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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Management - Specialized

Infineon Technologies IR3084UMTRPBF

Name: IR3084UMTRPBF
Brand: Infineon Technologies
SKU: IR3084UMTRPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IR3084UMTRPBF

Manufacturer:: Infineon Technologies

Category:: Power Management - Specialized

Package:: 28-VFQFN Exposed Pad

Datasheet:: IR3084UMTRPBF.pdf

Description:: IC CTLR XPHASE 28-MLPQ

Quantity:: RFQ Add To RFQ list

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Product details

Overview

IR3084UMTRPBF from Infineon Technologies is a multiphase voltage regulator controller IC for CPU power delivery in VR10, VR11, Opteron, and Athlon64 platforms. It implements system-level control-including VID decoding, remote sensing, dynamic slew rate programming, hiccup over-current protection, and phase coordination-with ±300mV differential remote sense, 150kHz–1MHz programmable oscillator, and support for 1-to-X phase operation via companion XPhase™ Phase ICs.

For engineers reviewing the IR3084UMTRPBF datasheet, IR3084UMTRPBF pinout, IR3084UMTRPBF application, or IR3084UMTRPBF equivalent, key selection considerations include VID mode selection (VR10/VR11/AMD), VOSNS− float detection behavior, INTL_MD logic polarity, no-load setpoint current polarity inversion per VID mode, and REGDRV/REGSET bias regulator configuration for gate driver timing.

Technical Context

The IR3084UMTRPBF operates as the master controller in a distributed multiphase architecture: it decodes VID inputs (5-bit for AMD, 7-bit for Intel VR10/VR11), generates VDAC reference, drives EAOUT error signal, and coordinates timing across multiple IR XPhase™ Phase ICs via RMPOUT and REGDRV. Its dual-mode VID select (VIDSEL) configures DAC tables, startup sequences, enable thresholds, and no-load offset polarity.

Core analog blocks include a high-gain (100 dB), 10 MHz GBW error amplifier with programmable VSETPT offset; a dedicated VDRP buffer amplifier for load-line impedance setting; a 6.9V/6mA VBIAS regulator for internal and phase-IC reference; and a 200Ω VDAC output stage with external RC compensation. OCSET and SS/DEL pins implement programmable hiccup delay and soft-start with charge/discharge current ratio of 11.2:1.

Key Specifications

Parameter	Value and Actual Design Meaning
VID Support	7-bit VR10/VR11 (0.5% system accuracy) and 5-bit Opteron/Athlon64 (1% system accuracy); mode selected by VIDSEL voltage level
Oscillator Range	150 kHz to 1 MHz, set by ROSC resistor; enables precise switching frequency tuning for EMI and efficiency trade-offs
Differential Sense	±300 mV remote sense range on VOSNS−; supports accurate load regulation despite PCB trace resistance
VBIAS Regulator	6.9 V ±0.3 V at up to 6 mA; supplies stable reference for internal circuitry and Phase IC gate driver biasing
Over-Current Protection	Programmable hiccup mode with 150–350 µs OC delay; eliminates need for external RC on OCSET in typical designs
VOSNS− Float Detection	Detects open-circuit on VOSNS− trace at 1.2–2.6 V; forces VRRDY low and disables EAOUT to protect CPU
Enable Thresholds	VR10/VR11: 850 mV rising / 750 mV falling; AMD: 1.23 V rising / 1.17 V falling; hysteresis prevents chatter

Pinout & Package

IR3084UMTRPBF uses a thermally enhanced 28-lead MLPQ (Micro Leadframe Package Quad) with exposed thermal pad, optimized for high-power CPU VRM applications requiring low junction-to-board thermal resistance.

