon's automotive PMIC portfolio, engineered specifically for advanced driver assistance systems requiring high integration, functional safety features, and robust operation across extended temperature ranges.
FAQ
What is the maximum allowable input voltage for the S6BP401AW0SN1B000 buck converters?
The absolute maximum input voltage for all four buck converters (DD1–DD4) is 6.0 V, but the recommended operating range is strictly 4.5 V to 5.5 V. Exceeding 5.5 V may trigger overvoltage protection (OVP) and cause automatic shutdown; sustained operation above 6.0 V risks permanent damage to internal FETs and control circuitry.
Can the S6BP401AW0SN1B000's watchdog timer be disabled?
No-the windowed watchdog timer is always active and cannot be disabled via hardware or register setting. Its operation is hardwired: if WDI pulses stop or fall outside the configured window, RST asserts within 200 ms. This design enforces fail-safe behavior required for ASIL-B compliance in automotive ADAS applications.
How does the S6BP401AW0SN1B000 handle thermal overload?
Upon die temperature exceeding 150 °C, the device initiates thermal shutdown (TSD): all buck and LDO outputs disable, PG signals deassert, and internal regulators power down. Recovery occurs automatically only after die temperature falls below 135 °C hysteresis, preventing repeated cycling during sustained overheating conditions.
Are the preset output voltages factory-programmed or resistor-configurable?
The S6BP401AW0SN1B000 supports both modes: it ships with factory-preset output voltages (e.g., 1.20 V for DD1) using internal resistor dividers, but FB pins remain accessible for external resistor programming to any value within the specified range (e.g., 1.20–1.575 V for DD1), with full electrical validation provided in the datasheet.
S6BP401AW0SN1B000 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:
- 1.5V, 2A
- Voltage/Current - Output 2:
- 1.1V, 3A
- Voltage/Current - Output 3:
- 1.8V, 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)
S6BP401AW0SN1B000 FAQ
1.How can I place an order for S6BP401AW0SN1B000 through Aetrix?
Please submit a Request for Quotation (RFQ) for S6BP401AW0SN1B000 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 S6BP401AW0SN1B000 reliable?
The price and inventory of S6BP401AW0SN1B000 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S6BP401AW0SN1B000 is usually 5 days.
3.What payment methods are accepted for S6BP401AW0SN1B000?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S6BP401AW0SN1B000 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S6BP401AW0SN1B000?
S6BP401AW0SN1B000 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S6BP401AW0SN1B000 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 S6BP401AW0SN1B000?
For technical support, including S6BP401AW0SN1B000 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S6BP401AW0SN1B000 requirements.
6.How does Aetrix verify that S6BP401AW0SN1B000 is sourced from the original manufacturer or authorized distributors?
All S6BP401AW0SN1B000 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 S6BP401AW0SN1B000 meets industry standards.
7.What is the process for return or replacement of S6BP401AW0SN1B000?
All S6BP401AW0SN1B000 units undergo pre-shipment inspection (PSI). If there is an issue with S6BP401AW0SN1B000, 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 S6BP401AW0SN1B000 part is unused and in its original packaging.
Return procedure for S6BP401AW0SN1B000:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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