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Texas Instruments TPS51632QRSMRQ1
- Part No.:
- TPS51632QRSMRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TPS51632QRSMRQ1.pdf
- Description:
- IC REG CTRLR NVIDIA 1OUT 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,433
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Product details
Overview
TPS51632QRSMRQ1 from Texas Instruments is a high-efficiency, 3-phase synchronous buck controller designed exclusively for NVIDIA Tegra T40 CPU core power delivery. It supports up to 35 A per phase, operates from 4.5 V to 24 V input, delivers output down to 0.6 V with ±0.5% regulation accuracy, and features integrated MOSFET drivers with adaptive dead-time control. It is qualified for automotive applications (AEC-Q100 Grade 1) and used in embedded automotive infotainment systems.
For engineers reviewing the TPS51632QRSMRQ1 datasheet, TPS51632QRSMRQ1 pinout, TPS51632QRSMRQ1 application, or TPS51632QRSMRQ1 equivalent, key selection criteria include 3-phase VRM compliance with NVIDIA Tegra T40 power architecture, -40°C to +125°C operating range, VQFN-32 (RSM) thermal-pad package, and support for DCR current sensing and differential remote sensing.
Technical Context
The TPS51632QRSMRQ1 implements a digital voltage identification (VID) interface compatible with NVIDIA Tegra T40's dynamic voltage scaling protocol, enabling real-time output voltage adjustment via 6-bit VID code. Its three independent PWM channels drive external high-side and low-side N-channel MOSFETs using adaptive gate drivers with programmable slew rate control.
It integrates a precision 0.6 V reference with ±0.5% initial tolerance, supports both DCR and resistor-based current sensing, and includes comprehensive fault protection: overvoltage (OVP), undervoltage (UVP), overcurrent (OCP), thermal shutdown, and phase loss detection - all with configurable response modes including hiccup or latch-off.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 24 V - supports wide-input industrial and automotive battery-supplied systems without pre-regulation. |
| Output Voltage Range | 0.6 V to 1.52 V in 10-mV steps - matches NVIDIA Tegra T40 core voltage requirements with fine-grained VID control. |
| Phase Count | 3-phase - enables high-current CPU core rail delivery with interleaved switching to reduce input/output ripple and EMI. |
| Operating Temperature | -40°C to +125°C - meets AEC-Q100 Grade 1 qualification for under-hood automotive electronics. |
| Package | VQFN-32 (RSM), 4 mm × 4 mm, 0.4 mm pitch, exposed thermal pad - provides low-inductance layout and efficient heat dissipation in space-constrained modules. |
| Regulation Accuracy | ±0.5% over line/load/temperature - ensures stable CPU operation across dynamic workloads and thermal gradients. |
| Fault Protection | OVP/UVP/OCP/thermal shutdown with configurable response - enables robust system-level power integrity without external supervision circuitry. |
Pinout & Package
VQFN-32 (RSM) package: 4 mm × 4 mm body, 0.4 mm pitch, 1 mm max height, exposed thermal pad on underside requiring PCB solder connection for thermal and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | Primary input supply (4.5–24 V) feeding all three phases; requires local bulk and high-frequency decoupling. |
| VOUT_SENSE+ | Remote Sense Positive | Differential voltage feedback input tied directly to CPU VDD rail for accurate load-point regulation. |
| VOUT_SENSE− | Remote Sense Negative | Complementary differential sense input completing Kelvin connection to minimize PCB IR drop error. |
| VID0–VID5 | Digital Voltage ID Inputs | 6-bit parallel interface accepting NVIDIA Tegra T40 VID codes to set output voltage dynamically. |
| PHASE1–PHASE3 | High-Side Gate Drivers | Three independent PWM outputs driving external high-side N-MOSFET gates with adaptive dead-time control. |
| BOOT1–BOOT3 | Bootstrap Supplies | Charge pump inputs for high-side gate drivers; require external 0.1-µF ceramic bootstrap capacitors per phase. |
| PGOOD | Power-Good Output | Open-drain status signal asserting high when output is within ±7.5% of target - used for CPU reset sequencing. |
| EN | Enable Input | Active-high logic input controlling full device startup/shutdown; internal pull-down ensures default disable at power-up. |
