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Infineon Technologies IR3086AMTRPBF
- Part No.:
- IR3086AMTRPBF
- Manufacturer:
- Infineon Technologies
- Category:
- Power Management - Specialized
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
IR3086AMTRPBF.pdf
- Description:
- IC CTLR XPHASE 28-MLPQ
- Quantity:
- Payment:
- Shipping:
Inventory:2,760
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Product details
Overview
IR3086AMTRPBF 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 ≤100ns minimum pulse width for 1MHz per-phase operation, integrates loss-less DCR current sensing with internal temperature compensation, and provides OVP (150ns response), phase fault detection, and programmable overtemperature protection. Used in high-current VRMs for server CPUs and AI accelerators.
For engineers reviewing the IR3086AMTRPBF datasheet, IR3086AMTRPBF pinout, IR3086AMTRPBF application, or IR3086AMTRPBF equivalent, key selection criteria include gate drive strength (3A peak, 200mA DC), ISHARE bus compatibility for multi-phase current sharing, Body Braking™ transient response enhancement, and thermal monitoring via VRHOT with user-programmable threshold using HOTSET.
Technical Context
The IR3086AMTRPBF implements feed-forward voltage-mode PWM control with trailing-edge modulation, where ramp slope is dynamically adjusted by input voltage via external RC on PWMRMP. Its current sense amplifier outputs a scaled differential voltage (×34) on ISHARE, enabling analog average-current sharing across phases via a 5-wire bus.
It features dual comparators for OVP (threshold = 100–160mV above DACIN) and phase fault (88–94% of DACIN), both with sub-250ns propagation delay. The Body Braking™ comparator disables GATEL when EAIN falls below 91% of DACIN, preventing negative output during turn-off and improving load-step recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gate Drive Current | 3A peak (100ns), 200mA DC per driver - enables fast switching of high-Qg MOSFETs in 1MHz VRMs |
| Min Pulse Width | <100ns - supports 1MHz per-phase operation without dead-time clipping |
| Current Sense Gain | 34 V/V (typ) - converts mV-level DCR voltage drop into robust ISHARE bus signal for multi-phase sharing |
| OVP Response Time | 150ns (typ) - ensures rapid shutdown before output overshoot exceeds safe margin |
| Body Braking Threshold | 91% of DACIN - triggers synchronous rectifier disable precisely at light-load transition to prevent reverse conduction |
| VRHOT Hysteresis | 3.0–9.0°C - prevents thermal cycling at junction temperature setpoint during sustained high-load operation |
| ISHARE Bus Drive | 5mA source/sink - sustains stable analog bus voltage across ≥8 phases with typical PCB trace capacitance |
Pinout & Package
IR3086AMTRPBF uses a thermally enhanced 20-lead MLPQ (4mm × 4mm, 0.5mm pitch) package with exposed thermal pad for high-power density VRM layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RMPIN+, RMPIN− | Ramp comparator inputs | Detect crossing of Control IC's triangle waveform to trigger phase timing; enable precise interleaving up to 8 phases |
| GATEH / GATEL | High-side / low-side gate drivers | Drive external N-channel MOSFETs with non-overlap logic; support bootstrap and direct-drive topologies |
| CSIN+, CSIN− | Current sense amplifier inputs | Measure inductor DCR voltage drop; internal temp compensation maintains accuracy across −40°C to +125°C |
| ISHARE | Current share bus node | Outputs V(DACIN) + 34×(V(CSIN+)−V(CSIN−)); wired-OR with other Phase ICs for analog current balancing |
| PHSFLT | Open-collector phase fault flag | Asserts low if sensed current deviates >9% from ISHARE bus - indicates MOSFET failure or inductor saturation |
| VRHOT | Overtemperature alert output | Open-drain output pulled low when junction exceeds HOTSET-programmed threshold - triggers system thermal shutdown |
Key Features
| Feature | Design Value |
|---|---|
| Loss-less Inductor Current Sense | DCR-based sensing eliminates shunt resistor power loss and thermal drift; supports <1mΩ DCR inductors |
| Programmable Phase Delay | RPHS1/RPHS2 resistor divider sets phase offset relative to Control IC oscillator - enables precise 8-phase interleaving |
| Body Braking™ | Disables GATEL during light-load transitions to eliminate reverse current and improve 10–90% load-step undershoot by ≥15% |
| Sub-100ns Minimum Pulse Width | Enables 1MHz per-phase switching without duty-cycle limitation - reduces output capacitor count by 30% vs. 500kHz designs |
| Internal DCR Temperature Compensation | Adjusts gain vs. copper resistivity drift - maintains ±2% current sense accuracy from −40°C to +125°C |
Applications
| Server CPU VRM | AI Accelerator Power Stage |
|---|---|
|
Use Scenario: 12-phase, 400A VRM supplying AMD EPYC or Intel Xeon Scalable processors in 1U rack servers. IC Role / Device Role / Timing Role: Phase IC managing one interleaved buck stage; synchronizes to Control IC's 5-wire analog bus for timing, current sharing, and fault reporting. Use Value: Enables compact layout with localized gate drive and current sense paths, reducing parasitic inductance and improving transient response to 200A/µs load steps. |
Use Scenario: High-density power delivery for NVIDIA A100 GPU or AMD MI300X compute modules requiring fast dynamic voltage scaling. IC Role / Device Role / Timing Role: One of eight parallel Phase ICs implementing adaptive phase shedding and precise current matching under DVFS commands. Use Value: Body Braking™ and 150ns OVP ensure rail stability during aggressive voltage transitions, preventing GPU reset or data corruption. |
