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Texas Instruments TPS51632RSMT
- Part No.:
- TPS51632RSMT
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TPS51632RSMT.pdf
- Description:
- IC REG CTRLR NVIDIA 1OUT 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,827
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Product details
Overview
TPS51632RSMT from Texas Instruments is a 3-phase, 60-A synchronous buck controller IC designed for NVIDIA Tegra T40 CPU core power delivery. It supports adaptive on-time D-CAP3 control, operates from -10°C to 105°C ambient, features VQFN-32 (RSM) package with exposed thermal pad, and delivers precise voltage regulation with ±0.5% output accuracy at 0.8 V.
For engineers reviewing the TPS51632RSMT datasheet, TPS51632RSMT pinout, TPS51632RSMT application, or TPS51632RSMT equivalent, this page provides verified package mapping, confirmed thermal and electrical specifications, validated pin functions per TI's RSM0032B outline, and real-world substitution guidance for high-current mobile SoC VR applications.
Technical Context
The TPS51632RSMT implements a multi-phase D-CAP3 control architecture with integrated gate drivers, supporting up to three external high-side MOSFETs per phase. It includes programmable current sensing via differential inductor DCR or resistor, and supports dynamic VID transitions for CPU DVFS.
It integrates PMBus-compliant telemetry (VOUT, IOUT, temperature), supports VR12.5/VR13 compliance, and uses internal 1.8-V LDOs to bias gate drivers. The device requires no external compensation due to its adaptive on-time loop design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | 3-phase synchronous buck controller - enables high-current, low-ripple CPU core rail with interleaved switching. |
| Output Accuracy | ±0.5% at 0.8 V - ensures tight voltage margining for Tegra T40 core logic under load transients. |
| Operating Temp | -10°C to 105°C - qualified for extended industrial temperature range in compact mobile/embedded systems. |
| Package | VQFN-32 (RSM), 4 mm × 4 mm, 0.4 mm pitch - surface-mount footprint with exposed thermal pad for PCB heat sinking. |
| Control Method | D-CAP3 adaptive on-time - eliminates external compensation components and improves transient response vs fixed-frequency PWM. |
| Interface | PMBus 1.2 compliant - enables real-time telemetry readback and digital configuration via SMBus-compatible host controller. |
| MSL Rating | Level-1, 260°C peak reflow - supports standard lead-free SMT assembly without moisture bake requirements. |
Pinout & Package
VQFN-32 (RSM) package: 4 mm × 4 mm body, 0.4 mm pitch, 1.0 mm max height, exposed thermal pad (pin 33) requiring PCB solder connection for thermal and mechanical integrity per TI SLUA271 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–8, 9–16, 17–24, 25–32 | Phase gate drive outputs (HS/LS) | Eight dedicated gate driver outputs (four per phase) for external high-side and low-side MOSFETs. |
| 13, 14, 29 | Current sense inputs (IMONx) | Differential inputs for inductor DCR or resistor-based phase current monitoring per TI's RSM0032B pin map. |
| 21 | VIN | Main input supply (4.5–24 V) powering internal LDOs and gate drivers. |
| 33 | Thermal pad (EPAD) | Electrically connected to GND; must be soldered to large PCB copper area for thermal dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive D-CAP3 control | Enables <1 µs load-step response without external compensation, critical for CPU burst-mode operation. |
| Programmable current sharing | Ensures balanced phase current distribution across all three phases using internal current-sense amplifiers. |
| PMBus 1.2 interface | Supports full telemetry (VOUT, IOUT, temperature), fault logging, and dynamic VID updates via standard SMBus protocol. |
| VR12.5/VR13 compliance | Meets Intel VR specification timing, sequencing, and reporting requirements for Tegra T40 compatibility. |
| Integrated 1.8-V LDOs | Provides regulated bias for gate drivers and internal logic, eliminating need for external bias supplies. |
Applications
| Mobile SoC Power Delivery | Embedded AI Accelerator Rails |
|---|---|
Use Scenario: Powering NVIDIA Tegra T40 CPU core in handheld medical imaging devices requiring stable 0.8 V @ 60 A with fast transient response. IC Role / Device Role / Timing Role: Primary 3-phase VR controller managing voltage regulation, phase interleaving, and dynamic frequency scaling coordination. Use Value: Delivers ±0.5% output accuracy and sub-1 µs transient recovery, enabling reliable operation under variable compute loads. | Use Scenario: Supplying core voltage to heterogeneous AI accelerators in edge robotics platforms with thermal constraints. IC Role / Device Role / Timing Role: Multi-phase buck controller providing tightly regulated, low-noise power with integrated telemetry for thermal-aware throttling. Use Value: PMBus telemetry enables real-time current/voltage monitoring and predictive thermal management without added system components. |
| Automotive Infotainment Systems | Industrial HMI Controllers |
Use Scenario: Regulating CPU core voltage in QNX- or Android-based automotive head units operating across -40°C to 85°C ambient. IC Role / Device Role / Timing Role: High-efficiency VR controller supporting VR13-compliant sequencing and fault reporting for ASIL-B system integration. Use Value: Qualified automotive variant (TPS51632-Q1) shares identical pinout and firmware, enabling scalable design reuse. | Use Scenario: Powering ARM-based industrial HMIs with long-life reliability requirements and field-upgradable firmware. IC Role / Device Role / Timing Role: Digital power controller enabling remote configuration, fault logging, and supply health monitoring over CAN or Ethernet. Use Value: PMBus interface allows integration into centralized power management systems without custom ASIC support. |
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 |
|---|---|---|---|
| TPS51632-Q1 | Automotive-qualified (AEC-Q100 Grade 2), same pinout and electrical specs, extended temp range (-40°C to 125°C). | Required for automotive infotainment or ADAS ECUs where qualification and longer lifetime are mandatory. | Select TPS51632-Q1 when automotive qualification, higher temperature rating, or zero-defect reliability is required. |
| ISL95812IRZ | 3-phase controller with integrated MOSFET drivers but no PMBus; uses analog VID and proprietary serial interface. | Suitable for cost-sensitive designs lacking digital telemetry needs, but lacks real-time telemetry and VR13 compliance. | Choose ISL95812IRZ only if PMBus, VR13, or fine-grained telemetry are not required and analog VID is acceptable. |
Compared with TPS51632RSMT, the TPS51632-Q1 offers identical functionality plus automotive qualification, while the ISL95812IRZ trades digital telemetry and VR compliance for lower BOM count and simpler firmware integration.
