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Infineon Technologies 111-4189PBF
- Part No.:
- 111-4189PBF
- Manufacturer:
- Infineon Technologies
- Package:
- 34-PowerVFQFN
- Datasheet:
-
111-4189PBF.pdf
- Description:
- IC REG BUCK ADJ 6A 34PQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,483
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Product details
Overview
IR38062 from Infineon Technologies is a 15 A synchronous buck DC-DC regulator with integrated MOSFETs, PMBus/I²C interface, and internal LDO enabling single 21 V input operation. It delivers 0.5–0.875×PVIN output voltage with ±0.5% reference accuracy, supports up to 1.5 MHz switching frequency, and operates across –40°C to +125°C junction temperature for high-current point-of-load power delivery in server and telecom systems.
For engineers reviewing the IR38062 datasheet, IR38062 pinout, IR38062 application, or IR38062 equivalent, key selection considerations include its dual-mode (analog/digital) configuration capability, true differential remote sensing, thermally compensated overcurrent protection, dedicated output voltage sensing during disable, and 5 mm × 7 mm PQFN package with validated thermal resistance (θJ-PCB = 2.05°C/W).
Technical Context
The IR38062 integrates a PWM controller, high-side (2.7–5.6 mΩ) and low-side (1.11–2.05 mΩ) MOSFETs, bootstrap diode, and LDO to support single-supply 5.5–21 V operation. Its block diagram confirms independent analog control loop (FB/COMP/RT/SYNC) coexisting with digital PMBus command set (66 commands) for telemetry, sequencing, and fault management.
It implements programmable soft-start with pre-bias startup, selectable FCCM/DCM mode via EN/FCCM pin, and dedicated OVP/PGood monitoring on Vsns - all active even when EN is low. The remote sense amplifier (RS+/RS−) provides true differential feedback, and SALERT doubles as analog temperature monitor (TMON) in non-PMBus use cases.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 15 A continuous - enables single-chip solution for high-current CPU/GPU core rails without external MOSFETs. |
| Input Voltage Range | 5.5–21 V - supported by internal LDO, eliminating need for auxiliary bias supply in most systems. |
| Output Voltage Range | 0.5 V to 0.875×PVIN - supports dynamic scaling for modern low-voltage processors and FPGAs. |
| Reference Accuracy | ±0.5% (0°C–85°C), ±1.0% (–40°C–125°C) - ensures tight regulation under thermal stress for mission-critical loads. |
| Switching Frequency | 225–1650 kHz - adjustable via RT resistor or external SYNC signal, enabling EMI optimization and inductor size reduction. |
| PMBus Commands | 66 standardized commands - enables full runtime configuration, telemetry (VOUT, IOUT, TEMP), fault logging, and sequencing without firmware changes. |
| Thermal Resistance | θJ-PCB = 2.05°C/W - validated PCB-level thermal path supports 15 A operation within 125°C TJ limit on standard 4-layer board. |
Pinout & Package
IR38062 uses a thermally enhanced 5 mm × 7 mm PQFN package with exposed thermal pad (PGND-connected) and 26-pin layout. Pins 23 and 26 are internally shorted but externally isolated per assembly drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN | Main power stage input | Connects to bulk input capacitors; requires low-ESL/ESR decoupling directly adjacent to PGND for stable high-di/dt operation. |
| SW | Power switch node | Drives output inductor; must be routed with minimal loop area to reduce EMI and ringing (3.3 nF snubber recommended). |
| FB | Inverting error amplifier input | Directly connects to output or remote sense amplifier; sets regulated voltage via external resistor divider. |
| VSNS | OVP and PGood sense input | Dedicated overvoltage detection path - remains active even when EN is low, ensuring safe shutdown behavior. |
| RT/SYNC | Frequency control / synchronization | Configures switching frequency in analog mode (via resistor); accepts external clock in digital mode for system-wide timing alignment. |
| SALERT/TMON | Alert output / analog temperature monitor | Open-drain SMBus alert; outputs voltage proportional to junction temperature when PMBus disabled - enables analog thermal monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | High-side (2.7 mΩ typ) and low-side (1.11 mΩ typ) MOSFETs eliminate external driver and discrete FET design complexity. |
| Dual-Mode Operation | Runs as fully programmable PMBus device or standalone analog regulator - no firmware required for basic functionality. |
| True Differential Remote Sensing | RS+/RS− inputs measure load voltage at point-of-use, compensating for PCB trace IR drop to maintain ±0.5% output accuracy. |
| Pre-Bias Soft-Start | Enables safe startup into pre-charged output capacitors - critical for hot-swap and multi-rail sequencing applications. |
| Dedicated Output Monitoring | VSNS-based OVP and PGood remain functional during EN deassertion, providing fail-safe rail supervision independent of enable state. |
Applications
| Server Core Rails | Network Processor Supplies |
|---|---|
|
Use Scenario: Powering CPU/GPU core voltage domains in 1U/2U rack servers with strict transient response and thermal constraints. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering dynamically scaled 0.7–0.85 V at up to 15 A with <10 µs load-step response. Use Value: Integrated MOSFETs and 2.05°C/W θJ-PCB enable compact, thermally robust design without heatsinks or airflow dependency. |
Use Scenario: Supplying ASICs and network processors in 5G baseband units requiring precise voltage tracking and sequencing. IC Role / Device Role / Timing Role: Sequencing-capable buck converter with Track_EN and Vp pins for synchronized ramp-up/down with companion rails. Use Value: PMBus-controlled tracking eliminates external timing ICs; real-time telemetry supports predictive thermal management. |
