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Texas Instruments TPS53915RVET
- Part No.:
- TPS53915RVET
- Manufacturer:
- Texas Instruments
- Package:
- 28-VFQFN Exposed Pad
- Datasheet:
-
TPS53915RVET.pdf
- Description:
- IC REG BUCK ADJ 12A 28VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:10,720
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Product details
Overview
TPS53915RVET from Texas Instruments is a 12-A synchronous step-down DC-DC converter with PMBus™ interface, D-CAP3™ adaptive on-time control, and integrated 13.8-mΩ high-side / 5.9-mΩ low-side MOSFETs. It operates from 1.5–18-V input (4.5–25-V VDD bias), delivers 0.6–5.5-V output, and supports FCCM or auto-skip Eco-Mode™ for server POL and FPGA core power applications.
For engineers reviewing the TPS53915RVET datasheet, TPS53915RVET pinout, TPS53915RVET application, or TPS53915RVET equivalent, key selection criteria include its 28-pin QFN package, programmable switching frequency (200–1000 kHz), ±0.5% 600-mV reference, PMBus-based voltage margining/soft-start/fault reporting, and thermal shutdown at 140°C.
Technical Context
The TPS53915RVET implements D-CAP3™ control using emulated current sensing-eliminating external compensation components while enabling ultra-fast load-step response. Its adaptive on-time architecture dynamically adjusts switching frequency across input/output voltage ranges to maintain regulation accuracy under transient conditions.
It integrates a 5-V VREG LDO, bootstrap switch, and PMBus-compliant SCL/SDA interface with programmable address (ADDR), alert (ALERT), and trip (TRIP) pins. The device supports forced continuous conduction mode (FCCM) via MODE pin and features eight selectable switching frequencies via FS<2:0> bits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 12 A continuous - supports high-current digital loads like FPGAs and ASICs without external current sharing. |
| Input Voltage Range | 1.5–18 V VIN + 4.5–25 V VDD bias - enables flexible system-level power architecture with separate bias rail. |
| Output Voltage Range | 0.6–5.5 V - covers core, I/O, and auxiliary rails in computing infrastructure. |
| Reference Accuracy | ±0.5% at 600 mV - ensures tight output regulation critical for low-voltage processor cores. |
| Switching Frequency | 200–1000 kHz (8 settings) - balances efficiency, size, and EMI for space-constrained POL designs. |
| Thermal Shutdown | 140°C threshold with 40°C hysteresis - provides robust overtemperature protection in high-power density layouts. |
| Efficiency Peak | ≥95% at 12 A, VOUT = 1.2 V, VIN = 12 V, fSW = 500 kHz - minimizes thermal load and improves system power density. |
Pinout & Package
The TPS53915RVET is housed in a 3.5 mm × 4.5 mm, 28-pin QFN package with exposed thermal pad (RVE package code). Pin assignment follows JEDEC-standard top-view layout with dedicated PGND, VIN, SW, and PMBus signal terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ADDR (Pin 1) | PMBus address configuration | Resistor-divider input sets unique I²C address for multi-rail systems; enables up to 8 devices on same bus. |
| EN (Pin 3) | Enable control input | Logic-high (>1.4 V) initiates soft-start; hysteresis (0.22 V) prevents chatter near threshold. |
| FB (Pin 23) | VOUT feedback sense | High-impedance (50–100 nA) input for precision resistor divider; references internal 600-mV bandgap. |
| PGOOD (Pin 2) | Open-drain status output | Asserts after 1-ms delay when VOUT within ±8%; deasserts in ≤2 µs if outside ±16% - enables sequencing and fault isolation. |
| SCL/SDA (Pins 28/27) | PMBus interface | Standard I²C-compatible signals supporting voltage margining, soft-start time, OCP threshold, and real-time telemetry. |
| SW (Pins 6,7,15,16,24) | Power switch node | Five paralleled SW pins reduce trace inductance and thermal resistance - critical for 12-A peak currents and fast dI/dt. |
| PGND (Pins 12,13,14,17,22) | Power ground return | Seven dedicated PGND pins minimize ground bounce and improve current-loop integrity for high-frequency switching. |
| Thermal Pad | Junction-to-board thermal path | Exposed copper pad (θJB = 18.1°C/W) must be soldered to solid PCB ground plane for thermal reliability at full load. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP3™ adaptive on-time control | Enables stable operation with all-ceramic output capacitors and zero external compensation - reduces BOM count and layout sensitivity. |
| Auto-Skipping Eco-Mode™ | Disables switching at light load to achieve >90% efficiency down to 100 mA - extends battery life in idle states. |
| FCCM mode support | Forces continuous conduction to eliminate audible noise and tighten output ripple (<10 mVpp) for sensitive analog or RF subsystems. |
| PMBus™ programmability | Allows runtime adjustment of VOUT, soft-start time, power-on delay, UVLO thresholds, and OCP trip point - simplifies system validation and field tuning. |
| Integrated MOSFETs | 13.8-mΩ HS / 5.9-mΩ LS RDS(on) enables high efficiency without discrete power stage design - reduces footprint and thermal management complexity. |
Applications
| Server Core Power | FPGA I/O Supply |
|---|---|
Use Scenario: Delivering tightly regulated 0.85–1.2 V to multi-core Xeon or AMD EPYC processors in 1U rack servers with strict thermal envelope. IC Role / Device Role / Timing Role: Primary POL regulator with PMBus telemetry for dynamic voltage scaling and health monitoring. Use Value: ±0.5% reference and FCCM mode ensure <±10 mV output deviation during 6-A load steps - meets Intel VR13/VR14 specifications. | Use Scenario: Powering 1.8-V or 2.5-V I/O banks on high-pin-count FPGAs in optical line cards where rail stability affects SERDES jitter. IC Role / Device Role / Timing Role: Secondary buck converter with programmable soft-start and PGOOD sequencing for safe I/O initialization. Use Value: Adjustable power-on delay (356 µs to 32.86 ms) enables precise timing alignment with FPGA configuration clocks and transceiver lock sequences. |
| Networking ASIC Bias | Industrial PLC CPU Rail |
