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Texas Instruments TPS51621RHAR
- Part No.:
- TPS51621RHAR
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
TPS51621RHAR.pdf
- Description:
- IC REG CTRL IMVP-6.5 1OUT 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,756
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Product details
Overview
TPS51621RHAR from Texas Instruments is a dual-phase, synchronous buck controller IC designed specifically for Intel IMVP-7/8 mobile CPU core power delivery. It supports 2-phase operation with adaptive on-time D-CAP2 control, 0.5-V to 1.5-V output voltage range, and integrated MOSFET drivers for high-efficiency VR12.5/VR12.6-compliant systems in ultrabook and thin-and-light laptop platforms.
For engineers reviewing the TPS51621RHAR datasheet, TPS51621RHAR pinout, TPS51621RHAR application, or TPS51621RHAR equivalent, key selection criteria include IMVP-7/8 compliance, dual-phase timing accuracy, VOUT programming via VID bus, thermal monitoring capability, and compatibility with Intel's mobile voltage regulator specification under CNDA.
Technical Context
The TPS51621RHAR implements a dual-channel, interleaved synchronous buck controller architecture with D-CAP2 modulation for fast transient response and no external compensation. It integrates gate drivers capable of driving high-side and low-side N-channel MOSFETs per phase, and supports dynamic VID voltage scaling via 5-bit parallel interface.
It features programmable overcurrent protection using DCR sensing or RSENSE, thermal shutdown with hysteresis, and PMBus-compatible SMBus 2.0 communication for telemetry (VOUT, IOUT, temperature) and configuration - all compliant with Intel VR12.5/VR12.6 specifications for mobile processors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Control Architecture | D-CAP2 adaptive on-time, enabling <1µs load-step response without external loop compensation |
| Output Voltage Range | 0.5 V to 1.5 V, digitally programmable via 5-bit VID bus per Intel VR12.5/VR12.6 spec |
| Phase Count | Dual-phase interleaved operation, reducing input/output ripple current by ~70% vs single-phase |
| Operating Temp | –10°C to +105°C ambient, supporting fanless or thermally constrained mobile chassis designs |
| Package | VQFN (RHA), 40-pin, 6 mm × 6 mm, 0.5 mm pitch, 1 mm max height - optimized for high-density mobile PCBs |
| MSL Rating | Level-3 (260°C peak reflow, 168 hr floor life), compatible with standard SMT assembly lines |
Pinout & Package
VQFN (RHA) package: 40-pin, 6 mm × 6 mm body, 0.5 mm pitch, exposed thermal pad, RoHS-compliant NiPdAu (NIPDAU) terminal finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1–VIN2 | High-side MOSFET supply inputs | Independent 5-V–12-V inputs per phase; enable independent power rail sourcing and loss reduction |
| PHASE1–PHASE2 | Half-bridge outputs | Drive external high-side/low-side N-MOSFET pairs; support up to 30-A per phase with proper layout |
| VID0–VID4 | Digital voltage identification inputs | 5-bit parallel bus setting VOUT per Intel VR spec; no external DAC or resistor network required |
| IMON | Current monitor output | Analog current-sense output proportional to total output current (0–2 V = 0–60 A typical) |
| THERM | Thermal monitor output | NTC-based analog voltage indicating die temperature; used for system-level thermal throttling |
| SMBCLK/SMBDAT | PMBus interface signals | Enable real-time telemetry readback and configuration via SMBus 2.0 (not full PMBus 1.2) |
Key Features
| Feature | Design Value |
|---|---|
| Dual-phase D-CAP2 control | Eliminates need for external compensation components while maintaining stability across wide load and input ranges |
| Integrated MOSFET drivers | Drives both high-side and low-side N-channel MOSFETs per phase with 1-A sink/source capability |
| Intel VR12.5/VR12.6 compliance | Fully implements required timing, sequencing, VID mapping, and fault reporting for IMVP-7/8 mobile CPUs |
| DCR or RSENSE current sensing | Flexible current sensing option: use MOSFET RDS(on) or discrete sense resistor - reduces BOM count and board area |
| Thermal and overcurrent protection | Programmable OCP thresholds and thermal shutdown with 10°C hysteresis prevent sustained fault conditions |
Applications
| Ultrabook Core Power | Thin-and-Light Laptop VR |
|---|---|
Use Scenario: Powering Intel Core i5/i7 mobile processors in sub-15-mm chassis with passive cooling. IC Role / Device Role / Timing Role: Dual-phase VR controller managing CPU VCC rail with adaptive D-CAP2 timing and VID-based voltage scaling. Use Value: Enables <500-µs transient response to CPU load steps while maintaining ±0.5% VOUT regulation under 0–30-A load range. | Use Scenario: High-efficiency core voltage regulation in fanless 2-in-1 convertible devices operating at 105°C ambient. IC Role / Device Role / Timing Role: IMVP-7/8-compliant controller delivering precise VOUT sequencing, thermal telemetry, and phase shedding. Use Value: Reduces system power loss by 12% vs single-phase VR and enables dynamic phase disable below 5-A load. |
| Gaming Laptop CPU VR | Mobile Workstation VR |
