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Texas Instruments TPS53515RVET
- Part No.:
- TPS53515RVET
- Manufacturer:
- Texas Instruments
- Package:
- 28-VFQFN Exposed Pad
- Datasheet:
-
TPS53515RVET.pdf
- Description:
- IC REG BUCK ADJ 12A 28VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,374
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Product details
Overview
TPS53515RVET from Texas Instruments is a 12A synchronous step-down DC-DC converter with integrated 13.8mΩ/5.9mΩ MOSFETs, D-CAP3™ adaptive on-time control, and 0.6V ±0.5% reference voltage. It operates from 1.5V–18V input (4.5V–25V bias), delivers 0.6V–5.5V output, and targets high-efficiency point-of-load regulation for FPGAs and DSPs in server and networking infrastructure.
For engineers reviewing the TPS53515RVET datasheet, TPS53515RVET pinout, TPS53515RVET application, or TPS53515RVET equivalent, key selection criteria include its FCCM/auto-skip mode operation, eight selectable switching frequencies (250kHz–1MHz), precharged start-up capability, and VQFN-CLIP thermal performance for high-density POL designs.
Technical Context
The TPS53515RVET implements D-CAP3™ control using an internal emulated ramp and zero-crossing detection to achieve ultra-fast load-step response without external compensation. Its adaptive on-time architecture dynamically adjusts switching frequency during transients while maintaining tight regulation via 0.5% reference accuracy and built-in soft-start.
It integrates a 5V LDO (VREG) powered from VDD, supports all-ceramic output capacitors, and features dual-mode operation: forced continuous conduction mode (FCCM) for low ripple in performance ICs, and auto-skipping Eco-mode™ for >90% light-load efficiency. Overcurrent protection uses TRIP pin current sourcing (10µA) with programmable valley limit (7.2A–13.9A).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 12A continuous - supports high-current FPGA core rails without external MOSFETs |
| Input Voltage Range | 1.5V–18V main input; 4.5V–25V VDD bias - enables flexible system-level power architecture |
| Reference Voltage | 600mV ±0.5% - ensures ±6mV absolute output tolerance at 1.2V setting |
| Switching Frequency | 250kHz–1MHz (8 settings via RF pin resistor divider) - balances efficiency, size, and EMI |
| Control Mode | D-CAP3™ with adaptive on-time - eliminates need for external compensation network |
| Package Thermal Resistance | RθJA = 37.5°C/W (RVE package) - enables 12A operation with standard PCB copper |
| Protection Features | OVP/UVP, thermal shutdown (140°C), overcurrent (valley detection), PGOOD with 1ms delay - ensures robust system-level reliability |
Pinout & Package
TPS53515RVET is housed in a 3.5mm × 4.5mm, 28-pin VQFN-CLIP (RVE) package with exposed thermal pad for enhanced power dissipation. The CLIP structure improves thermal performance and reduces parasitic inductance in high-frequency switching paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (6,7,8,9) | Power switch node | Connects directly to output inductor; four parallel pins reduce current density and trace inductance |
| PGND (10,11,12,13,14) | Power ground return | Low-impedance path for low-side MOSFET current; multiple pins minimize ground bounce |
| VIN (15,16,17) | Main power input | Three parallel pins handle high peak input currents; requires local bulk capacitance |
| FB (23) | Feedback input | Monitors output via resistor divider; referenced to 600mV internal reference for precise regulation |
| RF (1) | Frequency configuration | Resistor divider between VREG and GND sets one of eight switching frequencies (250kHz–1MHz) |
| MODE (21) | Operation mode select | Configures FCCM (tight ripple) or Eco-mode™ (high light-load efficiency); also sets D-CAP3 ramp coefficient |
| TRIP (25) | OCP threshold setting | Sources 10µA; external resistor sets valley current limit (7.2A–13.9A range) |
| PGOOD (2) | Power-good status | Open-drain signal asserts after FB settles within ±8%/±16%; 2µs fast fault response |
Key Features
| Feature | Design Value |
|---|---|
| Integrated MOSFETs | 13.8mΩ high-side + 5.9mΩ low-side - eliminates external power stage, reduces BOM count and layout area |
| All-ceramic capacitor support | No external compensation required - enables compact, low-ESR MLCC-based output filtering |
| Precharged start-up | Safe startup into pre-biased outputs - prevents reverse current flow in hot-swap or multi-rail systems |
| Built-in output discharge | 10–15mA VO sink current - actively discharges output when disabled, meeting sequencing requirements |
| VQFN-CLIP thermal design | 2.2°C/W RθJC(bot) - direct thermal path from die to PCB enhances 12A continuous operation |
Applications
| Server Core Voltage Regulation | Networking ASIC Power |
|---|---|
|
Use Scenario: Regulating 0.8V–1.2V core supplies for Xeon or AMD EPYC processors in 1U rack servers. IC Role / Device Role / Timing Role: Primary POL converter delivering 12A with <1% load regulation and sub-10µs transient response. Use Value: D-CAP3™ control maintains 10mV droop under 6A/µs load steps; FCCM mode ensures <10mV ripple for timing-critical logic. |
Use Scenario: Powering 1.8V I/O and 1.0V SerDes rails in 100G Ethernet line cards with strict EMI limits. IC Role / Device Role / Timing Role: High-efficiency buck regulator with selectable 500kHz/1MHz switching to balance thermal and spectral performance. Use Value: Eight frequency options allow EMI spread-spectrum tuning; 92% efficiency at 6A/1.8V reduces heatsink requirements. |
| FPGA Auxiliary Rail | Optical Transceiver Bias |
|
Use Scenario: Generating 2.5V auxiliary voltage for FPGA configuration and PCIe interface circuitry. IC Role / Device Role / Timing Role: Secondary POL converter with independent enable and PGOOD signaling for power sequencing. Use Value: EN pin threshold (1.4V typ) and 1ms soft-start enable precise turn-on timing; open-drain PGOOD interfaces directly with FPGA POR logic. |