Use Scenario: Generating 1.0-V core supply for 100-Gbps packet processors in carrier-grade routers with high ambient temperature requirements. IC Role / Device Role / Timing Role: High-efficiency, thermally robust DC-DC stage operating continuously at 85°C ambient. Use Value: θJB = 18.1°C/W and 140°C thermal shutdown allow sustained 12-A operation on 2-layer industrial PCBs without heatsinks. | Use Scenario: Providing isolated 3.3-V CPU rail in DIN-rail mounted PLC controllers subject to wide input variation (12–24 VDC) and EMI stress. IC Role / Device Role / Timing Role: Input-flexible buck converter with wide VIN range and robust OVP/UVP protection. Use Value: 116–124% OVP threshold and 64–71% UVP threshold prevent brownout-induced firmware corruption during factory power cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP8770GQ-Z | 4.5–18-V input, 12-A, no PMBus; uses constant-on-time control; 12-mΩ/6.5-mΩ MOSFETs | Lacks digital interface and voltage margining; requires external compensation | Choose for cost-sensitive, non-telemetric POL where analog control suffices. |
| ISL9123IRAJZ-T7A | 2.5–5.5-V input, 8-A, I²C interface, 1.2-V fixed output; smaller 2.5×3.0-mm WLCSP | Lower current, narrower input range, fixed VOUT - not suitable for 12-V input or adjustable rails | Choose only for ultra-compact, low-input-voltage applications like portable SoC cores. |
Compared with MP8770GQ-Z and ISL9123IRAJZ-T7A, the TPS53915RVET uniquely combines 12-A capability, wide 1.5–18-V input, PMBus programmability, and D-CAP3™ zero-compensation operation - making it optimal for high-performance, digitally managed server and networking POL designs.
Availability
TPS53915RVET is available at Aetrix Electronics and suitable for server point-of-load, FPGA core power, and networking ASIC bias applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for TPS53915RVET 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 ICs, with decades of expertise in high-efficiency DC-DC conversion.
The TPS53915RVET belongs to TI's SWIFT™ synchronous buck converter family, designed specifically for high-current, digitally controllable POL applications in datacenter, telecom, and industrial computing systems.
FAQ
What is the maximum supported switching frequency for the TPS53915RVET?
The TPS53915RVET supports eight programmable switching frequencies from 200 kHz to 1000 kHz via FS<2:0> bits. At 1000 kHz, minimum off-time (175–310 ns) and on-time (60 ns) ensure stable operation with 1-µH inductors and ceramic output capacitors - critical for high-density server board layouts where inductor size is constrained.
Does the TPS53915RVET require external compensation components?
No, the TPS53915RVET does not require external compensation components due to its D-CAP3™ control architecture, which uses emulated current sensing and adaptive on-time modulation. This eliminates loop compensation networks, reduces external part count, and improves transient response predictability - verified across 0.6–5.5-V output range and 1.5–18-V input range per datasheet Figure 7–12.
How is overcurrent protection configured on the TPS53915RVET?
Overcurrent protection on the TPS53915RVET is configured via the TRIP pin (Pin 25), which sources a 10-µA current at 25°C. Connecting an external resistor (20–70 kΩ) sets the valley current limit threshold between 7.2 A and 13.9 A. For example, a 52.3-kΩ resistor configures 12-A nominal OCL - matching the device's rated 12-A continuous output capability.
Can the TPS53915RVET operate with pre-biased outputs?
Yes, the TPS53915RVET supports pre-biased output startup, as confirmed in datasheet Figure 29. When enabled, the device safely ramps the output from an existing voltage (e.g., 0.6 V) to the target setpoint without forcing reverse current into downstream circuitry - essential for hot-swap and redundant power architectures.
What is the thermal performance of the TPS53915RVET under full 12-A load?
Under 12-A load, VIN = 12 V, VOUT = 5 V, fSW = 500 kHz, and standard JEDEC high-K board, the TPS53915RVET junction temperature rise is characterized at θJA = 37.5°C/W. With proper thermal pad soldering to a 4-layer PCB ground plane, measured case temperature remains ≤75.6°C at 85°C ambient - ensuring reliable operation within its –40°C to 85°C specification.
TPS53915RVET Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SWIFT™, D-CAP3™, Eco-Mode™
- Package/Case:
- 28-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.5V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 12A
- Frequency - Switching:
- 200kHz ~ 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-VQFN-CLIP (4.5x3.5)
TPS53915RVET FAQ
1.How can I place an order for TPS53915RVET through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS53915RVET 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 TPS53915RVET reliable?
The price and inventory of TPS53915RVET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS53915RVET is usually 5 days.
3.What payment methods are accepted for TPS53915RVET?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS53915RVET transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS53915RVET?
TPS53915RVET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS53915RVET 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 TPS53915RVET?
For technical support, including TPS53915RVET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS53915RVET requirements.
6.How does Aetrix verify that TPS53915RVET is sourced from the original manufacturer or authorized distributors?
All TPS53915RVET 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 TPS53915RVET meets industry standards.
7.What is the process for return or replacement of TPS53915RVET?
All TPS53915RVET units undergo pre-shipment inspection (PSI). If there is an issue with TPS53915RVET, 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 TPS53915RVET part is unused and in its original packaging.
Return procedure for TPS53915RVET:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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