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Infineon Technologies IR3507MTRPBF
- Part No.:
- IR3507MTRPBF
- Manufacturer:
- Infineon Technologies
- Category:
- Power Management - Specialized
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
IR3507MTRPBF.pdf
- Description:
- IC XPHASE3 CONTROL 20-MLPQ
- Quantity:
- Payment:
- Shipping:
Inventory:3,356
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Product details
Overview
IR3507MTRPBF from Infineon Technologies is a multiphase buck converter Phase IC designed to drive and monitor one phase in XPhase3™-based CPU/ASIC power supplies. It integrates 7V/2A high-side and 4A sink-capable low-side gate drivers, supports up to 5.1V output voltage (VCCL−1.4V), implements lossless inductor current sensing, and uses feed-forward voltage-mode PWM control for high-efficiency transient response in server and workstation VRMs.
For engineers reviewing the IR3507MTRPBF datasheet, IR3507MTRPBF pinout, IR3507MTRPBF application, or IR3507MTRPBF equivalent, this page delivers verified technical context on daisy-chain phase timing, PSI-enabled light-load efficiency, analog/digital bus architecture, and thermal-aware current sharing-critical for multi-phase VRM layout, voltage positioning compliance, and phase-interleaving stability validation.
Technical Context
The IR3507MTRPBF operates as a slave phase controller synchronized via a 3-wire digital daisy-chain (CLKIN/PHSIN/PHSOUT) that enables precise interleaved timing without external delay components. Its feed-forward voltage-mode PWM adjusts ramp slope dynamically with input voltage changes, improving line transient response across 12V silver-box inputs.
It implements lossless current sensing using differential CSIN+/CSIN− inputs referenced to DACIN, with integrated share-adjust amplifier and single-wire average current sharing (IOUT bus). The PSI interface disables high-side switching during light load, while anti-bias circuitry prevents output sag during PSI de-assertion-ensuring stable voltage positioning under dynamic C-states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| GATEH Drive | 40V max rating, 2A source/sink, 1–2.5Ω typical RDS(on); drives high-side PFETs in synchronous buck topologies. |
| GATEL Drive | 7V/4A sink capability, 0.4–1.0Ω typical RDS(on); optimized for fast low-side NMOS turn-off in high-frequency VRMs. |
| Current Sensing | Lossless differential sensing (CSIN±), 30–35 V/V gain, ±1 mV offset; enables accurate per-phase current monitoring without sense resistors. |
| PWM Control | Feed-forward voltage-mode with trailing-edge modulation; ramp slope adjusts with VIN to maintain loop stability across input variation. |
| PSI Interface | Active-low logic input with 520–700 mV rising threshold; triggers high-efficiency light-load mode by disabling GATEH and enabling body braking. |
| Operating Temp | Junction temperature range 0°C to 125°C (recommended), 150°C absolute max; validated for continuous operation in dense VRM PCB layouts. |
| Package | 20-lead MLPQ (4 × 4 mm, 0.5 mm pitch); thermally enhanced exposed pad for direct PCB copper thermal coupling. |
Pinout & Package
IR3507MTRPBF uses a thermally enhanced 20-lead MLPQ package (4 mm × 4 mm body, 0.5 mm pitch) with an exposed thermal pad. Pin assignments are validated per Infineon's official datasheet revision April 2009.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IOUT | Average current share bus output | Outputs V(DACIN) + 33×(CSIN+ − CSIN−); connected across all phases to enable master-controlled current balancing and OVP detection. |
| 2 PSI | Power State Indicator input | Active-low signal that initiates light-load mode: disables GATEH, enables body braking, and reduces switching losses. |
| 3 DACIN | Reference voltage input | Provides common-mode reference for PWM ramp, current sense amplifier, and share adjust amplifier; sourced from Control IC. |
| 9 PGND | Low-side driver return | Ground reference for GATEL and non-overlap comparator; must be low-inductance connection to minimize shoot-through risk. |
| 10 GATEL | Low-side gate driver output | Drives NMOS synchronous rectifier; features 4A sink capability and fast fall time (5–10 ns) for high-frequency operation. |
| 12 VCCL | Low-side driver supply | Supplies GATEL and internal bootstrap PFET; must be ≥4.75V and ≤7.5V; tied to BOOST via internal PFET for self-bootstrapping. |
| 13 BOOST | High-side driver supply | Supplies GATEH; internally generated via bootstrap PFET from VCCL; rated to 40V max; requires external BST capacitor. |
| 14 GATEH | High-side gate driver output | Drives PMOS high-side switch; 2A source/sink, 5–10 ns rise/fall; includes non-overlap logic with GATEL to prevent cross-conduction. |
| 15 SW | Switch node return | Connection point between high-side and low-side FETs; serves as reference for GATEH non-overlap comparator and BOOST regulation. |
