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Texas Instruments TPS54316PWPG4
- Part No.:
- TPS54316PWPG4
- Manufacturer:
- Texas Instruments
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54316PWPG4.pdf
- Description:
- IC REG BUCK 3.3V 3A 20HTSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS54316PWPG4 from Texas Instruments is a 3-A synchronous buck PWM converter with integrated 60-mΩ MOSFETs, fixed 3.3-V output, and 3-V to 6-V input range. It delivers high-efficiency point-of-load regulation for FPGAs and microprocessors, featuring internal compensation, fast transient response, and powergood signaling.
For engineers reviewing the TPS54316PWPG4 datasheet, TPS54316PWPG4 pinout, TPS54316PWPG4 application, or TPS54316PWPG4 equivalent, key selection considerations include its 3.3-V ±2.5% output accuracy over –40°C to 125°C, 350/550 kHz fixed or 280–700 kHz adjustable switching frequency, thermal shutdown at 150°C, and HTSSOP-20 PowerPAD™ package with PGND/AGND separation.
Technical Context
The TPS54316PWPG4 implements a voltage-mode synchronous buck architecture with an internally compensated error amplifier (26 dB open-loop gain, 3–5 MHz unity-gain bandwidth) and adaptive dead-time control to prevent shoot-through. Its PWM comparator features 70–85 ns propagation delay and 100 ns leading-edge blanking for robust current-limit detection.
It integrates a 2.8-V UVLO with 0.16-V hysteresis, a 6.1-ms internal slow-start ramp (3.3-V output), and a VBIAS regulator delivering 2.7–2.9 V at up to 100 µA. The PWRGD open-drain output asserts low when VSENSE falls below 90% of 0.891-V reference, with 3% hysteresis and 35-µs deglitch.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V, ±2.5% over full temperature/load range - enables direct replacement of LDOs in 3.3-V rail systems without external feedback resistors. |
| Input Voltage Range | 3 V to 6 V - supports single-cell Li-ion, USB PD, and 5-V distributed supply inputs without pre-regulation. |
| Continuous Output Current | 3 A - sustains full load under worst-case thermal conditions (TJ ≤ 125°C) with proper PCB copper and thermal vias. |
| Switching Frequency | 350 kHz or 550 kHz (FSEL-selectable), or 280–700 kHz (RT-resistor programmable) - balances efficiency, size, and EMI requirements across applications. |
| Efficiency | Peak >90% at 3.3-V/2-A, VIN = 5 V - achieved via 60-mΩ high-side/low-side MOSFETs and optimized gate drive with adaptive dead time. |
| Thermal Shutdown | 150°C trip point with 10°C hysteresis - protects against sustained overload or inadequate heatsinking in enclosed industrial environments. |
| Powergood Accuracy | VSENSE threshold = 90% × 0.891 V = 0.802 V, ±3% hysteresis - provides reliable system reset and sequencing coordination with processors and FPGAs. |
Pinout & Package
TPS54316PWPG4 uses a thermally enhanced 20-pin HTSSOP (PWP) package with exposed PowerPAD™ for low thermal resistance (RθJA = 26.0°C/W with soldered pad). AGND and PGND are physically separated to minimize noise coupling between analog and power return paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 AGND | Analog ground reference | Return for VSENSE divider, SS/ENA capacitor, RT resistor, and VBIAS bypass - must be connected to PowerPAD™ with dedicated low-inductance trace. |
| 2 VSENSE | Error amplifier inverting input | Direct connection to output voltage sense point - determines regulation accuracy; requires Kelvin routing to avoid IR drop errors. |
| 4 PWRGD | Open-drain powergood output | Pulled low if VSENSE < 0.802 V, VIN < 2.8 V, SS/ENA < 0.82 V, or thermal shutdown active - drives processor RESET# or FPGA INIT_B. |
| 5 BOOT | Bootstrap supply for high-side driver | Connects 0.022–0.1-µF ceramic capacitor to PH - enables floating gate drive for N-channel high-side MOSFET without external charge pump. |
| 6–10 PH | Phase node (switching node) | Junction of internal high/low-side FETs and output inductor - requires minimal loop area with low-ESR input cap and ferrite bead filtering for EMI control. |
| 11–13 PGND | Power ground return | High-current return for low-side FET and input/output capacitors - must tie directly to PowerPAD™ and share large copper pour with VIN and output caps. |
| 14–16 VIN | Main input supply | 3–6 V input for power stage and bias regulator - bypassed locally with 1–10-µF ceramic cap to PGND pins to suppress switching transients. |
