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Infineon Technologies IR3826MTRPBFAUMA1
- Part No.:
- IR3826MTRPBFAUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 22-PowerVQFN
- Datasheet:
-
IR3826MTRPBFAUMA1.pdf
- Description:
- IC REG BUCK ADJ 23A 22IQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,597
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Product details
Overview
IR3826MTRPBFAUMA1 from Infineon is a fully integrated synchronous buck regulator with integrated OptiMOS™ power FETs, delivering up to 23 A continuous output current. It operates from 1.0 V to 17 V input (with external Vcc) or 5 V–17 V (single supply), features 0.6 V ±0.6% reference voltage, programmable 300–1500 kHz switching frequency, and monotonic soft-start for stable PoL deployment in server VRMs.
For engineers reviewing the IR3826MTRPBFAUMA1 datasheet, IR3826MTRPBFAUMA1 pinout, IR3826MTRPBFAUMA1 application, or IR3826MTRPBFAUMA1 equivalent, this device supports precision point-of-load regulation with thermally compensated over-current protection, pre-bias start-up, and programmable power-good signaling in high-density industrial and datacom power systems.
Technical Context
The IR3826 implements a voltage-mode PWM controller with feed-forward line regulation and internal 0.6 V reference, enabling output voltages from 0.6 V to 0.86×Vin. Its dual-ground architecture separates PGnd (power stage return) from Gnd (signal reference), minimizing noise coupling in high-dI/dt switching paths.
Over-current protection uses Vsns-based valley-current sensing with three ILIM configurations (floating, tied to Vcc, or tied to PGnd), while thermal shutdown activates at Tj ≥ 150 °C and includes junction-to-PCB thermal resistance of 3.5 °C/W for layout-aware thermal design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 23 A continuous; supports high-current single-rail PoL without external MOSFETs or gate drivers. |
| Input Voltage Range | 1.0 V–17 V (with external Vcc) or 5 V–17 V (single supply); enables flexible biasing in multi-rail systems. |
| Reference Voltage | 0.6 V ±0.6%; ensures ±3.6 mV absolute accuracy for sub-1 V CPU/GPU core rails. |
| Switching Frequency | 300 kHz–1.5 MHz; set via external Rt resistor; allows optimization of size vs. efficiency in space-constrained boards. |
| Operating Junction Temp | −40 °C to +125 °C; qualified for industrial applications per JEDEC JESD22-A108. |
| Package Thermal Resistance | θJ-PCB = 3.5 °C/W; enables direct PCB copper thermal path design for sustained 23 A operation. |
| Protection Features | Pre-bias start-up, thermally compensated OCP, OV protection (Vsns-triggered), thermal shutdown, UVLO on Enable/Vin. |
Pinout & Package
IR3826MTRPBFAUMA1 is housed in a thermally enhanced 6 mm × 5 mm PQFN package with exposed thermal pad (PGnd-connected) and 17-pin layout optimized for low-inductance power delivery.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Fb (Pin 1) | Inverting error amplifier input | Direct connection to output voltage divider; sets regulated output with 0.6 V reference. |
| Comp (Pin 3) | Error amplifier output | Interface for external RC compensation network to stabilize voltage loop. |
| Rt (Pin 5) | Frequency programming node | Resistor-to-Gnd sets free-running switching frequency from 300 kHz to 1.5 MHz. |
| ILIM (Pin 6) | OCP trip point selector | Three states: floating (23 A), tied to Vcc (18 A), tied to PGnd (13 A). |
| PGood (Pin 7) | Open-drain power-good indicator | Signals valid output after soft-start and OVP/UVLO checks; requires external pull-up. |
| Vsns (Pin 8) | OVP and PGood sense input | Monitors output rail for over-voltage and enables accurate PGood assertion timing. |
| Vin (Pin 9) | LDO input bias | Supplies internal LDO when external Vcc not used; decoupled with 1.0 µF to PGnd. |
| Vcc/LDO_Out (Pin 10) | Internal LDO output / external bias input | Provides 5 V bias for control circuitry; accepts external 5 V supply to bypass LDO. |
| PGnd (Pin 11) | Power ground return | Dedicated low-impedance return for high-side and low-side FET sources; must connect to power plane. |
