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

Infineon Technologies IR3088MPBF

Name: IR3088MPBF
Brand: Infineon Technologies
SKU: IR3088MPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IR3088MPBF

Manufacturer:: Infineon Technologies

Category:: Power Management - Specialized

Package:: 20-VFQFN Exposed Pad

Datasheet:: IR3088MPBF.pdf

Description:: IC CONTROLLER PHASE 20L-MLPQ

Quantity:: RFQ Add To RFQ list

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Product details

Overview

IR3088MPBF from Infineon Technologies is a multiphase buck converter Phase IC designed to drive and monitor one phase in XPhase™-based CPU/ASIC power supplies. It delivers 2.5A average gate drive, supports sub-100ns minimum pulse width for 1MHz per-phase operation, integrates loss-less inductor current sensing with DCR temperature compensation, and implements Body Braking™ for transient response enhancement. Used in high-current VRMs for server CPUs.

For engineers reviewing the IR3088MPBF datasheet, IR3088MPBF pinout, IR3088MPBF application, or IR3088MPBF equivalent, key selection criteria include its 20-pin MLPQ package, programmable phase delay and feed-forward PWM ramp, phase fault and overtemperature detection, and compatibility with 5-wire analog bus control architecture.

Technical Context

The IR3088MPBF operates as a slave phase controller in an XPhase™ architecture, receiving timing, reference, and error signals via a 5-wire analog bus from a master Control IC (e.g., IR3081A). Its PWM block uses trailing-edge, feed-forward voltage-mode control with externally programmable ramp slope via R–C network on PWMRMP.

It embeds dual gate drivers (GATEH/GATEL) with non-overlap logic, a current sense amplifier (CSIN+/CSIN− → ISHARE), a share-adjust error amplifier, and two comparators for phase fault (PHSFLT) and junction overtemperature (VRHOT), all referenced to DACIN and BIASIN.

Key Specifications

Parameter	Value and Actual Design Meaning
Gate Drive Current	2.5A average; sufficient to drive large synchronous MOSFETs in high-current VRM phases without external buffers.
Min Pulse Width	<100ns; enables stable 1MHz per-phase switching for compact, high-density CPU power delivery.
Current Sense	Loss-less DCR-based with internal temperature compensation; eliminates sense resistor losses and maintains accuracy across thermal drift.
ISHARE Bus Drive	Single-wire average current share bus output; enables precise inter-phase current balancing without digital communication overhead.
Body Braking™	Disables synchronous MOSFET during turn-off; prevents negative output voltage and improves load-step undershoot recovery.
Overtemp Threshold	Programmable via HOTSET resistor divider; triggers open-drain VRHOT output at user-defined junction temperature (e.g., 125°C).
Phase Fault Detection	Compares sensed current against ISHARE bus voltage; asserts open-drain PHSFLT if phase fails to track shared current target.

Pinout & Package

20-lead thermally enhanced MLPQ (4mm × 4mm, 0.5mm pitch) with exposed thermal pad; optimized for low-inductance gate drive routing and high-power dissipation in multilayer VRM PCBs.

Pin/Terminal	Circuit Role	Design Meaning
RMPIN+, RMPIN−	PWM ramp comparator inputs	Detect crossing of control IC's triangle waveform to trigger phase timing; polarity swap selects rising/falling edge timing.
GATEH, GATEL	High-side and low-side gate drivers	Drive N-channel MOSFETs with 3A pulsed/200mA DC capability; integrated non-overlap logic prevents shoot-through.
CSIN+, CSIN−	Current sense differential inputs	Connect across inductor DCR; enable loss-less current measurement with internal 34× gain and temperature compensation.
ISHARE	Current share bus node	Outputs V(DACIN) + 34×(V(CSIN+)−V(CSIN−)); wired to other IR3088x devices to enforce equal per-phase current sharing.
PHSFLT, VRHOT	Open-drain fault outputs	Assert low on phase current mismatch or programmed overtemperature; require external pull-up for system-level fault signaling.
DACIN, BIASIN	Analog reference inputs	DACIN sets all internal voltage references (PWM threshold, fault levels); BIASIN powers internal bias circuitry and scales oscillator timing.

Key Features

Feature	Design Value
Programmable Feed-Forward PWM Ramp	RC network on PWMRMP automatically adjusts ramp slope with input voltage changes, maintaining loop stability under line transients.
Sub-100ns Minimum Pulse Width	Enables 1MHz per-phase operation in 4–8 phase VRMs, reducing output capacitor size and improving transient response bandwidth.
Internal Inductor DCR Temperature Compensation	Corrects for copper resistance drift over temperature, ensuring ±3% current sense accuracy from −40°C to +125°C junction.
5-Wire Analog Bus Interface	Eliminates point-to-point digital control lines; simplifies layout and reduces noise susceptibility in high-dI/dt CPU power stages.
Body Braking™ Transient Enhancement	Forces low-side MOSFET off during turn-off, preventing reverse current flow and reducing output voltage undershoot by up to 40mV.

Applications

Server CPU Voltage Regulator

AI Accelerator Power Module

Use Scenario: High-current, multi-phase VRM supplying 0.8–1.2V @ 300A+ to dual-socket Xeon Scalable processors in rack-mounted servers.

IC Role / Device Role / Timing Role: Phase IC executing one interleaved buck phase; synchronizes to master Control IC via 5-wire analog bus with programmable phase delay.

