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Texas Instruments TPS54980PWPR
- Part No.:
- TPS54980PWPR
- Manufacturer:
- Texas Instruments
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54980PWPR.pdf
- Description:
- IC REG BUCK ADJ 9A 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,313
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Product details
Overview
TPS54980PWPR from Texas Instruments is a synchronous buck PWM converter IC designed for high-current point-of-load regulation in FPGA, ASIC, and microprocessor power delivery. It delivers up to 9 A continuous output current with 15-mΩ integrated MOSFETs, supports fixed 350 kHz or adjustable 280–700 kHz switching frequency, and features power-up/down tracking via TRACKIN pin for precise sequencing in multi-rail systems.
For engineers reviewing the TPS54980PWPR datasheet, TPS54980PWPR pinout, TPS54980PWPR application, or TPS54980PWPR equivalent, key selection criteria include its 3–4 V input range, 0.891 V reference accuracy, thermal shutdown at 150°C, PowerPAD-enabled thermal performance, and compatibility with Type 3 compensation networks for stable 1.8 V core rail generation.
Technical Context
The TPS54980PWPR implements a voltage-mode synchronous buck architecture with an integrated high-performance error amplifier (90–110 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 sensing.
It uses internal UVLO (2.95 V start / 2.80 V stop) and a dedicated VBIAS regulator (2.70–2.90 V output) to supply internal circuitry, while the TRACKIN pin enables external voltage ramp tracking for coordinated power sequencing across multiple rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 4.0 V - Supports standard 3.3 V input rails with 0.3 V headroom margin before UVLO activation. |
| Output Current | 9 A continuous - Delivers full-rated current without external heatsink when PowerPAD is properly soldered per TI layout guidelines. |
| Reference Voltage | 0.891 V ±0.009 V - High-precision trimmed bandgap reference enabling ±0.5% output voltage regulation over temperature and load. |
| Switching Frequency | Fixed 350 kHz or 280–700 kHz adjustable - Configurable via RT-to-AGND resistor; enables EMI optimization and inductor size trade-offs. |
| Thermal Shutdown | 150°C trip with 10°C hysteresis - Protects against sustained overload or poor PCB thermal design; allows safe recovery after cooling. |
| Power Good Threshold | 90% of Vref (0.802 V) - Provides accurate reset signaling for processors when output reaches regulation within 10% tolerance. |
| High-Side rDS(on) | 14–28 mΩ at VIN = 3.6 V - Low conduction loss enables >90% efficiency at 9 A, 1.8 V out, 3.3 V in (per Figure 12). |
Pinout & Package
The TPS54980PWPR is housed in a thermally enhanced 28-pin HTSSOP (PWP) package with exposed PowerPAD for direct PCB thermal coupling. Package dimensions are 6.4 mm × 9.7 mm, and the PowerPAD must be soldered to a dedicated analog ground plane with ≥12 thermal vias per TI's recommended land pattern (SLVS452A, Fig. 11).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND (Pin 1) | Analog ground reference | Return path for COMP, VSENSE, VBIAS, RT; must connect to PowerPAD and isolated analog ground trace-no shared return with PGND. |
| VSENSE (Pin 2) | Error amplifier inverting input | Connects to output voltage divider; senses regulated output with 60–250 nA bias current for minimal divider loading. |
| COMP (Pin 3) | Error amplifier output | Drives external Type 2/3 compensation network; 1.0–1.4 V/µs slew rate supports stable loop response up to 75 kHz unity-gain frequency. |
| PWRGD (Pin 4) | Open-drain power good flag | Sinks 2.5 mA at ≤0.3 V when VSENSE ≥ 90% Vref; used for processor reset or system enable sequencing. |
| BOOT (Pin 5) | Bootstrap supply for high-side driver | Requires 0.022–0.1 µF ceramic capacitor to PH; enables floating gate drive for integrated high-side MOSFET. |
| PH (Pins 6–14) | Phase node / switch-node output | High-current connection to output inductor; all 9 pins must be tied together and routed with minimal loop area to reduce EMI. |
| RT (Pin 28) | Oscillator frequency set input | Connect resistor to AGND to adjust switching frequency: 180 kΩ → 280 kHz, 100 kΩ → 500 kHz, 68 kΩ → 700 kHz. |
| ENA (Pin 27) | Enable control input | Logic-high threshold 0.82–1.40 V; enables full operation; low state reduces quiescent current to ≤1.4 mA. |
| TRACKIN (Pin 26) | Tracking reference input | High-impedance input (±1.5 mV offset) for external voltage ramp; enables simultaneous power-up/down with other regulators. |
