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Texas Instruments TPS54616PWPR
- Part No.:
- TPS54616PWPR
- Manufacturer:
- Texas Instruments
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54616PWPR.pdf
- Description:
- IC REG BUCK 3.3V 6A 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:606
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Product details
Overview
TPS54616PWPR from Texas Instruments is a 3-V to 6-V input, 3.3-V fixed-output synchronous buck PWM converter with integrated 30-mΩ high- and low-side MOSFETs, delivering up to 6-A continuous output current, 1% initial output voltage accuracy, and internal compensation - designed for point-of-load regulation in FPGAs, ASICs, and microprocessors.
For engineers reviewing the TPS54616PWPR datasheet, TPS54616PWPR pinout, TPS54616PWPR application, or TPS54616PWPR equivalent, this device supports adjustable switching frequency (280–700 kHz), features powergood signaling, thermal shutdown, cycle-by-cycle overcurrent protection, and operates in continuous conduction mode without external loop compensation.
Technical Context
The TPS54616PWPR implements a voltage-mode synchronous buck architecture with an integrated error amplifier, 0.891-V precision reference, and adaptive dead-time control to prevent shoot-through. Its PWM comparator compares the error amplifier output against a sawtooth ramp generated by the oscillator, enabling fast transient response (10–20 µs recovery) and stable regulation across load steps from 0 A to 6 A.
It integrates dual 30-mΩ MOSFETs rated for 12-A peak current, uses a bootstrap gate drive for the high-side switch, and includes dedicated AGND/PGND separation for analog/digital noise isolation. The VBIAS regulator supplies internal circuitry at 2.8 V and supports external biasing with ≤100 µA leakage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 6.0 V - supports direct regulation from 3.3-V or 5-V intermediate bus rails without pre-regulation. |
| Output Voltage | 3.3 V ±3.0% over temperature and load - fixed output with 1% initial accuracy at TJ = 25°C. |
| Continuous Output Current | 6 A - sustained delivery without derating under typical PCB thermal conditions (RθJA = 18.2°C/W). |
| Switching Frequency | Fixed 350 kHz or 550 kHz, or adjustable 280–700 kHz via RT resistor - enables EMI optimization and inductor size trade-offs. |
| Internal MOSFET rDS(on) | 30 mΩ (high- and low-side) - minimizes conduction loss and eliminates need for external power switches. |
| Powergood Threshold | VSENSE ≥90% of Vref (i.e., ≥3.0 V for 3.3-V output) - provides reliable system reset and supply sequencing signal. |
| Thermal Shutdown | 150°C trip point with 10°C hysteresis - protects against sustained overload or poor heatsinking without external sensors. |
Pinout & Package
TPS54616PWPR is housed in a thermally enhanced 28-pin HTSSOP (PWP) PowerPAD™ package with exposed thermal pad for efficient heat dissipation. The package requires solder connection to AGND plane for optimal thermal performance (RθJA = 18.2°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND (Pin 1) | Analog ground reference | Return for SS/ENA capacitor, VBIAS bypass, RT/FSEL resistors; must connect to PowerPAD and low-noise AGND plane. |
| VSENSE (Pin 2) | Error amplifier inverting input | Direct connection to output voltage feedback node; determines regulation accuracy and stability. |
| PWRGD (Pin 4) | Open-drain powergood output | Asserts low when VSENSE < 3.0 V, VIN < 3 V, or SS/ENA inactive - used for processor reset and supply sequencing. |
| BOOT (Pin 5) | Bootstrap supply for high-side driver | Connects to PH via 0.022–0.1-µF ceramic capacitor; enables floating gate drive for N-channel high-side MOSFET. |
| PH (Pins 6–14) | Phase node | High-current switching node connecting internal MOSFETs to external inductor; requires short, low-inductance layout. |
| RT (Pin 28) | Frequency setting resistor input | Resistor to AGND sets switching frequency from 280 kHz (180 kΩ) to 700 kHz (68 kΩ); float for internal 350/550 kHz modes. |
| SS/ENA (Pin 26) | Slow-start/enable control | Logic-enable input (1.2 V threshold) and external capacitor interface for programmable startup time (6.1 ms internal default). |
| VBIAS (Pin 25) | Internal bias regulator output | 2.8-V regulated supply for internal circuitry; bypass with 0.1–1-µF X7R/X5R ceramic capacitor to AGND. |