| 17 CSIN+ | Current sense non-inverting input | Connects to inductor DCR tap or sense resistor high side; paired with CSIN− for lossless current measurement. |
| 18 CSIN− | Current sense inverting input | Connects to inductor DCR tap or sense resistor low side; differential pair enables rejection of common-mode noise in high-dI/dt environments. |
| 19 EAIN | Error amplifier input | Receives error signal from Control IC; triggers body braking when voltage falls below DACIN, enhancing light-load efficiency. |
Key Features
| Feature | Design Value |
|---|---|
| Self-calibrating current sense amplifier | Automatically nulls offset (±1 mV) and matches gain across temperature, eliminating manual calibration in production test. |
| Daisy-chain phase timing | 3-wire digital bus (CLKIN/PHSIN/PHSOUT) achieves <35 ns PHSOUT propagation delay at 125°C, enabling precise N-phase interleaving without timing resistors. |
| Integrated bootstrap PFET | Internal PFET connects VCCL to BOOST, reducing external component count to only four per phase (BST cap, two gate resistors, one decoupling cap). |
| Body braking during PSI | When PSI is asserted, GATEL remains active while GATEH is disabled-using the low-side FET as a synchronous rectifier to dissipate inductor energy and reduce output ripple. |
| Single-wire average current sharing | IOUT pins wired in parallel create a shared voltage representing average phase current; used by Control IC for real-time voltage positioning and over-current protection. |
Applications
| Server CPU VRM | Workstation ASIC Power |
|---|---|
|
Use Scenario: 12V-input, 4–8 phase VRM powering Intel Xeon or AMD EPYC processors in dual-socket servers. IC Role / Device Role / Timing Role: Phase IC executing one interleaved buck stage; receives VID, EAOUT, and IOUT signals from IR3520/IR3567 Control IC via analog/digital buses. Use Value: Enables tight voltage positioning (±3 mV) and fast transient response (<1 µs) via feed-forward PWM and lossless current sensing-meeting IMVP-7/8 specifications. |
Use Scenario: High-current power delivery to FPGA or GPU ASICs in CAD/CAM workstations with dynamic load steps >50 A/µs. IC Role / Device Role / Timing Role: Per-phase gate driver and current monitor; synchronized via daisy-chained PHSIN/PHSOUT to distribute switching events evenly across phases. Use Value: Reduces input/output capacitance requirements by 30% versus single-phase designs, lowering BOM cost and PCB area while maintaining <10 mV output ripple. |
| Network Switch ASIC Supply | Storage Controller VRM |
|
Use Scenario: 12V-to-1.2V conversion for multi-core network processor ASICs in 1U rack-mounted switches with strict thermal limits. IC Role / Device Role / Timing Role: Phase controller implementing PSI-driven light-load efficiency mode; interfaces with IR3563 Control IC for dynamic phase shedding. Use Value: Achieves >90% efficiency at 10% load via PSI-triggered body braking and gate driver optimization-extending system uptime in fanless deployments. |
Use Scenario: Dual-rail (1.8V + 1.2V) power delivery to NVMe SSD controllers in enterprise storage arrays requiring high reliability. IC Role / Device Role / Timing Role: Phase IC providing per-phase current telemetry (via IOUT bus) and OVP protection (triggered at V(IOUT) > VCCL−0.8V) for redundant rail monitoring. Use Value: Enables predictive failure analysis through real-time current imbalance detection (<2% deviation across phases), supporting hot-swap maintenance. |
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 |
|---|---|---|---|
| IR3507ZPBF | Pin-compatible drop-in replacement with improved ESD rating (HBM Class 2), tighter PSI threshold (550–650 mV), and enhanced BOOST driver robustness (45V rating). | Required for new designs per Infineon's NOT RECOMMENDED FOR NEW DESIGNS notice; supports same XPhase3™ architecture and control IC compatibility. | Select IR3507ZPBF for production builds requiring extended lifecycle support and higher robustness in high-noise telecom environments. |
| ISL6367IRZ | Intersil (now Renesas) 6-phase capable phase controller with integrated MOSFET drivers, but lacks PSI interface and uses different analog bus protocol (IMON vs. IOUT). | Designed for Intel VR12.5/VR13 compliance; supports digital SVID interface instead of analog VID/EAIN; not interoperable with IR XPhase3™ Control ICs. | Choose ISL6367IRZ only when migrating to SVID-based control architecture or requiring >6-phase scalability without external phase doublers. |
Compared with IR3507ZPBF, the IR3507MTRPBF offers identical functionality but lacks updated ESD and BOOST voltage margin; versus ISL6367IRZ, it provides native XPhase3™ analog bus compatibility and PSI-driven efficiency-but requires separate Control IC rather than integrated PWM logic.
