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Texas Instruments TPS53319DQPR
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- Part No.:
- TPS53319DQPR
- Manufacturer:
- Texas Instruments
- Package:
- 22-PowerLFDFN
- Datasheet:
-
TPS53319DQPR.pdf
- Description:
- IC REG BUCK ADJ 14A 22LSON-CLIP
- Quantity:
- Payment:
- Shipping:
Inventory:5,810
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Product details
Overview
TPS53319DQPR from Texas Instruments is a high-efficiency, 14A synchronous buck converter with integrated NexFET™ 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 point-of-load regulation in server VRMs and telecom power supplies.
For engineers reviewing the TPS53319DQPR datasheet, TPS53319DQPR pinout, TPS53319DQPR application, or TPS53319DQPR equivalent, key selection factors include its 14A continuous current rating, selectable 250kHz–1MHz switching frequency via RF pin resistor, auto-skip vs. FCCM mode control via MODE pin, integrated 5V LDO (VREG), and thermal-compensated overcurrent protection using TRIP pin.
Technical Context
The TPS53319DQPR implements adaptive on-time D-CAP™ control that eliminates external compensation by sensing output capacitor ESR, enabling ultra-fast transient response without loop tuning. Its internal 0.6V ±1% reference and ramp-compensated PWM comparator ensure stable regulation across wide VIN/VOUT ranges.
It features dual-path power delivery: main conversion path via VIN pins (12–17) and dedicated bias path via VDD (Pin 19); integrated boost switch (VBST, Pin 4) drives the high-side FET gate; and VREG (Pin 18) supplies internal analog circuitry and gate drivers independently of EN state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 14 A continuous - supports high-current CPU/GPU core rails without external current sharing. |
| Input Voltage Range | 1.5 V to 22 V - compatible with 3.3V, 5V, 12V, and 19V intermediate bus architectures. |
| Output Voltage Range | 0.6 V to 5.5 V - covers DDR, ASIC, FPGA, and SoC core voltages with 1% reference accuracy. |
| Switching Frequency | 250 kHz to 1 MHz (8 presets) - selected by resistor on RF pin; enables optimization of size vs. efficiency vs. EMI. |
| Efficiency | 91% at 12 V → 1.5 V / 14 A - achieved via low-RDS(on) integrated NexFET™ MOSFETs and Eco-mode skip operation. |
| Shutdown Current | < 110 µA - enables low-power standby in always-on systems without auxiliary LDOs. |
| Soft-Start Time | 0.7 ms to 5.6 ms - selectable via resistor on MODE pin; prevents inrush current during power-up. |
Pinout & Package
TPS53319DQPR uses a 22-pin QFN (DQP/LSON-CLIP) package measuring 5.0 mm × 6.0 mm with exposed PowerPAD™ thermal pad (GND, Pin 18) for enhanced heat dissipation. The package is rated for –40°C to 85°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VFB (1) | Feedback input | Connects to resistor divider on output rail; regulates voltage to internal 0.6V reference with ±1% tolerance. |
| EN (2) | Enable control | Active-high logic input; 1.3V turn-on threshold ensures clean sequencing with system power rails. |
| PGOOD (3) | Open-drain status flag | Asserts after 1-ms delay when VFB is within ±5%/±10%; provides system monitoring and fault isolation. |
| VBST (4) | Bootstrap supply | Connects to LL node via capacitor; powers high-side gate driver for efficient synchronous rectification. |
| ROVP (5) | Redundant OVP sense | Optional resistor divider input for secondary overvoltage protection; must be tied to GND if unused. |
| LL (6–11) | Power output node | Direct connection to output inductor; all six pins share current path to minimize IR drop and improve thermal performance. |
| MODE (20) | Mode/soft-start select | Resistor sets both auto-skip/FCCM operation and soft-start time (0.7–5.6 ms); no external timing capacitor needed. |
| RF (22) | Frequency select | Resistor to GND or VREG selects one of eight switching frequencies (250kHz–1MHz); open = 500kHz default. |
| TRIP (21) | OCP threshold setting | Sources 10 µA with 3000 ppm/°C tempco; sets valley current limit (e.g., 5.4A typical at 25°C with 66.5kΩ). |
| VIN (12–17) | Main power input | Six parallel input pins reduce trace resistance and inductance; supports high-current 1.5V–22V conversion path. |
| VDD (19) | Bias supply input | 4.5V–25V dedicated controller supply; independent of VIN path for robust startup under brownout conditions. |
| VREG (18) | 5V LDO output | Supplies internal analog/digital blocks and gate drivers; delivers up to 30 mA with 250 mV dropout at full load. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP™ adaptive on-time control | Eliminates external compensation components and enables sub-µs transient response without loop tuning. |
| Eco-mode auto-skip operation | Reduces switching losses at light loads while maintaining tight output regulation via valley current detection. |
| Integrated 5V LDO (VREG) | Provides regulated bias for internal circuitry and gate drivers - starts automatically at ~2V VDD, independent of EN. |
| Thermal-compensated OCP | TRIP pin sources temperature-dependent current (3000 ppm/°C) to maintain consistent current limit across –40°C to 125°C. |
| All-ceramic capacitor support | Stable operation with low-ESR MLCCs only - reduces board area, cost, and failure risk versus electrolytic + ceramic hybrids. |
| Pre-charged startup capability | Allows safe start-up into pre-biased outputs (e.g., hot-swap or multi-rail sequencing) without reverse current flow. |
Applications
| Server VRM Core Rail | Telecom Baseband Power |
|---|---|
Use Scenario: Regulating 1.0V–1.2V core voltage for dual-socket Xeon processors with dynamic load steps up to 100A/µs. IC Role / Device Role / Timing Role: Primary synchronous buck controller delivering 14A continuous current with D-CAP™ fast transient response and Eco-mode efficiency at idle. Use Value: Achieves 91% peak efficiency and <1% output deviation during 0–14A load steps - reducing thermal load and enabling compact 2-phase designs. |
