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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Infineon Technologies IR38165MTRPBFAUMA1

Name: IR38165MTRPBFAUMA1
Brand: Infineon Technologies
SKU: IR38165MTRPBFAUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IR38165MTRPBFAUMA1

Manufacturer:: Infineon Technologies

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 24-PowerVFQFN

Datasheet:: IR38165MTRPBFAUMA1.pdf

Description:: IC REG BUCK ADJ 30A 24PQFN

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Product details

Overview

IR38165MTRPBFAUMA1 from Infineon Technologies is a 30 A synchronous buck regulator with Intel SVID interface, integrated OptiMOS™ power stages, and internal LDO enabling single 16 V input operation. It delivers 0.5 V to 0.875×PVin output voltage with ±0.5% reference accuracy, supports VR12.5/VR13 compliance, and operates from –40 °C to +125 °C junction temperature in server CPU Vccio power delivery.

For engineers reviewing the IR38165MTRPBFAUMA1 datasheet, IR38165MTRPBFAUMA1 pinout, IR38165MTRPBFAUMA1 application, or IR38165MTRPBFAUMA1 equivalent, key selection criteria include SVID-only interface (no PMBus™), 30 A continuous output current, 5 mm × 7 mm PQFN package with thermal resistance θJB = 4.16 °C/W, and dedicated remote sense inputs (RS+, RS–) for true differential voltage sensing at the load.

Technical Context

This device implements a voltage-mode PWM controller with feedforward line regulation and thermally compensated pulse-by-pulse current limiting. Its SVID interface handles dynamic voltage identification, margining, sequencing, and fault reporting-including input UVLO, output OVP/OCP, and thermal shutdown-with programmable thresholds via SVID commands.

The integrated MOSFET drivers support high-side and low-side OptiMOS™ switches with R_DS(on) of 2.2 mΩ (top) and 0.78 mΩ (bottom) at T_j = 25 °C. The dedicated PGood pin provides power-good indication with overvoltage protection active even when ENABLE is low, and pre-bias startup ensures reliable operation into pre-charged outputs.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Current	30 A continuous - supports high-current CPU Vccio rails without external current sharing.
Input Voltage Range	1.5 V to 16 V PVIN - accommodates wide-range intermediate bus architectures including 3.3 V, 5 V, and 12 V systems.
Output Voltage Range	0.5 V to 0.875×PVIN - enables adaptive scaling for Intel VR12.5/VR13 compliant processors.
Reference Accuracy	±0.5% at 0 °C to 85 °C - ensures tight output regulation under nominal operating conditions.
Switching Frequency	150 kHz to 1.5 MHz - adjustable via SVID to optimize efficiency vs. size trade-offs in compact PCB layouts.
Junction Temperature	–40 °C to +125 °C - qualified for enterprise server and high-end desktop thermal environments.
Package	5 mm × 7 mm PQFN - surface-mount footprint with exposed thermal pad for low θJB = 4.16 °C/W conduction path to PCB.

Pinout & Package

IR38165MTRPBFAUMA1 is housed in a thermally enhanced 5 mm × 7 mm PQFN package with 26-pin layout (pins 23 and 26 are NC). The exposed thermal pad must be soldered to a dedicated copper pour on the PCB for optimal thermal performance.

Pin/Terminal	Circuit Role	Design Meaning
1 PVIN	Main power stage input	Connects to bulk input capacitors; requires low-ESL/ESR decoupling near pin for stable high-frequency switching.
2 Boot	High-side gate driver supply	Drives top MOSFET gate; requires 0.1 µF capacitor to SW, with optional 1 Ω series resistor if PVIN > 14 V.
3 ENABLE	Global enable control	Active-high logic input with UVLO thresholds (0.55 V start / 0.35 V stop); enables system-level power sequencing.
5 Vsns	OVP and PGood sense node	Monitors local output voltage for overvoltage protection and power-good assertion independent of remote sense path.
6 FB	Error amplifier inverting input	Primary feedback node; connects to output or remote sense amplifier to set regulated voltage via resistor divider.
9 RS–, 10 RS+	Remote sense differential inputs	Enable true Kelvin sensing at load; RS– ties to load ground, RS+ to load VOUT to compensate for IR drop.
11 PGood	Open-drain power-good status	Asserts high after soft-start and valid output; remains active during ENABLE low for safe power-down monitoring.
14–16 SV_CLK, SV_DIO, SV_ALERT	SVID serial interface	Intel-standard 3-wire bus (clock/data/alert); pulled up to VDDIO/VCCIO; no PMBus™ functionality on this variant.
20 P1V8	Digital logic supply	1.8 V internal rail; bypassed with 10 µF capacitor to PGND for stable SVID command execution.
21 Vin	LDO input	Accepts external 5 V bias or connects to PVIN for single-rail operation; enables internal 5 V LDO output (VCC).
22 VCC	LDO output / IC bias	5 V ±5% regulated supply for control circuitry and gate drivers; bypassed with 10 µF capacitor.
24 SW	Power switch node	Connects to output inductor; carries high di/dt; requires short, low-inductance routing to minimize ringing.
12,25 PGND	Power ground return	Low-impedance return path for high-current power stage; must connect directly to input/output capacitor grounds.
13 LGND	Signal ground reference	Separate quiet ground for analog control circuits; tied to PGND at single point to avoid noise coupling.

