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Texas Instruments TPS54680PWPR
- Part No.:
- TPS54680PWPR
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54680PWPR.pdf
- Description:
- IC REG CONV 1OUT 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,808
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Product details
Overview
TPS54680PWPR from Texas Instruments is a 3-V to 6-V input, 6-A output synchronous buck PWM switcher with integrated high- and low-side MOSFETs (30 mΩ typical), fixed/adjustable switching frequency (350 kHz default, 280–700 kHz), and tracking capability via TRACKIN pin for power sequencing in multi-rail systems. It delivers precise 0.891-V reference accuracy and supports point-of-load regulation for FPGAs and DSPs.
For engineers reviewing the TPS54680PWPR datasheet, TPS54680PWPR pinout, TPS54680PWPR application, or TPS54680PWPR equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and electrical specifications, and real-world sequencing use cases - all tied explicitly to the PWP package with PowerPAD™ and R-suffix tape-and-reel configuration.
Technical Context
The TPS54680PWPR implements a voltage-mode PWM control architecture with an internal error amplifier (90–110 dB open-loop gain, 3–5 MHz unity-gain bandwidth) and precision 0.891-V reference trimmed during production. Its TRACKIN pin enables analog voltage tracking for coordinated power-up/down of core and I/O rails without external circuitry.
It integrates matched 30-mΩ high-side and low-side MOSFETs (tested at VI = 6 V), features adaptive dead-time control (25 ns), and includes comprehensive protection: peak current limiting (7.2–12 A trip range), thermal shutdown (135–165 °C), and UVLO (2.95 V start, 2.8 V stop, 0.16 V hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 6.0 V - supports standard 3.3 V and 5 V intermediate bus architectures without pre-regulation. |
| Continuous Output Current | 6 A - sustained delivery enabled by thermally enhanced 28-pin PWP PowerPAD™ package with 18.2 °C/W θJA (with solder). |
| Reference Voltage Accuracy | ±1% (0.882–0.900 V) - ensures tight output regulation across temperature and load for FPGA core supplies. |
| Switching Frequency | Fixed 350 kHz or adjustable 280–700 kHz via RT resistor - allows EMI optimization and inductor size trade-offs. |
| Power Good Threshold | 90% of Vref (0.792–0.810 V) - provides reliable reset signaling for processors when output reaches valid regulation window. |
| Thermal Shutdown Trip | 135–165 °C - protects against sustained overload or poor PCB thermal design while allowing safe operation up to 125 °C junction. |
| Quiescent Current | 11–23.5 mA (depending on fSW) - balances light-load efficiency and fast transient response in always-on subsystems. |
Pinout & Package
The TPS54680PWPR is housed in a thermally enhanced 28-pin HTSSOP (PWP) package with exposed PowerPAD™ thermal pad - designed for direct soldering to large copper areas to dissipate up to 5.49 W at TA = 25 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND (Pin 1) | Analog ground reference | Return path for compensation network, slow-start capacitor, VBIAS bypass, and RT resistor - must be isolated from PGND except at single-point PowerPAD connection. |
| VSENSE (Pin 2) | Error amplifier inverting input | Connects to output voltage divider - senses regulated output and compares against 0.891-V internal reference for closed-loop control. |
| COMP (Pin 3) | Error amplifier output | Drives external Type II/III compensation network between COMP and VSENSE - sets loop stability and transient response. |
| PWRGD (Pin 4) | Open-drain power-good indicator | Sinks current when VSENSE ≥ 90% Vref; used for processor reset or sequencer enable in multi-rail systems. |
| BOOT (Pin 5) | Bootstrap supply node | Connects 0.022–0.1 µF ceramic capacitor to PH - generates floating gate drive voltage for high-side MOSFET. |
| PH (Pins 6–14) | Phase node / power switch junction | High-current switching node connecting internal MOSFETs to external output inductor - requires minimal trace area to reduce EMI. |
| RT (Pin 28) | Frequency setting input | Resistor from RT to AGND sets switching frequency: open = 350 kHz; 68 kΩ = ~700 kHz; 180 kΩ = ~280 kHz. |
| ENA (Pin 27) | Digital enable input | Logic-high (>1.4 V) enables operation; logic-low (<0.82 V) disables PWM and places device in low-IQ state (≤1.4 mA). |
| TRACKIN (Pin 26) | External tracking reference input | High-impedance input that overrides internal reference during startup - enables simultaneous ramp-up/down with other regulators. |