| 17 VBIAS | Bias regulator output | 2.7–2.9 V internal supply - bypassed with 0.1–1.0-µF X7R/X5R ceramic cap to AGND; not intended for external loading beyond 100 µA. |
| 18 SS/ENA | Slow-start/enable control | Enable threshold = 0.82–1.40 V; internal 6.1-ms soft-start for 3.3-V output - external capacitor extends start time linearly for inrush current limiting. |
| 19 FSEL | Frequency select input | Logic input: ≤0.8 V → 350 kHz, ≥2.5 V → 550 kHz - allows dynamic frequency selection without resistor network changes. |
| 20 RT | External frequency setting | Resistor to AGND sets 280–700 kHz (e.g., 100 kΩ → 500 kHz) - enables precise EMI tuning and synchronization avoidance in multi-rail systems. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 60-mΩ MOSFETs | Enables 3-A continuous output without external power switches - reduces BOM count and layout complexity while maintaining >90% peak efficiency. |
| Internally compensated control loop | Eliminates need for external compensation components - supports stable operation with standard 4.7–10 µH inductors and ceramic output capacitors. |
| Fast transient response | 10–20 µs recovery time from load steps - maintains tight 3.3-V regulation during FPGA core voltage transients without external feedforward. |
| PowerPAD™ thermal enhancement | 26.0°C/W junction-to-ambient (with soldered pad) - allows full 3-A operation in compact industrial PCBs without heatsinks or forced air. |
| Comprehensive protection suite | Includes cycle-by-cycle current limit (4.5–7.5 A), thermal shutdown (150°C), UVLO (2.95 V start), and PWRGD fault signaling - ensures robust field reliability. |
Applications
| Point-of-Load Regulation for FPGAs | Low-Voltage Industrial Control Systems |
|---|---|
|
Use Scenario: Powers 3.3-V I/O banks and configuration circuitry of Xilinx Artix-7 and Intel Cyclone V FPGAs in programmable logic controllers. IC Role / Device Role / Timing Role: Primary DC-DC regulator delivering tightly regulated 3.3-V rail with fast transient response to handle FPGA I/O switching currents. Use Value: Maintains 3.3-V ±2.5% accuracy across –40°C to 85°C ambient, enabling reliable FPGA configuration and I/O timing margins without derating. |
Use Scenario: Supplies 3.3-V logic rails for ARM Cortex-M7-based motor control modules operating in factory automation cabinets. IC Role / Device Role / Timing Role: High-reliability buck converter with thermal shutdown and PWRGD signaling for safe startup/shutdown sequencing. Use Value: Survives 125°C junction temperature with PowerPAD™ cooling and provides PWRGD-driven watchdog reset on undervoltage events. |
| Optical Transceiver Modules | Notebook PC Subsystem Power |
|
Use Scenario: Generates 3.3-V bias for SFP+ and QSFP28 optical module lasers and TIAs in telecom access equipment. IC Role / Device Role / Timing Role: Compact, efficient 3-A regulator meeting strict EMI limits for pluggable optical interfaces. Use Value: Adjustable 280–700 kHz switching frequency avoids interference with 10-Gbps data lanes and simplifies filter design. |
Use Scenario: Provides 3.3-V auxiliary power for USB-C controller, EC, and audio codec in thin-and-light notebook designs. IC Role / Device Role / Timing Role: Space-constrained buck converter leveraging HTSSOP-20 footprint and internal compensation. Use Value: Reduces board area by eliminating external compensation components and supports 3-V minimum input from battery or adapter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54316PWP | Same silicon, identical electrical specs, but standard RoHS-compliant finish (no lead-free G4 suffix) | No functional difference; suitable for non-automotive, non-safety-critical commercial use | Select TPS54316PWP if lead-free compliance without Pb-free annealing is sufficient and cost sensitivity is high. |
| MP2333HG-33-LF-Z | 3.3-V fixed output, 3-A rating, but 2.5–5.5-V input range and 500-kHz fixed frequency - lacks FSEL/RT flexibility and PowerPAD™ thermal performance | Better suited for space-constrained consumer devices where 26.0°C/W RθJA is not required | Choose MP2333HG-33-LF-Z only when board-level thermal management is robust and frequency adjustability is unnecessary. |
Compared with TPS54316PWPG4, the TPS54316PWP offers identical functionality at lower cost for non-automotive use, while the MP2333HG-33-LF-Z trades thermal headroom and frequency configurability for smaller footprint and simpler BOM - making TPS54316PWPG4 optimal for thermally demanding industrial and telecom applications.
