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Texas Instruments TPS51633RSMR
- Part No.:
- TPS51633RSMR
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TPS51633RSMR.pdf
- Description:
- IC REG CTRLR INTEL 1OUT 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,324
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Product details
Overview
TPS51633RSMR from Texas Instruments is a driverless, 3-phase D-CAP+™ step-down controller compliant with Intel® VR12.6 SVID protocol, delivering 0.50-V to 2.30-V output via 8-bit DAC, supporting 300–800 kHz switching frequency, 4.5–28 V input range, and operating across –40°C to 105°C for high-efficiency CPU voltage regulation in mobile platforms.
For engineers reviewing the TPS51633RSMR datasheet, TPS51633RSMR pinout, TPS51633RSMR application, or TPS51633RSMR equivalent, key selection criteria include VR12.6 SVID compliance, phase scalability (1/2/3-phase), PS3/PS4 low-power states, AutoBalance phase balancing, and support for DrMOS/Power Stage implementations without external gate drivers.
Technical Context
The TPS51633RSMR implements D-CAP+™ control architecture with overlapping pulse support, enabling fast transient response and reduced output capacitance. It integrates full VR12.6 I/O features - VR_READY (PGOOD), ALERT, VR_HOT - and supports SVID address programming (0–7).
Its driverless configuration eliminates external gate drivers, reducing component count and PCB area while enabling high-frequency operation up to 800 kHz. In PS4 mode, quiescent power consumption is typically 0.25 mW, and adjustable VCPU slew rate plus voltage positioning ensure precise dynamic load-line compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Control Architecture | D-CAP+™ with overlapping pulse support for sub-100 ns transient response and minimal output capacitor requirements |
| Output Voltage Range | 0.50 V to 2.30 V via 8-bit DAC - enables fine-grained VR12.6-compliant CPU core voltage scaling |
| Input Voltage Range | 4.5 V to 28 V - supports wide-input adapter, battery, and NVDC power architectures |
| Switching Frequency | 300 kHz to 800 kHz - selectable for optimal efficiency vs. size trade-off in multi-phase CPU VR designs |
| Phase Support | 1-, 2-, or 3-phase operation - scalable topology for mobile CPU power delivery from entry to high-performance segments |
| Thermal Range | –40°C to 105°C ambient - validated for sustained operation in thermally constrained laptop and tablet chassis |
| Low-Power State | PS4 quiescent power ≈ 0.25 mW - extends battery life during deep system idle without compromising wake-up latency |
Pinout & Package
TPS51633RSMR is housed in a thermally enhanced 32-pin VQFN (RSM) package measuring 4.00 mm × 4.00 mm with 0.4 mm pitch and an exposed thermal pad requiring PCB soldering for mechanical stability and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Primary input supply | Accepts 4.5–28 V input; powers internal LDOs and bias circuitry for controller operation |
| VDDIO | I/O supply rail | Provides regulated 3.3 V for SVID interface and logic; decoupling critical for signal integrity |
| SVID_DATA / SVID_CLK | SVID bidirectional bus | Carries Intel VR12.6 serial VID commands and status; requires pull-up and controlled trace routing |
| VR_HOT / ALERT / VR_READY | VR12.6 status outputs | Open-drain signals indicating thermal alert, general fault, and power-good sequencing compliance |
| PWM1–PWM3 | Phase drive outputs | Driverless gate-drive signals directly compatible with DrMOS inputs or discrete FET gate drivers |
| PHASE1–PHASE3 | Current-sense feedback inputs | Monitor per-phase current for AutoBalance phase balancing and overcurrent protection |
| SKIP | Light-load mode control | Enables diode emulation in DCM for improved light-load efficiency in single-phase operation |
Key Features
| Feature | Design Value |
|---|---|
| Patented AutoBalance Phase Balancing | Real-time per-phase current matching without external sensors - ensures uniform thermal distribution and extended FET lifetime |
| 8-Level OSR/USR Programmability | Configurable overshoot/undershoot reduction levels - enables precise transient response tuning for varying CPU load profiles |
| Adjustable Voltage Positioning | Programmable load-line slope - maintains stable VCPU under dynamic current changes per VR12.6 specification |
| Selectable 8-Level Current Limit | Per-phase overcurrent threshold setting - supports robust short-circuit protection across diverse Power Stage implementations |
| Driverless PWM Outputs | Integrated high-side/lower-side gate drivers - eliminates need for external gate drivers, reducing BOM count and layout complexity |
Applications
| Laptop CPU Voltage Regulation | Ultrabook Adaptive Power Delivery |
|---|---|
|
Use Scenario: Regulating VCPU in thin-and-light laptops with dual-core to quad-core Intel processors under dynamic workloads. IC Role / Device Role / Timing Role: VR12.6-compliant step-down controller managing 3-phase power conversion, SVID communication, and PS4 state transitions. Use Value: Enables <1% output voltage deviation during 10-A/µs CPU load steps while maintaining <0.25 mW PS4 quiescent power for >12-hour battery life. |
Use Scenario: Delivering adaptive 0.7–1.4 V VCPU rails in fanless ultrabooks with thermal envelope constraints. IC Role / Device Role / Timing Role: Driverless controller coordinating phase shedding, voltage positioning, and SVID-based dynamic VID updates. Use Value: Reduces solution footprint by 35% versus gate-driver-based alternatives and supports 800 kHz switching for smaller inductors and capacitors. |
| Tablet Platform VR Solutions | Mobile Workstation VR Modules |
|
Use Scenario: High-efficiency CPU power delivery in 10-inch tablets with limited board space and aggressive thermal limits. IC Role / Device Role / Timing Role: Single- or dual-phase VR12.6 controller implementing DCM light-load mode and PS3/PS4 state management. Use Value: Achieves >92% peak efficiency at 20 A and <10 µA shutdown current - extending active usage time without compromising transient response. |
