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Texas Instruments TPS51624RSMR
- Part No.:
- TPS51624RSMR
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TPS51624RSMR.pdf
- Description:
- IC REG CTRLR INTEL 1OUT 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,029
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Product details
Overview
TPS51624RSMR from Texas Instruments is a driverless, 2-phase D-CAP+™ step-down controller compliant with Intel® VR12.6 SVID specification, delivering 0.50-V to 2.30-V output via 8-bit DAC, supporting 300-kHz to 1.5-MHz switching frequency and 4.5-V to 28-V input range for VCPU power delivery in mobile computing platforms.
For engineers reviewing the TPS51624RSMR datasheet, TPS51624RSMR pinout, TPS51624RSMR application, or TPS51624RSMR equivalent, key selection considerations include VR12.6 serial VID compliance, AutoBalance phase balancing, 8-level OSR/USR transient control, PS3/PS4 low-power states, and QFN-32 thermal-pad package integration with discrete or DrMOS power stages.
Technical Context
The TPS51624RSMR implements D-CAP+™ architecture with overlapping pulse support to achieve fast transient response and minimal output capacitance. It integrates full VR12.6 I/O features including VR_READY (PGOOD), ALERT, and VR_HOT, with SVID address programmable from 0 to 7.
Operating across –40°C to 105°C, the controller supports both CCM and DCM in single-phase mode for light-load efficiency, and delivers 0.25 mW typical quiescent power in PS4 state. Voltage positioning and VCPU slew rate are fully adjustable to meet VR12.6 specification requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Control Architecture | D-CAP+™ with overlapping pulse support for sub-100-ns transient response and reduced bulk capacitance |
| Output Voltage Range | 0.50 V to 2.30 V via 8-bit DAC - enables precise VCPU regulation per VR12.6 SVID commands |
| Switching Frequency | 300 kHz to 1.5 MHz - selectable for optimal trade-off between efficiency, size, and EMI |
| Input Voltage Range | 4.5 V to 28 V - supports adapter, battery, NVDC, and 5-V/12-V rail inputs without external bias |
| Phase Configuration | 1- or 2-phase operation with patented AutoBalance - ensures current sharing within ±5% across phases |
| Low-Power States | PS3 and PS4 support - PS4 draws only 0.25 mW, enabling deep sleep in mobile CPU platforms |
| Overshoot/Undershoot Control | 8 independent OSR and USR levels - dynamically suppresses voltage excursions during load transients |
Pinout & Package
The TPS51624RSMR is housed in a thermally enhanced 4 mm × 4 mm, 32-pin VQFN (RSM) package with exposed thermal pad requiring PCB soldering for thermal and mechanical integrity. Pin 1 is located in Quadrant Q2 per tape orientation standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main power input | Accepts 4.5–28 V supply; powers internal circuitry and gate drivers |
| VDDIO | SVID interface supply | Provides 3.3-V bias for SVID bus logic; decoupling required for noise immunity |
| SVID_CLK / SVID_DATA | Serial VID interface | Two-wire SVID bus (addressable 0–7) for dynamic voltage/frequency commands from CPU |
| VR_READY (PGOOD) | Power-good indicator | Open-drain signal asserted when output is within ±1% of target and stable for >1 ms |
| ALERT / VR_HOT | Status reporting outputs | ALERT flags fault conditions; VR_HOT signals thermal warning per VR12.6 spec |
| PWM1 / PWM2 | Phase drive outputs | Driverless gate-drive signals compatible with discrete FETs, Power Blocks, or DrMOS inputs |
| PHASE1 / PHASE2 | Current sense inputs | High-side current sensing terminals for phase current monitoring and AutoBalance feedback |
| EXPOSED PAD | Thermal & ground reference | Must be soldered to large PCB copper area for thermal dissipation and low-impedance GND return |
Key Features
| Feature | Design Value |
|---|---|
| Driverless PWM outputs | Eliminates external gate drivers - reduces BOM count and layout complexity while enabling >1-MHz switching |
| AutoBalance phase balancing | Patented real-time current matching - maintains ≤±5% phase current imbalance without external compensation |
