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Texas Instruments TPS53319DQPT
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- Part No.:
- TPS53319DQPT
- Manufacturer:
- Texas Instruments
- Package:
- 22-PowerLFDFN
- Datasheet:
-
TPS53319DQPT.pdf
- Description:
- IC REG BUCK ADJ 14A 22LSON-CLIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,375
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Product details
Overview
TPS53319DQPT from Texas Instruments is a high-efficiency, 14A synchronous buck converter with integrated NexFET™ power MOSFETs, D-CAP™ control architecture, and Eco-mode for light-load efficiency. It operates from 1.5V–22V input, delivers 0.6V–5.5V output, and achieves 91% efficiency at 12V→1.5V/14A - optimized for CPU/GPU core power in server point-of-load applications.
For engineers reviewing the TPS53319DQPT datasheet, TPS53319DQPT pinout, TPS53319DQPT application, or TPS53319DQPT equivalent, key selection criteria include its 14A continuous output current, selectable 250kHz–1MHz switching frequency via RF pin resistor, auto-skip vs. FCCM mode control, integrated 5V LDO (VREG), and thermal-compensated overcurrent protection with TRIP pin.
Technical Context
The TPS53319DQPT implements adaptive on-time D-CAP™ control using output capacitor ESR for current sensing - eliminating external compensation components. Its pseudo-constant switching frequency is dynamically adjusted based on VIN and VOUT to maintain stability across wide input/output ranges.
It features dual-mode operation: auto-skip for high light-load efficiency (<110μA shutdown current) and forced CCM for low-noise, fixed-frequency behavior. Soft-start time (0.7ms–5.6ms) and OCP threshold are set via external resistors on MODE and TRIP pins, while redundant OVP is configurable via ROVP.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 14 A continuous - supports high-power CPU/GPU core rails without external MOSFETs |
| Input Voltage Range | 1.5 V to 22 V - compatible with 3.3V, 5V, 12V, and intermediate bus architectures |
| Output Voltage Range | 0.6 V to 5.5 V - covers modern digital IC core, I/O, and auxiliary supply requirements |
| Switching Frequency | 250 kHz to 1 MHz (8 preset values) - selected by RF pin resistor for EMI/noise optimization |
| Efficiency | 91% at 12 V → 1.5 V / 14 A - enables thermally constrained board layouts in dense server modules |
| Reference Accuracy | ±0.5% over –40°C to 85°C - ensures tight output regulation for sensitive digital loads |
| Shutdown Current | <110 μA - minimizes system standby power in always-on infrastructure equipment |
Pinout & Package
TPS53319DQPT uses a 22-pin QFN (DQP/LSON-CLIP) package with exposed PowerPAD™ thermal pad (6.0 mm × 5.0 mm). The package is RoHS-compliant and specified for –40°C to 85°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VFB | Feedback input | Connects to resistor divider on output rail; regulates voltage to internal 0.6 V reference |
| EN | Enable control | Active-high logic input; 1.3 V turn-on threshold enables full converter operation |
| PGOOD | Power-good flag | Open-drain output with 1-ms delay; signals valid output after soft-start completion |
| VBST | Bootstrap supply | Drives high-side FET gate; requires capacitor to LL (switch node) for charge replenishment |
| TRIP | OCP threshold setting | Sources 10 µA at 25°C; sets valley current limit via external resistor (VOCL = VTRIP/32) |
| MODE | Soft-start & mode select | Resistor-programmable: selects 0.7/1.4/2.8/5.6 ms soft-start and auto-skip/FCCM mode |
| RF | Frequency selection | Resistor-to-GND or VREG sets one of eight switching frequencies (250 kHz–1 MHz) |
| VDD | Bias supply | 4.5 V–25 V input powering controller logic and gate drivers; independent of VIN rail |
| VREG | Integrated LDO output | 5 V ±5%, 30 mA max - powers internal analog circuitry and bootstrap driver |
| VIN | Main power input | 1.5 V–22 V conversion input; 8× parallel pins reduce PCB trace resistance and thermal stress |
| LL | Power output | Switch node connection to output inductor; high-current path requiring low-inductance layout |
| ROVP | Redundant OVP input | Resistor-divider input for secondary overvoltage protection; must be tied to GND if unused |
| GND / PowerPad | Ground & thermal path | Primary ground return and thermal interface; requires multiple vias to inner ground plane |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP™ adaptive on-time control | Eliminates external compensation components by using output capacitor ESR for current sensing |
| Eco-mode auto-skip operation | Reduces switching losses at light load, achieving <110 μA shutdown current and high partial-load efficiency |
| Configurable soft-start | Four selectable times (0.7/1.4/2.8/5.6 ms) via MODE pin resistor - prevents inrush current in multi-rail systems |
| Thermal-compensated OCP | TRIP pin sources 10 µA with 3000 ppm/°C tempco, enabling stable current limiting across –40°C to 125°C junction range |
| Integrated 5-V LDO (VREG) | Supplies internal analog blocks and gate drivers; starts automatically when VDD > 2 V, independent of EN pin |
| All-ceramic capacitor support | Stable operation with low-ESR ceramic output caps - reduces solution size and eliminates electrolytic reliability concerns |
Applications
| Server Core Voltage Regulation | Telecom Baseband Power |
|---|---|
Use Scenario: Delivering tightly regulated 1.0 V–1.2 V at up to 14 A to high-performance x86 or ARM-based server CPUs under dynamic load transients. IC Role / Device Role / Timing Role: Primary synchronous buck regulator implementing D-CAP™ control for sub-100 ns transient response and minimal output capacitance. Use Value: 91% peak efficiency and integrated MOSFETs reduce board area and thermal design complexity in 1U rack-mounted servers. |
Use Scenario: Generating 3.3 V or 5.0 V power for FPGA, DSP, and RF front-end ICs in 5G baseband units with strict EMI limits. IC Role / Device Role / Timing Role: High-density POL converter with selectable 500 kHz/750 kHz switching to balance efficiency and filter size. Use Value: Auto-skip mode maintains >85% efficiency at 100 mA load, extending uptime in fanless telecom enclosures. |
| Workstation GPU Power | Industrial Embedded Controller |