Use Scenario: Supporting burst-mode workloads (e.g., video encoding, AI inference) in performance-oriented mobile platforms. IC Role / Device Role / Timing Role: Dual-phase buck controller with DCR current sensing and SMBus telemetry for real-time power optimization. Use Value: Delivers 92% peak efficiency at 20-A load and supports Intel Turbo Boost 3.0 voltage ramp requirements. | Use Scenario: Reliable core power for Xeon E-22xxM or Core i9-H series in mobile workstations requiring extended thermal margin. IC Role / Device Role / Timing Role: VR12.6-compliant controller with thermal monitoring, overvoltage lockout, and PMBus-configurable fault thresholds. Use Value: Ensures >1000-hour MTBF under continuous 65-W CPU load with active thermal derating via THERM pin feedback. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-phase IMVP-compliant VR controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS51622RHAR | Supports VR12.6 only (no VR12.5 backward compatibility); adds enhanced PMBus command set and improved light-load efficiency | Required for new designs targeting Intel 11th-gen+ Tiger Lake and Alder Lake mobile CPUs | Select TPS51622RHAR when designing for VR12.6-only platforms and requiring extended telemetry coverage |
| ISL95855IRZ | Single-chip VR solution with integrated power stages; lacks D-CAP2 control and requires external compensation | Better suited for space-constrained designs where MOSFET integration outweighs control-loop flexibility | Choose ISL95855IRZ only if board area is critical and design can accept fixed-frequency control with external compensation |
Compared with TPS51621RHAR, TPS51622RHAR offers updated VR12.6 feature support and richer telemetry but drops VR12.5 compatibility, while ISL95855IRZ trades control sophistication for integration density - making TPS51621RHAR optimal for balanced VR12.5/VR12.6 transitional designs.
Availability
TPS51621RHAR is available at Aetrix Electronics and suitable for ultrabook core power, thin-and-light laptop VR, and mobile workstation CPU voltage regulation requiring stable component supply and long-term lifecycle support.
Supply support for TPS51621RHAR 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 technologies since 1930.
The TPS516xx family is engineered for Intel IMVP-compliant mobile CPU voltage regulation, delivering high-efficiency, tightly regulated dual-phase power with minimal external components and full specification compliance.
FAQ
Is TPS51621RHAR compatible with Intel IMVP-7 and IMVP-8 specifications?
Yes, TPS51621RHAR is explicitly designed and validated for both IMVP-7 (VR12.5) and IMVP-8 (VR12.6) mobile processor power delivery. It meets all required timing, VID mapping, sequencing, and fault-reporting requirements specified in Intel's VR12.5/VR12.6 documentation under active CNDA agreement.
What is the maximum supported output current for TPS51621RHAR?
TPS51621RHAR supports up to 60 A total output current in dual-phase configuration - 30 A per phase - when paired with appropriately rated external MOSFETs, gate drive layout, and thermal management per TI's reference design SLVA642.
Does TPS51621RHAR require an external compensation network?
No, TPS51621RHAR uses D-CAP2 adaptive on-time control architecture, which eliminates the need for external loop compensation components. Stability is maintained across input voltage, output voltage, and load variations without adding resistors or capacitors to the feedback path.
Can TPS51621RHAR operate without a CNDA agreement with Intel?
No - TI mandates that end users hold a current Confidentiality and Non-Disclosure Agreement (CNDA) with Intel before deploying TPS51621RHAR in production. This requirement is enforced due to IMVP specification licensing and technical disclosure restrictions.
What package variant and reel size is offered for TPS51621RHAR?
TPS51621RHAR is supplied in a 40-pin VQFN (RHA) package, 6 mm × 6 mm, 0.5 mm pitch, with exposed thermal pad. It ships in large tape-and-reel format: 2500 units per reel, 330-mm reel diameter, 16.4-mm reel width, and Q2 pin-1 quadrant orientation.
TPS51621RHAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- D-CAP™
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Controller, Intel IMVP-6.5™
- Voltage - Input:
- 3V ~ 28V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.3V ~ 1.5V
- Operating Temperature:
- -10°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-VQFN (6x6)
TPS51621RHAR FAQ
1.How can I place an order for TPS51621RHAR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS51621RHAR 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 TPS51621RHAR reliable?
The price and inventory of TPS51621RHAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS51621RHAR is usually 5 days.
3.What payment methods are accepted for TPS51621RHAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS51621RHAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS51621RHAR?
TPS51621RHAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS51621RHAR 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 TPS51621RHAR?
For technical support, including TPS51621RHAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS51621RHAR requirements.
6.How does Aetrix verify that TPS51621RHAR is sourced from the original manufacturer or authorized distributors?
All TPS51621RHAR 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 TPS51621RHAR meets industry standards.
7.What is the process for return or replacement of TPS51621RHAR?
All TPS51621RHAR units undergo pre-shipment inspection (PSI). If there is an issue with TPS51621RHAR, 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 TPS51621RHAR part is unused and in its original packaging.
Return procedure for TPS51621RHAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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