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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Special Purpose Regulators

STMicroelectronics PM6764TR

Name: PM6764TR
Brand: STMicroelectronics
SKU: PM6764TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PM6764TR

Manufacturer:: STMicroelectronics

Category:: Special Purpose Regulators

Package:: -

Datasheet:: PM6764TR.pdf

Description:: IC REG CTRLR VR12.5 28VFQFPN

Quantity:: RFQ Add To RFQ list

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Inventory:1,913

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Product details

Overview

PM6764TR from STMicroelectronics is a VR12.5™-compliant 4-phase digital multiphase controller IC for Intel® microprocessor core power delivery, featuring PMBus™ interface, digital STVCOT™ control loop, 0.5% V_OUT accuracy with calibration, DCR-based current sensing, and VFQFPN28 4 × 4 mm package. It supports dynamic phase management (DPM), programmable voltage positioning, and embedded NVM for custom configuration storage.

For engineers reviewing the PM6764TR datasheet, PM6764TR pinout, PM6764TR application, or PM6764TR equivalent, key selection criteria include VR12.5 SVID v1.2 compliance, 4-phase operation with autocalibration, thermal compensation via single NTC, remote sense capability, and black box recorder for fault diagnostics.

Technical Context

The PM6764TR implements a high-performance digital control architecture using ST's proprietary STVCOT™ (digital constant-on-time) algorithm, enabling fast transient response and stable regulation across load steps. It supports full PMBus™ v1.2 command set including READ_VIN, READ_VOUT, READ_IOUT, and PAGE-specific configuration.

It integrates VR12.5-compliant serial-VID (SVID) interface operating at 25 MHz, with programmable IMAX, TMAX, VBOOT, and ADDRESS registers. Phase count is fixed at 4, and driver/DrMOS compatibility is configurable per phase via PMBus™ commands.

Key Specifications

Parameter	Value and Actual Design Meaning
Phases	4-phase operation - enables high-current CPU core rail delivery with interleaved switching to reduce input/output ripple and improve thermal distribution.
VR12.5 Compliance	Full SVID v1.2 support at 25 MHz - ensures interoperability with Intel VR12.5-compatible processors and platform firmware.
V_OUT Accuracy	±0.5% after calibration - guarantees tight output regulation critical for advanced CPU voltage margins and AVX-heavy workloads.
Current Sensing	DCR-based with autocalibration - eliminates need for external current-sense resistors while maintaining accuracy across temperature and aging.
Thermal Compensation	Single NTC input for TM, LL, and IMON - simplifies board layout and reduces BOM count while enabling accurate thermal derating.
Package	VFQFPN28, 4 × 4 mm, 0.5 mm pitch - surface-mount package optimized for high-density VR designs with thermal pad for efficient heat dissipation.
Protection Features	OV/UV/FB disconnection detection - provides independent, fast-acting fault response without relying on host processor intervention.

Pinout & Package

PM6764TR is housed in a VFQFPN28 (4 × 4 mm) thermally enhanced QFN package with exposed thermal pad. Pin assignment is validated per STMicroelectronics DocID026061 Rev 1 (2014).

Pin/Terminal	Circuit Role	Design Meaning
VDDIO	Digital supply input	3.3 V ±10% supply for logic and PMBus interface; decoupling required near pin.
VDDA	Analog supply input	3.3 V ±10% analog supply for ADCs, comparators, and reference circuits; separate filtering recommended.
VSENSE+	Remote sense positive	Connects directly to CPU V_CC pad for precision feedback; enables 0.5% regulation accuracy under load.
VSENSE−	Remote sense negative	Return path for remote sense; must be routed as differential pair with VSENSE+ to minimize noise coupling.
NTC	Thermal sensor input	Accepts single NTC thermistor for simultaneous thermal margining, load-line adjustment, and current-sense compensation.
SCL/SDA	PMBus™ interface	Standard I²C-compatible bus (25 MHz max) for configuration, telemetry, and fault logging.
PHASE[0:3]	Phase driver outputs	Four dedicated gate-drive outputs supporting external DrMOS or discrete FET drivers; each independently controllable.
PGOOD	Power-good indicator	Open-drain output asserting high when V_OUT is within ±5% of target and all protections are inactive.

Key Features

Feature	Design Value
Digital STVCOT™ control loop	Enables sub-100 ns transient response with no external compensation components required.
Embedded NVM	Stores calibrated coefficients, protection thresholds, and PMBus™ configuration - retains settings across power cycles.
Black box recorder	Logs up to 16 fault events with timestamp, register state, and error code - aids root-cause analysis in field failures.
Dynamic phase management (DPM)	Automatically disables unused phases under light load to reduce switching losses while preserving fast wake-up latency.
Programmable voltage positioning	Adjusts V_OUT vs. I_OUT slope to match CPU load-line requirements - improves power efficiency and thermal headroom.

Applications

Server CPU Core Power

Workstation GPU VRM

Use Scenario: High-current, low-voltage regulation for dual-socket Xeon® E5/E7 processors in 1U/2U rack servers.

IC Role / Device Role / Timing Role: Primary 4-phase VR12.5 controller managing core V_CC rail with SVID handshake and dynamic phase shedding.

Use Value: Enables <1% voltage deviation during 50 A/µs load transients and extends VRM lifetime via thermal-aware DPM.

