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Texas Instruments TPS54810PWPRG4
- Part No.:
- TPS54810PWPRG4
- Manufacturer:
- Texas Instruments
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54810PWPRG4.pdf
- Description:
- IC REG BUCK ADJ 8A 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,017
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Product details
Overview
TPS54810PWPRG4 from Texas Instruments is a 4-V to 6-V input, 8-A synchronous buck PWM converter with integrated high- and low-side MOSFETs (30 mΩ typical rDS(on)), adjustable 0.9-V to 3.3-V output voltage (±1% accuracy), externally compensated control loop, and selectable switching frequency from 280 kHz to 700 kHz. It serves as a point-of-load regulator for FPGA, DSP, and microprocessor power delivery in compact, thermally constrained systems.
For engineers reviewing the TPS54810PWPRG4 datasheet, TPS54810PWPRG4 pinout, TPS54810PWPRG4 application, or TPS54810PWPRG4 equivalent, key selection criteria include its 28-pin HTSSOP PowerPAD™ package with dual ground planes (AGND/PGND), thermal shutdown at 150°C, UVLO with 3.8 V start threshold, and support for external synchronization or resistor-programmed frequency tuning.
Technical Context
The TPS54810PWPRG4 implements a voltage-mode PWM architecture with a high-gain (90–110 dB), wide-bandwidth (3–5 MHz) error amplifier enabling stable compensation across diverse L-C filter combinations. Its adaptive dead-time control and leading-edge blanking (100 ns) ensure robust operation under fast load transients and prevent shoot-through in the integrated 30-mΩ/30-mΩ MOSFET pair.
It features dual-function pins: SS/ENA provides enable control and programmable soft-start via external capacitor; SYNC selects between fixed 350/550 kHz modes or enables external clock synchronization (330–700 kHz); RT sets frequency via resistor (68 kΩ–180 kΩ) when SYNC is floating. The VBIAS regulator supplies 2.8 V ±0.1 V to internal circuitry and supports external bypassing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.0 V to 6.0 V - Supports direct regulation from standard 5-V distributed bus without pre-regulation. |
| Output Current | 8 A continuous - Delivers full rated current with thermal management via PowerPAD™ soldered to PCB ground plane. |
| Output Voltage Accuracy | ±1% over line/load/temperature - Ensures tight regulation for core voltages of modern FPGAs and DSPs. |
| Switching Frequency | 280–700 kHz (adjustable) - Enables optimization of size (higher fSW) vs. efficiency (lower fSW) in space-constrained designs. |
| MOSFET rDS(on) | 30 mΩ (high- and low-side, typ. at VIN = 4.5 V) - Minimizes conduction loss and thermal rise at 8-A load. |
| UVLO Threshold | 3.80 V start / 3.50 V stop - Prevents erratic startup during brownout conditions on 5-V rail. |
| Thermal Shutdown | 150°C trip (10°C hysteresis) - Protects device during sustained overload or inadequate heatsinking. |
Pinout & Package
The TPS54810PWPRG4 is housed in a thermally enhanced 28-pin HTSSOP (PWP) PowerPAD™ package (6.4 mm × 9.7 mm) with an exposed thermal pad soldered to AGND for efficient heat dissipation. Dual ground domains-AGND (pin 1) for analog signals and PGND (pins 15–19) for high-current return paths-are physically separated on-die and require careful PCB layout per TI's land pattern guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (pins 20–24) | Power input supply | Bypassed individually with 10-µF ceramic caps to PGND; shared VIN routing minimizes input loop inductance. |
| PH (pins 6–14) | Phase node | High dv/dt switching node connecting internal MOSFETs to output inductor; requires minimal trace area to reduce EMI. |
| BOOT (pin 5) | Bootstrap supply | Drives high-side gate via 0.022–0.1-µF ceramic cap to PH; placement adjacent to IC critical for gate drive integrity. |
| VSENSE (pin 2) | Error amplifier inverting input | Connects to output divider; high-impedance node (60–250 nA bias) sensitive to noise coupling from PH or PGND. |
| COMP (pin 3) | Error amplifier output | Interface for Type II/III compensation network; slew rate 1.0–1.4 V/µs limits bandwidth but ensures stability. |
