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Infineon Technologies IR38363MTRPBFAUMA1
- Part No.:
- IR38363MTRPBFAUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 34-PowerVFQFN
- Datasheet:
-
IR38363MTRPBFAUMA1.pdf
- Description:
- IC REG BUCK ADJ 15A 34PQFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,278
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Product details
Overview
IR38363MTRPBFAUMA1 from Infineon Technologies is a 15 A synchronous buck regulator with integrated OptiMOS™ power stages, SVID and PMBus™ interfaces, 0.5% reference accuracy, 150–1500 kHz programmable switching frequency, and true differential remote sensing for Intel VR12.5/VR13 CPU core voltage regulation in server and high-end desktop platforms.
For engineers reviewing the IR38363MTRPBFAUMA1 datasheet, IR38363MTRPBFAUMA1 pinout, IR38363MTRPBFAUMA1 application, or IR38363MTRPBFAUMA1 equivalent, key selection criteria include SVID compliance, 15 A continuous output capability, PQFN 5 mm × 7 mm thermal performance (θJB = 4.16 °C/W), and PMBus™-programmable fault thresholds for OVP/OCP/UVLO/thermal shutdown.
Technical Context
This device implements a digitally enhanced analog PWM controller with feedforward line regulation, thermally compensated pulse-by-pulse current limiting, and hiccup-mode overcurrent protection. It integrates dual co-packaged MOSFETs (RDS(on) = 2.2 mΩ top / 0.78 mΩ bottom at Tj = 25°C) and an internal LDO enabling single 16 V input operation.
The SVID interface supports dynamic voltage identification and margining per Intel VR13 spec, while the 400 kHz PMBus™ interface enables real-time monitoring of input voltage, output voltage, output current, and die temperature via on-chip ADC and sensors - all operating across –40°C to +125°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 15 A continuous - supports Vmcp rail in Intel VR13-compliant CPU power delivery |
| Input Voltage Range | 5.3–16 V - accommodates single-supply operation using internal LDO or external 5 V bias |
| Reference Accuracy | ±0.5% at 0–85°C - ensures tight output voltage regulation for sub-1 V CPU core rails |
| Switching Frequency | 150–1500 kHz programmable via PMBus™ - enables optimization of size vs. efficiency trade-offs |
| Thermal Resistance θJB | 4.16 °C/W - validated on multi-layer PCB; enables high-power density layout without forced air |
| Remote Sensing | True differential RS+/RS− - eliminates IR drop error for accurate load-point voltage regulation |
| PMBus™ Address | 16 configurable addresses via ADDR pin resistor - supports multi-rail system management |
Pinout & Package
IR38363MTRPBFAUMA1 is housed in a thermally enhanced 5 mm × 7 mm PQFN package with exposed thermal pad (PGND-connected), optimized for low-inductance power routing and high-current PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN | Main power stage input | Connects to bulk input capacitors; must be routed with minimal loop area to PGND for EMI control |
| BOOT | High-side gate driver supply | Requires 0.1 µF capacitor to SW; 1 Ω series resistor mandatory if PVIN > 14 V |
| ENABLE | Power-on sequencing control | 0.6 V threshold start-up; supports voltage monitoring and controlled enable/disable timing |
| Vsns | OVP and Power Good sense | Direct connection to local output capacitor; enables fast overvoltage detection independent of EN state |
| FB | Error amplifier inverting input | Primary feedback node; accepts direct or remote-sense divider configuration for precision regulation |
| PGood | Open-drain status indicator | Active-high when output is within ±10% of target; remains functional even during EN low |
| SCL/SDA/SAlert# | PMBus™ communication interface | 400 kHz I²C-compatible bus; supports full telemetry, fault logging, and dynamic margining |
| RS+/RS−/RSo | Differential remote sense inputs/output | Enables Kelvin sensing at load; RSo feeds compensation network for stability under varying trace impedance |
Key Features
| Feature | Design Value |
|---|---|
| Integrated OptiMOS™ MOSFETs | Co-packaged 2.2 mΩ/0.78 mΩ pair eliminates external FET selection and layout complexity |
| Pre-bias start-up | Supports safe turn-on into pre-charged output rails - critical for multi-phase sequencing |
| Post-package trimmed dead-time | Minimizes shoot-through risk without requiring external timing components or calibration |
| Thermally compensated OCP | Pulse-by-pulse current limit adjusts with junction temperature - maintains consistent trip point across operating range |
| Dedicated PGood sensing | Independent analog comparator monitors output voltage with fixed offset DAC - ensures reliable power-good assertion under all conditions |
Applications
| Intel® VR13 CPU Core Rail | Server Memory Channel Regulator |
|---|---|
Use Scenario: Primary voltage regulator for Intel Xeon Scalable processor core domain (Vcore) in 2U/4U rack servers. IC Role / Device Role / Timing Role: SVID-controlled buck converter delivering dynamically scaled 0.7–1.0 V at up to 15 A with <10 µs transient response. Use Value: Enables precise Intel-defined VID transitions and margining for validation, reducing system-level timing margin overhead by 15%. | Use Scenario: Dedicated regulator for DDR4/DDR5 memory channel Vddq or Vpp in enterprise storage controllers. IC Role / Device Role / Timing Role: PMBus™-managed buck supplying stable 1.2 V or 1.1 V with remote sensing to compensate for PCB voltage drop. Use Value: Maintains ±0.5% output accuracy across 0–85°C ambient, eliminating need for external trim resistors or post-manufacturing calibration. |
| High-End Desktop GPU Auxiliary Rail | AI Accelerator Board Vmcp |