Use Scenario: Powering FPGA-based baseband processing units in 5G macrocells requiring 1.8V/3.3V rails with strict ripple & sequencing. IC Role / Device Role / Timing Role: Point-of-load regulator with programmable soft-start (0.7–5.6ms) and PGOOD sequencing signal for multi-rail power-up coordination. Use Value: Integrated VREG LDO and open-drain PGOOD enable autonomous power sequencing without external supervisors or timers. |
| Workstation GPU Memory | Industrial Edge AI Module |
Use Scenario: Supplying GDDR6 memory subsystems (1.35V @ 12A) in high-performance workstations with space-constrained PCB layouts. IC Role / Device Role / Timing Role: High-density buck converter using 5mm×6mm QFN package and six parallel VIN/LL pins to minimize conduction loss and thermal resistance. Use Value: RθJC(bot) = 1.2°C/W and PowerPAD™ thermal pad allow >10W dissipation in 100mm² footprint - eliminating need for heatsinks. |
Use Scenario: Powering heterogeneous AI accelerators (e.g., NPU + DSP) in fanless edge servers operating at –40°C to 85°C ambient. IC Role / Device Role / Timing Role: Robust DC-DC with thermal shutdown (145°C), UVLO (4.2V), and redundant ROVP for mission-critical reliability. Use Value: Specified junction temperature range (–40°C to 125°C) and automotive-grade ESD ratings (±2000V HBM) ensure field longevity without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS53318DQPR | 8A continuous output current; identical pinout, package, and feature set except lower current rating and reduced OCP threshold. | Targeted at lower-power SoCs or single-core processors where 14A headroom is unnecessary. | Select when system max load ≤ 8A to reduce thermal design complexity and cost without sacrificing control features. |
| TPS548A29RGER | 15A rating, 16V max VIN, remote sense capability, and smaller 4mm×4mm QFN package; lacks VREG LDO and ROVP pin. | Optimized for data center ASICs requiring tighter voltage accuracy (<±0.5%) and higher integration density. | Choose for next-gen infrastructure designs needing remote sensing and higher current, but verify absence of VREG does not impact gate drive stability. |
Compared with TPS53319DQPR, TPS53318DQPR offers identical functionality at reduced current capacity - simplifying layout reuse - while TPS548A29RGER trades integrated LDO and protection features for higher current density and remote sensing, demanding revised bias and monitoring circuitry.
Availability
TPS53319DQPR is available at Aetrix Electronics and suitable for server VRMs, telecom baseband power, workstation GPU memory, and industrial edge AI modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS53319DQPR 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 and enterprise-grade reliability.
The TPS5331x family was designed specifically for high-current, low-voltage point-of-load applications in computing infrastructure - emphasizing fast transient response, minimal external components, and seamless integration into dense PCB layouts.
FAQ
What is the maximum continuous output current supported by the TPS53319DQPR?
The TPS53319DQPR 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 SLUSAY8G datasheet Section 4 (Device Comparison Table) and confirmed by thermal metrics including RθJC(bot) = 1.2°C/W and junction-to-board characterization.
Does the TPS53319DQPR require external compensation components?
No, the TPS53319DQPR uses D-CAP™ integrated circuit mode control that senses output capacitor ESR to regulate voltage - eliminating the need for external compensation networks. This is explicitly stated in Section 7.1 and Figure 7-2 of the SLUSAY8G datasheet, enabling simpler, more reliable designs.
How is switching frequency selected on the TPS53319DQPR?
Switching frequency on the TPS53319DQPR is selected using an external resistor connected between the RF pin (Pin 22) and either GND or VREG (Pin 18). Eight discrete values from 250 kHz to 1 MHz are supported, as defined in Table 7-1 of the SLUSAY8G datasheet; an open RF connection defaults to 500 kHz.
Can the TPS53319DQPR operate with a pre-biased output voltage?
Yes, the TPS53319DQPR supports pre-charged startup, allowing safe operation into outputs already biased at target voltage. This behavior is documented in Section 7.3.10 of the SLUSAY8G datasheet and prevents reverse current flow during hot-swap or multi-rail sequencing scenarios.
What protection features are integrated into the TPS53319DQPR?
The TPS53319DQPR integrates overvoltage (OVP), undervoltage (UVP), overtemperature (145°C shutdown), UVLO on VREG, and thermal-compensated overcurrent protection (OCP) via the TRIP pin. Redundant OVP is configurable via ROVP (Pin 5), and all protections are detailed in Sections 6.5 and 7.3 of the SLUSAY8G datasheet.
TPS53319DQPR 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)
TPS53319DQPR FAQ
1.How can I place an order for TPS53319DQPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS53319DQPR 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 TPS53319DQPR reliable?
The price and inventory of TPS53319DQPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS53319DQPR is usually 5 days.
3.What payment methods are accepted for TPS53319DQPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS53319DQPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS53319DQPR?
TPS53319DQPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS53319DQPR 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 TPS53319DQPR?
For technical support, including TPS53319DQPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS53319DQPR requirements.
6.How does Aetrix verify that TPS53319DQPR is sourced from the original manufacturer or authorized distributors?
All TPS53319DQPR 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 TPS53319DQPR meets industry standards.
7.What is the process for return or replacement of TPS53319DQPR?
All TPS53319DQPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS53319DQPR, 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 TPS53319DQPR part is unused and in its original packaging.
Return procedure for TPS53319DQPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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