Availability
TPS54316PWPG4 is available at Aetrix Electronics and suitable for FPGA power delivery, industrial control systems, optical transceiver modules, and notebook subsystem power requiring stable component supply and long-term lifecycle support.
Supply support for TPS54316PWPG4 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 industrial, automotive, and communications markets.
The TPS54316PWPG4 belongs to TI's SWIFT™ family of synchronous buck converters, designed specifically for high-density, high-efficiency point-of-load regulation in FPGA, DSP, and microprocessor applications where thermal performance and transient response are critical.
FAQ
What is the maximum continuous output current of the TPS54316PWPG4?
The TPS54316PWPG4 delivers 3 A continuously under recommended operating conditions (TJ ≤ 125°C, proper PCB thermal design with PowerPAD™ soldered). Its 60-mΩ integrated MOSFETs and 26.0°C/W thermal resistance enable this rating without external heatsinks in typical industrial layouts.
Does the TPS54316PWPG4 require external compensation components?
No, the TPS54316PWPG4 features an internally compensated voltage-mode control loop. It operates stably with standard 4.7–10 µH inductors and ceramic output capacitors without external compensation networks - reducing BOM count and layout risk.
How does the PWRGD pin function on the TPS54316PWPG4?
The PWRGD pin is an open-drain output that goes low when VSENSE falls below 90% of the 0.891-V reference (i.e., <0.802 V), or when VIN drops below UVLO, SS/ENA is disabled, or thermal shutdown activates. It pulls high only when all conditions are met, enabling reliable system reset coordination.
Can the switching frequency of the TPS54316PWPG4 be adjusted?
Yes - the TPS54316PWPG4 supports three frequency modes: 350 kHz (FSEL ≤0.8 V), 550 kHz (FSEL ≥2.5 V), or 280–700 kHz via an RT-to-AGND resistor (e.g., 100 kΩ sets ~500 kHz). This flexibility aids EMI optimization and avoids beat frequencies in multi-rail systems.
What thermal performance can be expected from the TPS54316PWPG4 in a standard PCB layout?
With the PowerPAD™ soldered to a 2-layer 3×3-inch board (1.5 oz copper, 10 thermal vias), the TPS54316PWPG4 achieves RθJA = 26.0°C/W. At 3 A and 5-V input, typical power dissipation is ~0.6 W, resulting in ~16°C junction rise above ambient - well within the 125°C max operating limit.
TPS54316PWPG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SWIFT™
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 3A
- Frequency - Switching:
- 350kHz, 550kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS54316PWPG4 FAQ
1.How can I place an order for TPS54316PWPG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54316PWPG4 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 TPS54316PWPG4 reliable?
The price and inventory of TPS54316PWPG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54316PWPG4 is usually 5 days.
3.What payment methods are accepted for TPS54316PWPG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54316PWPG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54316PWPG4?
TPS54316PWPG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54316PWPG4 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 TPS54316PWPG4?
For technical support, including TPS54316PWPG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54316PWPG4 requirements.
6.How does Aetrix verify that TPS54316PWPG4 is sourced from the original manufacturer or authorized distributors?
All TPS54316PWPG4 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 TPS54316PWPG4 meets industry standards.
7.What is the process for return or replacement of TPS54316PWPG4?
All TPS54316PWPG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS54316PWPG4, 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 TPS54316PWPG4 part is unused and in its original packaging.
Return procedure for TPS54316PWPG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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