Use Value: Enables scalable 4–16 phase designs with tight current matching (<±2%) and fast load-step response (<10µs recovery) under dynamic workloads.

Use Scenario: Compact, high-efficiency power stage for NVIDIA A100 or AMD MI250X GPU modules requiring <10mV output ripple at 500kHz–1MHz switching.

IC Role / Device Role / Timing Role: Per-phase driver with loss-less DCR sensing and Body Braking™; interfaces with IR3081A or compatible XPhase™ Control IC.

Use Value: Reduces thermal stress on MOSFETs via accurate current sensing and eliminates negative voltage excursions during rapid load release.

Network ASIC Power Supply

High-Performance FPGA Core Rail

Use Scenario: 12-phase VRM powering 7nm/5nm network switch ASICs (e.g., Broadcom Tomahawk, Marvell Prestera) with aggressive dv/dt requirements.

IC Role / Device Role / Timing Role: Slave phase controller implementing feed-forward PWM and programmable overtemperature protection per phase.

Use Value: Maintains regulation during 100A/µs load steps while providing per-phase fault isolation to prevent system-wide shutdown.

Use Scenario: Low-noise, tightly regulated core supply (0.75–0.95V) for Xilinx Versal or Intel Agilex FPGAs in telecom and test equipment.

IC Role / Device Role / Timing Role: Phase IC delivering precise current sharing and sub-100ns pulse control in 6-phase interleaved topology.

Use Value: Achieves <±0.5% output voltage accuracy across temperature and load, critical for deterministic FPGA timing closure.

Equivalent & Alternatives

The following parts are listed as comparable options for similar multiphase buck phase controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IR3088MTRPBF	Identical electrical specs and pinout; differs only in tape-and-reel packaging (3000 pcs/reel vs. tube).	No functional difference; selected for automated SMT assembly vs. prototyping/hand-soldering.	Choose IR3088MTRPBF for volume production; IR3088MPBF for evaluation or low-volume builds.
IR3087MPBF	Lacks VRHOT overtemperature detection and programmable HOTSET; shares same gate drive, current sense, and ISHARE architecture.	Suitable for cost-sensitive applications where per-phase thermal monitoring is not required.	Select IR3087MPBF only when junction temperature monitoring is omitted from system safety design.

Compared with IR3088MPBF, IR3088MTRPBF offers identical performance in reel format for production, while IR3087MPBF removes thermal protection to reduce BOM cost-making it viable only where thermal derating is handled at system level.

Availability

IR3088MPBF is available at Aetrix Electronics and suitable for server CPU VRMs, AI accelerator power modules, and network ASIC supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for IR3088MPBF 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 IR3088x series belongs to Infineon's XPhase™ multiphase controller family, engineered specifically for high-current, low-voltage CPU and ASIC VRMs demanding precision current sharing, fast transient response, and robust fault protection.

FAQ

What is the function of the ISHARE pin?

The ISHARE pin outputs the amplified differential voltage across the inductor DCR (V(DACIN) + 34×[V(CSIN+)−V(CSIN−)]). When connected to identical pins on other IR3088x Phase ICs, it forms a single-wire average current share bus, enabling precise per-phase current balancing without digital communication or external op-amps.

How does Body Braking™ improve transient response?

Body Braking™ disables the synchronous low-side MOSFET during converter turn-off, preventing reverse current flow through the body diode. This eliminates negative output voltage excursions and reduces undershoot by up to 40mV during rapid load release, significantly improving stability in high-dI/dt CPU and GPU applications.

Can IR3088MPBF operate without a Control IC?

No. The IR3088MPBF is a slave-only Phase IC requiring a master XPhase™ Control IC (e.g., IR3081A) to provide DACIN, BIASIN, EAIN, PWMRMP, and timing signals via the 5-wire analog bus. It lacks internal oscillators, VID decoding, or system-level protection logic needed for standalone operation.

What is the maximum recommended switching frequency per phase?

The IR3088MPBF supports stable operation up to 1MHz per phase, enabled by its sub-100ns minimum pulse width, fast gate drivers (22–75ns rise/fall times), and low-propagation-delay comparators (70–240ns). Layout-dependent parasitics and MOSFET gate charge remain limiting factors beyond this limit.

IR3088MPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: XPhase™

Package/Case:: 20-VFQFN Exposed Pad

Packaging:: Strip

Product Status:: Obsolete

Applications:: Processor

Current - Supply:: 10mA

Voltage - Supply:: 8.4V ~ 14V

Operating Temperature:: 0°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-MLPQ (4x4)

IR3088MPBF FAQ

1.How can I place an order for IR3088MPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IR3088MPBF 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 IR3088MPBF reliable?

The price and inventory of IR3088MPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR3088MPBF is usually 5 days.

3.What payment methods are accepted for IR3088MPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR3088MPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IR3088MPBF?

IR3088MPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IR3088MPBF 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 IR3088MPBF?

For technical support, including IR3088MPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR3088MPBF requirements.

6.How does Aetrix verify that IR3088MPBF is sourced from the original manufacturer or authorized distributors?

All IR3088MPBF 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 IR3088MPBF meets industry standards.

7.What is the process for return or replacement of IR3088MPBF?

All IR3088MPBF units undergo pre-shipment inspection (PSI). If there is an issue with IR3088MPBF, 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 IR3088MPBF part is unused and in its original packaging.

Return procedure for IR3088MPBF:

1.Submit a request within 90 days.

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

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