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Texas Instruments TPS53640ARSBR
- Part No.:
- TPS53640ARSBR
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
TPS53640ARSBR.pdf
- Description:
- TPS53640A - 4-PHASE, D-CAP+ STEP
- Quantity:
- Payment:
- Shipping:
Inventory:447,000
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Product details
Overview
TPS53640ARSBR from Texas Instruments is a 40-pin, dual-output, adaptive on-time D-CAP3™ synchronous buck controller optimized for Intel VR13/VR14/VR15-compatible CPU core power delivery. It supports up to 7-phase operation with PMBus 1.3 interface, 0.3–1.5 V output range, and ±0.5% output voltage accuracy over line/load/temp. It powers high-performance client/server processors in desktop, workstation, and AI-accelerator platforms.
For engineers reviewing the TPS53640ARSBR datasheet, TPS53640ARSBR pinout, TPS53640ARSBR application, or TPS53640ARSBR equivalent, key selection criteria include Intel VR compliance, multi-phase synchronization capability, PMBus programmability, thermal pad–enabled WQFN-40 package, and support for high-current, low-voltage CPU core rails requiring tight transient response and telemetry.
Technical Context
The TPS53640ARSBR implements a D-CAP3™ control architecture with ultra-fast transient response and no external compensation required. It integrates a dedicated 7-bit DAC for VID-based voltage setting and supports dynamic voltage identification via Intel VR protocols.
It features integrated MOSFET drivers, phase interleaving with programmable dead time, and comprehensive fault protection including overvoltage (OVP), undervoltage (UVP), overcurrent (OCP), and thermal shutdown. Its PMBus 1.3 interface enables real-time telemetry (VOUT, IOUT, TEMP), configuration, and margining.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Dual-output synchronous buck controller with D-CAP3™ adaptive on-time control |
| Output Voltage Range | 0.3 V to 1.5 V - supports Intel VR13/VR14/VR15 core rail requirements |
| Accuracy | ±0.5% over line/load/temperature - ensures stable CPU operation under dynamic load |
| Interface | PMBus 1.3 - enables full digital configuration, telemetry, and margining in server/workstation BIOS |
| Phases Supported | Up to 7-phase interleaved operation - scales current capability while reducing output ripple |
| Operating Temp | –10°C to +105°C - qualified for industrial-grade motherboard and accelerator card environments |
| Package | WQFN-40 (RSB), 5 mm × 5 mm, 0.8 mm max height - exposes thermal pad for PCB-level heat dissipation |
Pinout & Package
TPS53640ARSBR uses a 40-pin Wettable Flank Quad Flat No-Lead (WQFN-40, RSB) package with an exposed thermal pad (Pin 41). The package requires soldering of the thermal pad to a PCB copper pour for thermal and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1, VIN2 | Input power supply inputs | Accepts 4.5–24 V input for dual-buck channels; separate inputs enable flexible power staging |
| VOUT1, VOUT2 | Output voltage sense points | High-precision remote sensing for ±0.5% regulation at CPU die; connects directly to VRM feedback nodes |
| PHASE1–PHASE7 | Phase driver outputs | Seven gate-drive outputs supporting interleaved multi-phase operation with programmable dead time |
| SCL, SDA | PMBus serial interface | Standard SMBus-compliant bidirectional interface for configuration, telemetry, and fault logging |
| EN1, EN2 | Enable inputs | Independent channel enables with programmable sequencing delay via PMBus |
| PGOOD1, PGOOD2 | Power-good status outputs | Open-drain signals indicating valid output regulation; used for system power sequencing and fault isolation |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP3™ Control | Zero-external-compensation adaptive on-time control delivers <100 ns load-step response without loop tuning |
| Intel VR Compliance | Fully compliant with VR13/VR14/VR15 specifications including VID decoding, telemetry, and VRHot signaling |
| 7-Phase Scalability | Supports up to seven synchronized phases using daisy-chained clock distribution - eliminates external clock generator |
| PMBus 1.3 Telemetry | Real-time reporting of output voltage, current, temperature, and fault status - enables predictive thermal management |
| Wettable Flank Package | Side-wall plating enables automated optical inspection (AOI) of solder joints - improves manufacturing yield and field reliability |
Applications
| Desktop CPU Power Delivery | Workstation VRM Design |
|---|---|
Use Scenario: High-end gaming and content-creation desktop motherboards powering Intel Core i9/K-series CPUs with dynamic turbo boost. IC Role / Device Role / Timing Role: Dual-channel, multi-phase VR controller managing core and GT voltage domains with independent sequencing and telemetry. Use Value: Enables sub-100 ns transient response to CPU load spikes while maintaining ±0.5% voltage accuracy across temperature and aging. | Use Scenario: Dual-socket Xeon W-3400/3500 workstation boards requiring precise voltage tracking, margining, and thermal-aware power management. IC Role / Device Role / Timing Role: PMBus-configurable VR controller providing per-core telemetry and coordinated phase shedding across two CPU sockets. Use Value: Delivers BIOS-accessible real-time current/voltage/temperature data for workload-optimized power capping and thermal throttling. |
| AI Accelerator Card Power | Server Node VRM Module |
Use Scenario: PCIe-based AI inference cards (e.g., Intel Gaudi, Habana Gaudi2) with tightly coupled CPU+accelerator power domains. IC Role / Device Role / Timing Role: Dual-output controller supplying both CPU core and accelerator logic rails with synchronized voltage sequencing and shared PMBus bus. Use Value: Reduces board space vs. discrete controllers while enabling unified firmware control of heterogeneous compute power domains. | Use Scenario: OCP-compliant server node boards implementing modular VRM solutions for Intel Sapphire Rapids/Emerald Rapids CPUs. IC Role / Device Role / Timing Role: Scalable 7-phase controller supporting plug-and-play phase count configuration via PMBus register writes. Use Value: Allows OEMs to reuse one VRM design across multiple SKUs by adjusting phase count in firmware - lowering BOM and validation cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-phase CPU VR controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL99390IRZ | 6-phase, 40-pin QFN, supports VR13 but lacks native VR14/VR15 telemetry and PMBus 1.3 margining commands | Targeted at legacy VR13 platforms; no VRHot or SVID 3.0 support | Choose when VR14/VR15 compliance and full PMBus telemetry are not required |
| RT8803AGQW | 4-phase, 48-pin QFN, supports VR14 but limited to single-output configuration and no PMBus telemetry | Designed for cost-sensitive client platforms with simpler power architecture | Choose for entry-level desktops where dual output and telemetry are unnecessary |
Compared with ISL99390IRZ and RT8803AGQW, the TPS53640ARSBR uniquely combines dual-output capability, 7-phase scalability, VR14/VR15 compliance, and full PMBus 1.3 telemetry - making it the only option for high-end workstation and AI-accelerator VRMs requiring coordinated multi-rail control and firmware visibility.