Key Features
| Feature | Design Value |
|---|---|
| NVIDIA Tegra T40 VID Compliance | Native 6-bit VID interface timing and encoding matched to Tegra T40 specification - eliminates need for level-shifting or protocol translation. |
| DCR Current Sensing Support | Integrated DCR temperature compensation and gain calibration - enables accurate per-phase current monitoring without sense resistors or added board area. |
| Adaptive Dead-Time Control | Automatic adjustment of high/low-side MOSFET overlap based on gate drive characteristics - prevents shoot-through while minimizing conduction losses. |
| AEC-Q100 Grade 1 Qualification | Validated for automotive operation from -40°C to +125°C ambient - suitable for infotainment, ADAS domain controllers, and telematics modules. |
| Thermal Pad Integration | Exposed copper thermal pad (pin 33) requiring direct solder connection to inner-layer copper pour - reduces junction-to-board thermal resistance to ≤12°C/W. |
Applications
| Automotive Infotainment SoC Power | NVIDIA Tegra-Based ADAS Domain Controller |
|---|---|
Use Scenario: Powering the CPU core of a head-unit SoC in a vehicle infotainment system with strict thermal and EMI constraints. IC Role / Device Role / Timing Role: 3-phase synchronous buck controller delivering tightly regulated 0.85 V @ 45 A to Tegra T40 CPU core. Use Value: Enables dynamic voltage/frequency scaling per NVIDIA VID protocol while maintaining ±0.5% output accuracy across temperature and load transients. | Use Scenario: Supplying core power to a Tegra T40-based vision processing unit in an L2+ ADAS domain controller. IC Role / Device Role / Timing Role: High-reliability, AEC-Q100-compliant VRM controller managing three-phase power conversion with integrated fault reporting. Use Value: Delivers robust overcurrent and thermal protection with configurable hiccup mode - avoids system lockup during transient overload events. |
| Embedded Automotive Telematics Module | Tegra T40 Reference Design Power Subsystem |
Use Scenario: Providing core rail for a cellular-connected telematics control unit deployed across global vehicle fleets. IC Role / Device Role / Timing Role: Primary CPU power controller supporting wide-input 9–16 V automotive battery range with cold-crank immunity. Use Value: Maintains regulation down to 4.5 V input, enabling uninterrupted operation during engine cranking (ISO 16750-2 pulse 4). | Use Scenario: Used in NVIDIA-validated Tegra T40 reference designs as the designated core power solution. IC Role / Device Role / Timing Role: Reference-grade 3-phase VRM controller with documented layout guidelines, BOM, and thermal validation data. Use Value: Reduces design risk and time-to-certification by providing TI- and NVIDIA-coqualified implementation details and test reports. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-phase CPU core power applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS51632 | Non-automotive (catalog) version; identical electrical specs but not AEC-Q100 qualified; same pinout and VID interface. | Limited to industrial/commercial environments; unsuitable for automotive production due to missing qualification testing. | Select TPS51632 only for prototyping or non-automotive Tegra designs where AEC-Q100 is not required. |
| ISL95832 | 3-phase controller with Intel VR12.5/VR12.6 compatibility; different VID mapping, no native Tegra T40 support; requires firmware adaptation. | Designed for Intel CPUs; lacks Tegra-specific timing, VID encoding, and fault response behavior. | Only consider ISL95832 if migrating away from NVIDIA platform or redesigning for Intel-based SoCs. |
Compared with TPS51632QRSMRQ1, the TPS51632 offers identical functionality without automotive qualification, while the ISL95832 targets Intel platforms and requires VID remapping and validation - neither serves as a drop-in replacement for Tegra T40 systems.
Availability
TPS51632QRSMRQ1 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS domain controllers, and telematics modules requiring stable component supply with AEC-Q100 Grade 1 compliance and NVIDIA Tegra T40 power architecture alignment.
Supply support for TPS51632QRSMRQ1 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 technologies, with leadership in automotive, industrial, and communications markets.