| SS/ENA (pin 26) | Enable & soft-start control | Logic-enable threshold 1.2 V; external capacitor extends startup time linearly (≈0.7 V / 5 µA per µF). |
| RT (pin 28) | Frequency setting | Resistor to AGND sets fSW; 71.5 kΩ yields 700 kHz - used in reference design for high-density layouts. |
| PWRGD (pin 4) | Power-good indicator | Open-drain output asserts high-Z when VSENSE ≥ 90% VREF; sinks 2.5 mA max at ≤0.3 V saturation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30-mΩ MOSFETs | Eliminates external power switches and reduces board area by >40% vs. controller + discrete FET solution. |
| Externally compensated error amplifier | Supports flexible L-C filter selection (e.g., 0.65 µH + 66 µF) while maintaining phase margin >45° across operating conditions. |
| Programmable soft-start | Internal 3.35-ms ramp plus external capacitor extension enables controlled inrush limiting for multi-rail sequencing. |
| PowerPAD™ thermal interface | Reduces θJA to 18.2°C/W (with solder) - enables 8-A operation without heatsink on 3″×3″ 4-layer board. |
| SYNC pin frequency selection | Enables deterministic timing alignment with system clocks or noise-sensitive bands via external oscillator injection. |
Applications
| FPGA Core Supply | DSP Point-of-Load Regulation |
|---|---|
|
Use Scenario: Providing 1.2-V/1.8-V core voltage to Xilinx Artix-7 or Intel Cyclone V FPGA under dynamic load steps up to 6 A/µs. IC Role / Device Role / Timing Role: Primary synchronous buck regulator with fast transient response (<200 ns current limit reaction) and PWRGD signaling for FPGA configuration lock. Use Value: Maintains <±1% output regulation during 0–8-A load steps, minimizing logic errors and enabling reliable JTAG programming. |
Use Scenario: Delivering 1.0-V/1.2-V supply to TI C66x DSP in wireless baseband processing unit with strict ripple budget (<20 mVpp). IC Role / Device Role / Timing Role: High-efficiency DC/DC converter using 700-kHz switching and low-ESR ceramic output capacitors to suppress switching noise. Use Value: Achieves 92% peak efficiency at 6-A load, reducing thermal load in sealed enclosure and extending mean time between failures. |
| Optical Transceiver Bias | Notebook CPU VRM Stage |
|
Use Scenario: Generating stable 3.3-V bias for SFP+ laser driver ICs in 10-Gbps optical line cards with EMI-sensitive analog front-end. IC Role / Device Role / Timing Role: Secondary regulated supply with SYNC pin locked to system master clock to avoid beat frequencies in RF bands. Use Value: Enables <−60 dBc conducted EMI at 330–700 kHz band through synchronized switching, meeting FCC Class B limits. |
Use Scenario: Intermediate 1.5-V supply feeding downstream multiphase buck for Intel Core i7 mobile CPU in ultrabook platform. IC Role / Device Role / Timing Role: Pre-regulator stepping 5-V main rail down to optimized intermediate bus voltage before final CPU core conversion. Use Value: Improves overall system efficiency by 3–5% versus direct 5-V-to-core conversion, extending battery runtime. |
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 (RHL) package, identical 4–6-V input and 8-A rating, but uses current-mode control and fixed 600-kHz fSW. | Lacks RT/SYNC flexibility and external compensation; better suited for designs prioritizing simplicity over tuning headroom. | Select TPS54821RHLR only if fixed-frequency, current-mode stability and smaller footprint (5 mm × 6 mm) outweigh need for frequency adjustment or custom loop shaping. |
| MP8765GQ-Z | Monolithic 4–16-V input, 8-A buck with integrated MOSFETs (5.5 mΩ/2.2 mΩ), but no PowerPAD™ thermal pad and different pinout. | Wider input range suits 12-V intermediate bus; lacks dedicated VBIAS and separate AGND/PGND pins, limiting noise-sensitive analog performance. | Choose MP8765GQ-Z for higher-input systems where thermal constraints allow standard QFN mounting, not for low-noise FPGA/DSP core rails. |
Compared with TPS54810PWPRG4, TPS54821RHLR offers simplified layout and faster transient response due to current-mode control but sacrifices frequency programmability and compensation flexibility; MP8765GQ-Z supports wider input voltage and lower RDS(on) but lacks the dual-ground isolation and thermal robustness needed for sustained 8-A operation in dense PCBs.