| SW (Pin 12) | Switch node | Connects to output inductor; carries full switching waveform; critical for layout EMI control. |
| PVin (Pin 13) | Main power input | High-current input to power stage; routed with wide copper pour to minimize IR drop. |
| Boot (Pin 14) | High-side gate driver supply | Charged via 100 nF bootstrap capacitor between Boot and SW; enables N-channel high-side FET drive. |
| Enable (Pin 15) | UVLO-enabled ON/OFF control | Resistor-divider from PVin enables input under-voltage lockout; active-high logic. |
| Gnd (Pins 4 & 17) | Signal ground reference | Return for error amp, reference, and logic; isolated from PGnd to prevent noise injection. |
| NC (Pins 2 & 16) | No-connect | Not internally bonded; must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated OptiMOS™ FETs | Eliminates external MOSFETs and gate drivers; reduces BOM count and layout area by >40% vs discrete solutions. |
| Thermally compensated OCP | Adjusts current limit threshold with junction temperature to maintain consistent fault margin across −40 °C to +125 °C. |
| Monotonic soft-start | Internal digital soft-start prevents output voltage undershoot/overshoot during startup into pre-biased loads. |
| Feed-forward line regulation | Improves transient response to input voltage changes without requiring additional compensation components. |
| Separate PGnd/Gnd planes | Reduces switching noise coupling into control circuitry, enabling stable operation at 1.5 MHz with <10 mV ripple. |
Applications
| Server VRM Core Rail | Storage Controller Power |
|---|---|
Use Scenario: Regulating 0.8 V @ 20 A for x86 CPU cores in 1U rack servers with tight thermal constraints. IC Role / Device Role / Timing Role: Primary point-of-load regulator with integrated FETs, providing fast load-step response and precise voltage tracking. Use Value: Delivers 92% peak efficiency at 12 V input/0.8 V output, reducing board-level heat density and eliminating external driver layout complexity. | Use Scenario: Powering NVMe SSD controllers requiring clean, low-noise 1.8 V supply with fast transient recovery. IC Role / Device Role / Timing Role: Single-chip buck converter with pre-bias start-up and monotonic ramp, ensuring reliable boot under partial system power-up. Use Value: Enables seamless integration into compact M.2 modules with no external MOSFETs or compensation parts required. |
| Telecom Baseband ASIC | Datacom Switch PHY Supply |
Use Scenario: Generating 1.0 V @ 15 A for FPGA-based baseband processing units in 5G radio units. IC Role / Device Role / Timing Role: High-efficiency PoL regulator with programmable 1 MHz switching and thermal-aware OCP for outdoor-rated enclosures. Use Value: Maintains regulation stability across −40 °C to +85 °C ambient with junction temp monitoring via θJ-PCB design guidance. | Use Scenario: Supplying 1.2 V @ 18 A to 100G Ethernet PHYs in modular line cards with strict EMI limits. IC Role / Device Role / Timing Role: Synchronous buck with feed-forward line regulation and separate PGnd/Gnd to suppress switching noise in sensitive analog receive paths. Use Value: Achieves <15 mVpp output ripple at full load, meeting IEEE 802.3bj jitter compliance requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP8765GQ-Z (Monolithic Power) | 20 A rated, 2.5 V–18 V input, fixed 0.6 V reference, no ILIM selectability | Lacks three-level OCP and pre-bias start-up; less robust in hot-swap or battery-backed systems | Preferred for cost-sensitive, lower-current (<18 A) telecom applications where thermal OCP is not required |
| TPS546B24RVFT (TI) | 25 A rated, 3.0 V–18 V input, PMBus interface, 0.5 V reference, digital loop compensation | Requires external EEPROM and firmware configuration; adds design overhead for non-PMBus systems | Selected when telemetry, dynamic voltage scaling, or multi-phase synchronization is needed |
Compared with MP8765GQ-Z and TPS546B24RVFT, IR3826MTRPBFAUMA1 offers optimal balance of analog simplicity, thermal-aware protection, and plug-and-play PoL deployment-ideal for industrial and datacom designs where reliability and layout efficiency outweigh digital configurability.