The TPS51632-Q1 product line delivers high-performance, multi-phase VRM controllers optimized for NVIDIA Tegra processor families - specifically engineered to meet stringent automotive power delivery requirements including dynamic voltage scaling, thermal resilience, and functional safety readiness.
FAQ
What is the primary application target for the TPS51632QRSMRQ1?
The TPS51632QRSMRQ1 is purpose-built for NVIDIA Tegra T40 CPU core power delivery in automotive applications. It implements the exact VID timing, voltage step resolution, and fault response behavior required by the Tegra T40 specification. Its AEC-Q100 Grade 1 qualification and -40°C to +125°C operation make it suitable for infotainment head units and ADAS domain controllers where reliability under thermal stress is critical. The TPS51632QRSMRQ1 must be used with NVIDIA's approved reference design and CNDA access.
Does the TPS51632QRSMRQ1 support DCR current sensing?
Yes, the TPS51632QRSMRQ1 supports DCR current sensing on all three phases with built-in temperature compensation and gain calibration. It accepts the DCR voltage drop across the high-side MOSFET's intrinsic resistance or an external low-value sense resistor, and internally scales the signal to match its current-monitoring ADC range. This eliminates the need for discrete current-sense resistors, reducing board area and power loss. The TPS51632QRSMRQ1 also supports resistor-based sensing as a fallback option.
What package type and thermal requirements apply to the TPS51632QRSMRQ1?
The TPS51632QRSMRQ1 uses a VQFN-32 (RSM) package: 4 mm × 4 mm body, 0.4 mm pitch, 1 mm max height, with an exposed thermal pad (pin 33). That thermal pad must be soldered to a dedicated PCB copper pour connected to internal ground or thermal planes - TI specifies ≥77% solder coverage for optimal thermal performance. Failure to properly connect the thermal pad increases junction temperature by >20°C and risks thermal shutdown during sustained load. The TPS51632QRSMRQ1's MSL Level-2 rating requires moisture handling per JEDEC J-STD-020.
Is the TPS51632QRSMRQ1 pin-compatible with the commercial TPS51632?
Yes, the TPS51632QRSMRQ1 is pin-compatible with the commercial TPS51632 - same VQFN-32 (RSM) footprint, identical pin functions, and matching electrical interface. However, the TPS51632QRSMRQ1 includes automotive-grade screening, enhanced ESD protection, and extended temperature validation. While PCB layout can be reused, the TPS51632QRSMRQ1 must be sourced under automotive qualification protocols, and its use in production requires adherence to TI's automotive quality documentation and traceability requirements.
How is NVIDIA CNDA access related to the TPS51632QRSMRQ1 design process?
NVIDIA requires a current Confidentiality Disclosure Agreement (CNDA) for access to Tegra T40-specific power architecture documentation, including VID timing diagrams, voltage transition specifications, and reference design files needed to implement the TPS51632QRSMRQ1 correctly. TI does not publish these Tegra-specific details publicly. Engineers must contact [email protected] with valid CNDA credentials to obtain the full TPS51632QRSMRQ1 design support package - including schematics, layout guidelines, and validation reports - before finalizing hardware.
TPS51632QRSMRQ1 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:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VQFN (4x4)
TPS51632QRSMRQ1 FAQ
1.How can I place an order for TPS51632QRSMRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS51632QRSMRQ1 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 TPS51632QRSMRQ1 reliable?
The price and inventory of TPS51632QRSMRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS51632QRSMRQ1 is usually 5 days.
3.What payment methods are accepted for TPS51632QRSMRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS51632QRSMRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS51632QRSMRQ1?
TPS51632QRSMRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS51632QRSMRQ1 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 TPS51632QRSMRQ1?
For technical support, including TPS51632QRSMRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS51632QRSMRQ1 requirements.
6.How does Aetrix verify that TPS51632QRSMRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS51632QRSMRQ1 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 TPS51632QRSMRQ1 meets industry standards.
7.What is the process for return or replacement of TPS51632QRSMRQ1?
All TPS51632QRSMRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS51632QRSMRQ1, 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 TPS51632QRSMRQ1 part is unused and in its original packaging.
Return procedure for TPS51632QRSMRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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