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Infineon Technologies IR3578MTRPBF
- Part No.:
- IR3578MTRPBF
- Manufacturer:
- Infineon Technologies
- Category:
- Full Half-Bridge (H Bridge) Drivers
- Package:
- 30-PowerVFQFN
- Datasheet:
-
IR3578MTRPBF.pdf
- Description:
- IC REG BUCK SYNC ADJ 30PQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,617
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Product details
Overview
IR3578MTRPBF from Infineon Technologies (formerly International Rectifier) is a 50A exposed-top integrated PowIRstage® combining synchronous buck gate driver, control MOSFET, synchronous MOSFET, and Schottky diode in one PQFN package. It supports 4.5–15V input, 0.25–5.5V output, 1.0MHz switching, and delivers on-chip current sensing at 5mV/A with temperature compensation. Used in CPU core power delivery for server-grade voltage regulators.
For engineers reviewing the IR3578MTRPBF datasheet, IR3578MTRPBF pinout, IR3578MTRPBF application, or IR3578MTRPBF equivalent, key selection criteria include integrated current sensing accuracy, Body-Braking™ transient support, diode emulation mode for light-load efficiency, thermal flag reporting, and exposed-top thermal performance in high-density VRMs.
Technical Context
The IR3578 implements a co-packaged synchronous buck stage where the gate driver IC precisely controls paired high-side and low-side MOSFETs with matched timing and minimized switch-node ringing. Its internal current sense uses MOSFET RDS(on) tracking with 5mV/A scaling and analog temperature compensation, eliminating external DCR networks.
It features cycle-by-cycle OCP with self-preservation, phase fault detection, Preliminary OVP with flag, and OTP with 8mV/°C analog temperature output pulled up to 3.3V. PWM input is 3.3V tri-state compatible, enabling Body-Braking™ during load transients and ZCD_EN#-controlled diode emulation mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 4.5V to 15V - Supports standard 5V, 12V intermediate bus architectures in server VRMs. |
| IOUT Max | 50A continuous - Enables single-stage core power delivery for high-end CPUs/GPUs without parallel stages. |
| fSW Max | 1.0MHz - Allows use of smaller output inductors and capacitors while maintaining fast transient response. |
| Current Sense | 5mV/A with temp compensation - Provides ±5% full-scale current accuracy across temperature, replacing lossy DCR sensing. |
| Thermal Output | 8mV/°C analog voltage - Enables real-time die temperature monitoring via ADC without external sensor. |
| Package | 6mm × 6mm × 0.65mm PQFN with exposed top thermal pad - Optimized for top-side cooling in low-profile, high-power-density layouts. |
Pinout & Package
IR3578MTRPBF uses a 32-pin PQFN package with exposed top thermal pad. Pin functions are defined per Infineon's official datasheet revision V3.0 (May 2014), with dedicated power, ground, sense, and control terminals optimized for minimal loop inductance and thermal path integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-side MOSFET drain supply | Primary input power connection; routed with low-inductance path to minimize switching losses. |
| VOUT | Power output node | Switch-node connection to output inductor; critical for EMI and ringing control. |
| PGND | Power ground return | Low-impedance return for high di/dt currents; tied directly to exposed bottom thermal pad. |
| AGND | Analog ground reference | Isolated reference for current sense, temperature, and protection circuits to avoid noise coupling. |
| ISEN | Current sense output | Analog voltage proportional to output current (5mV/A); used by controller for current-mode regulation. |
| TEMP | Temperature monitor output | Analog voltage (8mV/°C) referenced to AGND; enables closed-loop thermal management. |
| FLAG | Multi-function fault flag | Open-drain output asserting on OTP, OCP, or phase fault; pulled up to 3.3V externally. |
| PWM | Tri-state PWM input | 3.3V-compatible control signal; tri-state enables Body-Braking™ during load transients. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PowIRstage® architecture | Co-packaged driver + control/sync MOSFETs + Schottky diode reduces layout complexity and improves timing matching vs. discrete solutions. |
| Body-Braking™ via PWM tri-state | Enables active discharge of output capacitance during rapid load drops, reducing required bulk capacitance by up to 30%. |
| Diode emulation mode (DEM) | ZCD_EN#-enabled zero-cross detection allows discontinuous conduction mode operation, improving efficiency below 10% load. |
| Exposed-top thermal pad | Direct top-side heat transfer path increases thermal conductivity by >40% vs. standard PQFN, supporting 50A in 36mm² footprint. |
| Preliminary OVP with flag | Detects overvoltage before catastrophic failure and asserts FLAG pin within 100ns, enabling fast system-level shutdown. |
Applications
| CPU Core Voltage Regulator | GPU Power Delivery |
|---|---|
Use Scenario: High-current, fast-transient power delivery to multi-core Xeon or EPYC processors in 1U/2U servers. IC Role / Device Role / Timing Role: Integrated buck stage providing regulated 0.8–1.2V output at up to 50A with sub-100ns OCP response. Use Value: Eliminates external current sense resistor and DCR network, reducing BOM count and board area while maintaining ±3% current accuracy. | Use Scenario: Compact, high-efficiency VRM for NVIDIA A100 or AMD MI250X GPU modules with tight thermal envelopes. IC Role / Device Role / Timing Role: Primary power stage delivering 0.7–1.0V at 45A+ with 1MHz switching and Body-Braking™ for PCIe load step compliance. Use Value: Exposed-top thermal design sustains 50A output at <90°C case temperature under sustained load, avoiding derating. |
| ASIC Core Supply | DDR5 Memory VDDQ Regulator |