Availability
IR3826MTRPBFAUMA1 is available at Aetrix Electronics and suitable for server VRMs, storage controller power, telecom baseband ASICs, and datacom switch PHY supplies requiring stable component supply, long-lifecycle support, and validated thermal performance.
Supply support for IR3826MTRPBFAUMA1 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 silicon and silicon carbide power devices.
The IR3826 belongs to Infineon's OptiMOS™ IPOL (Integrated POL) product line, designed specifically for high-current, low-voltage point-of-load regulation in space-constrained, thermally demanding infrastructure equipment.
FAQ
What input voltage configurations does IR3826MTRPBFAUMA1 support?
IR3826MTRPBFAUMA1 supports two input configurations: single-supply operation from 5 V to 17 V applied to PVin, or wide-input operation from 1.0 V to 17 V using an external 5 V bias on Vcc/LDO_Out. Vin pin must be shorted to Vcc/LDO_Out in the latter case. The internal LDO regulates control circuitry from either source.
How is over-current protection configured on IR3826MTRPBFAUMA1?
Over-current protection is set via ILIM pin (Pin 6): floating configures 23 A limit, tying to Vcc selects 18 A, and tying to PGnd selects 13 A. The trip point is thermally compensated across −40 °C to +125 °C junction temperature, ensuring consistent fault margin without external calibration.
Does IR3826MTRPBFAUMA1 require external compensation components?
Yes - external RC compensation is required between Comp (Pin 3) and Fb (Pin 1) to stabilize the voltage control loop. The datasheet provides design equations and example values based on output capacitance, inductance, and target crossover frequency. No internal compensation is provided.
Can IR3826MTRPBFAUMA1 start into a pre-biased output?
Yes - IR3826MTRPBFAUMA1 features enhanced pre-bias start-up that safely ramps the output from an existing DC voltage without reverse current flow or output collapse. This is enabled by internal current limiting and controlled gate drive sequencing, confirmed in Section 12.5 of the datasheet.
IR3826MTRPBFAUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- SupIRBuck®
- Package/Case:
- 22-PowerVQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 14.62V
- Current - Output:
- 23A
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-IQFN-22
IR3826MTRPBFAUMA1 FAQ
1.How can I place an order for IR3826MTRPBFAUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for IR3826MTRPBFAUMA1 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 IR3826MTRPBFAUMA1 reliable?
The price and inventory of IR3826MTRPBFAUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR3826MTRPBFAUMA1 is usually 5 days.
3.What payment methods are accepted for IR3826MTRPBFAUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR3826MTRPBFAUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IR3826MTRPBFAUMA1?
IR3826MTRPBFAUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IR3826MTRPBFAUMA1 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 IR3826MTRPBFAUMA1?
For technical support, including IR3826MTRPBFAUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR3826MTRPBFAUMA1 requirements.
6.How does Aetrix verify that IR3826MTRPBFAUMA1 is sourced from the original manufacturer or authorized distributors?
All IR3826MTRPBFAUMA1 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 IR3826MTRPBFAUMA1 meets industry standards.
7.What is the process for return or replacement of IR3826MTRPBFAUMA1?
All IR3826MTRPBFAUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with IR3826MTRPBFAUMA1, 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 IR3826MTRPBFAUMA1 part is unused and in its original packaging.
Return procedure for IR3826MTRPBFAUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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