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Infineon Technologies S6BP201A1AST2B20A
- Part No.:
- S6BP201A1AST2B20A
- Manufacturer:
- Infineon Technologies
- Package:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
S6BP201A1AST2B20A.pdf
- Description:
- IC REG BUCK BOOST 5V 1A 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,523
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Product details
Overview
S6BP201A1AST2B20A from Infineon Technologies (formerly Cypress) is a single-channel synchronous buck-boost DC/DC converter IC designed for automotive power rails. It delivers up to 1.0 A output current across a 2.5 V–42 V input range, features factory-preset 5 V output, AEC-Q100 Grade-1 qualification, and integrated four-FET architecture enabling cold-crank and load-dump resilience in body control modules.
For engineers reviewing the S6BP201A1AST2B20A datasheet, S6BP201A1AST2B20A pinout, S6BP201A1AST2B20A application, or S6BP201A1AST2B20A equivalent, key selection criteria include its 200 kHz–2.1 MHz programmable switching frequency, PFM/PWM auto-switching mode, 20 µA quiescent current, SYNC_IN capability for external clock synchronization, and integrated protection suite including OVP/UVP/OCP/TSD/UVLO.
Technical Context
This IC implements a synchronous current-mode buck-boost topology with four internal MOSFETs-two high-side and two low-side-enabling seamless transition between buck and boost modes without external FETs. Its architecture includes an internal 5 V LDO for biasing, a window-comparator-based Power Good (PG) monitor with 14 ms POR timing, and dual ground pins (PGND1/PGND2) for optimized thermal and noise separation.
The MODE pin selects among fixed PWM, automatic PWM/PFM, or forced PFM operation; the RT pin sets internal oscillator frequency via external resistor; and the SYNC pin accepts 200–400 kHz external clocks to synchronize switching, reducing EMI in multi-rail systems. Protection thresholds are tightly specified: VOUT UVP at 95.5%, OVP at 104.5%.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 42 V - supports full automotive battery transients including cold crank (down to 2.5 V) and load dump (up to 42 V) |
| Output Voltage | 5.000 V (factory preset) - eliminates need for external feedback resistors, reducing BOM count and layout area |
| Max Output Current | 1.0 A continuous - sufficient for powering microcontrollers, CAN transceivers, and sensor interfaces in BCMs |
| Quiescent Current | 20 µA - enables ultra-low standby power in always-on automotive domains |
| Switching Frequency | 200 kHz to 2.1 MHz (RT-programmable) - allows optimization of efficiency vs. size for 2.2 µH–10 µH inductors |
| Protection Functions | Input UVLO, output UVP (95.5%), OVP (104.5%), OCP, TSD - ensures robust fault recovery without external circuitry |
| Package | ETSSOP16 (5 mm × 6.4 mm, exposed pad) - thermally enhanced for automotive under-hood environments |
Pinout & Package
Package: ETSSOP16 with exposed thermal pad (5.0 mm × 6.4 mm, 0.65 mm pitch). Exposed pad must be soldered to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PGND1 | Power ground for high-side FET1 and low-side FET1 | Separate ground path minimizes switching noise coupling into control circuitry |
| 2 LX1 | Switch node for first inductor connection | Connects to one end of buck-boost inductor; requires low-inductance layout to reduce EMI |
| 3 PVIN | Power supply for PWM controller and gate drivers | Bypassed internally to VIN; decoupling capacitor required externally on PVIN–PGND1 |
| 4 BST | Bootstrap capacitor connection for high-side FET1 gate drive | Enables 100% duty cycle capability; requires 0.1 µF ceramic capacitor to LX1 |
| 5 VIN | Main input voltage supply (2.5–42 V) | Primary power rail input; connects to battery or main system rail |
| 6 ENA | Enable control input (active-high) | Pull high ≥1.2 V to enable; pull low or leave floating to disable (shutdown current <1 µA) |
| 7 MODE | Operation mode select (PWM/PFM/auto) | Logic level determines control strategy: low = PFM, high = PWM, floating = auto-switching |
| 8 VCC | Internal 5 V LDO output | Provides regulated bias for internal circuits; requires 1 µF ceramic bypass to GND |
| 9 GND | Analog and digital reference ground | Common return for FB, SYNC, RT, MODE, ENA; must be star-connected to PGNDs |
| 10 PG | Open-drain Power Good indicator | Asserts when VOUT reaches 90% of nominal; requires external pull-up to VCC or VOUT |
