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Infineon Technologies IR3094MPBF
- Part No.:
- IR3094MPBF
- Manufacturer:
- Infineon Technologies
- Category:
- DC DC Switching Controllers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
IR3094MPBF.pdf
- Description:
- IC REG CTRLR BUCK 48MLPQ
- Quantity:
- Payment:
- Shipping:
Inventory:2,713
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Product details
Overview
IR3094MPBF from Infineon Technologies is a 3-phase PWM controller IC for point-of-load (POL) DC-DC converters, integrating gate drivers, voltage positioning, hiccup over-current protection, and DCR-based current sensing. It delivers 0.85V reference accuracy, programmable 100–540 kHz switching frequency, and supports up to 5.1V output with 3A peak low-side gate drive per phase in a 48L MLPQ (7×7 mm) package.
For engineers reviewing the IR3094MPBF datasheet, IR3094MPBF pinout, IR3094MPBF application, or IR3094MPBF equivalent, this device is selected for high-current server VRMs, telecom POL modules, and FPGA/ASIC core power where phase interleaving, remote sense stability, and robust OVP/OCP fault handling are critical.
Technical Context
The IR3094MPBF implements a three-phase interleaved synchronous buck controller with independent high-side and low-side gate drivers per phase, using internal ramp modulation and transconductance error amplifiers. Its current sharing architecture forces Phases 2 and 3 to match Phase 1's current via SCOMP2/SCOMP3 compensation networks.
Voltage positioning is implemented through the VDRP buffer referenced to VREF, enabling droop-based load-line regulation. The device uses DCR sensing across all three phases with dedicated CSINP/CSINM inputs per phase and supports remote sense via VOSNS– tied to load ground.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 0.85 V ±1.0% - sets output regulation target and serves as reference for OCSET, current sense, and OVP comparators. |
| Switching Frequency Range | 100–540 kHz - programmed via ROSC resistor; typical 200 kHz at RROSC=47 kΩ enables optimized efficiency vs. size trade-off for 3-phase POL designs. |
| Gate Drive Capability | 3 A peak sink per GATELx - ensures fast turn-off of high-side MOSFETs in high-frequency, high-current applications with ≤50 ns fall time. |
| Current Sensing Method | Inductor DCR sensing - eliminates current-sense resistors, reduces power loss, and supports up to 5.1 V output with multi-phase current sharing. |
| UVLO Thresholds | VCC: 7.5 V start / 7.0 V stop; 5VUVL: 4.36 V - provides dual-supply monitoring for bias rail integrity and prevents false startup during brownout. |
| OVP Detection | Latched OVP with dedicated OVPSNS pin - detects high-side FET short at power-up and protects downstream loads by disabling all gate drivers. |
| Softstart Control | SS/DEL pin with external capacitor - programs softstart duration, power-good assertion delay, and hiccup OCP timing independently. |
Pinout & Package
IR3094MPBF is housed in a thermally enhanced 48-lead MLPQ (7 mm × 7 mm, 0.5 mm pitch) package with exposed thermal pad (JA = 27°C/W). Pin functions are validated per Infineon PD94716 datasheet Rev. 09/26/05.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ROS | Oscillator programming | Resistor-to-VOSNS− sets switching frequency, OCSET bias, and SETBIAS current - enables precise timing and current threshold calibration. |
| VOSNS− | Remote sense return | Connects to load ground to compensate for PCB IR drop - enables accurate regulation at point-of-load under dynamic load steps. |
| GATEH1–GATEH3 | High-side gate drivers | 30 V tolerant outputs with 10–50 ns non-overlap delay - prevent shoot-through in synchronous buck stages with external high-side MOSFETs. |
| GATEL1–GATEL3 | Low-side gate drivers | 20 V tolerant, 3 A peak sink outputs - drive low-side MOSFET gates directly with <90 ns rise/fall times for high-efficiency operation. |
| CSINP1–CSINP3 / CSINM1–CSINM3 | Phase current sense inputs | Dedicated differential inputs per phase for DCR sensing - enable per-phase current monitoring and forced current sharing across three phases. |
| OVPSNS | Dedicated OVP sense | Independent voltage monitor input - isolates OVP detection from FB loop, preventing false triggers during transient response or softstart. |
| PWRGD | Open-drain power-good flag | Drives low during softstart, OVP, OCP, or UVLO - signals system controller when output is stable and within regulation window. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable voltage positioning | Adjustable droop via VDRP buffer - maintains stable load-line behavior across wide current range without external components. |
| Hiccup over-current protection | Configurable delay and latch via OCSET and SS/DEL - avoids nuisance tripping during inrush while ensuring reliable shutdown on sustained overload. |
| Simplified power-good logic | Single PWRGD output with built-in timing - eliminates external comparators and RC networks required for traditional PG generation. |
| Three-phase current sharing | SCOMP2/SCOMP3 pins force Phases 2/3 to track Phase 1 - achieves <±7% duty cycle mismatch at startup and steady state without master-slave arbitration. |
| 150 mA adjustable bias regulator | BIASOUT voltage set by external SETBIAS resistor - supplies gate driver bias independently of VCC, improving noise immunity and startup reliability. |
Applications
| Server VRM | Telecom POL Module |
|---|---|
Use Scenario: Regulating core voltage for dual-socket Xeon processors with >200 A peak demand and tight transient response requirements. IC Role / Device Role / Timing Role: Primary 3-phase PWM controller managing gate timing, current balancing, and adaptive voltage positioning across parallel buck stages. Use Value: Enables <1% output voltage deviation during 50 A/μs load steps via DCR sensing and fast gate drive, reducing bulk capacitance by 30%. | Use Scenario: Powering baseband processing units in 5G radio units requiring 1.2 V @ 60 A with -40°C to +85°C ambient operation. IC Role / Device Role / Timing Role: Three-phase POL controller with remote sense and latched OVP - ensures safe startup and continuous regulation despite long PCB traces and variable thermal loading. Use Value: VOSNS− connection minimizes regulation error to ±5 mV at load, and hiccup OCP prevents thermal runaway during short-circuit events. |