| VIN (Pins 20–24) | Main input supply | 3–6 V input for power switches and VBIAS regulator; each pin must be individually bypassed to PGND near package. |
| PGND (Pins 15–19) | Power ground return | High-current return path for low-side MOSFET and output capacitor; connect directly to large copper area and input/output grounds. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30-mΩ MOSFETs | Eliminates external power switches and reduces board area by >40% vs discrete solutions while maintaining 6-A capability. |
| Internally compensated control loop | Enables stable operation with standard 4.7–10-µH inductors and common output capacitors - no external compensation components required. |
| Adjustable 280–700 kHz switching frequency | Allows optimization of efficiency vs. size vs. EMI: lower frequencies improve light-load efficiency; higher frequencies shrink magnetics. |
| Fast transient response (10–20 µs) | Supports dynamic load steps in FPGA core supplies without violating voltage tolerance - critical for high-speed digital logic. |
| Powergood with 3% hysteresis and 35-µs deglitch | Provides robust system-level fault detection and sequencing without false triggers from output ripple or noise. |
Applications
| FPGA Core Supply | ASIC Point-of-Load Regulation |
|---|---|
|
Use Scenario: Powers 28-nm or 16-nm FPGA core rails requiring tight voltage tolerance and rapid load transients during configuration and logic switching. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 3.3 V at up to 6 A with <20-µs transient recovery and ±3% regulation. Use Value: Maintains FPGA functional integrity during burst-mode operation; eliminates need for external compensation or current-sense resistors. |
Use Scenario: Supplies I/O banks or memory interfaces in high-performance ASICs where input bus is 3.3 V or 5 V and local regulation is mandatory. IC Role / Device Role / Timing Role: Fixed-output DC/DC converter providing isolated, low-noise 3.3-V rail with PWRGD sequencing for multi-rail ASIC power-up. Use Value: Reduces BOM count by integrating MOSFETs and compensation; PowerPAD package enables compact layout on dense ASIC carrier boards. |
| Industrial PLC I/O Module | Networking Line Card Power |
|
Use Scenario: Powers isolated digital I/O circuits in programmable logic controllers operating in extended temperature environments (−40°C to 125°C). IC Role / Device Role / Timing Role: Robust buck converter with thermal shutdown (150°C), UVLO (2.95 V), and 6-A capability for field-side power distribution. Use Value: Ensures uninterrupted operation under brownout or overload; internal current limiting prevents latch-up during short-circuit events. |
Use Scenario: Generates auxiliary 3.3-V supply for SerDes, PHYs, and management controllers on telecom line cards with strict EMI limits. IC Role / Device Role / Timing Role: Adjustable-frequency buck regulator enabling spread-spectrum-like EMI reduction via 280–700 kHz tuning. Use Value: Meets EN55022 Class B emissions without added shielding; RT resistor selection allows board-level EMI tuning post-layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54620RGYT | Same 3–6 V input, 3.3 V output, 6-A rating; uses 16-pin WQFN with wettable flanks and improved RθJA (12.5°C/W). | Better thermal performance in space-constrained layouts; lacks FSEL pin - only supports externally set frequency (280–700 kHz). | Select for thermally demanding applications or automated optical inspection (AOI)-friendly assembly; verify RT resistor compatibility. |
| MP2315DJ-LF-Z | 3–17 V input, 3.3 V fixed output, 6-A rating; monolithic design with 45 mΩ MOSFETs and 500 kHz fixed frequency. | Wider input range suits 12-V intermediate bus designs; lower efficiency at 3.3-V output due to higher rDS(on); no PWRGD or RT adjustability. | Select when input voltage exceeds 6 V or cost sensitivity outweighs feature requirements; confirm thermal margin at full load. |
Compared with TPS54616PWPR, TPS54620RGYT offers superior thermal resistance but removes frequency select flexibility, while MP2315DJ-LF-Z trades input voltage range and cost for reduced integration and missing powergood functionality - making TPS54616PWPR optimal for 3.3-V PoL systems needing full feature set and proven TI support.
