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Texas Instruments TPS54980PWPRG4
- Part No.:
- TPS54980PWPRG4
- Manufacturer:
- Texas Instruments
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54980PWPRG4.pdf
- Description:
- IC REG BUCK ADJ 9A 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,107
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Product details
Overview
TPS54980PWPRG4 from Texas Instruments is a synchronous buck PWM converter optimized for low-voltage, high-current point-of-load regulation. It delivers up to 9 A continuous output current with integrated 15-mΩ high- and low-side MOSFETs, supports adjustable switching frequency from 280 kHz to 700 kHz (or fixed 350 kHz), and features power-up/down tracking via TRACKIN pin for sequencing with FPGAs and DSPs.
For engineers reviewing the TPS54980PWPRG4 datasheet, TPS54980PWPRG4 pinout, TPS54980PWPRG4 application, or TPS54980PWPRG4 equivalent, key selection criteria include its 3 V to 4 V input range, 0.891 V precision reference, thermal shutdown at 150°C, PowerPAD-enabled thermal performance in 28-pin HTSSOP, and support for voltage-tracking in multi-rail systems.
Technical Context
The TPS54980PWPRG4 implements a current-mode synchronous buck architecture with adaptive dead-time control to prevent shoot-through, cycle-by-cycle overcurrent protection using high-side MOSFET current sensing, and an internal 2.8 V UVLO with 0.16 V hysteresis. Its error amplifier provides 110 dB open-loop gain and 5 MHz unity-gain bandwidth, enabling stable compensation with Type 2 or Type 3 networks.
Switching is governed by a programmable oscillator (RT pin) or internal 350 kHz source, with PWM comparator propagation delay of 85 ns and minimum controllable on-time of 200 ns. The device integrates a 2.8 V bias regulator (VBIAS), power-good monitoring at 90% Vref with 3% hysteresis, and true analog ground (AGND) / power ground (PGND) separation for noise-sensitive feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 4.0 V - Supports 3.3 V rail with 0.3 V headroom; UVLO start at 2.95 V prevents premature startup. |
| Output Current | 9 A continuous - Achieved with matched 15-mΩ high- and low-side MOSFETs; peak current limit set at 15 A. |
| Reference Voltage | 0.891 V ±0.009 V - Trimmed bandgap reference enables ±1% output accuracy across temperature and load. |
| Switching Frequency | 350 kHz (fixed) or 280–700 kHz (adjustable via RT resistor) - Enables EMI optimization and inductor size trade-offs. |
| Thermal Shutdown | 150°C trip with 10°C hysteresis - Protects against sustained overload; PowerPAD package reduces θJA to 14.4°C/W with soldered thermal pad. |
| Power Good Threshold | 90% of Vref (0.802 V typical) - Provides reliable reset signaling for processors when output reaches regulation window. |
| Quiescent Current | 17 mA at 350 kHz - Low enough for high-efficiency operation at light loads; drops to 1.4 µA in shutdown. |
Pinout & Package
The TPS54980PWPRG4 is housed in a thermally enhanced 28-pin HTSSOP (PWP) PowerPAD™ package measuring 6.4 mm × 9.7 mm, with an exposed thermal pad requiring solder connection to AGND for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND (Pin 1) | Analog ground reference | Return path for COMP, VSENSE, VBIAS, RT; must be tied to PowerPAD and isolated from noisy PGND traces. |
| VSENSE (Pin 2) | Error amplifier inverting input | Connects to output divider; senses regulated voltage with 60–250 nA input bias current for high-accuracy feedback. |
| COMP (Pin 3) | Error amplifier output | Drives external Type 2/3 compensation network; 1.4 V/µs slew rate supports fast transient response. |
| PWRGD (Pin 4) | Open-drain power-good indicator | Sinks 2.5 mA at ≤0.3 V when VSENSE ≥ 90% Vref; used for processor reset or system sequencing control. |
| BOOT (Pin 5) | Bootstrap supply for high-side driver | Requires 0.022–0.1 µF ceramic capacitor to PH; enables efficient gate drive without external charge pump. |
| PH (Pins 6–14) | Phase node / switch-node output | High-current connection to output inductor; multiple parallel pins reduce resistance and inductance in high-9A path. |
| RT (Pin 28) | Oscillator frequency setting input | Resistor to AGND sets frequency: 180 kΩ → 280 kHz, 100 kΩ → 500 kHz, 68 kΩ → 700 kHz. |
| ENA (Pin 27) | Enable control input | Logic-high threshold 1.2 V; hysteresis 0.03 V ensures noise immunity; disables all internal circuits when low. |