Use Scenario: Robust 3-phase VCPU regulation for hexa/octa-core mobile workstations under sustained compute loads. IC Role / Device Role / Timing Role: Full-feature VR12.6 controller with digital current monitoring, VR_HOT thermal alert, and AutoBalance phase balancing. Use Value: Maintains phase current imbalance <±3% across temperature and load, preventing localized hotspots and enabling reliable 24/7 operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VR12.6 CPU voltage regulator controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS51622RSMR | 2-phase only; lacks PS4 ultra-low-power mode (0.25 mW); same 32-pin VQFN package and SVID interface | Targeted at mid-tier mobile CPUs with lower current demands; not suitable for PS4-critical battery-life optimization | Select when 2-phase operation suffices and PS4 power budget is relaxed; retains pin compatibility and layout reuse |
| ISL95852IRZ | 3-phase VR12.6 controller with integrated MOSFET drivers; requires external gate drivers for DrMOS; different pinout and package (40-pin QFN) | Designed for legacy motherboard-style layouts; higher solution cost due to driver integration and larger footprint | Choose for designs already committed to Intersil reference layouts or where integrated drivers simplify sourcing; not pin-compatible |
Compared with TPS51633RSMR, TPS51622RSMR offers reduced phase count and no PS4 mode - limiting battery-life extension in deep-idle scenarios - while ISL95852IRZ provides driver integration but increases PCB area and eliminates driverless simplification, making TPS51633RSMR optimal for compact, low-quiescent, scalable mobile VR designs.
Availability
TPS51633RSMR is available at Aetrix Electronics and suitable for laptop CPU voltage regulation, ultrabook adaptive power delivery, and tablet platform VR solutions requiring stable component supply, long-term lifecycle support, and qualified automotive-grade thermal performance.
Supply support for TPS51633RSMR 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 and embedded processing technologies, with leadership in power management ICs and high-reliability interface solutions.
The TPS51633RSMR belongs to TI's VR12.6-compliant CPU power controller product line, engineered specifically for mobile computing platforms requiring SVID protocol compliance, ultra-low PS4 power, and driverless multi-phase efficiency.
FAQ
What is the primary function of the TPS51633RSMR in a CPU power delivery system?
The TPS51633RSMR serves as a driverless, 3-phase step-down controller that implements Intel VR12.6 SVID protocol for precise CPU core voltage regulation. It manages PWM generation, phase balancing, voltage positioning, and PS3/PS4 state transitions - all without external gate drivers - making it central to efficient, compact, and standards-compliant mobile CPU VR designs.
Does the TPS51633RSMR support both 1-phase and 3-phase configurations?
Yes, the TPS51633RSMR supports scalable operation across 1-, 2-, and 3-phase topologies. Its driverless PWM outputs and AutoBalance algorithm adapt automatically to the selected phase count, enabling design reuse from entry-level dual-core to high-performance octa-core mobile processors without hardware changes.
What is the significance of the "driverless" feature in the TPS51633RSMR?
The "driverless" architecture of the TPS51633RSMR means it delivers fully buffered, high-current PWM signals directly compatible with DrMOS inputs or discrete FET gate drivers - eliminating the need for external gate driver ICs. This reduces component count, PCB area, and layout complexity while improving timing accuracy and EMI performance in high-frequency CPU VR applications.
How does the TPS51633RSMR achieve ultra-low power consumption in PS4 mode?
In PS4 mode, the TPS51633RSMR disables non-essential circuitry including PWM generation, current sensing, and SVID communication while retaining VR_HOT monitoring and basic state awareness. This results in a typical quiescent power draw of 0.25 mW - verified in TI's characterization data - enabling extended battery life during deep system idle without sacrificing wake-up responsiveness.
Is the TPS51633RSMR pin-compatible with other members of the TPS516xx family?
The TPS51633RSMR shares the same 32-pin VQFN (RSM) package and pinout with TPS51622RSMR, enabling direct layout reuse for 2-phase variants. However, it is not pin-compatible with TPS51631RSMR (which lacks PS4 support) or TPS51604 gate driver - those require distinct PCB footprints and signal routing per TI's official package drawings and schematic guidelines.
TPS51633RSMR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- D-CAP+™
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Controller, Intel VR12.5, VR12.6
- Voltage - Input:
- 4.5V ~ 28V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.5V ~ 2.5V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VQFN (4x4)
TPS51633RSMR FAQ
1.How can I place an order for TPS51633RSMR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS51633RSMR 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 TPS51633RSMR reliable?
The price and inventory of TPS51633RSMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS51633RSMR is usually 5 days.
3.What payment methods are accepted for TPS51633RSMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS51633RSMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS51633RSMR?
TPS51633RSMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS51633RSMR 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 TPS51633RSMR?
For technical support, including TPS51633RSMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS51633RSMR requirements.
6.How does Aetrix verify that TPS51633RSMR is sourced from the original manufacturer or authorized distributors?
All TPS51633RSMR 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 TPS51633RSMR meets industry standards.
7.What is the process for return or replacement of TPS51633RSMR?
All TPS51633RSMR units undergo pre-shipment inspection (PSI). If there is an issue with TPS51633RSMR, 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 TPS51633RSMR part is unused and in its original packaging.
Return procedure for TPS51633RSMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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