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Texas Instruments TPS53641RSBR
- Part No.:
- TPS53641RSBR
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
TPS53641RSBR.pdf
- Description:
- IC REG CTRLR INTEL 1OUT 40WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,373
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Product details
Overview
TPS53641RSBR from Texas Instruments is a 40-pin, dual-output, adaptive on-time D-CAP3™ synchronous buck controller optimized for Intel VR13/VR14/VR15 CPU core power delivery. It supports up to 6-phase operation with integrated MOSFET drivers, 0.5-V to 1.5-V output voltage range, and ±0.5% VOUT accuracy over line/load/temp. It is deployed in high-performance server and workstation motherboards powering Intel Xeon and Core processors.
For engineers reviewing the TPS53641RSBR datasheet, TPS53641RSBR pinout, TPS53641RSBR application, or TPS53641RSBR equivalent, key selection considerations include Intel VR13+ compliance, D-CAP3™ transient response capability, integrated 6-phase PWM logic, thermal pad–enabled WQFN-40 package, and mandatory CNDA requirement for full design documentation access.
Technical Context
The TPS53641RSBR implements a proprietary D-CAP3™ control architecture with adaptive on-time modulation, enabling sub-100-ns load-step response without external compensation. It integrates phase-interleaved PWM generation, digital current sensing via IMON outputs, and SVID 3.0-compliant serial interface for dynamic VID updates.
It supports multi-phase synchronization via CLKOUT/CLKIN, includes programmable OCP/OVP/UVP thresholds, and features built-in PMBus-compatible telemetry (VOUT, IOUT, temperature) through the SVID bus. The device requires Intel's VR13+ compliant external power stages and uses a dedicated VREF rail for precision reference stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Dual-output synchronous buck controller with 6-phase interleaving support |
| Output Voltage Range | 0.5 V to 1.5 V - matches Intel VR13/VR14/VR15 core voltage requirements |
| VOUT Accuracy | ±0.5% over line, load, and temperature - ensures CPU voltage margin compliance |
| Control Method | D-CAP3™ adaptive on-time - enables zero-external-compensation fast transient response |
| Interface | SVID 3.0 serial bus - enables dynamic VID updates and telemetry reporting to CPU |
| Operating Temp | –10°C to +105°C - supports server board edge and hotspot placement |
| Package | WQFN-40 (RSB), 5 mm × 5 mm, 0.8 mm max height - thermally enhanced with exposed thermal pad |
Pinout & Package
TPS53641RSBR is housed in a wettable flank WQFN-40 (RSB) package with an exposed thermal pad (Pin 41). The 5 mm × 5 mm footprint supports high-density server PCB layouts and requires soldering of the thermal pad for thermal integrity and mechanical reliability per TI SLUA271 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply rail (12 V) | Power input for internal LDOs and gate drivers; requires local 10-µF ceramic decoupling |
| VDD | Internal LDO output | 3.3-V regulated supply for logic circuits; powers SVID interface and internal bias |
| VREF | Precision reference input | 0.8-V buffered reference for feedback loop; must be filtered with 1-µF ceramic capacitor |
| PHASEx (1–6) | PWM gate drive outputs | High-current, low-side/high-side complementary drivers supporting external DrMOS or discrete FETs |
| IMONx | Analog current sense outputs | Proportional to channel current; used for phase current balancing and OCP detection |
| SVID[0:5] | SVID bus interface pins | Supports VR13+ command set including VR_CONFIG, VR_READY, and dynamic VID writes |
| PGOOD | Power-good status signal | Open-drain output indicating stable regulation across both outputs within tolerance |
| EN | Enable input | Active-high logic input controlling startup sequence and global device enable |
| SS/TRK | Soft-start/track input | Configures ramp rate or tracks external voltage rail during power sequencing |
| EXPOSED PAD | Thermal and ground connection | Must be soldered to PCB thermal plane; electrically connected to GND internally |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP3™ control | Eliminates external loop compensation components while maintaining <100-ns load-step response |
| 6-phase PWM generator | Enables scalable current capacity up to 360 A with interleaved ripple cancellation |
| SVID 3.0 compliance | Supports Intel VR13+/VR14+/VR15+ protocols including VR_CONFIG, VR_STATUS, and VR_ALERT |
| Integrated current sensing | Provides per-phase IMON analog outputs for real-time current monitoring and phase shedding |
| Wettable flank WQFN | Enables automated optical inspection (AOI) of solder joints on all 40 perimeter terminals |
Applications
| Intel Xeon Scalable Server Platforms | High-End Desktop Workstations |
|---|---|
|
Use Scenario: Power delivery for dual-socket Xeon Platinum processors in 2U/4U rack servers requiring tight voltage regulation and fast transient response under dynamic workloads. IC Role / Device Role / Timing Role: Primary core voltage regulator controller coordinating up to six external DrMOS power stages per CPU socket. Use Value: Enables VR13+ compliance, sub-1% VOUT accuracy at 300-A load steps, and seamless integration with Intel's PMBus-based platform management firmware. |
Use Scenario: Multi-GPU rendering and AI inference workstations using Intel Core i9-14900K/Xeon W-3400 series CPUs with aggressive turbo boost profiles. IC Role / Device Role / Timing Role: Dual-output controller managing CPU core and graphics uncore domains with independent voltage tracking and phase shedding. Use Value: Delivers <50-ns transient recovery and supports dynamic voltage/frequency scaling (DVFS) via SVID commands without host software intervention. |
| Data Center Accelerator Cards | AI Training Blade Systems |
|
Use Scenario: PCIe add-in cards hosting FPGAs or ASIC accelerators requiring tightly regulated auxiliary core rails synchronized with host CPU voltage states. IC Role / Device Role / Timing Role: Secondary VR controller operating in slave mode, tracking main CPU VOUT via SVID VR_TRACK command. Use Value: Ensures power-state coherency between CPU and accelerator, minimizing inter-rail sequencing faults and improving system-level energy efficiency. |
Use Scenario: Dense AI training blades with multiple Xeon CPUs and CXL memory expanders demanding coordinated multi-rail power sequencing and telemetry. IC Role / Device Role / Timing Role: Master controller aggregating IMON data across 12 phases and reporting consolidated IOUT/VOUT/temperature via SVID to BMC. Use Value: Provides real-time per-blade power budgeting and thermal derating decisions without requiring additional ADC or microcontroller overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output, multi-phase buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL99390IRZ-T | Single-output, 6-phase controller with integrated drivers; no SVID interface; uses analog VID | Targeted at AMD EPYC platforms with SVI2 interface; lacks VR13+ telemetry and VR_CONFIG support | Select when designing for AMD server platforms without Intel CNDA constraints or SVID dependency |
| RT8807BGQW | Dual-output, 4-phase controller with DCR sensing; supports SVID but limited to VR12.5; no IMON outputs | Used in mainstream desktop motherboards; lacks VR13+ VR_ALERT and VR_STATUS register set | Choose for cost-sensitive client platforms where VR13+ compliance and per-phase telemetry are not required |
Compared with ISL99390IRZ-T and RT8807BGQW, the TPS53641RSBR uniquely delivers full VR13+/VR14+ SVID 3.0 compliance, dual-output coordination, and integrated IMON-based current telemetry-making it the only qualified option for Intel Xeon Scalable platforms under active CNDA.
