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Texas Instruments TPS53832RWZR
- Part No.:
- TPS53832RWZR
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 35-QFN
- Datasheet:
-
TPS53832RWZR.pdf
- Description:
- PMIC FOR DDR5 SERVER DIMMS
- Quantity:
- Payment:
- Shipping:
Inventory:2,877
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Product details
Overview
TPS53832RWZR from Texas Instruments is a 35-pin VQFN-HR digital step-down converter optimized for DDR5 on-DIMM power delivery, delivering three regulated outputs (VDD=1.1V/7A dual-phase, VDDQ=1.1V/3.5A, VPP=1.8V/3.5A) with D-CAP+™ control, I²C/I³C telemetry, and differential remote sensing across all rails.
For engineers reviewing the TPS53832RWZR datasheet, TPS53832RWZR pinout, TPS53832RWZR application, or TPS53832RWZR equivalent, key selection criteria include DDR5-specific rail sequencing, per-phase current limiting, programmable switching frequency (500 kHz–1.375 MHz), thermal operation up to +105°C, and black-box persistent register logging for field diagnostics.
Technical Context
The TPS53832RWZR integrates three synchronous buck controllers in a single die with independent D-CAP+™ control loops per output, enabling fast transient response without external compensation. It supports configurable 3-output (7A/3.5A/3.5A) or 4-output (3.5A × 4) modes via pin strapping or I²C/I³C commands.
Differential remote sensing is implemented on VDD, VDDQ, and VPP rails to reject PCB IR drop, while internal loop compensation and cycle-by-cycle per-phase current limiting ensure stability and reliability under dynamic DDR5 load profiles. Input voltage range is fixed at 4.5 V to 15 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 15 V - supports wide-range server mid-rail supplies without pre-regulation. |
| Output Configurations | 3-output mode: VDD (1.1 V / 7 A dual-phase), VDDQ (1.1 V / 3.5 A), VPP (1.8 V / 3.5 A) - matches JEDEC DDR5 DIMM power architecture. |
| Switching Frequency | 500 kHz to 1.375 MHz - adjustable via I²C/I³C to optimize efficiency vs. EMI for dense DIMM layouts. |
| Telemetry Interface | I²C and I³C - enables real-time readback of voltage, current, temperature, power, and fault status without additional ADCs or sensors. |
| Operating Temperature | –40°C to +105°C - qualified for industrial-grade DIMM module environments near memory banks. |
| Protection Features | Overcurrent (per-phase cycle-by-cycle), overvoltage, undervoltage, overtemperature - autonomous shutdown with latch or retry behavior per JEDEC requirements. |
| Persistent Register | Black-box logging - stores last 16 fault events with timestamps and rail-specific error codes for post-failure analysis. |
Pinout & Package
TPS53832RWZR is housed in a thermally enhanced 5.0 mm × 5.0 mm, 35-pin VQFN-HR (RWZ) package with exposed PowerPad™ for low-θJA thermal performance. Pin 1 orientation is quadrant Q1 per tape-and-reel specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Primary input supply | Accepts 4.5–15 V; connects to bulk capacitor bank feeding all three buck stages. |
| VDD, VDDQ, VPP Sense+ | Differential remote sense positive | Connects directly to DRAM VDD/VDDQ/VPP pins to compensate for PCB trace resistance. |
| VDD, VDDQ, VPP Sense– | Differential remote sense negative | Return path for remote sensing; routed adjacent to Sense+ for noise immunity. |
| SCL, SDA, SCL3, SDA3 | I²C/I³C interface | Supports dual-bus telemetry: legacy I²C (up to 1 MHz) and I³C (up to 12.5 MHz) for high-speed monitoring. |
| EN_VDD, EN_VDDQ, EN_VPP | Output enable controls | Individual hardware enables allow precise power-up sequencing per JEDEC DDR5 spec. |
| PGOOD_VDD, PGOOD_VDDQ, PGOOD_VPP | Power-good status outputs | Open-drain signals indicate regulation within ±3% tolerance; used for system-level power sequencing handshaking. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP+™ control topology | Eliminates need for external compensation components and delivers <10 µs load-step response for DDR5 burst currents. |
| Dual-phase VDD configuration | Enables 7 A total current with interleaved operation, reducing input/output ripple and thermal concentration. |
| Differential remote sensing (x3) | Compensates for up to 50 mΩ PCB trace resistance per rail, ensuring ±1% output accuracy at DRAM pins. |
| Persistent black-box register | Retains last 16 fault records including timestamp, rail ID, fault type, and measured parameter values for root-cause analysis. |
| Programmable internal loop compensation | Allows fine-tuning of phase margin and bandwidth via I²C/I³C without changing external components. |
Applications
| DDR5 Server DIMMs | AI Accelerator Memory Modules |
|---|---|
|
Use Scenario: Powering DDR5 DRAM chips on registered DIMMs in cloud-scale servers where tight voltage tolerance and fast transient response are mandatory. IC Role / Device Role / Timing Role: Primary triple-rail power management IC managing VDD, VDDQ, and VPP with JEDEC-compliant sequencing and telemetry. Use Value: Enables reliable 6400 MT/s operation by maintaining VDD/VDDQ within ±30 mV during 5-A/ns load steps and logging faults for firmware-triggered DIMM retirement. |
Use Scenario: Supplying high-bandwidth memory on GPU/AI accelerator modules where thermal density and telemetry-driven health monitoring are critical. IC Role / Device Role / Timing Role: Integrated power controller with I³C telemetry providing real-time rail current and temperature data to host SoC for dynamic power capping. Use Value: Reduces need for discrete current sensors and thermal diodes, cutting BOM cost by ~$0.42 per module while enabling predictive thermal throttling. |
| Enterprise SSD Memory Buffers | High-Performance Computing (HPC) Memory Subsystems |
|
Use Scenario: Powering DDR5-based memory buffers in NVMe SSD controllers requiring robust overcurrent protection and fault logging. IC Role / Device Role / Timing Role: Fault-resilient power IC with per-phase cycle-by-cycle current limit and persistent register for field failure forensics. Use Value: Prevents catastrophic buffer failure during write-amplification surges and provides timestamped fault records for SSD firmware diagnostics. |
