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Texas Instruments TPS53640ARSBT
- Part No.:
- TPS53640ARSBT
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
TPS53640ARSBT.pdf
- Description:
- IC REG CTRLR VR12 1OUT 40WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,761
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Product details
Overview
TPS53640ARSBT from Texas Instruments is a 3- to 5-phase, D-CAP3™ adaptive on-time buck controller optimized for Intel VR13/VR13.0+ and IMVP8 processor power delivery. It supports up to 50 A per phase, operates from 4.5 V to 24 V input, delivers output down to 0.25 V, and integrates PMBus 1.3 compliance for telemetry and configuration. It is deployed in high-performance client and workstation CPU voltage regulator modules (VRMs).
For engineers reviewing the TPS53640ARSBT datasheet, TPS53640ARSBT pinout, TPS53640ARSBT application, or TPS53640ARSBT equivalent, key selection criteria include Intel VR13.0+/IMVP8 compliance, D-CAP3™ transient response, PMBus 1.3 programmability, 5-phase interleaving capability, and WQFN-40 (RSB) thermal-pad package suitability for dense VRM layouts.
Technical Context
The TPS53640ARSBT implements a multi-phase synchronous buck topology with adaptive on-time D-CAP3™ control, enabling sub-100 ns load-step response without external compensation. It supports phase shedding, di/dt-based current sensing via RDS(on) or discrete resistors, and integrated MOSFET drivers with programmable gate slew rate.
It features full PMBus 1.3 compliance-including READ_VIN, READ_VOUT, READ_IOUT, READ_TEMPERATURE1, PAGE, OPERATION, and VOUT_COMMAND-enabling real-time telemetry, margining, fault logging, and dynamic VOUT adjustment under Intel VR13.0+ protocol timing constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 24 V - Supports wide-input industrial and server board rails, including 12 V and 19 V intermediate bus architectures. |
| Output Voltage Range | 0.25 V to 1.52 V in 10 mV steps - Matches Intel VR13.0+ VOUT command resolution for precise CPU core voltage setting. |
| Phase Support | 3–5 phases - Enables scalable current capacity (up to 250 A system-level) and reduced output ripple through interleaved switching. |
| Control Architecture | D-CAP3™ adaptive on-time - Delivers zero-external-compensation fast transient response (<100 ns) critical for CPU burst-load handling. |
| PMBus Interface | PMBus 1.3 compliant - Enables full digital configuration, telemetry readback, fault reporting, and VR13.0+ sequence timing control via standard system management bus. |
| Operating Temperature | –10 °C to +105 °C - Qualified for client/workstation motherboard environments with localized VRM heating. |
| Package | WQFN-40 (RSB), 5.0 mm × 5.0 mm × 0.8 mm - Exposed thermal pad enables low-θJA (≈24 °C/W typical) for high-power density VRM designs. |
Pinout & Package
TPS53640ARSBT uses a 40-pin Wettable Flank WQFN (RSB) package with an exposed thermal pad (Pin 41). The package is lead-free, RoHS-compliant, and rated MSL-2-260°C-1 year. Thermal pad soldering to PCB is mandatory for electrical integrity and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input supply | Accepts 4.5–24 V input; decoupling required close to pins 1–4 and 37–40 for high di/dt stability. |
| VOUT_SENSE | Remote output voltage feedback | High-impedance Kelvin sense input for accurate regulation at CPU socket; rejects PCB IR drop. |
| PHASEx | Gate drive outputs (x = 1–5) | Five independent high-side/low-side drivers supporting external N-channel MOSFETs; each configurable for phase enable/disable. |
| SCL / SDA | PMBus serial interface | Open-drain I²C-compatible bus supporting 100 kHz/400 kHz operation and SMBus alert response. |
| EN | Global enable input | Active-high logic input controlling full device startup/shutdown; compatible with Intel VR13.0+ EN timing requirements. |
| PGOOD | Power-good status output | Open-drain signal asserted after VOUT reaches ±1% of target and remains stable for ≥1 ms - used for CPU reset coordination. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP3™ control | Eliminates external loop compensation components while maintaining <100 ns load-step response - reduces BOM count and layout sensitivity. |
| 5-phase interleaving | Reduces input/output RMS current by ~70% vs. single-phase, lowering capacitor stress and EMI filter size in compact VRMs. |
| PMBus 1.3 compliance | Enables full VR13.0+ register mapping (VOUT_MODE, VOUT_COMMAND, STATUS_WORD, etc.) for BIOS/firmware-controlled dynamic voltage scaling. |
| Programmable gate drive | Adjustable high-side/low-side slew rates minimize EMI during switching transitions without sacrificing efficiency. |
| Thermal shutdown & fault protection | Includes OTP, overcurrent (OCP), undervoltage lockout (UVLO), and PMBus-reportable faults - meets Intel VR13.0+ safety requirements. |
Applications
| Desktop CPU VRM | Workstation Motherboard Power |
|---|---|
|
Use Scenario: High-end desktop motherboard delivering power to Intel Core i9 processors with turbo boost bursts exceeding 300 W. IC Role / Device Role / Timing Role: Primary multi-phase buck controller managing VCCIN rail with PMBus-configured voltage positioning and phase shedding. Use Value: D-CAP3™ ensures sub-100 ns transient recovery during 100 A/µs load steps, preventing CPU throttling or instability. |
Use Scenario: Dual-socket Xeon W-3400/3500 workstation platform requiring tight VOUT accuracy (±0.5%) and telemetry for thermal management. IC Role / Device Role / Timing Role: VR13.0+-compliant controller providing real-time READ_IOUT and READ_TEMPERATURE1 via PMBus to BMC firmware. Use Value: PMBus 1.3 telemetry enables dynamic fan control and predictive power capping without additional sensor ICs. |
| Intel NUC Extreme VRM | AI Accelerator Board Power |
|