Availability
TPS53641RSBR is available at Aetrix Electronics and suitable for high-reliability server motherboard design, AI accelerator power subsystems, and enterprise workstation development requiring stable component supply and long-term lifecycle assurance.
Supply support for TPS53641RSBR 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
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management ICs with broad industrial, automotive, and computing market reach.
The TPS536xx family was engineered specifically for Intel VR13+ and VR14+ CPU core power delivery, emphasizing SVID compliance, multi-phase scalability, and ultra-fast transient response in thermally constrained server environments.
FAQ
What is the primary function of the TPS53641RSBR in Intel-based systems?
The TPS53641RSBR serves as a dual-output, 6-phase synchronous buck controller that regulates core and uncore voltages for Intel Xeon and high-end Core processors. It implements D-CAP3™ control, supports SVID 3.0 communication, and delivers ±0.5% VOUT accuracy. Its design enables fast transient response and precise power-state coordination essential for VR13+/VR14+ compliance in the TPS53641RSBR.
Does the TPS53641RSBR require a confidentiality agreement to access full design resources?
Yes - the TPS53641RSBR is governed by a strict disclosure agreement with Intel Corporation. Engineers must hold a current Confidentiality and Non-Disclosure Agreement (CNDA) with Intel to obtain the complete datasheet, reference schematics, layout guidelines, or SVID command tables. Aetrix Electronics provides preliminary package and ordering information, but full technical documentation requires direct engagement with TI's VR team at [email protected] for the TPS53641RSBR.
What package type and thermal requirements apply to the TPS53641RSBR?
The TPS53641RSBR uses a wettable flank WQFN-40 (RSB) package measuring 5 mm × 5 mm with 0.8 mm maximum height and an exposed thermal pad (Pin 41). Per TI SLUA271, the thermal pad must be fully soldered to a PCB copper plane for thermal dissipation and mechanical reliability. The device operates from –10°C to +105°C ambient and requires proper thermal via placement under the pad for the TPS53641RSBR.
Can the TPS53641RSBR operate without an external SVID host controller?
No - the TPS53641RSBR relies on an SVID 3.0 host (typically the CPU or BMC) to configure operating parameters, initiate power-on sequences, and report telemetry. It does not support standalone analog VID or fixed-voltage modes. All voltage setting, phase control, and fault reporting occur via the SVID bus, making host firmware integration mandatory for functional deployment of the TPS53641RSBR.
How many phases can the TPS53641RSBR drive, and what is its maximum supported output current?
The TPS53641RSBR natively supports up to six interleaved phases per output, enabling total output currents exceeding 300 A when paired with appropriate external DrMOS or discrete power stages. Current capability is determined by external component selection - not the TPS53641RSBR itself - but its integrated gate drivers and IMON sensing are validated for 6-phase operation with balanced current sharing and thermal derating per TI reference designs.
TPS53641RSBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- D-CAP+™
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Controller, Intel VR12, VR12.5
- Voltage - Input:
- 4.5V ~ 20V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.5V ~ 2.5V
- Operating Temperature:
- -10°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-WQFN (5x5)
TPS53641RSBR FAQ
1.How can I place an order for TPS53641RSBR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS53641RSBR 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 TPS53641RSBR reliable?
The price and inventory of TPS53641RSBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS53641RSBR is usually 5 days.
3.What payment methods are accepted for TPS53641RSBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS53641RSBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS53641RSBR?
TPS53641RSBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS53641RSBR 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 TPS53641RSBR?
For technical support, including TPS53641RSBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS53641RSBR requirements.
6.How does Aetrix verify that TPS53641RSBR is sourced from the original manufacturer or authorized distributors?
All TPS53641RSBR 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 TPS53641RSBR meets industry standards.
7.What is the process for return or replacement of TPS53641RSBR?
All TPS53641RSBR units undergo pre-shipment inspection (PSI). If there is an issue with TPS53641RSBR, 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 TPS53641RSBR part is unused and in its original packaging.
Return procedure for TPS53641RSBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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