| VBIAS (Pin 25) | Internal bias regulator output | Supplies stable ~2.8 V to internal circuits; requires 0.1–1.0 µF X5R/X7R ceramic bypass to AGND near the pin. |
| VIN (Pins 20–24) | Main input power supply | Connects to 3–6 V source; each pin carries portion of input current - must be bypassed with ≥10 µF ceramic capacitor close to PGND pins. |
| PGND (Pins 15–19) | Power ground return | High-current return for low-side MOSFET and input/output capacitors - routed separately from AGND and connected only at PowerPAD. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30-mΩ MOSFETs | Enables 6-A continuous output without external switches - reduces BOM count and layout complexity in space-constrained PoL designs. |
| Tracking via TRACKIN pin | Supports analog-controlled sequencing of multiple rails (e.g., core before I/O) without external op-amps or timers - simplifies system-level power management. |
| Adjustable 280–700 kHz fSW | Allows optimization of inductor size, efficiency, and EMI profile - higher frequencies shrink magnetics but increase switching losses. |
| PowerPAD™ thermal package | 28-pin PWP with exposed thermal pad achieves 18.2 °C/W θJA - eliminates need for heatsinks in 6-A applications with proper PCB copper area. |
| True 0.891-V trimmed reference | Factory-trimmed bandgap reference ensures ±1% output accuracy over temperature - critical for low-voltage FPGA and ASIC core supplies. |
| Comprehensive protection suite | Includes peak current limit, thermal shutdown, UVLO, and power-good monitoring - enables robust operation in industrial and telecom environments. |
Applications
| FPGA Core Supply | Multi-Rail Sequencing System |
|---|---|
|
Use Scenario: Providing tightly regulated 0.9–1.2 V core voltage to Xilinx or Intel FPGAs requiring strict power-up timing relative to I/O banks. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 6 A with tracking-enabled startup/shutdown coordination via TRACKIN pin. Use Value: Eliminates external sequencing ICs by using analog tracking - reduces component count and ensures sub-µs timing alignment between core and I/O rails. |
Use Scenario: Coordinating power delivery to heterogeneous SoCs with independent core, memory, and peripheral voltage domains. IC Role / Device Role / Timing Role: One of multiple TPS54680PWPR units configured in master-slave tracking mode to enforce defined voltage ramp order and hold times. Use Value: Achieves deterministic power sequencing without firmware or complex digital controllers - meets JEDEC JESD8-12A requirements for DDR memory interfaces. |
| High-Density Telecom Board | Optical Line Card PSU |
|
Use Scenario: Point-of-load conversion on compact 3U telecom blades where board area and thermal headroom are constrained. IC Role / Device Role / Timing Role: High-efficiency 6-A buck converter operating at 700 kHz to minimize inductor footprint while maintaining >85% efficiency at full load. Use Value: Delivers 6 A in 6.4 mm × 9.7 mm footprint with PowerPAD™ thermal performance - avoids forced-air cooling and enables conduction-only thermal management. |
Use Scenario: Generating stable 1.8 V and 2.5 V rails for laser driver ICs and transimpedance amplifiers in fiber-optic line cards. IC Role / Device Role / Timing Role: Low-noise synchronous buck regulator with <20 mVpp output ripple and fast load transient response (<100 µs settling). Use Value: Maintains signal integrity in analog front-ends by minimizing switching noise coupling - verified by 0.03%/A load regulation and 70 ns PWM comparator delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54616PWPR | Fixed 3.3-V output; no TRACKIN pin; same PWP package and 6-A rating. | Lacks tracking and adjustable output - suitable only for standalone 3.3-V I/O rails, not core sequencing. | Select when fixed 3.3 V is required and sequencing is handled externally or not needed. |
| TPS54672PWPR | Same pinout and package; supports active terminal mode for dynamic output adjustment via external DAC. | Offers programmable output (0.6–3.3 V) and margining capability - adds flexibility but increases design complexity. | Choose when output voltage tuning or production margin testing is required alongside sequencing. |
Compared with TPS54680PWPR, TPS54616PWPR sacrifices tracking and adjustability for simplicity in fixed-output roles, while TPS54672PWPR extends functionality with programmability at the cost of added external components - making TPS54680PWPR the optimal balance for deterministic dual-rail sequencing.