Use Scenario: Providing stable 3.3V bias for SFP+ and QSFP28 optical modules in telecom base stations. IC Role / Device Role / Timing Role: Compact, thermally robust DC-DC supply operating from intermediate 5V or 12V backplane rails. Use Value: VQFN-CLIP package achieves 37.5°C/W θJA - sustains full 12A output at 85°C ambient without airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS53632GRTVR | 16A rating, 3.3V–20V input, dual-phase capable, higher RDS(on) (16.5mΩ/8.2mΩ) | Targets higher-current CPU VRMs; requires phase-interleaving design and larger inductors | Select when >12A output or multi-phase scalability is required; not drop-in due to different pinout and control interface |
| MP2315GJ-Z | 12A, 4.5V–28V input, fixed 500kHz fSW, no frequency selection or MODE pin, lower accuracy (±1.5% ref) | Suitable for cost-sensitive industrial rails where programmability and precision are secondary | Choose for simplified BOM and layout where FCCM/Eco-mode selection and 0.5% reference are not critical |
Compared with TPS53515RVET, TPS53632GRTVR offers higher current headroom but demands more complex layout and thermal management, while MP2315GJ-Z trades configurability and precision for integration simplicity-making TPS53515RVET optimal for space-constrained, high-performance computing POLs requiring both flexibility and accuracy.
Availability
TPS53515RVET is available at Aetrix Electronics and suitable for server power delivery, networking infrastructure, FPGA auxiliary supplies, and optical transceiver biasing requiring stable component supply across long production cycles.
Supply support for TPS53515RVET 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 and embedded processing technologies, with decades of expertise in power management ICs for computing and communications.
The TPS53515RVET belongs to TI's SWIFT™ synchronous buck converter family, engineered specifically for high-density, high-efficiency point-of-load regulation in datacenter and networking equipment where thermal performance, transient response, and design simplicity are critical.
FAQ
What input voltage ranges does the TPS53515RVET support?
The TPS53515RVET supports two distinct input domains: main power conversion from 1.5V to 18V on VIN pins, and bias supply from 4.5V to 25V on the VDD pin. This dual-input architecture allows flexible system-level power design-for example, using a 12V intermediate rail for VIN while deriving VDD from a dedicated 5V LDO. Absolute maximum ratings extend to 30V on VIN and 28V on VDD.
How does the TPS53515RVET achieve fast load-step response without external compensation?
The TPS53515RVET uses D-CAP3™ control mode with an internal emulated current ramp generated from the SW node. This architecture senses output ripple directly, eliminating the need for external RC compensation networks. Combined with adaptive on-time modulation, it delivers sub-10µs transient response-verified in Figure 5-19-and maintains stability with all-ceramic output capacitors, reducing design iteration time.
Can the TPS53515RVET start up into a precharged output voltage?
Yes, the TPS53515RVET supports precharged start-up, as confirmed in Figure 5-29 of the datasheet. When enabled with VO already biased (e.g., 0.6V), the device prevents reverse current flow by controlling gate drive timing and activating its internal output discharge circuit only after regulation begins. This feature is essential for hot-swap and multi-rail sequencing applications.
What is the purpose of the TRIP pin on the TPS53515RVET?
The TRIP pin on the TPS53515RVET sources a precise 10µA current (with 3000ppm/°C tempco) to set the valley overcurrent limit. An external resistor between TRIP and GND determines the OCL threshold-e.g., 52.3kΩ yields 12A nominal limit. This programmable, temperature-compensated method replaces sense-resistor-based protection, improving accuracy and reducing board space versus discrete solutions.
Does the TPS53515RVET require special PCB layout considerations for thermal performance?
Yes-the TPS53515RVET's VQFN-CLIP (RVE) package relies on the exposed thermal pad for heat transfer. TI recommends soldering the pad to a minimum 200mm² copper pour with ≥4 thermal vias (0.3mm diameter, filled or capped) connecting to inner ground planes. Section 7.4 of the datasheet specifies trace width rules for VIN, SW, and PGND nets to limit temperature rise below 20°C at 12A, ensuring reliable operation at 85°C ambient.
TPS53515RVET 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)
TPS53515RVET FAQ
1.How can I place an order for TPS53515RVET through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS53515RVET 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 TPS53515RVET reliable?
The price and inventory of TPS53515RVET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS53515RVET is usually 5 days.
3.What payment methods are accepted for TPS53515RVET?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS53515RVET transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS53515RVET?
TPS53515RVET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS53515RVET 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 TPS53515RVET?
For technical support, including TPS53515RVET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS53515RVET requirements.
6.How does Aetrix verify that TPS53515RVET is sourced from the original manufacturer or authorized distributors?
All TPS53515RVET 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 TPS53515RVET meets industry standards.
7.What is the process for return or replacement of TPS53515RVET?
All TPS53515RVET units undergo pre-shipment inspection (PSI). If there is an issue with TPS53515RVET, 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 TPS53515RVET part is unused and in its original packaging.
Return procedure for TPS53515RVET:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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