| 11 SYNC | External clock input (200–400 kHz) | When driven, overrides internal oscillator; unused pin must be tied to GND |
| 12 RT | Frequency-setting resistor connection | Resistor value sets switching frequency per datasheet curve; no capacitor needed |
| 13 FB | Output voltage feedback input | Internally connected to 5 V reference; not used for factory-preset version (S6BP201A1AST2B20A) |
| 14 VOUT | Regulated 5 V output | Delivers up to 1 A; requires bulk and ceramic output capacitors per layout guidelines |
| 15 LX2 | Switch node for second inductor connection | Completes buck-boost inductor path; symmetric layout with LX1 critical for balance |
| 16 PGND2 | Power ground for high-side FET2 and low-side FET2 | Independent ground return improves thermal dissipation and reduces cross-talk |
| EP | Exposed thermal pad | Must be soldered to large copper pour tied to GND for thermal management and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Integrated four-FET buck-boost architecture | Eliminates need for 4 external MOSFETs and associated gate drivers, reducing solution size by >40% |
| Factory-preset 5 V output | Removes external feedback resistors and compensation network, simplifying design and improving production yield |
| Auto PWM/PFM mode switching | Maintains >90% efficiency from 1 mA to 1 A load, extending battery life in always-on automotive modules |
| 14 ms Power-On Reset timing | Ensures deterministic system startup sequence for microcontrollers and safety-critical peripherals |
| AEC-Q100 Grade-1 qualification | Validated for operation from –40 °C to +125 °C ambient, meeting automotive engine bay requirements |
Applications
| Body Control Module (BCM) | Automotive Gateway Module |
|---|---|
Use Scenario: Powering MCU, LIN transceivers, and door-lock actuators in centralized vehicle body electronics. IC Role / Device Role / Timing Role: Primary 5 V power rail generator handling wide-input transients during ignition and alternator load dumps. Use Value: Maintains stable 5 V output within 1 ms during 42 V load dump, preventing MCU brownout and communication loss. | Use Scenario: Supplying isolated 5 V rails for CAN FD, Ethernet AVB, and diagnostic interfaces in multi-protocol gateways. IC Role / Device Role / Timing Role: High-efficiency intermediate bus converter synchronizing to system clock to minimize EMI coupling into sensitive comms lines. Use Value: SYNC_IN capability enables deterministic switching alignment across multiple PMICs, reducing broadband noise in 100BASE-T1 PHY sections. |
| Instrument Cluster Display | Industrial Telematics Unit |
Use Scenario: Delivering clean 5 V power to TFT-LCD controllers, touch ICs, and backlight drivers in driver-facing displays. IC Role / Device Role / Timing Role: Low-noise buck-boost regulator with soft-start (0.9 ms) ensuring glitch-free display initialization at power-up. Use Value: 20 µA quiescent current extends backup battery runtime during vehicle sleep mode without compromising wake-up responsiveness. | Use Scenario: Powering GPS/GNSS receivers, cellular modems, and secure boot MCUs in fleet-tracking hardware deployed in harsh environments. IC Role / Device Role / Timing Role: Robust front-end DC/DC converter supporting extended temperature operation and transient immunity per ISO 7637-2. Use Value: Integrated OVP/UVP/OCP eliminates need for discrete protection ICs, reducing failure points in long-lifecycle industrial deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4264-AEC1 (Monolithic Power Systems) | 3.8–36 V input, 5 V/1.5 A output, requires external feedback resistors, no SYNC_IN, QFN-16 package | Lacks automotive-grade synchronization and cold-crank support below 3.8 V; suitable for non-critical infotainment rails | Select if higher output current is needed and external feedback is acceptable; verify cold-crank behavior separately |
| TPS63020-Q1 (Texas Instruments) | 1.8–5.5 V input, 3.3/5 V selectable output, 2 A max, requires external compensation, no factory preset, WQFN-16 | Cannot handle 42 V load dump; limited to post-regulated supplies; lacks AEC-Q100 Grade-1 thermal rating | Prefer for low-voltage battery-powered subsystems where input stays above 1.8 V; avoid for direct battery connection |
Compared with MPQ4264-AEC1 and TPS63020-Q1, S6BP201A1AST2B20A uniquely combines 2.5–42 V operation, factory-set 5 V, SYNC_IN, and AEC-Q100 Grade-1 in a single ETSSOP16 package-making it the only drop-in solution for BCM and gateway primary rails requiring cold-crank resilience and EMI-controlled switching.