Availability
TPS54680PWPR is available at Aetrix Electronics and suitable for FPGA power delivery, telecom baseband processing, and optical line card designs requiring stable component supply, long-term lifecycle support, and tape-and-reel packaging for automated assembly.
Supply support for TPS54680PWPR 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 TPS54680PWPR belongs to TI's SWIFT™ family of integrated synchronous buck regulators, engineered specifically for high-current, low-voltage point-of-load applications demanding precise sequencing, thermal efficiency, and minimal external components.
FAQ
What is the maximum continuous output current supported by the TPS54680PWPR?
The TPS54680PWPR supports 6 A of continuous output current under recommended thermal conditions - achieved through its integrated 30-mΩ MOSFETs and 28-pin PWP PowerPAD™ package, which delivers 5.49 W power dissipation capability at 25 °C ambient with proper PCB copper area and thermal vias.
Does the TPS54680PWPR require external MOSFETs?
No, the TPS54680PWPR integrates both high-side and low-side power MOSFETs (30-mΩ typical RDS(on)) - eliminating the need for external switches and reducing total solution size, component count, and layout complexity in 6-A PoL applications.
How does the TRACKIN pin function in the TPS54680PWPR?
The TRACKIN pin on the TPS54680PWPR accepts an external voltage reference to synchronize startup and shutdown timing with other regulators - enabling precise analog-based power sequencing (e.g., core before I/O) without additional ICs or digital controllers.
What package type and thermal enhancements does the TPS54680PWPR use?
The TPS54680PWPR uses the 28-pin HTSSOP (PWP) package with an exposed PowerPAD™ thermal pad - designed for direct soldering to large PCB copper areas and thermal vias to achieve 18.2 °C/W junction-to-ambient thermal resistance and reliable 6-A operation without heatsinks.
Can the switching frequency of the TPS54680PWPR be adjusted, and if so, how?
Yes, the TPS54680PWPR supports adjustable switching frequency from 280 kHz to 700 kHz by connecting a resistor between the RT pin and AGND - with 68 kΩ yielding ~700 kHz, 100 kΩ ~500 kHz, and 180 kΩ ~280 kHz; leaving RT open defaults to 350 kHz.
TPS54680PWPR 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:
- Last Time Buy
- Applications:
- Converter, Distributed Power Systems
- Voltage - Input:
- 3V ~ 6V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.9V ~ 4.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
TPS54680PWPR FAQ
1.How can I place an order for TPS54680PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54680PWPR 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 TPS54680PWPR reliable?
The price and inventory of TPS54680PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54680PWPR is usually 5 days.
3.What payment methods are accepted for TPS54680PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54680PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54680PWPR?
TPS54680PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54680PWPR 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 TPS54680PWPR?
For technical support, including TPS54680PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54680PWPR requirements.
6.How does Aetrix verify that TPS54680PWPR is sourced from the original manufacturer or authorized distributors?
All TPS54680PWPR 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 TPS54680PWPR meets industry standards.
7.What is the process for return or replacement of TPS54680PWPR?
All TPS54680PWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS54680PWPR, 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 TPS54680PWPR part is unused and in its original packaging.
Return procedure for TPS54680PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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