| TRACKIN (Pin 26) | Tracking reference input | High-impedance input (±1.5 mV offset) for synchronized power-up/down with other regulators in multi-rail systems. |
| VBIAS (Pin 25) | Internal bias regulator output | Supplies 2.7–2.9 V to internal circuitry; requires 0.1–1.0 µF ceramic bypass to AGND for stability. |
| VIN (Pins 20–24) | Main input supply | Accepts 3–4 V input; multiple pins reduce IR drop and improve decoupling; bypass with 10 µF ceramic near PGND. |
| PGND (Pins 15–19) | Power ground return | High-current return for low-side MOSFET and input/output capacitors; must be routed separately from AGND. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 15-mΩ MOSFETs | Enables >90% efficiency at 9 A output without external switches; eliminates gate driver complexity and layout sensitivity. |
| TRACKIN-based sequencing | Allows simultaneous power-up/down with companion regulators (e.g., I/O and core rails), critical for FPGA/DSP voltage ramp compliance. |
| Adjustable 280–700 kHz switching | Permits EMI spread-spectrum tuning and inductor size optimization while maintaining stable loop response up to 75 kHz unity-gain. |
| True dual-ground architecture | Separates AGND (noise-sensitive analog signals) from PGND (high-di/dt power paths), reducing feedback corruption at full load. |
| Adaptive dead-time control | Prevents shoot-through by dynamically delaying high-side turn-on until low-side gate falls below 2 V, and vice versa. |
Applications
| FPGA Core Supply | DSP Point-of-Load Regulation |
|---|---|
|
Use Scenario: Providing tightly regulated 1.8 V core voltage to Xilinx Virtex or Intel Stratix FPGAs during configuration and high-speed operation. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering up to 9 A with precise voltage tracking and fast transient response. Use Value: Meets FPGA core rail tolerance (±3%) and sequencing requirements (Ttrack < 100 µs) while minimizing board area via integrated MOSFETs and PowerPAD thermal design. |
Use Scenario: Supplying 1.2 V or 1.5 V to TI C6000 or Analog Devices SHARC DSPs in telecom baseband processing units. IC Role / Device Role / Timing Role: High-efficiency, low-noise DC/DC converter with programmable frequency to avoid interference with ADC sampling clocks. Use Value: Delivers 92% peak efficiency at 6 A and maintains <15 mV output ripple under dynamic load steps, preserving signal integrity in mixed-signal systems. |
| Optical Transceiver Module | Networking ASIC Power Rail |
|
Use Scenario: Powering 3.3 V I/O and 1.2 V analog front-end in SFP+ or QSFP28 optical modules operating in compact, thermally constrained enclosures. IC Role / Device Role / Timing Role: Dual-rail sequenced regulator supporting hot-plug compliance and controlled power-up/down via TRACKIN and ENA. Use Value: Enables single-chip solution for both rails using external resistor dividers, reducing component count and meeting GR-468 reliability standards via thermal shutdown and current limiting. |
Use Scenario: Delivering 0.9 V to 2.5 V at up to 9 A for Broadcom Tomahawk or Marvell Prestera networking ASICs in 1U switches. IC Role / Device Role / Timing Role: High-current POL regulator with fast load-step response (<50 µs recovery) and remote sense capability via VSENSE. Use Value: Maintains <±1% output regulation across 0–9 A load range and −40°C to 85°C ambient, ensuring deterministic ASIC timing margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54821RHLR | Same 28-pin QFN package, 8 A output, fixed 600 kHz frequency, no TRACKIN pin; lower quiescent current (15 µA shutdown). | Lacks power sequencing capability; suited for single-rail, space-constrained designs where tracking is unnecessary. | Select TPS54821RHLR only if sequencing is not required and higher-frequency operation improves EMI filtering. |
| MP8765GQ-Z | Monolithic 12 A buck, 2.5–6 V input, 300–2.2 MHz adjustable frequency, no integrated TRACKIN but supports external sequencing ICs. | Wider input range and higher current rating; requires external components for tracking; different pinout and thermal pad layout. | Choose MP8765GQ-Z when input exceeds 4 V or >9 A is needed, but expect PCB redesign due to non-pin-compatible footprint. |
Compared with TPS54980PWPRG4, TPS54821RHLR offers lower standby power but omits sequencing-critical for FPGA/DSP systems-while MP8765GQ-Z extends input range and current but sacrifices direct TRACKIN integration, increasing BOM count and layout complexity for multi-rail coordination.