Use Scenario: Delivering tightly regulated power to DDR5 stacks in liquid-cooled HPC nodes where ambient temperature exceeds 85°C. IC Role / Device Role / Timing Role: Industrial-grade power converter rated for –40°C to +105°C operation with thermal derating curves published in datasheet. Use Value: Maintains full 7 A VDD capability at 105°C ambient via PowerPad™ thermal design, eliminating need for auxiliary cooling on memory PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DDR5 on-DIMM power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL99390HRZ-T | Single-output 7 A VR for VDD only; no integrated VDDQ/VPP support; requires two additional controllers for full DDR5 rail set. | Limited to VDD-only DIMM designs; lacks differential sensing on VDDQ/VPP and I³C telemetry. | Select when only VDD regulation is needed and system uses discrete VDDQ/VPP solutions for cost segmentation. |
| MP2965EK-LF-P | 3-output digital VR with PMBus interface only (no I³C); max 5 A per rail; no persistent black-box register. | Compatible with legacy PMBus-based BMCs but lacks I³C speed and fault logging depth required for next-gen telemetry. | Choose for systems already standardized on PMBus infrastructure and where black-box logging is not mandated. |
Compared with ISL99390HRZ-T and MP2965EK-LF-P, the TPS53832RWZR uniquely integrates full DDR5 rail support, I³C telemetry bandwidth, and persistent fault logging in a single 35-pin QFN-reducing board area by 38% and enabling firmware-driven memory health analytics not possible with multi-chip alternatives.
Availability
TPS53832RWZR is available at Aetrix Electronics and suitable for DDR5 server DIMMs, AI accelerator memory modules, enterprise SSD memory buffers, and high-performance computing memory subsystems requiring stable component supply, long-term lifecycle assurance, and full production traceability.
Supply support for TPS53832RWZR 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 leader specializing in analog, embedded processing, and power management technologies, with over 90 years of innovation in high-reliability electronic systems.
The TPS53832RWZR belongs to TI's DDR5 Power Management IC product line, engineered specifically to meet JEDEC DDR5 on-DIMM power architecture requirements-including triple-rail sequencing, differential sensing, and telemetry-enabled health monitoring.
FAQ
What is the maximum supported output current for each rail on the TPS53832RWZR?
The TPS53832RWZR supports up to 7 A on VDD in dual-phase mode, and 3.5 A each on VDDQ and VPP in 3-output configuration. In 4-output mode, all four rails (VDD1, VDD2, VDDQ, VPP) deliver 3.5 A. Current capability is confirmed in the datasheet's Electrical Characteristics table and validated under thermal limits at +105°C ambient.
Does the TPS53832RWZR support both I²C and I³C interfaces simultaneously?
Yes, the TPS53832RWZR features dedicated SCL/SDA and SCL3/SDA3 pins enabling concurrent I²C (up to 1 MHz) and I³C (up to 12.5 MHz) operation. This allows legacy BMCs to use I²C while next-gen platforms leverage I³C for faster telemetry polling without bus contention.
How does the differential remote sensing work on the TPS53832RWZR?
The TPS53832RWZR implements independent differential sense pairs for VDD, VDDQ, and VPP - each consisting of Sense+ and Sense– terminals routed directly to the DRAM power pins. This compensates for voltage drop across PCB traces, ensuring regulation accuracy remains within ±1% at the load point even with 50 mΩ trace resistance.
What protection features are built into the TPS53832RWZR?
The TPS53832RWZR includes per-phase cycle-by-cycle overcurrent protection, output overvoltage and undervoltage lockout, and junction overtemperature shutdown with hysteresis. All protections are hardware-asserted and logged in the persistent black-box register, enabling deterministic fault recovery in DDR5 systems.
Is the TPS53832RWZR pin-compatible with earlier TI DDR4 power converters like the TPS536xx series?
No, the TPS53832RWZR is not pin-compatible with TPS536xx devices. It uses a new 35-pin VQFN-HR (RWZ) footprint with different pin assignments for DDR5-specific functions including I³C, additional enable/status signals, and expanded sense routing - requiring dedicated PCB layout.
TPS53832RWZR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 35-QFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Converter, DDR
- Voltage - Input:
- 4.5V ~ 15V
- Number of Outputs:
- 3
- Voltage - Output:
- 1.1V, 1.1V, 1.8V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 35-VQFN-HR (5x5)
TPS53832RWZR FAQ
1.How can I place an order for TPS53832RWZR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS53832RWZR 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 TPS53832RWZR reliable?
The price and inventory of TPS53832RWZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS53832RWZR is usually 5 days.
3.What payment methods are accepted for TPS53832RWZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS53832RWZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS53832RWZR?
TPS53832RWZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS53832RWZR 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 TPS53832RWZR?
For technical support, including TPS53832RWZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS53832RWZR requirements.
6.How does Aetrix verify that TPS53832RWZR is sourced from the original manufacturer or authorized distributors?
All TPS53832RWZR 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 TPS53832RWZR meets industry standards.
7.What is the process for return or replacement of TPS53832RWZR?
All TPS53832RWZR units undergo pre-shipment inspection (PSI). If there is an issue with TPS53832RWZR, 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 TPS53832RWZR part is unused and in its original packaging.
Return procedure for TPS53832RWZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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