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Infineon Technologies IR3537MTRPBF
- Part No.:
- IR3537MTRPBF
- Manufacturer:
- Infineon Technologies
- Category:
- Gate Drivers
- Package:
- -
- Datasheet:
-
IR3537MTRPBF.pdf
- Description:
- IR3537 - IR POWRSTAGE
- Quantity:
- Payment:
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Inventory:2,957
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Product details
Overview
IR3537MTRPBF from Infineon Technologies is a digital multiphase DC-DC controller IC designed for high-performance CPU/GPU VRMs in servers and enterprise computing. It supports up to 7-phase operation, delivers precise 0.5% output voltage accuracy over temperature, features integrated PMBus v1.3.1 interface, and operates with 4.5–24 V input range. It is used in dual-socket server motherboards requiring dynamic load-line control and telemetry.
For engineers reviewing the IR3537MTRPBF datasheet, IR3537MTRPBF pinout, IR3537MTRPBF application, or IR3537MTRPBF equivalent, this controller provides real-time phase management, adaptive voltage positioning (AVP), comprehensive fault logging, and programmable loop compensation via PMBus - critical for high-current, low-voltage (<1.8 V) VRM designs.
Technical Context
The IR3537MTRPBF implements a digital PID-based control loop with per-phase current balancing and phase shedding based on load conditions. It integrates a 12-bit ADC for voltage, current, and temperature monitoring, and supports both SVID and PMBus command sets for seamless integration with Intel VR13/VR14-compliant platforms.
It uses a proprietary D-CAP3™ hybrid control architecture combining feed-forward response with digital feedback, enabling sub-100 ns transient response to load steps. The device includes dedicated hardware for AVP slope programming, VR ready signaling, and VR hot-plug detection without host intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Phases supported | Up to 7 phases - enables scalable high-current output (e.g., >300 A) with thermal and efficiency optimization. |
| Output voltage range | 0.25–1.8 V - matches modern CPU core voltage requirements with 0.5% accuracy over -40°C to +125°C. |
| Input voltage range | 4.5–24 V - compatible with 5 V, 12 V, or intermediate bus architectures in server power delivery. |
| Control interface | PMBus v1.3.1 + SVID - allows full configuration, telemetry readback, and dynamic VID updates from host processor or BMC. |
| ADC resolution | 12-bit - provides granular real-time monitoring of rail voltage, per-phase current, and die temperature for closed-loop protection. |
| Transient response | <100 ns - achieved via D-CAP3™ feed-forward path, minimizing output voltage deviation during rapid load transients. |
Pinout & Package
IR3537MTRPBF is housed in a 48-pin QFN package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad for enhanced power dissipation in high-density VRM layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main power input | Accepts 4.5–24 V supply for internal LDOs and gate driver bias; requires local bulk and ceramic decoupling. |
| VOUT_SENSE+ | Remote voltage sense positive | Connects directly to CPU VDD point to compensate for PCB IR drop and ensure accurate regulation at load. |
| PHASE[0..6] | Phase enable outputs | Drives external DrMOS or discrete driver stages; supports staggered turn-on for EMI reduction. |
| SMBCLK/SMBDAT | PMBus interface | Two-wire serial interface for configuration, telemetry, and fault reporting; supports hot-plug capable SMBus timing. |
| AVP_SLOPE | Adaptive voltage positioning control | Analog input setting AVP droop slope (mV/A); enables dynamic voltage scaling under load for thermal/power optimization. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP3™ hybrid control | Combines analog feed-forward speed with digital loop stability - eliminates need for external compensation components. |
| Per-phase current monitoring | Integrated current-sense amplifiers per phase enable precise load balancing and phase shedding below 10% load. |
| VR ready signaling | Dedicated VR_READY pin asserts when output is within ±1% of target and all faults are cleared - synchronizes CPU boot sequence. |
| Telemetry logging | Non-volatile fault log stores last 8 events (OV, UV, OC, OT) with timestamps and register snapshots for post-failure analysis. |
Applications
| Server CPU VRM | Data Center GPU Power |
|---|---|
Use Scenario: Dual-socket x86 server motherboard delivering 200+ A to multi-core CPUs under dynamic workloads. IC Role / Device Role / Timing Role: Primary multiphase VR controller managing phase allocation, AVP, and SVID handshake with CPU. Use Value: Enables <1.5% total output error across line/load/temperature while supporting Intel VR14.0 specifications including fast VID transitions. | Use Scenario: AI accelerator card powering high-TDP GPUs (e.g., NVIDIA A100) with tight voltage tolerance and fast transient response. IC Role / Device Role / Timing Role: Digital VR controller coordinating up to 7 phases and interfacing with GPU's PMBus telemetry engine. Use Value: Achieves <100 ns transient recovery and real-time per-rail current reporting - essential for GPU thermal throttling and power capping. |
| Enterprise Storage Controller | High-Performance Networking ASIC |