Pin/Terminal	Circuit Role	Design Meaning
1 VIDSEL	Mode selection input	Three-state logic: GND = VR10, floating ≈2.4V = VR11, 1.3V (via 6.49kΩ) = AMD; sets VID table, startup, and no-load offset polarity
2 INTL_MD	Processor vendor indicator output	Open-drain output: HIGH = Intel mode (VR10/VR11), LOW = AMD mode (Opteron/Athlon64); used for system-level mode verification
3–9 VID6–VID0	VID code inputs	7-bit parallel bus for VR10/VR11; lower 5 bits used for AMD; pulled up externally; blanked during startup
10 VOSNS−	Negative remote sense input	Connects to CPU ground point; float detection triggers fault if voltage exceeds 2.6 V relative to LGND
12 VDAC	Regulated DAC output	VID-derived reference voltage; buffered output with external RC for dynamic VID slew rate control and amplifier compensation
14 VSETPT	Error amp non-inverting input	Setpoint adjustment node: connected to VDAC via resistor to inject offset-negative for Intel, positive for AMD
15 IIN	Current sense sum input	Aggregates phase currents from XPhase™ ICs; preconditioned pull-down enables/disable current balancing before soft-start completion
18 EAOUT	Error amplifier output	Drives PWM comparators in Phase ICs; goes low during UVLO or fault to disable phase drivers
20 VBIAS	Internal reference regulator	6.9 V supply for internal analog blocks and Phase IC gate driver bias; 6 mA max output ensures stable timing references
26 SS/DEL	Soft-start and fault delay control	Capacitor-connected node controlling TD1–TD5 timing; charge/discharge currents define start-up ramp and OC hiccup window
27 VRRDY	Power-good/fault indicator	Open-collector output: driven low during startup, VOSNS− float, OC, or UVLO; requires external pull-up
28 ENABLE	Global enable input	Active-high logic input with 100 kΩ internal pull-down; thresholds differ by VID mode to match processor reset signaling

Key Features

Feature	Design Value
Multi-vendor VID compatibility	Single IC supports VR10, VR11, and AMD Opteron/Athlon64 protocols via hardware-selectable VIDSEL modes
Dynamic VID slew rate control	Programmable via external RC on VDAC pin, enabling controlled voltage transitions during P-state changes without overshoot
Integrated VBIAS and REGDRV regulators	6.9 V/6 mA bias rail + dedicated gate driver bias regulator (REGSET/REGDRV) eliminate need for external LDOs in XPhase™ systems
VOSNS− float protection	Detects broken sense trace within 600 ns and asserts VRRDY/EAOUT low-prevents unregulated high-voltage output to CPU
Programmable load line	VDRP-to-FB resistor sets output impedance; enables precise droop compensation matching CPU current-sense requirements

Applications

Desktop CPU VRM

Server Processor Power

Use Scenario: Dual-socket x86 server motherboard delivering regulated core voltage to AMD Opteron processors under dynamic load.

IC Role / Device Role / Timing Role: Master controller managing VID decoding, remote sensing, phase synchronization, and over-current response across four XPhase™ Phase ICs.

Use Value: VIDSEL pin configured for 1.3V (6.49kΩ) enables AMD-specific 5-bit VID table and legacy startup sequence; VOSNS− float detection prevents catastrophic failure if sense trace detaches during field operation.

Use Scenario: High-end desktop motherboard powering Intel Core 2 Duo with adaptive voltage scaling across P-states.

IC Role / Device Role / Timing Role: Central VR11 controller coordinating six-phase conversion, generating VDAC reference, and regulating via EAOUT-driven PWM comparators in Phase ICs.

Use Value: Programmable VID slew rate (via VDAC RC network) ensures smooth 0.5V→1.3V transitions during C-state entry/exit without violating CPU dv/dt limits.

Laptop CPU Power

Workstation VRM

Use Scenario: Mobile platform with Intel Pentium M requiring compact, efficient VR10-compliant core voltage regulation.

IC Role / Device Role / Timing Role: Primary voltage controller interfacing with single XPhase™ Phase IC; manages soft-start, UVLO, and hiccup OC protection.

Use Value: Small 28L MLPQ package enables dense layout near CPU socket; VBIAS regulator powers both internal circuits and Phase IC gate driver bias, reducing BOM count.

Use Scenario: Dual-CPU workstation supporting both Intel Xeon and AMD Opteron in interchangeable configurations.

IC Role / Device Role / Timing Role: Reconfigurable VR controller where VIDSEL pin is jumpered to support either vendor's VID protocol and startup timing.

Use Value: INTL_MD output provides firmware-readable status of active vendor mode; differential VOSNS− sense maintains ±1% regulation accuracy across 0–100A load range.

