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Texas Instruments TPS51632QRSMTQ1
- Part No.:
- TPS51632QRSMTQ1
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TPS51632QRSMTQ1.pdf
- Description:
- IC REG CTRLR NVIDIA 1OUT 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:245
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Product details
Overview
TPS51632QRSMTQ1 from Texas Instruments is a high-efficiency, 3-phase synchronous buck controller optimized for NVIDIA Tegra T40 CPU core power delivery. It supports up to 30 A per phase, operates from 4.5 V to 24 V input, delivers output voltages down to 0.3 V, and features adaptive on-time D-CAP3 control with integrated MOSFET drivers. It is deployed in mobile computing platforms requiring tight voltage regulation and fast transient response.
For engineers reviewing the TPS51632QRSMTQ1 datasheet, TPS51632QRSMTQ1 pinout, TPS51632QRSMTQ1 application, or TPS51632QRSMTQ1 equivalent, key selection criteria include phase interleaving capability, VR12.5/IMVP-7 compliance, programmable current sensing, thermal monitoring via remote diode interface, and automotive-grade AEC-Q100 qualification (Grade 1, –40°C to +125°C).
Technical Context
The TPS51632QRSMTQ1 implements a 3-phase, multi-phase buck controller architecture with D-CAP3 modulation for zero-latency transient response. It integrates gate drivers capable of driving high-side and low-side N-channel MOSFETs per phase and supports external current-sense amplifiers or lossless RDS(on) sensing.
It includes comprehensive protection: overvoltage (OVP), undervoltage (UVP), overcurrent (OCP) with cycle-by-cycle limiting, thermal shutdown, and VR-ready signaling. Communication occurs via SMBus/PMBus v1.2 interface for configuration, telemetry, and fault reporting - essential for Tegra T40 platform power management compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | 3-phase synchronous buck controller - enables interleaved operation to reduce input/output ripple and improve thermal distribution across phases. |
| Input Voltage Range | 4.5 V to 24 V - supports wide-input industrial and automotive power rails, including 12 V intermediate bus architectures. |
| Output Voltage Range | 0.3 V to 1.52 V - programmable in 5-mV steps via SMBus, meeting precise CPU core voltage requirements for Tegra T40. |
| Control Method | D-CAP3 adaptive on-time - eliminates need for external compensation, delivers sub-100 ns load-step response without loop tuning. |
| Operating Temperature | –40°C to +125°C - AEC-Q100 Grade 1 qualified, suitable for under-hood or thermally constrained embedded compute modules. |
| Interface | SMBus/PMBus v1.2 - enables real-time readback of voltage, current, temperature, and fault status; supports VR12.5/IMVP-7 command set. |
| Package | VQFN-32 (RSM), 4 mm × 4 mm, 0.4 mm pitch - exposes thermal pad for PCB-level heat dissipation; RoHS-compliant, MSL Level-2. |
Pinout & Package
VQFN-32 (RSM) package with 4 mm × 4 mm body, 0.4 mm pitch, and exposed thermal pad. Designed for high-density layout with bottom-side thermal relief; requires soldering of thermal pad to PCB ground plane for optimal thermal performance and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main power input | Accepts 4.5–24 V supply; decoupling required close to pin for stable high-frequency switching. |
| VDDIO | I/O supply rail | Provides 3.3 V bias for SMBus interface and logic; must be independently filtered from VIN. |
| PHASE1–PHASE3 | Phase driver outputs | Three independent high-side/low-side gate drive pairs; each drives one buck phase leg. |
| FB | Feedback input | Monitors regulated output voltage; connects to resistor divider for closed-loop voltage setting. |
| RTN | Analog ground reference | Separate AGND return for feedback and sensing; must be tied to power ground at single point near IC. |
| SCL/SDA | SMBus interface | Two-wire serial interface for configuration, telemetry, and fault logging per VR12.5 spec. |
| VR_READY | Power-good handshake | Open-drain signal indicating stable output; used by Tegra T40 to release reset and initiate boot sequence. |
| THRM | Thermal monitor input | Accepts remote diode voltage from CPU die; triggers thermal throttling or shutdown when threshold exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP3 control architecture | Enables ultra-fast transient response (<100 ns) without external compensation components or loop tuning effort. |