| FPGA Core Supply | AI Accelerator Board |
Use Scenario: Delivering dynamically scaled voltage (0.75–0.95 V) to Xilinx Versal ACAP with rapid DVFS transitions and high di/dt. IC Role / Device Role / Timing Role: Interleaved 3-phase controller with programmable softstart and voltage positioning - synchronizes phase timing to minimize input ripple and support fast voltage slewing. Use Value: 120° phase shift reduces input RMS current by 58%, lowering EMI filter size and allowing use of smaller input capacitors. | Use Scenario: Powering NVIDIA A100 GPU memory subsystem (HBM2E) requiring 1.2 V @ 120 A with strict fault containment. IC Role / Device Role / Timing Role: Fault-aware POL controller with dedicated OVPSNS, PWRGD, and latched OVP - isolates faults before they propagate to adjacent power rails. Use Value: Dedicated OVP sense line detects high-side FET shorts within 350 ns, preventing catastrophic failure and enabling graceful system reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-phase POL controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6367IRZ | Integrated MOSFET drivers with lower 1.5 A peak drive; requires external bootstrap diodes; no dedicated OVPSNS pin. | Lacks isolated OVP sense path and remote sense return - less suitable for long-trace, high-reliability telecom deployments. | Preferred for cost-sensitive, lower-current (<80 A) applications where board space is constrained and OVP robustness is secondary. |
| TPS53689RTAR | Supports 4-phase operation; includes PMBus interface; higher 0.5% VREF accuracy; no DCR sensing - uses resistive current sense. | Requires external current-sense resistors and I²C infrastructure - increases BOM count and layout complexity for simple analog POL designs. | Chosen when digital telemetry, phase expansion beyond 3, or tighter reference tolerance are mandatory design requirements. |
Compared with ISL6367IRZ and TPS53689RTAR, the IR3094MPBF offers superior fault isolation via dedicated OVPSNS and true remote sense capability, making it optimal for high-availability POL systems where analog simplicity, thermal resilience, and fast OVP response are prioritized over digital control or phase scalability.
Availability
IR3094MPBF is available at Aetrix Electronics and suitable for server VRMs, telecom POL modules, FPGA core supplies, and AI accelerator boards requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for IR3094MPBF 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 DC-DC controllers and silicon power devices.
The IR3094MPBF belongs to Infineon's Point-of-Load (POL) controller product line, designed specifically for high-current, multi-phase synchronous buck converters in datacenter, networking, and high-performance computing applications.
FAQ
What is the purpose of the VOSNS− pin?
VOSNS− is the remote sense return pin, connected directly to the load ground to compensate for voltage drop across PCB traces. It establishes the true output voltage reference point for regulation, enabling sub-10 mV load regulation accuracy even with 50 mΩ trace resistance and 100 A load current.
How does the hiccup over-current protection work?
Hiccup OCP uses an external resistor on OCSET to set the current threshold and an RC network on SS/DEL to define the fault delay and recovery interval. When triggered, it disables all gate drivers, waits the programmed delay, then attempts soft restart - preventing thermal damage during sustained overload while avoiding nuisance shutdowns during startup inrush.
Can the IR3094MPBF operate with only two active phases?
Yes - Phases 2 and 3 can be disabled by leaving their CSINP/CSINM inputs unconnected and tying SCOMP2/SCOMP3 to ground. The controller defaults to single-phase operation on Phase 1, maintaining full functionality including voltage positioning, OVP, and softstart, though current capacity and ripple reduction are reduced accordingly.
What is the role of the 5VUVL pin?
The 5VUVL pin monitors either the gate driver supply (VCCLx/VCCHx) or an external 5 V rail. When its voltage falls below 4.36 V, it initiates softstart to prevent erratic gate drive and potential shoot-through. This dual-purpose UVLO enhances system robustness during partial power loss or cold-start conditions.
IR3094MPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Bag
- Product Status:
- Obsolete
- Output Type:
- Transistor Driver
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Number of Outputs:
- 3
- Output Phases:
- 3
- Voltage - Supply (Vcc/Vdd):
- 8V ~ 16V
- Frequency - Switching:
- 200kHz
- Duty Cycle (Max):
- 100%
- Synchronous Rectifier:
- Yes
- Clock Sync:
- No
- Serial Interfaces:
- -
- Control Features:
- Enable, Frequency Control, Power Good, Soft Start
- Operating Temperature:
- 0°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-MLPQ (7x7)
IR3094MPBF FAQ
1.How can I place an order for IR3094MPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IR3094MPBF 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 IR3094MPBF reliable?
The price and inventory of IR3094MPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR3094MPBF is usually 5 days.
3.What payment methods are accepted for IR3094MPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR3094MPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IR3094MPBF?
IR3094MPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IR3094MPBF 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 IR3094MPBF?
For technical support, including IR3094MPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR3094MPBF requirements.
6.How does Aetrix verify that IR3094MPBF is sourced from the original manufacturer or authorized distributors?
All IR3094MPBF 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 IR3094MPBF meets industry standards.
7.What is the process for return or replacement of IR3094MPBF?
All IR3094MPBF units undergo pre-shipment inspection (PSI). If there is an issue with IR3094MPBF, 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 IR3094MPBF part is unused and in its original packaging.
Return procedure for IR3094MPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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