Key Features

Feature	Design Value
Integrated OptiMOS™ Power Stage	Co-packaged 2.2 mΩ/0.78 mΩ R_DS(on) MOSFETs eliminate external discrete FETs and reduce board area by >30% vs. controller-only solutions.
True Differential Remote Sensing	RS+/RS– inputs provide accurate load-point regulation across PCB traces with up to 50 mV IR drop compensation.
Enhanced Pre-Bias Startup	Allows controlled ramp-up into pre-charged outputs without reverse current or latch-up-critical for multi-rail server sequencing.
Dedicated PGood with OVP Holdover	PGood remains asserted during ENABLE deactivation while maintaining overvoltage protection, enabling safe hot-swap and graceful shutdown.
Thermally Compensated Current Limit	Pulse-by-pulse OCP adjusts trip threshold with junction temperature to maintain consistent current handling across –40 °C to +125 °C.

Applications

Server CPU Vccio Rail

High-End Desktop VR

Use Scenario: Delivering tightly regulated 0.8–1.1 V to CPU I/O buffers in dual-socket 2U rack servers with strict transient response requirements.

IC Role / Device Role / Timing Role: Primary SVID-controlled buck regulator managing Vccio voltage scaling per processor request, with real-time telemetry via SV_DIO/SV_CLK.

Use Value: ±0.5% reference accuracy and feedforward line regulation ensure < ±5 mV output deviation during 10 A/µs load transients typical in DDR4/DDR5 memory subsystems.

Use Scenario: Powering PCIe root complex and chipset I/O in enthusiast-grade desktop motherboards with multi-phase VR design.

IC Role / Device Role / Timing Role: Standalone 30 A phase in multi-phase Vccio solution, synchronized via SVID clock and coordinated through SV_ALERT fault signaling.

Use Value: 5 mm × 7 mm PQFN footprint allows dense placement near CPU socket while θJB = 4.16 °C/W enables >25 W dissipation without forced airflow.

Intel VR12.5 Compliant Systems

Non-Core Processor Power

Use Scenario: Implementing VR12.5-compliant power delivery for Intel Xeon Scalable processors in edge AI inference servers.

IC Role / Device Role / Timing Role: SVID slave device executing VID code changes, margining commands, and thermal throttling responses within < 10 µs latency.

Use Value: SVID Rev 1.7 compliance guarantees interoperability with Intel reference platform firmware and BIOS power management stacks.

Use Scenario: Supplying auxiliary logic domains (e.g., uncore, graphics, fabric) in heterogeneous compute platforms requiring independent voltage control.

IC Role / Device Role / Timing Role: Secondary buck regulator managed alongside primary core VR, using separate SVID address (set via ADDR pin resistor) for isolated programming.

Use Value: 16 configurable PMBus™-compatible addresses (via external resistor on ADDR) allow up to 16 independent regulators on one SVID bus without address conflict.