Use Scenario: Supplying 0.8 V–1.1 V core voltage to discrete GPUs in AI workstations with rapid load steps exceeding 10 A/µs. IC Role / Device Role / Timing Role: Fast-response buck converter leveraging D-CAP™ architecture and adaptive zero-crossing detection in skip mode. Use Value: Sub-200 ns load-step recovery and integrated OVP/UVP protect expensive GPU silicon during firmware updates or thermal throttling. |
Use Scenario: Providing robust 1.8 V or 2.5 V rail for industrial PLC processors operating in –40°C to 85°C ambient with high vibration. IC Role / Device Role / Timing Role: Mission-critical DC-DC with thermal shutdown (145°C), UVLO hysteresis, and open-drain PGOOD for system-level fault reporting. Use Value: 125°C max junction rating and PowerPAD™ thermal design ensure long-term reliability in sealed, convection-cooled enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS53318DQPT | 8 A continuous output current; identical pinout, control architecture, and feature set | Suitable for lower-power SoCs or dual-core CPUs where 14 A headroom is unnecessary | Select when thermal budget or cost sensitivity outweighs need for 14 A capability |
| TPS548A29RGER | 15 A rating, 16 V max VIN, remote sense capability, and smaller 4-mm × 4-mm QFN package | Targeted at data center ASICs requiring tighter output voltage accuracy under load/line/temperature | Choose for next-gen infrastructure designs needing remote sensing and higher current density |
Compared with TPS53319DQPT, TPS53318DQPT offers identical functionality at reduced current capacity, while TPS548A29RGER adds remote sensing and higher integration at the cost of different pinout and no Eco-mode - making TPS53319DQPT optimal for cost-sensitive, thermally constrained 14 A POL applications without remote sense.
Availability
TPS53319DQPT is available at Aetrix Electronics and suitable for server power delivery, telecom baseband supplies, and industrial embedded controllers requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS53319DQPT 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 decades of expertise in high-efficiency DC-DC conversion.
The TPS5331x family was designed specifically for high-current, low-voltage point-of-load regulation in computing infrastructure - emphasizing fast transient response, minimal external components, and thermal resilience in space-constrained environments.
FAQ
What is the maximum continuous output current supported by the TPS53319DQPT?
The TPS53319DQPT supports 14 A of continuous output current under recommended operating conditions (TA ≤ 85°C, proper PCB thermal design). This rating is validated per TI's datasheet Section 4 (Device Comparison Table) and confirmed in Section 6.5 Electrical Characteristics with valley OCP thresholds of 4.4–6.3 A across temperature - scaled for 14 A operation with appropriate layout and airflow.
Does the TPS53319DQPT require external compensation components?
No, the TPS53319DQPT does not require external compensation components. Its D-CAP™ control architecture uses the ESR of the output capacitor for current sensing, enabling stable operation with all-ceramic capacitors and eliminating the need for traditional Type-II or Type-III compensation networks - as explicitly stated in Section 7.1 Overview and Section 7.3.2.
How is the switching frequency configured on the TPS53319DQPT?
The switching frequency of the TPS53319DQPT is configured using an external resistor connected to the RF pin: grounding RF selects 250 kHz, while connecting to VREG with 124 kΩ yields 850 kHz (per Table 7-1). Eight discrete frequencies between 250 kHz and 1 MHz are supported - no oscillator trimming or digital programming is required.
What protection features are integrated into the TPS53319DQPT?
The TPS53319DQPT integrates overvoltage (OVP), undervoltage (UVP), overtemperature (145°C shutdown), and thermal-compensated overcurrent protection (OCP) with adjustable threshold via the TRIP pin. It also includes VREG UVLO (4.2 V wake-up), open-drain PGOOD monitoring, and redundant OVP via ROVP - all detailed in Sections 6.5 and 7.3.9 of the datasheet.
Can the TPS53319DQPT operate with a single input rail?
Yes, the TPS53319DQPT supports single-rail operation: its VIN pin accepts 1.5 V–22 V for power conversion, while VDD (4.5 V–25 V) may be supplied from the same rail or a separate bias source. Section 1 Features explicitly states "Supports single-rail input", and Figure 7-1 shows VDD and VIN rising concurrently during startup.
TPS53319DQPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- D-CAP™, Eco-Mode™
- Package/Case:
- 22-PowerLFDFN
- 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):
- 22V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 14A
- Frequency - Switching:
- 250kHz ~ 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 22-LSON-CLIP (6x5)
TPS53319DQPT FAQ
1.How can I place an order for TPS53319DQPT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS53319DQPT 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 TPS53319DQPT reliable?
The price and inventory of TPS53319DQPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS53319DQPT is usually 5 days.
3.What payment methods are accepted for TPS53319DQPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS53319DQPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS53319DQPT?
TPS53319DQPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS53319DQPT 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 TPS53319DQPT?
For technical support, including TPS53319DQPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS53319DQPT requirements.
6.How does Aetrix verify that TPS53319DQPT is sourced from the original manufacturer or authorized distributors?
All TPS53319DQPT 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 TPS53319DQPT meets industry standards.
7.What is the process for return or replacement of TPS53319DQPT?
All TPS53319DQPT units undergo pre-shipment inspection (PSI). If there is an issue with TPS53319DQPT, 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 TPS53319DQPT part is unused and in its original packaging.
Return procedure for TPS53319DQPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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