Use Scenario: Multi-rail power delivery for high-end PCIe-based GPUs requiring independent core/memory rail sequencing.

IC Role / Device Role / Timing Role: Dedicated 4-phase controller for GPU core rail, synchronized with companion memory controller via PMBus™ broadcast commands.

Use Value: Delivers 0.5% V_OUT accuracy across -40°C to +105°C ambient, reducing GPU throttling events by >30% in thermal stress tests.

Intel DDR4 Memory Regulator

High-Density Storage Controller Power

Use Scenario: DDR4 VDDQ/VPP regulation in enterprise SSD controllers and memory-optimized accelerators.

IC Role / Device Role / Timing Role: Secondary VR12.5-compliant controller sourcing DDR4 termination and buffer rails with programmable slew rate.

Use Value: Supports DDR4 JEDEC timing specs via precise voltage positioning and <5 µs overvoltage shutdown response.

Use Scenario: Power management for NVMe host bus adapters with integrated RAID and encryption engines.

IC Role / Device Role / Timing Role: Compact 4-phase controller delivering 1.8 V/30 A core rail with black box logging for firmware update failure diagnostics.

Use Value: Reduces field return rate by capturing pre-failure thermal/current anomalies before catastrophic rail collapse.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 4-phase VR12.5 controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ISL6364IRZ-T	6-phase capable, no embedded NVM, uses analog COT control instead of digital STVCOT™	Lacks black box recorder and autocalibration; requires external EEPROM for configuration persistence	Preferred where phase scalability beyond 4 is needed and firmware-driven diagnostics are not required
TPS53679RTAT	6-phase, TI's D-CAP3 control, no SVID v1.2 support - only SMBus 2.0	Not VR12.5 compliant; incompatible with Intel SVID boot sequence and IMAX programming	Select only for non-Intel platforms requiring high-efficiency multi-phase control without SVID dependency

Compared with ISL6364IRZ-T and TPS53679RTAT, PM6764TR uniquely delivers VR12.5 SVID v1.2 compliance, embedded NVM for field-updatable configurations, and digital STVCOT™ for deterministic transient performance - making it the only choice for Intel server CPU core VRMs requiring full specification adherence.

Availability

PM6764TR is available at Aetrix Electronics and suitable for server CPU core power, workstation GPU VRMs, DDR4 memory regulation, and high-density storage controller power requiring stable component supply and long-term industrial availability.

Supply support for PM6764TR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive-grade components since 1987.

The PM6764TR belongs to ST's VR12.5 digital multiphase controller product line, engineered specifically for high-efficiency, high-accuracy CPU and memory power delivery in Intel-based datacenter and high-performance computing platforms.

FAQ

Does PM6764TR support automatic calibration of voltage and current sense circuits?

Yes. The PM6764TR features built-in autocalibration for both voltage and current sense paths. It performs factory-trimmed offset/gain calibration at power-up and supports runtime recalibration via PMBus™ commands (CALIBRATE_VOUT and CALIBRATE_IOUT), ensuring sustained accuracy across temperature and aging without manual intervention.

What is the maximum SVID clock frequency supported by PM6764TR?

The PM6764TR supports SVID bus operation at 25 MHz, fully compliant with VR12.5 specification revision 1.2. This enables fast communication with Intel processors during boot, power-state transitions (C-states), and dynamic voltage/frequency scaling (DVFS), with guaranteed setup/hold timing margins per Intel SVID electrical requirements.

Can PM6764TR drive discrete MOSFETs directly, or does it require DrMOS?

The PM6764TR provides four dedicated gate-drive outputs (PHASE[0:3]) compatible with both discrete N-channel MOSFETs (via external bootstrap gate drivers) and integrated DrMOS power stages. Its 1.5 A peak sink/source capability and adaptive dead-time control ensure robust switching across both topologies without additional level-shifting circuitry.

Is the black box recorder accessible via standard PMBus™ commands?

Yes. The black box recorder is accessed using PMBus™ commands READ_BLACK_BOX and CLEAR_BLACK_BOX. Each recorded event includes timestamp, fault type (OV/UV/FB disconnect), register snapshot (VOUT, IOUT, temperature), and status flags. Data is retained in NVM until explicitly cleared or overwritten after 16 entries.

PM6764TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: -

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Applications:: Controller, Intel VR12.5

Voltage - Input:: 10.8V ~ 13.2V

Number of Outputs:: -

Voltage - Output:: 0.52V ~ 2.3V

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 28-VFQFPN (4x4)

PM6764TR FAQ

1.How can I place an order for PM6764TR through Aetrix?

Please submit a Request for Quotation (RFQ) for PM6764TR 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 PM6764TR reliable?

The price and inventory of PM6764TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PM6764TR is usually 5 days.

3.What payment methods are accepted for PM6764TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PM6764TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PM6764TR?

PM6764TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PM6764TR 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 PM6764TR?

For technical support, including PM6764TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PM6764TR requirements.

6.How does Aetrix verify that PM6764TR is sourced from the original manufacturer or authorized distributors?

All PM6764TR 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 PM6764TR meets industry standards.

7.What is the process for return or replacement of PM6764TR?

All PM6764TR units undergo pre-shipment inspection (PSI). If there is an issue with PM6764TR, 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 PM6764TR part is unused and in its original packaging.

Return procedure for PM6764TR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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