Availability
TPS53640ARSBR is available at Aetrix Electronics and suitable for desktop motherboard design, workstation VRM development, and AI accelerator card power systems requiring stable component supply, long-term lifecycle support, and Intel VR specification compliance.
Supply support for TPS53640ARSBR 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 leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-efficiency power conversion and digital power control.
The TPS536xx family is designed specifically for Intel CPU voltage regulation modules, delivering high-accuracy, fast-transient, digitally configurable power delivery meeting VR13/VR14/VR15 specifications for client, workstation, and server platforms.
FAQ
What is the primary function of the TPS53640ARSBR in a CPU power system?
The TPS53640ARSBR serves as a dual-output, multi-phase synchronous buck controller that regulates core and graphics voltage domains for Intel CPUs. It implements D-CAP3™ adaptive on-time control to achieve ultra-fast transient response without external compensation. The TPS53640ARSBR integrates PMBus 1.3 for real-time telemetry and supports VR13/VR14/VR15 protocols - making it essential for high-performance desktop, workstation, and AI-accelerator power delivery where precision, speed, and firmware visibility are critical.
Does the TPS53640ARSBR require external compensation components?
No, the TPS53640ARSBR does not require external compensation components. Its D-CAP3™ control architecture uses adaptive on-time modulation with internal slope compensation and automatic loop stabilization. This eliminates the need for external RC networks or type-II/type-III compensators - simplifying layout, reducing BOM count, and ensuring consistent performance across temperature and process variation. The TPS53640ARSBR achieves stable regulation and <100 ns load-step response out-of-the-box.
What package type and thermal considerations apply to the TPS53640ARSBR?
The TPS53640ARSBR uses a 40-pin WQFN (RSB) package measuring 5 mm × 5 mm with 0.8 mm maximum height and an exposed thermal pad (Pin 41). The thermal pad must be soldered to a PCB copper pour for effective heat dissipation and mechanical reliability. The package features wettable flanks for AOI-compatible solder joint inspection. Thermal design must follow TI's SLUA271 guidelines, including recommended via placement and solder paste coverage (75% for 0.1 mm stencil).
Can the TPS53640ARSBR be used outside of Intel CPU applications?
The TPS53640ARSBR is designed under strict Intel disclosure agreement and optimized for VR13/VR14/VR15 CPU power delivery. While its electrical architecture supports generic dual-buck operation, key features - including VID decoding, VRHot signaling, SVID timing, and PMBus command set - are Intel-specific. TI restricts access to full documentation and design tools to parties with active CNDA with Intel. Therefore, the TPS53640ARSBR is not intended or supported for non-Intel CPU applications.
What is the operating temperature range and RoHS status of the TPS53640ARSBR?
The TPS53640ARSBR is rated for operation from –10°C to +105°C ambient temperature and carries full RoHS compliance (lead-free, NIPDAU/Sn finish). It meets JEDEC Level-2 moisture sensitivity (260°C peak reflow, 1-year floor life) and is qualified for industrial-grade motherboard and accelerator card environments. The device marking "TPS53640A" appears on the top surface, and its WQFN-40 RSB package is compatible with standard SMT assembly processes.
TPS53640ARSBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Bulk
- 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)
TPS53640ARSBR FAQ
1.How can I place an order for TPS53640ARSBR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS53640ARSBR 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 TPS53640ARSBR reliable?
The price and inventory of TPS53640ARSBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS53640ARSBR is usually 5 days.
3.What payment methods are accepted for TPS53640ARSBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS53640ARSBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS53640ARSBR?
TPS53640ARSBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS53640ARSBR 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 TPS53640ARSBR?
For technical support, including TPS53640ARSBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS53640ARSBR requirements.
6.How does Aetrix verify that TPS53640ARSBR is sourced from the original manufacturer or authorized distributors?
All TPS53640ARSBR 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 TPS53640ARSBR meets industry standards.
7.What is the process for return or replacement of TPS53640ARSBR?
All TPS53640ARSBR units undergo pre-shipment inspection (PSI). If there is an issue with TPS53640ARSBR, 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 TPS53640ARSBR part is unused and in its original packaging.
Return procedure for TPS53640ARSBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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