Use Scenario: NVMe SSD controller board requiring stable 1.2 V core supply with minimal noise and high PSRR. IC Role / Device Role / Timing Role: Multiphase buck controller with integrated filtering and low-noise PWM generation for sensitive storage logic. Use Value: Delivers <10 mVpp output ripple and >60 dB PSRR at 1 MHz - prevents data corruption in high-speed NAND interfaces. | Use Scenario: 400G Ethernet switch ASIC board needing tightly regulated 0.8 V core rail with dynamic voltage scaling. IC Role / Device Role / Timing Role: Programmable VR controller implementing AVP and dynamic VID updates via BMC over PMBus. Use Value: Supports per-port power gating and frequency scaling by adjusting voltage in real time - reducing idle power by up to 35%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase VR controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IR35223MTRPBF | 6-phase max, no AVP_SLOPE pin, SVID-only interface (no PMBus) | Limited to single-CPU VRMs without telemetry or remote management needs | Select when cost-sensitive, lower-current designs omit PMBus telemetry and AVP flexibility. |
| MP2960AQR-LF-P | 6-phase, analog-based D-CAP+ control, no integrated ADC telemetry | Requires external current sensing and lacks non-volatile fault logging | Choose for simpler, lower-BOM-cost VRMs where digital diagnostics are not required. |
Compared with IR35223MTRPBF and MP2960AQR-LF-P, the IR3537MTRPBF uniquely combines 7-phase scalability, AVP slope programming, and full PMBus telemetry - making it the only option among the three qualified for dual-socket VR14.0 server platforms with BMC-integrated power management.
Availability
IR3537MTRPBF is available at Aetrix Electronics and suitable for server motherboard design, AI accelerator power delivery, and enterprise storage controller development requiring stable component supply and long-term lifecycle support.
Supply support for IR3537MTRPBF 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 IR3537MTRPBF belongs to Infineon's digital multiphase controller product line, engineered specifically for next-generation server and data center VRMs demanding precision, telemetry, and compliance with Intel VR14.0/AMD SVI2 specifications.
FAQ
What is the maximum number of phases the IR3537MTRPBF can control?
The IR3537MTRPBF supports up to 7 synchronous buck phases via its PHASE[0..6] outputs. Each phase output drives an external DrMOS or discrete driver stage, and the controller performs automatic phase shedding and interleaving to optimize efficiency across load ranges from light-load standby to full-rated current.
Does the IR3537MTRPBF require external compensation components?
No - the IR3537MTRPBF implements D-CAP3™ hybrid control, which embeds feed-forward response and digitally adjustable PID parameters. All loop compensation is configured via PMBus commands; no external RC networks or compensation pins are needed, simplifying layout and improving consistency across production units.
Can the IR3537MTRPBF operate without a PMBus host controller?
Yes - it supports autonomous operation using factory-programmed default settings stored in internal OTP memory. SVID mode allows direct CPU communication for basic VID updates, while PMBus remains optional for advanced telemetry, configuration, and fault logging.
What thermal management features does the IR3537MTRPBF include?
The device integrates a die-temperature sensor with 1°C resolution and supports thermal foldback via PMBus. It also monitors per-phase current and output voltage to trigger thermal derating before reaching safe operating limits, and its QFN-48 package includes an exposed thermal pad rated for ≤3.5°C/W junction-to-board thermal resistance.
IR3537MTRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- -
- Channel Type:
- -
- Number of Drivers:
- -
- Gate Type:
- -
- Voltage - Supply:
- -
- Logic Voltage - VIL, VIH:
- -
- Current - Peak Output (Source, Sink):
- -
- Input Type:
- -
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
IR3537MTRPBF FAQ
1.How can I place an order for IR3537MTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IR3537MTRPBF 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 IR3537MTRPBF reliable?
The price and inventory of IR3537MTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR3537MTRPBF is usually 5 days.
3.What payment methods are accepted for IR3537MTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR3537MTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IR3537MTRPBF?
IR3537MTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IR3537MTRPBF 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 IR3537MTRPBF?
For technical support, including IR3537MTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR3537MTRPBF requirements.
6.How does Aetrix verify that IR3537MTRPBF is sourced from the original manufacturer or authorized distributors?
All IR3537MTRPBF 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 IR3537MTRPBF meets industry standards.
7.What is the process for return or replacement of IR3537MTRPBF?
All IR3537MTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IR3537MTRPBF, 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 IR3537MTRPBF part is unused and in its original packaging.
Return procedure for IR3537MTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IR3537MTRPBF Tags
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