Equivalent & Alternatives

The following parts are listed as comparable options for similar multiphase CPU voltage regulator controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IR3085UMTRPBF	Successor IC with enhanced VR12 support, improved 0.3% system accuracy, and integrated MOSFET drivers (replaces external Phase ICs)	Designed for newer Intel VR12 platforms; lacks native Opteron 5-bit VID and legacy AMD startup sequence	Select when upgrading to VR12 compliance and consolidating Phase IC functionality into single-chip solution
ISL6322CRZ-T	Intersil VR11.1 controller with 6-bit VID, integrated MOSFET drivers, and digital interface; no AMD VID support	Targeted at Intel-only VR11.1 systems; requires different layout due to integrated drivers and QFN-48 package	Choose for Intel-centric designs needing digital telemetry and higher integration, but not for AMD or VR10 legacy systems

Compared with IR3084UMTRPBF, IR3085UMTRPBF offers tighter accuracy and VR12 readiness but drops AMD compatibility, while ISL6322CRZ-T provides digital control and driver integration at the cost of vendor flexibility and legacy VID support.

Availability

IR3084UMTRPBF is available at Aetrix Electronics and suitable for desktop CPU VRMs, server processor power modules, and workstation motherboard designs requiring stable component supply, long-term lifecycle support, and verified multiphase control performance.

Supply support for IR3084UMTRPBF 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 high-efficiency power conversion solutions.

The IR3084U belongs to Infineon's XPhase™ VR controller product line, designed specifically for scalable, multi-phase CPU voltage regulation in Intel and AMD platforms requiring precise VID decoding, remote sensing, and coordinated phase timing.

FAQ

What VID protocols does IR3084UMTRPBF support, and how is mode selection implemented?

IR3084UMTRPBF supports VR10 (7-bit extended), VR11 (7-bit), and AMD Opteron/Athlon64 (5-bit) VID protocols. Mode selection is hardware-controlled via the VIDSEL pin: grounded for VR10, floating at ~2.4 V for VR11, or biased to ~1.3 V (using 6.49 kΩ to LGND) for AMD. Each mode configures VID decoding, startup sequence, enable thresholds, and no-load offset polarity.

How does the VOSNS− float detection feature protect the CPU?

VOSNS− float detection monitors the negative remote sense pin for disconnection. If VOSNS− rises above 2.6 V relative to LGND-indicating an open trace-the IC immediately pulls VRRDY and EAOUT low within 600 ns, disabling all Phase ICs and preventing unregulated high-voltage output. This hardware-level fault response avoids reliance on software or external monitoring.

Can IR3084UMTRPBF operate without companion XPhase™ Phase ICs?

No. IR3084UMTRPBF is a dedicated Control IC and requires at least one IR XPhase™ Phase IC (e.g., IR3087, IR3088) to drive high-side/low-side MOSFETs. It provides VID decoding, error amplification, timing signals (RMPOUT, REGDRV), and fault management-but lacks gate drivers, current sensing, or PWM generation for power stages.

What is the function of the VDRP pin, and how is it used in load-line implementation?

VDRP is a buffered copy of the IIN current-sum signal. Connecting an external resistor from VDRP to FB sets the converter's effective output impedance (load line), enabling precise droop compensation that matches CPU current-sense requirements. The resistor value directly determines the voltage drop per ampere, critical for stability under transient loads.

IR3084UMTRPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: XPhase™

Package/Case:: 28-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Applications:: Processor

Current - Supply:: 14mA

Voltage - Supply:: 9.5V ~ 16V

Operating Temperature:: 0°C ~ 100°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 28-MLPQ (5x5)

IR3084UMTRPBF FAQ

1.How can I place an order for IR3084UMTRPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IR3084UMTRPBF 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 IR3084UMTRPBF reliable?

The price and inventory of IR3084UMTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR3084UMTRPBF is usually 5 days.

3.What payment methods are accepted for IR3084UMTRPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR3084UMTRPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IR3084UMTRPBF?

IR3084UMTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IR3084UMTRPBF 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 IR3084UMTRPBF?

For technical support, including IR3084UMTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR3084UMTRPBF requirements.

6.How does Aetrix verify that IR3084UMTRPBF is sourced from the original manufacturer or authorized distributors?

All IR3084UMTRPBF 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 IR3084UMTRPBF meets industry standards.

7.What is the process for return or replacement of IR3084UMTRPBF?

All IR3084UMTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IR3084UMTRPBF, 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 IR3084UMTRPBF part is unused and in its original packaging.

Return procedure for IR3084UMTRPBF:

1.Submit a request within 90 days.

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

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