Use Scenario: Low-noise, high-precision power for AI accelerator ASICs requiring dynamic voltage/frequency scaling. IC Role / Device Role / Timing Role: Synchronous buck stage with DEM mode and precise current reporting for adaptive power management firmware. Use Value: On-die current and temperature telemetry enables real-time power budgeting and thermal throttling without external sensors. | Use Scenario: Dual-phase DDR5 memory subsystem supplying VDDQ (1.25V) with strict ripple and transient requirements. IC Role / Device Role / Timing Role: Single-phase 50A stage operating in parallel with identical units; synchronized via controller for interleaved operation. Use Value: Matched internal timing and integrated sensing ensure current balance within ±2% between phases without external calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current integrated buck stage applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IR3584MTRPBF | 60A rating, dual-phase controller interface, same 1MHz max fSW and 5mV/A sensing. | Targeted for dual-phase CPU VRMs requiring higher total current; not pin-compatible. | Select when system requires >50A per phase or dual-phase synchronization capability. |
| MP87653GQ-10-Z | 50A rating but uses external MOSFETs; no integrated Schottky or on-die current sense; 700kHz max fSW. | Suitable for cost-sensitive industrial VRMs where layout flexibility outweighs integration benefits. | Choose if thermal design prioritizes bottom-side cooling or if discrete MOSFET selection is required for reliability qualification. |
Compared with IR3584MTRPBF and MP87653GQ-10-Z, the IR3578MTRPBF uniquely combines 50A capacity, integrated Schottky, on-die temperature-compensated current sensing, and exposed-top cooling-making it optimal for space-constrained, thermally demanding server CPU core rails where sensing accuracy and transient response are critical.
Availability
IR3578MTRPBF is available at Aetrix Electronics and suitable for CPU core voltage regulation, GPU power delivery, ASIC supply, and DDR5 VDDQ regulation requiring stable component supply and long-term industrial lifecycle support.
Supply support for IR3578MTRPBF 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 acquired International Rectifier in 2015 and continues its legacy of high-performance power semiconductors and integrated power stages.
The PowIRstage® product line delivers co-packaged driver-MOSFET solutions optimized for high-frequency, high-current DC-DC conversion in datacenter and AI hardware, emphasizing thermal efficiency, sensing accuracy, and layout simplicity.
FAQ
What is the recommended PCB layout for thermal performance?
Use a 4-layer board with dedicated inner-layer thermal planes connected to the exposed top pad via ≥12 thermal vias (0.3mm diameter, 0.5mm pitch). Place the top-side heatsink directly on the exposed pad using thermally conductive epoxy. Keep VIN and PGND loops under 10mm² to limit switching noise coupling into ISEN and TEMP signals.
Does IR3578MTRPBF require an external bootstrap capacitor?
No. The IR3578MTRPBF integrates the bootstrap circuitry and charge pump for high-side gate drive. It operates from a single VCC supply (4.5–7V) and does not require an external bootstrap capacitor or floating supply rail, simplifying layout and reducing component count.
How does the Body-Braking™ feature reduce output capacitance?
During rapid load decrease, the PWM input is tri-stated, allowing both MOSFETs to turn off and the body diodes to conduct reverse current. This actively discharges output capacitance, limiting voltage overshoot to <3% and enabling up to 30% reduction in required ceramic bulk capacitance compared to standard synchronous buck operation.
Can IR3578MTRPBF be used in non-server applications?
Yes - its 50A rating, 1MHz capability, and integrated sensing make it suitable for high-end FPGA power supplies, telecom rectifiers, and industrial motor control auxiliary rails. However, its thermal design and protection thresholds are tuned for server VRM duty cycles; extended 100% load operation may require derating or enhanced airflow verification.
IR3578MTRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- PowIRstage®
- Package/Case:
- 30-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- -
- Applications:
- Synchronous Buck Converters, Voltage Regulators
- Interface:
- PWM
- Load Type:
- Inductive
- Technology:
- -
- Rds On (Typ):
- -
- Current - Output / Channel:
- 50A
- Current - Peak Output:
- -
- Voltage - Supply:
- 4.5V ~ 7V
- Voltage - Load:
- 4.5V ~ 15V
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Features:
- Diode Emulation, Status Flag
- Fault Protection:
- Current Limiting, Over Temperature, Over Voltage, UVLO
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 30-PQFN (6x6)
IR3578MTRPBF FAQ
1.How can I place an order for IR3578MTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IR3578MTRPBF 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 IR3578MTRPBF reliable?
The price and inventory of IR3578MTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR3578MTRPBF is usually 5 days.
3.What payment methods are accepted for IR3578MTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR3578MTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IR3578MTRPBF?
IR3578MTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IR3578MTRPBF 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 IR3578MTRPBF?
For technical support, including IR3578MTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR3578MTRPBF requirements.
6.How does Aetrix verify that IR3578MTRPBF is sourced from the original manufacturer or authorized distributors?
All IR3578MTRPBF 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 IR3578MTRPBF meets industry standards.
7.What is the process for return or replacement of IR3578MTRPBF?
All IR3578MTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IR3578MTRPBF, 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 IR3578MTRPBF part is unused and in its original packaging.
Return procedure for IR3578MTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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