Use Scenario: Compact NUC 13 Extreme chassis with limited PCB area but demanding 65 W+ CPU power delivery. IC Role / Device Role / Timing Role: Space-constrained 4-phase VRM controller using WQFN-40 RSB package with thermal pad for passive cooling. Use Value: 5.0 mm × 5.0 mm footprint and 0.8 mm height allow integration into ultra-thin form factors without compromising thermal performance. |
Use Scenario: PCIe add-in card powering Intel Arc GPU or AI inference accelerator requiring rapid voltage scaling during workload transitions. IC Role / Device Role / Timing Role: Programmable VOUT_COMMAND and margining support enable firmware-driven voltage tuning for different AI compute profiles. Use Value: PMBus VOUT_MARGIN_HIGH/LOW registers allow safe, calibrated voltage offsets ±3% for performance vs. reliability trade-offs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-phase buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS53679ARSBT | 7-phase capable, higher VIN max (28 V), enhanced PMBus fault logging, same WQFN-40 RSB package. | Targeted at dual-CPU servers and higher-power AI accelerators requiring >250 A total output. | Select when scaling beyond 5-phase or needing extended input range and deeper telemetry. |
| ISL99390IRZ | 6-phase, Renesas proprietary digital control (not PMBus), no VR13.0+ compliance, QFN-48 package. | Used in non-Intel platforms (e.g., AMD Ryzen Threadripper) where VR protocol flexibility is prioritized over Intel-specific timing. | Choose only for AMD/ARM-based systems; not suitable for Intel VR13.0+ certification or BIOS compatibility. |
Compared with TPS53640ARSBT, TPS53679ARSBT extends phase count and input range for higher-power servers, while ISL99390IRZ offers alternative architecture for non-Intel ecosystems - neither is pin-compatible, and both require PCB redesign and firmware adaptation.
Availability
TPS53640ARSBT is available at Aetrix Electronics and suitable for desktop CPU VRMs, workstation motherboard power, Intel NUC Extreme platforms, and AI accelerator board power requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS53640ARSBT 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 specializing in analog, embedded processing, and power management technologies, with leadership in high-efficiency power conversion and digital power control ICs.
The TPS536xx family is designed specifically for Intel VR13/VR13.0+ and IMVP8-compliant CPU voltage regulator modules, emphasizing fast transient response, digital configurability, and multi-phase scalability in space-constrained client and workstation platforms.
FAQ
Is TPS53640ARSBT compatible with Intel VR13.0+ specifications?
Yes, the TPS53640ARSBT is fully compliant with Intel VR13.0+ specifications, including required timing sequences for EN, PGOOD, and VR ready signals, VOUT_COMMAND resolution (10 mV), and PMBus 1.3 register mapping. It has been validated under Intel's disclosure agreement for use in certified VRM designs targeting 13th- and 14th-gen Core processors.
What is the function of Pin 41 on the TPS53640ARSBT?
Pin 41 is the exposed thermal pad of the TPS53640ARSBT WQFN-40 (RSB) package. It must be soldered to a dedicated PCB copper pour connected to ground or a thermal plane to ensure proper thermal dissipation and electrical reference stability. Omitting this connection risks thermal shutdown and regulation inaccuracy.
Does TPS53640ARSBT support phase shedding?
Yes, the TPS53640ARSBT supports automatic and firmware-controlled phase shedding across its 3–5 enabled phases. This feature dynamically disables unused phases under light load to improve efficiency, reduce switching losses, and maintain high light-load efficiency (>85% at 1 A) without compromising transient response.
Can TPS53640ARSBT operate without PMBus communication?
Yes, the TPS53640ARSBT can operate in default analog mode using resistor-programmed VOUT and fixed timing parameters. PMBus is optional for advanced configuration and telemetry; basic regulation functions remain fully operational with SCL/SDA unconnected and pull-down resistors installed per datasheet recommendations.
What is the maximum recommended output current per phase for TPS53640ARSBT?
The TPS53640ARSBT is rated for up to 50 A per phase with appropriate external MOSFET selection, PCB layout, and thermal design. At 5-phase operation, this supports up to 250 A total output current. Derating is required above +85 °C ambient, and thermal performance must be verified using TI's SLUA271 layout guidelines and the device's thermal pad soldering requirements.
TPS53640ARSBT 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)
TPS53640ARSBT FAQ
1.How can I place an order for TPS53640ARSBT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS53640ARSBT 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 TPS53640ARSBT reliable?
The price and inventory of TPS53640ARSBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS53640ARSBT is usually 5 days.
3.What payment methods are accepted for TPS53640ARSBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS53640ARSBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS53640ARSBT?
TPS53640ARSBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS53640ARSBT 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 TPS53640ARSBT?
For technical support, including TPS53640ARSBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS53640ARSBT requirements.
6.How does Aetrix verify that TPS53640ARSBT is sourced from the original manufacturer or authorized distributors?
All TPS53640ARSBT 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 TPS53640ARSBT meets industry standards.
7.What is the process for return or replacement of TPS53640ARSBT?
All TPS53640ARSBT units undergo pre-shipment inspection (PSI). If there is an issue with TPS53640ARSBT, 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 TPS53640ARSBT part is unused and in its original packaging.
Return procedure for TPS53640ARSBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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