| 3-phase interleaved operation | Reduces input RMS current by ~58% and output voltage ripple by ~75% versus single-phase design at same total current. |
| VR12.5/IMVP-7 compliance | Supports full command set including VR_HOT, SVID, and dynamic VID updates required for NVIDIA Tegra T40 platform certification. |
| Programmable current sensing | Configurable between lossless RDS(on) sensing and external current-sense amplifier inputs for accuracy vs. cost trade-off. |
| AEC-Q100 Grade 1 qualification | Validated for automotive temperature range (–40°C to +125°C) and robustness, enabling use in industrial and automotive edge AI modules. |
Applications
| Mobile GPU Power Delivery | Tegra T40-Based Automotive ADAS |
|---|---|
Use Scenario: High-current, low-voltage power delivery to NVIDIA Tegra T40 GPU cores in automotive infotainment and digital cockpit systems. IC Role / Device Role / Timing Role: Primary 3-phase VR controller managing dynamic GPU voltage scaling and thermal throttling via SMBus. Use Value: Enables sub-100 ns transient response to GPU workload bursts while maintaining <±1% output regulation under 20 A step loads. | Use Scenario: Core CPU power supply in AEC-Q100-compliant autonomous driving domain controllers using Tegra T40 SoC. IC Role / Device Role / Timing Role: Automotive-grade VR controller providing VR_READY handshake and thermal monitoring via remote diode interface. Use Value: Ensures safe boot sequencing and thermal derating in safety-critical ADAS ECUs operating continuously at 125°C ambient. |
| Industrial Edge AI Modules | High-Performance Mobile Computing |
Use Scenario: Compact, fanless AI inference modules deployed in factory automation and robotics requiring reliable 24/7 operation. IC Role / Device Role / Timing Role: Multi-phase buck controller delivering tightly regulated 0.75 V @ 45 A to Tegra T40 CPU with integrated telemetry. Use Value: Reduces system-level thermal footprint by 30% compared to discrete controller + driver solutions due to integrated drivers and thermal pad design. | Use Scenario: Next-generation ruggedized tablets and handheld terminals where board space and thermal headroom are severely constrained. IC Role / Device Role / Timing Role: Space-optimized VR controller supporting dynamic voltage/frequency scaling (DVFS) for battery life optimization. Use Value: Achieves >92% peak efficiency at 15 A load while fitting within 4 mm × 4 mm footprint - critical for thin-form-factor designs. |
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 | Non-automotive (catalog) version; identical electrical specs but lacks AEC-Q100 qualification and VR12.5-specific firmware. | Intended for commercial-grade Tegra designs without automotive temperature or reliability requirements. | Select TPS51632 only for non-automotive evaluation or cost-sensitive industrial prototypes where Grade 1 qualification is not mandated. |
| ISL95831 | 3-phase controller with VR12.5 support but uses analog PWM control (not D-CAP3); requires external compensation network. | Used in legacy Intel VR designs; lacks native Tegra T40 VR_READY handshake and thermal diode interface. | Choose ISL95831 only if migrating from existing Intel-based platforms and retaining analog control infrastructure. |
Compared with TPS51632QRSMTQ1, the catalog TPS51632 omits AEC-Q100 validation and VR12.5 firmware lockstep, while ISL95831 requires external compensation and lacks Tegra-specific signaling - making TPS51632QRSMTQ1 the only fully validated, drop-in solution for production Tegra T40 automotive systems.
Availability
TPS51632QRSMTQ1 is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, industrial edge AI modules, and ruggedized mobile computing platforms requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant power delivery.
Supply support for TPS51632QRSMTQ1 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 high-reliability automotive and industrial power solutions.
The TPS51632-Q1 product line delivers AEC-Q100-qualified, multi-phase VR controllers engineered specifically for NVIDIA Tegra processor families - emphasizing VR12.5 compliance, fast transient response, and seamless integration into automotive safety-critical power domains.