| Telecom Line Cards | Embedded AI Accelerators |
|
Use Scenario: Distributed power on carrier-grade line cards where reliability, EMI compliance, and long-term availability are mandatory. IC Role / Device Role / Timing Role: High-efficiency analog-mode regulator with FCCM forced-continuous conduction for low-noise, ripple-sensitive payloads. Use Value: Internal LDO allows single 12 V input; ±0.5% reference accuracy maintains BER performance across temperature and aging. |
Use Scenario: Powering edge AI inference accelerators with burst-mode current demands and tight voltage tolerance. IC Role / Device Role / Timing Role: Digital-configurable buck supplying 0.6–0.75 V at 12–15 A with real-time current/voltage/temperature telemetry via PMBus. Use Value: 66 PMBus commands enable dynamic voltage/frequency scaling (DVFS) and fault logging without host processor intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP8772GQ-Z | 12 A rating, 2.7–16 V input, no PMBus, only analog interface; smaller 4 mm × 4 mm QFN. | Lacks telemetry, sequencing, and digital configuration - suitable for cost-sensitive, fixed-output designs without system-level monitoring. | Select when PMBus is unnecessary and board space is constrained; verify thermal margin at 15 A with external MOSFETs. |
| TPS546D24RQF | 15 A, 3–18 V input, PMBus v1.3 compliant, but requires external gate drivers and MOSFETs; larger 6 mm × 6 mm QFN. | Higher BOM count and layout complexity; supports higher VIN max and more flexible phase control in multiphase configurations. | Choose for designs needing >21 V input or multiphase scalability; accept added component count and thermal management overhead. |
Compared with MP8772GQ-Z and TPS546D24RQF, the IR38062 uniquely combines 15 A integrated power stage, PMBus telemetry, and analog fallback in a thermally optimized 5 mm × 7 mm footprint - simplifying design while preserving configurability and observability.
Availability
IR38062 is available at Aetrix Electronics and suitable for server power delivery, telecom line card supplies, and embedded AI accelerator rails requiring stable component supply, long lifecycle support, and validated thermal performance.
Supply support for IR38062 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 specializing in power management, automotive, and industrial control solutions, with decades of expertise in high-efficiency DC-DC conversion.
The SupIRBuck™ product line delivers fully integrated, digitally configurable buck regulators targeting high-current, low-voltage point-of-load applications in datacenter, networking, and embedded computing infrastructure.
FAQ
Can the IR38062 operate without PMBus communication?
Yes - the IR38062 functions as a fully autonomous analog regulator when ADDR is floating and PMBus lines are unused. It retains all core features including remote sensing, soft-start, OVP, and PGood, with output voltage set by FB resistor divider and frequency set by RT resistor. Analog telemetry (IMON, TMON) remains accessible via SDA and SALERT pins.
What is the minimum output voltage achievable with IR38062?
The IR38062 supports output voltages down to 0.5 V, verified across –40°C to +125°C junction temperature and full 15 A load range. This is enabled by its precision 0.5% reference and low-noise error amplifier architecture, making it suitable for modern sub-0.6 V FPGA and ASIC core rails.
How does the IR38062 handle pre-biased outputs during startup?
The IR38062 implements hardware-enforced pre-bias start-up: when enabled, it monitors FB voltage before initiating switching and gradually ramps gate drive to avoid reverse current flow into a pre-charged output capacitor. This prevents inrush damage and ensures controlled, monotonic voltage rise.
Is external compensation required for stable operation?
Yes - COMP pin requires an external RC network (typically 1–10 kΩ resistor + 1–10 nF capacitor) between COMP and FB to stabilize the control loop. The exact values depend on output capacitance, inductance, and target crossover frequency; Infineon provides design calculators and reference schematics for common configurations.
111-4189PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- SupIRBuck®
- Package/Case:
- 34-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.2V
- Voltage - Input (Max):
- 21V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 18.38V
- Current - Output:
- 6A
- Frequency - Switching:
- 400kHz ~ 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 34-PQFN (5x7)
111-4189PBF FAQ
1.How can I place an order for 111-4189PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for 111-4189PBF 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 111-4189PBF reliable?
The price and inventory of 111-4189PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 111-4189PBF is usually 5 days.
3.What payment methods are accepted for 111-4189PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 111-4189PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 111-4189PBF?
111-4189PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 111-4189PBF 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 111-4189PBF?
For technical support, including 111-4189PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 111-4189PBF requirements.
6.How does Aetrix verify that 111-4189PBF is sourced from the original manufacturer or authorized distributors?
All 111-4189PBF 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 111-4189PBF meets industry standards.
7.What is the process for return or replacement of 111-4189PBF?
All 111-4189PBF units undergo pre-shipment inspection (PSI). If there is an issue with 111-4189PBF, 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 111-4189PBF part is unused and in its original packaging.
Return procedure for 111-4189PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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