| Network ASIC Power Supply | High-Performance FPGA Core Rail |
|
Use Scenario: 6-phase VRM powering Broadcom Tomahawk or Marvell Prestera switch ASICs with 0.75V/150A output. IC Role / Device Role / Timing Role: Provides per-phase current monitoring and fault isolation; PHSFLT signals individual phase failure to BMC for hot-swap recovery. Use Value: ISHARE bus enables real-time current balancing across phases, maintaining ≤3% phase current imbalance at full load. |
Use Scenario: 4-phase core supply for Xilinx Versal or Intel Stratix 10 FPGA with tight 10mV output tolerance and 100A peak current. IC Role / Device Role / Timing Role: Integrates DCR sensing and thermal monitoring to support dynamic power management and junction temperature-aware throttling. Use Value: VRHOT comparator with HOTSET-programmable threshold allows FPGA firmware to adjust thermal trip point based on die temperature mapping. |
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 |
|---|---|---|---|
| IR3087AMTRPBF | Higher gate drive (4A peak), extended VCCH range (up to 30V), added UVLO hysteresis - no change to ISHARE or Body Braking logic | Required for 12V-input VRMs with higher MOSFET Qg or wider input variation; identical pinout and bus protocol | Select when VCCH > 25V or gate charge > 60nC per phase; otherwise IR3086AMTRPBF remains optimal for 5–12V input systems |
| ISL6367IRZ-T | Integrates PWM comparator and gate drivers but lacks ISHARE bus; uses digital IMON interface and requires separate current sense IC | Suitable for legacy Intersil-based platforms; not interoperable with XPhase™ Control ICs or analog current sharing | Only for redesigns abandoning XPhase™ architecture; incompatible with IR3081A/IR3082A Control ICs and existing 5-wire bus infrastructure |
Compared with IR3087AMTRPBF, the IR3086AMTRPBF offers lower cost and sufficient drive for ≤60nC MOSFETs in 5–12V input VRMs; versus ISL6367IRZ-T, it preserves analog current sharing simplicity and eliminates need for external current sense amplifiers or digital bus translation.
Availability
IR3086AMTRPBF is available at Aetrix Electronics and suitable for server CPU VRMs, AI accelerator power stages, and network ASIC supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for IR3086AMTRPBF 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 VRM solutions.
The IR3086A belongs to Infineon's XPhase™ multiphase controller family, engineered specifically for scalable, high-current CPU/ASIC power delivery with analog current sharing, fast transient response, and integrated thermal/fault protection.
FAQ
What is the maximum supported switching frequency per phase?
The IR3086AMTRPBF supports ≤1MHz per-phase operation, enabled by its sub-100ns minimum pulse width and 150ns OVP response time. This is verified under conditions of CGATEH = 3.3nF, CGATEL = 6.8nF, and TJ ≤ 125°C. Operation above 1MHz risks pulse-width clipping and reduced duty-cycle range.
How does the ISHARE bus enable current balancing across multiple phases?
Each IR3086AMTRPBF outputs V(DACIN) + 34×(V(CSIN+)−V(CSIN−)) on ISHARE. When wired together, the bus settles to the average of all phase currents. The Control IC monitors this voltage and adjusts each phase's PWM duty cycle to equalize contribution - achieving ≤3% imbalance at full load without digital communication.
Can IR3086AMTRPBF be used without an XPhase™ Control IC?
No. The IR3086AMTRPBF requires a compatible XPhase™ Control IC (e.g., IR3081A or IR3082A) to provide BIASIN, DACIN, PWMRMP, EAIN, and RMPIN signals via the 5-wire analog bus. It lacks internal oscillator, VID decoder, or error amplifier - all system-level functions reside in the Control IC.
What thermal protection mechanisms are implemented?
The IR3086AMTRPBF implements two independent thermal protections: (1) VRHOT open-collector output triggered by junction temperature exceeding a user-programmable threshold set via HOTSET resistor divider; (2) internal thermal shutdown at 150°C junction temperature, forcing all gate drivers inactive until cooldown.
IR3086AMTRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- XPhase™
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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)
IR3086AMTRPBF FAQ
1.How can I place an order for IR3086AMTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IR3086AMTRPBF 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 IR3086AMTRPBF reliable?
The price and inventory of IR3086AMTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR3086AMTRPBF is usually 5 days.
3.What payment methods are accepted for IR3086AMTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR3086AMTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IR3086AMTRPBF?
IR3086AMTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IR3086AMTRPBF 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 IR3086AMTRPBF?
For technical support, including IR3086AMTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR3086AMTRPBF requirements.
6.How does Aetrix verify that IR3086AMTRPBF is sourced from the original manufacturer or authorized distributors?
All IR3086AMTRPBF 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 IR3086AMTRPBF meets industry standards.
7.What is the process for return or replacement of IR3086AMTRPBF?
All IR3086AMTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IR3086AMTRPBF, 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 IR3086AMTRPBF part is unused and in its original packaging.
Return procedure for IR3086AMTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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