Availability
S6BP201A1AST2B20A is available at Aetrix Electronics and suitable for Body Control Modules, Automotive Gateways, and Industrial Telematics Units requiring stable component supply across extended temperature ranges and automotive transient conditions.
Supply support for S6BP201A1AST2B20A 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 analog ICs.
S6BP201A1AST2B20A belongs to Infineon's automotive PMIC portfolio, engineered specifically for single-rail power conversion in body electronics and gateway systems where input voltage resilience, low quiescent current, and EMI control are mandatory.
FAQ
What is the purpose of the separate PGND1 and PGND2 pins?
PGND1 serves the first pair of internal FETs (high-side FET1 and low-side FET1), while PGND2 serves the second pair (high-side FET2 and low-side FET2). This separation prevents high-current switching noise from coupling into the control circuitry through shared ground paths, improving stability and EMI performance-especially critical in buck-boost topologies with bidirectional current flow.
Can the S6BP201A1AST2B20A operate without connecting the SYNC pin?
Yes. When SYNC is left unconnected or tied to GND, the IC operates using its internal oscillator set by the RT resistor. The SYNC function is optional and only required when system-level EMI reduction or clock domain alignment is needed. No configuration change or additional components are necessary for standalone operation.
Is external compensation required for stable operation?
No. The S6BP201A1AST2B20A uses internal compensation optimized for its factory-preset 5 V output and synchronous current-mode architecture. No external phase-compensation capacitors or resistors are needed-reducing bill-of-materials count and eliminating tuning effort during design validation.
How does the Power Good (PG) signal behave during startup and fault conditions?
The PG pin asserts high (open-drain pulled up externally) only when VOUT reaches ≥90% of nominal (4.5 V) and remains within ±4.5% window. During startup, it asserts after 14 ms POR delay; during faults like OVP, UVP, or OCP, it deasserts within 10 µs. PG is not asserted during enable delay or thermal shutdown recovery.
S6BP201A1AST2B20A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 42V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- Frequency - Switching:
- 200kHz ~ 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
S6BP201A1AST2B20A FAQ
1.How can I place an order for S6BP201A1AST2B20A through Aetrix?
Please submit a Request for Quotation (RFQ) for S6BP201A1AST2B20A 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 S6BP201A1AST2B20A reliable?
The price and inventory of S6BP201A1AST2B20A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S6BP201A1AST2B20A is usually 5 days.
3.What payment methods are accepted for S6BP201A1AST2B20A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S6BP201A1AST2B20A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S6BP201A1AST2B20A?
S6BP201A1AST2B20A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S6BP201A1AST2B20A 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 S6BP201A1AST2B20A?
For technical support, including S6BP201A1AST2B20A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S6BP201A1AST2B20A requirements.
6.How does Aetrix verify that S6BP201A1AST2B20A is sourced from the original manufacturer or authorized distributors?
All S6BP201A1AST2B20A 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 S6BP201A1AST2B20A meets industry standards.
7.What is the process for return or replacement of S6BP201A1AST2B20A?
All S6BP201A1AST2B20A units undergo pre-shipment inspection (PSI). If there is an issue with S6BP201A1AST2B20A, 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 S6BP201A1AST2B20A part is unused and in its original packaging.
Return procedure for S6BP201A1AST2B20A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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