Availability
TPS54810PWPRG4 is available at Aetrix Electronics and suitable for FPGA power delivery, DSP point-of-load regulation, optical transceiver biasing, and notebook CPU intermediate bus applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS54810PWPRG4 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 TPS54810PWPRG4 belongs to TI's SWIFT™ family of integrated synchronous buck regulators, designed specifically for high-current, low-voltage point-of-load applications in networking, computing, and communications infrastructure where thermal density and transient performance are critical.
FAQ
What is the maximum continuous output current of the TPS54810PWPRG4?
The TPS54810PWPRG4 delivers 8 A continuous output current under recommended thermal conditions - achieved by soldering the PowerPAD™ thermal pad to a minimum 3″×3″ 1-oz copper ground plane with 12 thermal vias. Derating applies above 70°C ambient; at 85°C, max output drops to 2.20 W dissipation, supporting ~5.5 A at 1.2 V.
Does the TPS54810PWPRG4 require external compensation components?
Yes, the TPS54810PWPRG4 uses an externally compensated voltage-mode control architecture. A Type II or Type III compensation network must be connected between COMP (pin 3) and VSENSE (pin 2), typically using resistors and capacitors selected per TI's WEBENCH® or SWIFT™ Designer tool to ensure stability across line, load, and temperature.
How does the SS/ENA pin function in the TPS54810PWPRG4?
The SS/ENA pin on the TPS54810PWPRG4 serves dual roles: as an enable input (logic-high >1.2 V activates regulation) and as a soft-start timing node. When a capacitor is connected from SS/ENA to AGND, it extends the internal 3.35-ms ramp linearly - e.g., a 0.047-µF cap increases total startup time to ~7.5 ms, limiting inrush current during power-up sequences.
Can the TPS54810PWPRG4 synchronize to an external clock?
Yes, the TPS54810PWPRG4 supports external synchronization via the SYNC pin over 330–700 kHz. To use this mode, apply a clean CMOS clock signal to SYNC and connect an RT resistor set to ≈85% of the target frequency (e.g., 68 kΩ for 600-kHz sync). This avoids beat frequencies and aligns switching noise for EMI-sensitive systems.
What is the purpose of the separate AGND and PGND pins on the TPS54810PWPRG4?
The TPS54810PWPRG4 separates analog ground (AGND, pin 1) and power ground (PGND, pins 15–19) to isolate noise-sensitive feedback and bias circuitry from high-current switching return paths. AGND connects compensation components, VBIAS bypass, and RT/SS/ENA; PGND carries inductor and capacitor return currents. They must join at a single point under the PowerPAD™ to prevent ground bounce.
TPS54810PWPRG4 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:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.9V
- Voltage - Output (Max):
- 3.3V
- Current - Output:
- 8A
- Frequency - Switching:
- 350kHz, 550kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
TPS54810PWPRG4 FAQ
1.How can I place an order for TPS54810PWPRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54810PWPRG4 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 TPS54810PWPRG4 reliable?
The price and inventory of TPS54810PWPRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54810PWPRG4 is usually 5 days.
3.What payment methods are accepted for TPS54810PWPRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54810PWPRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54810PWPRG4?
TPS54810PWPRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54810PWPRG4 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 TPS54810PWPRG4?
For technical support, including TPS54810PWPRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54810PWPRG4 requirements.
6.How does Aetrix verify that TPS54810PWPRG4 is sourced from the original manufacturer or authorized distributors?
All TPS54810PWPRG4 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 TPS54810PWPRG4 meets industry standards.
7.What is the process for return or replacement of TPS54810PWPRG4?
All TPS54810PWPRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS54810PWPRG4, 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 TPS54810PWPRG4 part is unused and in its original packaging.
Return procedure for TPS54810PWPRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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