TPS544C26RXXR Texas Instruments Integrated Circuit (Quad Flat No-Lead Packages) In Stock
The TPS544C26RXXR is a 4 V to 16 V input, 35 A synchronous step-down converter from Texas Instruments supporting SVID and I2C interfaces for dynamic voltage scaling. Its voltage-mode PWM control and 37-pin QFN package deliver high-current point-of-load regulation for server CPUs, ASICs, and FPGAs from a 12 V bus.
- Manufacturer
- Texas Instruments
- Package
- Quad Flat No-Lead Packages
- Pin Count
- 36
- Lifecycle
- ACTIVE
- Datasheet
- TPS544C26RXXR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.0466(MOQ 250)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 35 A peak output current with 4 V–16 V input range and nominal 12 V bus operation for high-power POL supplies
- SVID (Serial VID) and I2C interfaces enable dynamic voltage scaling for Intel and AMD processor core rails
- Voltage-mode PWM control with integrated high-side and low-side MOSFETs for high-efficiency synchronous buck conversion
- 37-pin QFN (R-PQCC-N37) package with RoHS e4 halogen-reduced finish for compact server and telecom board designs
Applications
The TPS544C26RXXR is designed as a point-of-load power stage for server motherboards, blade servers, and high-performance computing platforms where processor or ASIC core voltages must be dynamically adjusted via SVID at currents up to 35 A from a 12 V rail. Its I2C telemetry interface also makes it suitable for FPGA core supply regulators and network switching ASICs in data-center line cards requiring real-time current and temperature monitoring.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 16V |
| Input Voltage-Min | 4V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PQCC-N37 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 35A |
| Output Voltage-Max | 3.04V |
| Output Voltage-Min | 0.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC37(UNSPEC) |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 1200kHz |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | NO LEAD |
| Terminal Position | QUAD |
| Package | Quad Flat No-Lead Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Philippines |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What peak output current and input voltage range does the TPS544C26RXXR support for server CPU core power delivery?
The TPS544C26RXXR delivers up to 35 A output current from a 4 V to 16 V input, with 12 V as the nominal bus voltage. This 35 A capability covers the full power budget of a mid-range server CPU core rail, and the 4 V lower input limit allows the regulator to operate from redundant 5 V backup rails during power sequencing events.
How does the SVID interface on the TPS544C26RXXR support dynamic voltage scaling in Intel processor platforms?
SVID (Serial VID) is Intel's serial bus for requesting voltage changes on CPU core and uncore rails. The TPS544C26RXXR implements the SVID protocol, allowing the CPU to slew its supply voltage from as low as 0.5 V up to approximately 1.52 V in response to workload changes, enabling power savings of up to 30–40% in lightly loaded server states without external microcontroller intervention.
When should a designer use the TPS544C26RXXR's I2C interface instead of or alongside SVID for a data-center ASIC rail?
For ASICs that do not implement the SVID protocol—such as network switch ICs or custom FPGAs—the I2C interface allows a BMC or system microcontroller to read output voltage, current, and temperature telemetry and write voltage set-points over the standard 400 kHz or 1 MHz I2C bus. Running both SVID and I2C simultaneously is also possible: SVID for fast CPU voltage slewing and I2C for background monitoring at slower intervals, enabling a complete power management solution in a single 37-pin QFN.
What package does the TPS544C26RXXR use, and how does its thermal design accommodate 35 A continuous current?
The TPS544C26RXXR is housed in a 37-pin QFN (JESD-30 R-PQCC-N37) with an exposed thermal pad on the underside. At 35 A output and 90% efficiency from a 12 V input, the converter dissipates approximately 4.2 W, which the thermal pad conducts to the PCB ground plane through solder vias. A 4-layer board with 2 oz copper planes typically keeps junction temperature below 125°C at 25°C ambient without a heatsink.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 250+ | $4.2758 | $1068.94 |
| 500+ | $4.1501 | $2075.03 |
| 1000+ | $4.0466 | $4046.62 |
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