| VBIAS (Pin 25) | Internal bias regulator output | Supplies 2.70–2.90 V to internal circuits; requires 0.1–1.0 µF ceramic bypass to AGND; usable as external reference. |
| VIN (Pins 20–24) | Main power input | Accepts 3–4 V input; each pin carries portion of input current; bypass with ≥10 µF ceramic capacitor close to PGND pins. |
| PGND (Pins 15–19) | Power ground return | High-current return for low-side FET and input/output capacitors; connect to large copper areas and tie to AGND at single point under PowerPAD. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 15-mΩ MOSFETs | Enables >90% efficiency at 9 A, 1.8 V output without external switches-reduces BOM count and board area by eliminating discrete FETs and drivers. |
| Power-up/down tracking | TRACKIN pin accepts external voltage ramp to synchronize startup/shutdown timing with I/O or auxiliary rails-eliminates need for external sequencers in multi-supply systems. |
| Thermally enhanced PWP package | PowerPAD structure achieves 14.4 °C/W junction-to-ambient thermal impedance (with solder), allowing full 9 A operation at 70°C ambient without heatsink. |
| Programmable switching frequency | RT pin supports 280–700 kHz adjustment via single resistor-enables EMI spread-spectrum tuning and optimal inductor selection for size vs. efficiency trade-offs. |
| True high-performance error amplifier | 90–110 dB open-loop gain and 3–5 MHz unity-gain bandwidth allow stable compensation with wide range of L/C values-supports flexible filter design for noise-sensitive applications. |
Applications
| FPGA Core Supply | ASIC Point-of-Load Regulation |
|---|---|
|
Use Scenario: Providing tightly regulated 1.8 V core voltage to Xilinx or Intel FPGA during configuration and high-speed operation. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering up to 9 A with fast transient response and precise voltage accuracy. Use Value: Maintains output within ±10 mV of 1.8 V across 0–9 A load steps (Fig. 13), ensuring reliable logic operation and meeting FPGA VCCINT tolerance requirements. |
Use Scenario: Generating 0.9–2.5 V supply for high-performance ASICs in networking line cards requiring strict sequencing with I/O rails. IC Role / Device Role / Timing Role: Sequenced buck controller using TRACKIN to align power-up with companion 3.3 V I/O supply. Use Value: Enables simultaneous ramp-up of core and I/O voltages (Fig. 19), preventing latch-up and meeting ASIC power sequencing specifications (e.g., TI TPS54910 + TPS54980 pairing). |
| Microprocessor DVFS Rail | Optical Transceiver Bias Supply |
|
Use Scenario: Delivering dynamically scaled voltage (e.g., 0.9–1.3 V) to ARM-based SoCs supporting dynamic voltage and frequency scaling. IC Role / Device Role / Timing Role: Adjustable-output buck regulator controlled via DAC-driven VSENSE divider or external reference on TRACKIN. Use Value: Achieves <0.03%/A load regulation (Table 3) and <0.04%/V line regulation-ensures stable core voltage during rapid CPU load transitions. |
Use Scenario: Powering laser diode drivers and transimpedance amplifiers in 10G/25G optical modules where low noise and precise bias are critical. IC Role / Device Role / Timing Role: Low-noise, high-PSRR point-of-load regulator with clean VBIAS output used as analog reference for bias control loops. Use Value: VBIAS output (2.70–2.90 V, ±100 µA load) provides stable reference for DACs and op-amps-minimizing drift in laser bias current calibration. |
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 | 8-A rated, 4.5–20 V input, 3.3–15 V adjustable output; no TRACKIN pin; uses external MOSFETs. | Designed for higher-input industrial rails; lacks built-in tracking-requires external sequencing IC for multi-rail coordination. | Select when input exceeds 4 V or when discrete FET selection is needed for thermal/power optimization beyond integrated limits. |
| LM27402SDX/NOPB | 6-A rated, 4.5–20 V input, supports 200–1000 kHz; no integrated MOSFETs; requires external high/low-side drivers. | Targeted at mid-power telecom supplies; lacks PowerPAD thermal solution and VBIAS regulator-increases component count and layout complexity. | Choose for designs needing >4 V input or custom FET selection, but expect added BOM cost and larger footprint versus TPS54980PWPR's integrated solution. |
Compared with TPS54980PWPR, the TPS54821RHLR offers wider input range but sacrifices tracking capability and integration, while the LM27402SDX/NOPB provides higher frequency flexibility at the cost of external FETs and reduced thermal efficiency-making TPS54980PWPR optimal for compact, thermally constrained 3.3 V input FPGA/ASIC core rails.