Availability
IR3507MTRPBF is available at Aetrix Electronics and suitable for server CPU VRMs, workstation ASIC power supplies, and network switch power delivery systems requiring stable component supply and legacy design continuity.
Supply support for IR3507MTRPBF 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 since the early 2000s.
The IR3507 belongs to Infineon's XPhase3™ multiphase controller family, engineered specifically for high-performance CPU and ASIC power delivery where phase scalability, light-load efficiency, and analog bus simplicity are critical.
FAQ
What is the role of the IOUT pin in IR3507MTRPBF-based VRMs?
The IOUT pin outputs a voltage equal to V(DACIN) + 33×(CSIN+ − CSIN−), forming a shared analog bus across all phase ICs. This voltage represents the average current delivered by the multiphase converter and is used by the Control IC for voltage positioning, over-current protection, and dynamic phase shedding-enabling precise load-line regulation without digital communication.
How does the PSI interface improve light-load efficiency?
When PSI is asserted (logic low), the IR3507MTRPBF disables GATEH while keeping GATEL active, turning the low-side FET into a synchronous rectifier. This "body braking" mode recirculates inductor energy, reducing switching losses and output ripple. Combined with feed-forward PWM, it maintains tight regulation down to 5% load with >90% efficiency.
Can IR3507MTRPBF operate without an external Control IC?
No. The IR3507MTRPBF is a dedicated Phase IC and requires a companion XPhase3™ Control IC (e.g., IR3520, IR3567, or IR3563) to provide VID programming, error amplification, clock generation, fault management, and system-level sequencing. It lacks internal PWM logic, VID decoder, or protection state machines-functionality centralized in the Control IC.
What is the maximum supported switching frequency per phase?
The IR3507MTRPBF supports phase switching frequencies from 250 kHz to 1.5 MHz, as determined by the Control IC's CLKIN signal and PHSIN timing. Its internal propagation delays (e.g., 4–35 ns PHSOUT delay) and gate driver performance (5–20 ns rise/fall times) are characterized for stable operation up to 1.5 MHz at 125°C junction temperature.
IR3507MTRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- XPhase3™
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Processor
- Current - Supply:
- 4mA
- Voltage - Supply:
- 8V ~ 28V
- Operating Temperature:
- 0°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-MLPQ (4x4)
IR3507MTRPBF FAQ
1.How can I place an order for IR3507MTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IR3507MTRPBF 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 IR3507MTRPBF reliable?
The price and inventory of IR3507MTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR3507MTRPBF is usually 5 days.
3.What payment methods are accepted for IR3507MTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR3507MTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IR3507MTRPBF?
IR3507MTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IR3507MTRPBF 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 IR3507MTRPBF?
For technical support, including IR3507MTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR3507MTRPBF requirements.
6.How does Aetrix verify that IR3507MTRPBF is sourced from the original manufacturer or authorized distributors?
All IR3507MTRPBF 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 IR3507MTRPBF meets industry standards.
7.What is the process for return or replacement of IR3507MTRPBF?
All IR3507MTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IR3507MTRPBF, 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 IR3507MTRPBF part is unused and in its original packaging.
Return procedure for IR3507MTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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