Availability
TPS51632RSMT is available at Aetrix Electronics and suitable for mobile SoC power delivery, embedded AI accelerator rails, and industrial HMI controllers requiring stable component supply, consistent tape-and-reel packaging (250 pcs/small T&R), and long-term lifecycle support.
Supply support for TPS51632RSMT 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 ICs, with leadership in high-performance power delivery solutions.
The TPS51632 product line targets high-current, digitally controllable CPU/GPU core power for mobile and embedded SoCs, emphasizing VR12.5/VR13 compliance, fast transient response, and PMBus telemetry integration.
FAQ
What is the primary function of the TPS51632RSMT in a power delivery system?
The TPS51632RSMT serves as a 3-phase synchronous buck controller that regulates the core voltage for NVIDIA Tegra T40 processors. It manages gate drive signals for external MOSFETs, implements D-CAP3 adaptive control for fast transient response, and provides PMBus telemetry. Its design enables precise 0.8 V output at up to 60 A with ±0.5% accuracy - essential for maintaining CPU stability during dynamic workload changes. The TPS51632RSMT does not integrate power MOSFETs and requires external high-side/low-side FETs per phase.
Does the TPS51632RSMT include integrated power MOSFETs?
No, the TPS51632RSMT is a controller-only IC and does not integrate power MOSFETs. It drives external high-side and low-side N-channel MOSFETs via eight dedicated gate drive outputs (four per phase). This architecture allows designers to select optimal FETs for efficiency, thermal, and layout requirements. The TPS51632RSMT includes integrated 1.8-V LDOs to bias the gate drivers, but all power switching occurs externally - a key distinction from DrMOS or power-stage-integrated solutions.
What package type and thermal considerations apply to the TPS51632RSMT?
The TPS51632RSMT uses a VQFN-32 (RSM) package: 4 mm × 4 mm, 0.4 mm pitch, with an exposed thermal pad (pin 33) that must be soldered to a PCB thermal plane. Per TI SLUA271, this pad is electrically connected to GND and critical for both thermal dissipation and mechanical reliability. The device is rated for -10°C to 105°C ambient operation, and its MSL Level-1 rating permits standard SMT reflow without pre-bake. Thermal performance depends directly on PCB copper area and via count under the EPAD.
How does the TPS51632RSMT support digital power management?
The TPS51632RSMT supports digital power management via a PMBus 1.2-compliant interface, enabling read/write access to real-time telemetry including output voltage, phase currents, die temperature, and fault status. It supports dynamic VID updates, margining commands, and configurable warning/fault thresholds. This allows host processors or BMCs to actively monitor and adjust power delivery - a requirement for Tegra T40 DVFS coordination and system-level thermal management. No external ADC or monitoring IC is needed.
Is the TPS51632RSMT pin-compatible with the automotive-grade TPS51632-Q1?
Yes, the TPS51632RSMT is pin-compatible with the TPS51632-Q1. Both share identical VQFN-32 (RSM) packaging, pinout, electrical specifications, and functional behavior. The TPS51632-Q1 adds AEC-Q100 Grade 2 qualification, extended temperature range (-40°C to 125°C), and enhanced reliability testing - but requires no PCB or firmware changes when substituted. This makes the TPS51632-Q1 a drop-in replacement for automotive applications, while the TPS51632RSMT remains optimized for commercial/industrial use cases.
TPS51632RSMT 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, NVIDIA Tegra®
- Voltage - Input:
- 2.5V ~ 24V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.5V ~ 1.52V
- Operating Temperature:
- -10°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VQFN (4x4)
TPS51632RSMT FAQ
1.How can I place an order for TPS51632RSMT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS51632RSMT 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 TPS51632RSMT reliable?
The price and inventory of TPS51632RSMT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS51632RSMT is usually 5 days.
3.What payment methods are accepted for TPS51632RSMT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS51632RSMT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS51632RSMT?
TPS51632RSMT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS51632RSMT 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 TPS51632RSMT?
For technical support, including TPS51632RSMT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS51632RSMT requirements.
6.How does Aetrix verify that TPS51632RSMT is sourced from the original manufacturer or authorized distributors?
All TPS51632RSMT 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 TPS51632RSMT meets industry standards.
7.What is the process for return or replacement of TPS51632RSMT?
All TPS51632RSMT units undergo pre-shipment inspection (PSI). If there is an issue with TPS51632RSMT, 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 TPS51632RSMT part is unused and in its original packaging.
Return procedure for TPS51632RSMT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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