Equivalent & Alternatives

The following parts are listed as comparable options for similar SVID-based buck regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IR38365MTRPbF	15 A rated output current; identical pinout and SVID interface; shares same 5 mm × 7 mm PQFN package.	Targeted for lower-current Vmcp rails instead of Vccio; reduced thermal mass and lower R_DS(on) bottom FET (0.78 mΩ same, but lower total loss at 15 A).	Select when system load current is ≤15 A and space-constrained layout permits shared footprint.
MP8765GQ-Z	30 A SVID buck with integrated drivers; differs in pinout (QFN-28), lacks true differential remote sense (single-ended FB only), and uses different SVID alert protocol timing.	Designed for cost-sensitive client platforms; lacks PGood holdover and pre-bias startup robustness required for server-grade reliability.	Choose only for non-server applications where SVID compatibility is sufficient and thermal margin exceeds 15 °C.

Compared with IR38365MTRPbF and MP8765GQ-Z, IR38165MTRPBFAUMA1 uniquely combines 30 A capability, true differential remote sensing, and PGood holdover-making it the only option qualified for mission-critical Vccio delivery in Intel VR13 server platforms.

Availability

IR38165MTRPBFAUMA1 is available at Aetrix Electronics and suitable for server motherboard design, high-end desktop VR development, and Intel VR12.5/VR13 compliant power system integration requiring stable component supply and full production traceability.

Supply support for IR38165MTRPBFAUMA1 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 MCUs, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949 standards.

IR38165MTRPBFAUMA1 belongs to Infineon's OptiMOS™ IPOL family-engineered specifically for high-efficiency, space-constrained, SVID-compliant CPU and SoC power delivery in datacenter and high-performance computing applications.

FAQ

Does IR38165MTRPBFAUMA1 support PMBus™ communication?

No. IR38165MTRPBFAUMA1 implements only the Intel SVID interface (SV_CLK, SV_DIO, SV_ALERT) and does not support PMBus™ commands or addressing. Pin 17 (SAlert#) is a no-connect, confirming absence of SMBus Alert functionality. This distinguishes it from the IR38163 variant, which includes full PMBus™ capability.

What is the maximum allowable PVIN voltage for reliable operation?

The absolute maximum PVIN rating is 25 V, but recommended operating range is 1.5 V to 16 V per datasheet Section 5. Exceeding 16 V risks violating the BOOT-to-SW voltage limit (max 6.5 V AC, 100 ns) and may cause premature failure of the internal high-side driver. For PVIN > 14 V, a 1 Ω resistor must be placed in series with the boot capacitor.

How is remote sensing implemented on IR38165MTRPBFAUMA1?

Remote sensing uses dedicated differential inputs RS+ and RS–, connected respectively to the load's output node and load ground. The internal remote sense amplifier rejects common-mode noise and compensates for PCB trace resistance, enabling accurate regulation at the point-of-load. The FB pin remains connected to the local output for stability, while RS+/RS– feed error correction into the control loop.

Can IR38165MTRPBFAUMA1 operate without an external bias supply?

Yes. The internal LDO accepts PVIN directly on the Vin pin (pin 21), generating a regulated 5 V VCC supply for control and gate drive circuits. This enables single-rail operation from 5.3 V to 16 V PVIN. When external 5 V bias is available, Vin can be tied to that source instead-reducing power loss and heat generation in the LDO.

IR38165MTRPBFAUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 24-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:: 30A

Frequency - Switching:: 150kHz ~ 1.5MHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 24-PQFN (5x7)

IR38165MTRPBFAUMA1 FAQ

1.How can I place an order for IR38165MTRPBFAUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for IR38165MTRPBFAUMA1 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 IR38165MTRPBFAUMA1 reliable?

The price and inventory of IR38165MTRPBFAUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR38165MTRPBFAUMA1 is usually 5 days.

3.What payment methods are accepted for IR38165MTRPBFAUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR38165MTRPBFAUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IR38165MTRPBFAUMA1?

IR38165MTRPBFAUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IR38165MTRPBFAUMA1 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 IR38165MTRPBFAUMA1?

For technical support, including IR38165MTRPBFAUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR38165MTRPBFAUMA1 requirements.

6.How does Aetrix verify that IR38165MTRPBFAUMA1 is sourced from the original manufacturer or authorized distributors?

All IR38165MTRPBFAUMA1 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 IR38165MTRPBFAUMA1 meets industry standards.

7.What is the process for return or replacement of IR38165MTRPBFAUMA1?

All IR38165MTRPBFAUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with IR38165MTRPBFAUMA1, 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 IR38165MTRPBFAUMA1 part is unused and in its original packaging.

Return procedure for IR38165MTRPBFAUMA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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