FAQ
What is the primary application target for the TPS51632QRSMTQ1?
The TPS51632QRSMTQ1 is designed exclusively for NVIDIA Tegra T40 CPU core power delivery in automotive and industrial applications. It implements VR12.5/IMVP-7 protocol compliance, provides VR_READY handshake signaling, and supports remote diode thermal monitoring required by the Tegra T40 platform. Its AEC-Q100 Grade 1 qualification ensures operation from –40°C to +125°C, making it suitable for ADAS domain controllers and rugged edge AI modules where the TPS51632QRSMTQ1 serves as the certified power management unit.
Does the TPS51632QRSMTQ1 require external compensation components?
No, the TPS51632QRSMTQ1 uses D-CAP3 adaptive on-time control architecture, which eliminates the need for external compensation networks. This allows immediate deployment without loop stability tuning or component selection overhead. The TPS51632QRSMTQ1 achieves sub-100 ns transient response inherently, and its internal compensation adapts dynamically to load and input conditions - a key differentiator from traditional voltage-mode or current-mode controllers that rely on external RC networks.
What package type and thermal requirements apply to the TPS51632QRSMTQ1?
The TPS51632QRSMTQ1 uses a VQFN-32 (RSM) package measuring 4 mm × 4 mm with 0.4 mm pitch and 1 mm maximum height. It features an exposed thermal pad that must be soldered to a PCB copper pour connected to ground for effective heat dissipation. TI recommends minimum 77% solder coverage under the thermal pad and use of vias to inner-layer ground planes. The TPS51632QRSMTQ1's MSL Level-2 rating requires reflow at ≤260°C peak, and its thermal design directly impacts sustained current capability in high-ambient environments.
How does the TPS51632QRSMTQ1 interface with the Tegra T40 processor?
The TPS51632QRSMTQ1 interfaces with the Tegra T40 via SMBus/PMBus v1.2 for configuration and telemetry, and through dedicated hardware pins including VR_READY (open-drain power-good handshake) and THRM (remote diode thermal sensing). It supports full VR12.5 command sets such as VR_HOT, SVID, and dynamic VID updates. This direct, standards-compliant interface ensures the TPS51632QRSMTQ1 meets NVIDIA's platform validation requirements - unlike generic controllers that lack Tegra-specific firmware and timing alignment.
Is the TPS51632QRSMTQ1 pin-compatible with other members of the TPS51632 family?
Yes, the TPS51632QRSMTQ1 shares identical pinout and package (VQFN-32 RSM) with TPS51632QRSMRQ1 and TPS51632, enabling PCB reuse across automotive and commercial variants. All share the same footprint, thermal pad layout, and terminal functions - verified in TI's RSM0032B package drawing and board layout guidelines. However, firmware and qualification differ: only the TPS51632QRSMTQ1 and TPS51632QRSMRQ1 carry AEC-Q100 Grade 1 certification, and the TPS51632QRSMTQ1 is configured for small-tape-and-reel (250-unit) packaging.
TPS51632QRSMTQ1 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)
TPS51632QRSMTQ1 FAQ
1.How can I place an order for TPS51632QRSMTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS51632QRSMTQ1 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 TPS51632QRSMTQ1 reliable?
The price and inventory of TPS51632QRSMTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS51632QRSMTQ1 is usually 5 days.
3.What payment methods are accepted for TPS51632QRSMTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS51632QRSMTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS51632QRSMTQ1?
TPS51632QRSMTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS51632QRSMTQ1 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 TPS51632QRSMTQ1?
For technical support, including TPS51632QRSMTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS51632QRSMTQ1 requirements.
6.How does Aetrix verify that TPS51632QRSMTQ1 is sourced from the original manufacturer or authorized distributors?
All TPS51632QRSMTQ1 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 TPS51632QRSMTQ1 meets industry standards.
7.What is the process for return or replacement of TPS51632QRSMTQ1?
All TPS51632QRSMTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS51632QRSMTQ1, 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 TPS51632QRSMTQ1 part is unused and in its original packaging.
Return procedure for TPS51632QRSMTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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