Availability
TPS54616PWPR is available at Aetrix Electronics and suitable for FPGA power delivery, ASIC point-of-load regulation, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for TPS54616PWPR 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 automotive-grade reliability.
The TPS5461x product line was designed specifically for low-voltage, high-current point-of-load applications in FPGAs, DSPs, and microprocessors - emphasizing integration, thermal efficiency, and ease of use in space-constrained systems.
FAQ
What is the maximum continuous output current of the TPS54616PWPR?
The TPS54616PWPR delivers up to 6 A of continuous output current under recommended operating conditions (TJ ≤ 125°C, proper PCB thermal design). This rating assumes use of the PowerPAD™ thermal pad soldered to AGND and adequate copper area per TI's layout guidelines. Peak current capability reaches 12 A, but continuous operation above 6 A requires derating based on ambient temperature and airflow.
Does the TPS54616PWPR require external compensation components?
No, the TPS54616PWPR features an internally compensated voltage-mode control loop optimized for standard 4.7–10-µH inductors and common output capacitor types. External compensation is not needed, reducing BOM count and layout complexity. Stability is maintained across the full 0–6 A load range and −40°C to 125°C junction temperature.
How is the switching frequency configured on the TPS54616PWPR?
The TPS54616PWPR supports three frequency modes: fixed 350 kHz (FSEL ≤ 0.8 V, RT open), fixed 550 kHz (FSEL ≥ 2.5 V, RT open), or adjustable 280–700 kHz (FSEL floated, RT resistor from 68 kΩ to 180 kΩ tied to AGND). The RT equation is fSW ≈ 100 kHz × (100 kΩ / R), validated across temperature and process variation.
What is the role of the PWRGD pin on the TPS54616PWPR?
The PWRGD pin is an open-drain powergood indicator that goes high-impedance when VSENSE ≥ 90% of the internal 0.891-V reference (i.e., ≥3.0 V for 3.3-V output), and pulls low otherwise - including during UVLO, SS/ENA disable, or thermal shutdown. It provides precise system-level reset signaling and supply sequencing without external comparators.
Can the TPS54616PWPR operate with a 3.3-V input supply?
Yes, the TPS54616PWPR supports input voltages from 3.0 V to 6.0 V, making it fully compatible with 3.3-V intermediate bus architectures. At VIN = 3.3 V, the device maintains 3.3-V output with up to 6-A load, though efficiency decreases slightly versus higher input voltages due to increased conduction loss in the integrated MOSFETs.
TPS54616PWPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SWIFT™
- Package/Case:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 6A
- Frequency - Switching:
- 350kHz, 550kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
TPS54616PWPR FAQ
1.How can I place an order for TPS54616PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54616PWPR 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 TPS54616PWPR reliable?
The price and inventory of TPS54616PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54616PWPR is usually 5 days.
3.What payment methods are accepted for TPS54616PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54616PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54616PWPR?
TPS54616PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54616PWPR 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 TPS54616PWPR?
For technical support, including TPS54616PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54616PWPR requirements.
6.How does Aetrix verify that TPS54616PWPR is sourced from the original manufacturer or authorized distributors?
All TPS54616PWPR 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 TPS54616PWPR meets industry standards.
7.What is the process for return or replacement of TPS54616PWPR?
All TPS54616PWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS54616PWPR, 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 TPS54616PWPR part is unused and in its original packaging.
Return procedure for TPS54616PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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