Use Scenario: Secondary power rail for GPU memory interface logic (e.g., GDDR6X VDDIO) in workstation-class graphics cards. IC Role / Device Role / Timing Role: 15 A SVID-regulated supply synchronized with main GPU VR via shared SVID bus and clock. Use Value: Delivers fast load-step response (<5 µs) and programmable OCP threshold matching GPU thermal envelope limits. | Use Scenario: Voltage regulator for memory controller power (Vmcp) in NVIDIA A100 or AMD MI250X accelerator modules. IC Role / Device Role / Timing Role: IR38363-configured as Vmcp rail per ordering designation, supporting Intel VR12.5 SVID protocol with 0.5 V–0.875×PVin output range. Use Value: Matches exact specification in Intel VR12.5 Rev 1.5 for Vmcp, ensuring compatibility with host BIOS and firmware power management stacks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IR38365MTRPbF | No PMBus™ interface; pin 17 is NC; lacks telemetry and programmable fault thresholds | Targeted for cost-sensitive VR12.5 systems where only SVID control and basic OCP are required | Select when telemetry, margining, and advanced fault logging are unnecessary and BOM cost is prioritized |
| MP8765GQ-Z | Monolithic 16 A buck with I²C (not PMBus™); no SVID support; 0.8% ref accuracy; 2.5–18 V input | Used in non-Intel embedded applications requiring wide VIN and compact footprint, not VR12.5/VR13 compliance | Select only for non-SVID designs; incompatible with Intel CPU power sequencing and VID protocols |
Compared with IR38365MTRPbF, IR38363MTRPBFAUMA1 adds full PMBus™ telemetry and programmability at 15 A rating, while MP8765GQ-Z offers wider input range but lacks SVID and VR compliance - making IR38363 the sole choice for Intel VR13 Vmcp implementations requiring digital supervision.
Availability
IR38363MTRPBFAUMA1 is available at Aetrix Electronics and suitable for server motherboard design, AI accelerator board development, and high-end desktop platform integration requiring stable component supply, long-term lifecycle support, and full Intel VR13 compliance.
Supply support for IR38363MTRPBFAUMA1 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 German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in silicon and silicon carbide power devices.
This part belongs to the OptiMOS™ IPOL family - engineered specifically for high-efficiency, space-constrained CPU and memory voltage regulation in datacenter and compute-intensive platforms.
FAQ
What is the maximum supported PVIN voltage for IR38363MTRPBFAUMA1?
The absolute maximum PVIN rating is 25 V, but recommended operating range is 5.3–16 V. Exceeding 16 V requires external biasing (bypassing internal LDO) and careful thermal derating due to increased conduction loss in integrated MOSFETs. Operation above 16 V voids guaranteed performance per datasheet specifications.
Does IR38363MTRPBFAUMA1 support pre-bias start-up?
Yes - it features enhanced pre-bias start-up that safely enables the regulator when the output rail is already charged. This prevents reverse current flow and ensures monotonic turn-on, which is essential for multi-rail systems where sequencing order must be preserved without external circuitry.
Can the IR38363MTRPBFAUMA1 be used without PMBus™ communication?
Yes - it operates fully in SVID-only mode. All core regulation functions (VID decoding, OCP, UVLO, thermal shutdown) remain active without PMBus™ initialization. The SVID interface alone suffices for basic Intel CPU power delivery; PMBus™ is optional for telemetry, margining, and advanced fault configuration.
What is the thermal pad connection requirement for the PQFN package?
The exposed thermal pad must be soldered to a solid PGND copper plane with ≥4 thermal vias (0.3 mm diameter, spaced ≤1 mm apart) connecting to inner ground layers. Failure to implement this results in junction temperature exceeding 125°C at rated 15 A load, triggering thermal shutdown and violating reliability specifications.
IR38363MTRPBFAUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 34-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.5V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 14V
- Current - Output:
- 15A
- Frequency - Switching:
- 150kHz ~ 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 34-PQFN (5x7)
IR38363MTRPBFAUMA1 FAQ
1.How can I place an order for IR38363MTRPBFAUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for IR38363MTRPBFAUMA1 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 IR38363MTRPBFAUMA1 reliable?
The price and inventory of IR38363MTRPBFAUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR38363MTRPBFAUMA1 is usually 5 days.
3.What payment methods are accepted for IR38363MTRPBFAUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR38363MTRPBFAUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IR38363MTRPBFAUMA1?
IR38363MTRPBFAUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IR38363MTRPBFAUMA1 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 IR38363MTRPBFAUMA1?
For technical support, including IR38363MTRPBFAUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR38363MTRPBFAUMA1 requirements.
6.How does Aetrix verify that IR38363MTRPBFAUMA1 is sourced from the original manufacturer or authorized distributors?
All IR38363MTRPBFAUMA1 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 IR38363MTRPBFAUMA1 meets industry standards.
7.What is the process for return or replacement of IR38363MTRPBFAUMA1?
All IR38363MTRPBFAUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with IR38363MTRPBFAUMA1, 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 IR38363MTRPBFAUMA1 part is unused and in its original packaging.
Return procedure for IR38363MTRPBFAUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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