| 8-level OSR/USR control | Configurable transient suppression - independently tunes overshoot and undershoot response per load-step profile |
| Adjustable voltage positioning | Programmable droop slope - meets VR12.6 load-line requirements for stable CPU core regulation under dynamic loads |
| PS4 ultra-low quiescent power | 0.25 mW typical consumption - extends battery life during system suspend in mobile platforms |
Applications
| Mobile CPU Power Delivery | Ultrabook Adapter-Sourced VCPU Rail |
|---|---|
|
Use Scenario: High-performance laptop CPU requiring dynamic voltage scaling and rapid load transient response during burst workloads. IC Role / Device Role / Timing Role: VR12.6-compliant step-down controller managing two-phase VCPU power with SVID interface and PS4 sleep state. Use Value: Delivers <1% voltage deviation during 10-A/µs load steps using D-CAP+™ and 8-level USR, minimizing need for costly ceramic output capacitors. |
Use Scenario: Adapter-powered ultrabook platform where input rail varies between 12 V and 19.5 V, demanding wide VIN tolerance and high light-load efficiency. IC Role / Device Role / Timing Role: Primary 2-phase buck controller converting adapter voltage to tightly regulated VCPU rail with adaptive frequency and CCM/DCM mode switching. Use Value: Achieves >92% efficiency at 1-A load via DCM operation and maintains >88% at 50-A load using AutoBalance and optimized gate drive. |
| Battery-Backed VCPU System | NVDC Architecture for Dual-Rail CPUs |
|
Use Scenario: Thin-and-light notebook operating from 3-cell Li-ion battery (8.4–12.6 V) with strict thermal and efficiency constraints during video playback. IC Role / Device Role / Timing Role: Driverless controller enabling direct battery-to-VCPU conversion with PS3/PS4 state management and thermal derating. Use Value: Reduces solution footprint by eliminating gate drivers and achieves 0.25-mW PS4 quiescent power, extending standby time beyond 14 days. |
Use Scenario: Hybrid power architecture using both adapter and battery rails with seamless transition, requiring robust input fault protection and rail arbitration. IC Role / Device Role / Timing Role: VR12.6 controller interfacing with NVDC PMIC to coordinate VCPU rail sourcing and maintain uninterrupted operation during input switchover. Use Value: Supports NVDC-specific sequencing via VR_READY and ALERT signals, ensuring no CPU reset or voltage glitch during rail handoff. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VR12.6 VCPU controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL95852IRZ-T | Single-phase only; uses analog VID interface instead of SVID; lacks PS4 ultra-low-power mode | Targeted at legacy mobile platforms without SVID or deep-sleep requirements | Choose for cost-sensitive designs where VR12.6 compliance and PS4 are not required |
| RT8803AGQW | Supports 3-phase operation; includes integrated MOSFET drivers; no AutoBalance algorithm | Used in higher-current desktop/mobile APUs requiring >60-A total output and discrete driver flexibility | Choose when phase count >2 or integrated drivers are needed, accepting higher layout complexity |
Compared with ISL95852IRZ-T and RT8803AGQW, the TPS51624RSMR uniquely combines SVID compliance, driverless 2-phase operation, AutoBalance, and PS4 ultra-low-power mode-making it the only option meeting full VR12.6 mobile CPU requirements in compact QFN-32 packaging.
Availability
TPS51624RSMR is available at Aetrix Electronics and suitable for mobile computing, ultrabook adapter power, and battery-backed VCPU applications requiring stable component supply, long-term lifecycle support, and TI-qualified automotive-grade reliability.
Supply support for TPS51624RSMR 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 designing analog, embedded processing, and power management ICs for industrial, automotive, and computing markets.
The TPS51624RSMR belongs to TI's VR12.6-compliant power controller product line, engineered specifically for high-efficiency, low-noise, and fast-transient CPU core power delivery in thin-and-light mobile platforms.