Availability
TPS54980PWPRG4 is available at Aetrix Electronics and suitable for FPGA core supplies, DSP point-of-load regulation, optical transceiver modules, and networking ASIC power rails requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS54980PWPRG4 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-reliability DC/DC conversion solutions.
The TPS54980PWPRG4 belongs to TI's SWIFT™ family of high-current synchronous buck regulators, designed specifically for low-voltage, high-density point-of-load applications in communications infrastructure, computing, and industrial systems demanding precise sequencing and thermal robustness.
FAQ
What is the recommended input voltage range for stable operation of the TPS54980PWPRG4?
The TPS54980PWPRG4 operates reliably within a 3.0 V to 4.0 V input range. Its undervoltage lockout activates at 2.95 V (start) and releases at 2.80 V (stop), ensuring clean startup only when sufficient input headroom exists. Operation outside this range risks instability or shutdown; the device is not rated for inputs below 3.0 V or above 4.0 V per absolute maximum ratings.
How does the TRACKIN pin enable power sequencing in multi-rail systems with the TPS54980PWPRG4?
The TRACKIN pin on the TPS54980PWPRG4 accepts an external voltage reference (e.g., from another regulator's output) to synchronize ramp rates during power-up and power-down. When TRACKIN rises slower than the internal 25 V/ms slope, the TPS54980PWPRG4 output follows it closely-enabling matched sequencing with I/O or memory rails. This eliminates need for external timers or supervisors in FPGA and DSP applications.
Can the TPS54980PWPRG4 be used without connecting the PowerPAD thermal pad?
No-the PowerPAD thermal pad on the TPS54980PWPRG4 must be soldered to a dedicated AGND copper plane with ≥8 thermal vias (0.013" diameter) to achieve rated 9 A performance and thermal limits. Without proper thermal connection, junction temperature exceeds 125°C at <5 A, triggering thermal shutdown. TI's SLMA002 brief and datasheet Figure 11 specify mandatory land pattern and via requirements.
What is the function of the RT pin on the TPS54980PWPRG4, and how is frequency selected?
The RT pin on the TPS54980PWPRG4 sets switching frequency via an external resistor to AGND. Leaving RT open selects fixed 350 kHz operation. Connecting 180 kΩ yields ~280 kHz, 100 kΩ yields ~500 kHz, and 68 kΩ yields ~700 kHz. The relationship follows fSW ≈ 500 kHz × (100 kΩ / R), enabling EMI optimization and inductor sizing flexibility without changing the TPS54980PWPRG4 part number.
Does the TPS54980PWPRG4 support output voltages below 0.9 V?
No-the TPS54980PWPRG4 is specified for output voltages from 0.9 V to 2.5 V, as confirmed in the Ordering Information table and Absolute Maximum Ratings. Its 0.891 V internal reference and error amplifier architecture are trimmed and characterized only within that range; attempting sub-0.9 V operation violates datasheet specifications and may result in regulation inaccuracy or instability.
TPS54980PWPRG4 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:
- Discontinued at Digi-Key
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 4V
- Voltage - Output (Min/Fixed):
- 0.891V
- Voltage - Output (Max):
- 3.6V
- Current - Output:
- 9A
- Frequency - Switching:
- 350kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
TPS54980PWPRG4 FAQ
1.How can I place an order for TPS54980PWPRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54980PWPRG4 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 TPS54980PWPRG4 reliable?
The price and inventory of TPS54980PWPRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54980PWPRG4 is usually 5 days.
3.What payment methods are accepted for TPS54980PWPRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54980PWPRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54980PWPRG4?
TPS54980PWPRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54980PWPRG4 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 TPS54980PWPRG4?
For technical support, including TPS54980PWPRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54980PWPRG4 requirements.
6.How does Aetrix verify that TPS54980PWPRG4 is sourced from the original manufacturer or authorized distributors?
All TPS54980PWPRG4 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 TPS54980PWPRG4 meets industry standards.
7.What is the process for return or replacement of TPS54980PWPRG4?
All TPS54980PWPRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS54980PWPRG4, 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 TPS54980PWPRG4 part is unused and in its original packaging.
Return procedure for TPS54980PWPRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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