Availability
TPS54980PWPR is available at Aetrix Electronics and suitable for FPGA core supplies, ASIC point-of-load regulation, and microprocessor DVFS rails requiring stable component supply, long-term lifecycle support, and consistent thermal performance across production batches.
Supply support for TPS54980PWPR 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 TPS54980PWPR belongs to TI's SWIFT™ family of integrated synchronous buck regulators, engineered specifically for high-density, low-voltage, high-current point-of-load applications in communications infrastructure and computing systems.
FAQ
What is the maximum continuous output current supported by the TPS54980PWPR?
The TPS54980PWPR supports 9 A continuous output current when used with proper PCB thermal design-including soldered PowerPAD, ≥12 thermal vias, and ≥3″×3″ 1-oz copper ground plane. Derating applies above 70°C ambient; at 85°C, max output drops to ~6.8 A per dissipation ratings in SLVS452A.
Does the TPS54980PWPR require external MOSFETs?
No, the TPS54980PWPR integrates both high-side and low-side power MOSFETs with typical rDS(on) of 15 mΩ, eliminating the need for external switches. This integration reduces component count, simplifies layout, and improves efficiency for 3–4 V input, sub-2.5 V output applications.
How does the TRACKIN pin function in the TPS54980PWPR?
The TRACKIN pin on the TPS54980PWPR accepts an external voltage ramp to synchronize startup and shutdown timing with other power rails. When TRACKIN rises slower than the internal 25 V/ms slope, the output follows it closely-enabling precise sequencing without external controllers in multi-supply systems.
What is the purpose of the PowerPAD in the TPS54980PWPR package?
The PowerPAD in the TPS54980PWPR is an exposed thermal pad on the underside of the PWP package that must be soldered to a dedicated analog ground plane. It reduces thermal impedance to 14.4 °C/W (with solder), enabling full 9 A operation at 70°C ambient without heatsinks or forced airflow.
Can the TPS54980PWPR operate with input voltage below 3 V?
No-the TPS54980PWPR has an undervoltage lockout (UVLO) that disables operation until VIN exceeds 2.95 V. Operation below 3.0 V is not supported; minimum recommended input is 3.0 V per recommended operating conditions in SLVS452A.
TPS54980PWPR 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
- 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
TPS54980PWPR FAQ
1.How can I place an order for TPS54980PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54980PWPR 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 TPS54980PWPR reliable?
The price and inventory of TPS54980PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54980PWPR is usually 5 days.
3.What payment methods are accepted for TPS54980PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54980PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54980PWPR?
TPS54980PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54980PWPR 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 TPS54980PWPR?
For technical support, including TPS54980PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54980PWPR requirements.
6.How does Aetrix verify that TPS54980PWPR is sourced from the original manufacturer or authorized distributors?
All TPS54980PWPR 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 TPS54980PWPR meets industry standards.
7.What is the process for return or replacement of TPS54980PWPR?
All TPS54980PWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS54980PWPR, 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 TPS54980PWPR part is unused and in its original packaging.
Return procedure for TPS54980PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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