FAQ
What is the primary function of the TPS51624RSMR in a CPU power system?
The TPS51624RSMR serves as a driverless, 2-phase step-down controller that regulates the VCPU rail in accordance with Intel® VR12.6 specifications. It interprets SVID commands from the CPU, generates PWM signals for external power stages, and manages PS3/PS4 low-power states. The TPS51624RSMR integrates critical functions including voltage positioning, overshoot/undershoot reduction, and AutoBalance phase balancing-enabling precise, efficient, and responsive core power delivery without external gate drivers.
Does the TPS51624RSMR support both single-phase and dual-phase configurations?
Yes, the TPS51624RSMR supports configurable 1-phase or 2-phase operation. In single-phase mode, it operates in either continuous conduction mode (CCM) for heavy loads or discontinuous conduction mode (DCM) to maximize light-load efficiency. In 2-phase mode, its patented AutoBalance algorithm continuously monitors and equalizes current between phases, maintaining ≤±5% imbalance without external compensation components. This flexibility allows designers to optimize performance across varying power demands using the same TPS51624RSMR footprint.
What package type and thermal requirements apply to the TPS51624RSMR?
The TPS51624RSMR uses a 4 mm × 4 mm, 32-pin VQFN package (RSM) with an exposed thermal pad. Per TI's design guidelines, this pad must be soldered to a dedicated PCB copper area connected to internal ground planes via multiple thermal vias. The device operates from –40°C to 105°C ambient, and proper thermal pad implementation is mandatory to sustain 105°C junction temperature under full load. The RSM package is RoHS-compliant, moisture-sensitivity level 2, and rated for peak reflow at 260°C.
How does the TPS51624RSMR implement VR12.6 serial VID compliance?
The TPS51624RSMR implements full VR12.6 SVID compliance through dedicated SVID_CLK and SVID_DATA pins supporting the 2-wire serial interface. It accepts SVID addresses 0–7, enabling multi-controller systems, and executes all required VR12.6 commands-including voltage setpoint changes, PS3/PS4 entry/exit, and VR_HOT assertion. The TPS51624RSMR also provides VR_READY (PGOOD), ALERT, and VR_HOT status outputs per specification, and supports digital current monitoring and adjustable voltage positioning to satisfy complete VR12.6 mobile feature set requirements.
Can the TPS51624RSMR be used with DrMOS power stages?
Yes, the TPS51624RSMR is explicitly designed to interface with DrMOS power stages, as confirmed in TI's datasheet and application notes. Its driverless PWM outputs are compatible with standard DrMOS input logic levels and timing requirements. The controller supports selectable current limits, OSR/USR tuning, and phase balancing-all critical for stable DrMOS operation. TI validates the TPS51624RSMR with selected Power Stage™ and DrMOS products to ensure optimal efficiency, thermal performance, and transient response in production VCPU designs.
TPS51624RSMR 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 VR12.6
- Voltage - Input:
- 4.5V ~ 28V
- Number of Outputs:
- 1
- Voltage - Output:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VQFN (4x4)
TPS51624RSMR FAQ
1.How can I place an order for TPS51624RSMR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS51624RSMR 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 TPS51624RSMR reliable?
The price and inventory of TPS51624RSMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS51624RSMR is usually 5 days.
3.What payment methods are accepted for TPS51624RSMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS51624RSMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS51624RSMR?
TPS51624RSMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS51624RSMR 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 TPS51624RSMR?
For technical support, including TPS51624RSMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS51624RSMR requirements.
6.How does Aetrix verify that TPS51624RSMR is sourced from the original manufacturer or authorized distributors?
All TPS51624RSMR 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 TPS51624RSMR meets industry standards.
7.What is the process for return or replacement of TPS51624RSMR?
All TPS51624RSMR units undergo pre-shipment inspection (PSI). If there is an issue with TPS51624RSMR, 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 TPS51624RSMR part is unused and in its original packaging.
Return procedure for TPS51624RSMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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