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Texas Instruments TPS54612PWPR
- Part No.:
- TPS54612PWPR
- Manufacturer:
- Texas Instruments
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54612PWPR.pdf
- Description:
- IC REG BUCK 1.2V 6A 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:380
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Product details
Overview
TPS54612PWPR from Texas Instruments is a 3-V to 6-V input, 6-A output synchronous buck PWM converter with integrated 30-mΩ high- and low-side MOSFETs, fixed 1.2-V output voltage (±2% over temperature/load), internal compensation, and 350/550-kHz selectable switching frequency. It delivers point-of-load regulation for FPGAs and microprocessors in space-constrained industrial and telecom systems.
For engineers reviewing the TPS54612PWPR datasheet, TPS54612PWPR pinout, TPS54612PWPR application, or TPS54612PWPR equivalent, key selection criteria include its thermally enhanced HTSSOP-28 PowerPAD™ package, powergood signaling, UVLO with 2.95-V start threshold, and support for external slow-start capacitor adjustment - all critical for reliable power sequencing in high-density digital systems.
Technical Context
The TPS54612PWPR implements a voltage-mode synchronous buck topology with an internally compensated error amplifier (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-limit response.
It integrates dual 30-mΩ MOSFETs rated for 12-A peak current, supports continuous conduction mode (CCM) operation across full load range, and uses a precision 0.891-V reference with ±0.2% drift over –40°C to 125°C junction temperature - enabling stable 1.2-V output regulation under fast transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 6.0 V - compatible with 3.3-V and 5-V intermediate bus architectures without pre-regulation. |
| Output Voltage | Fixed 1.2 V ±2% - factory-trimmed for direct core supply to DSPs, FPGAs, and ASICs requiring tight tolerance. |
| Continuous Output Current | 6 A - sustained delivery without thermal derating on standard 4-layer PCB with PowerPAD™ soldered. |
| Switching Frequency | 350 kHz or 550 kHz (pin-selectable via FSEL) - balances efficiency vs. size; supports external RT resistor for 280–700 kHz tuning. |
| Current Limit Threshold | 7.2–12 A (input-voltage dependent) - cycle-by-cycle protection with 200 ns response time prevents MOSFET failure during overload. |
| Powergood Accuracy | 90% of VREF (±3%) - enables precise system reset and supply sequencing for processors requiring strict rail monitoring. |
| Junction Temp Range | –40°C to 125°C - qualified for industrial and networking equipment operating in uncontrolled ambient environments. |
Pinout & Package
TPS54612PWPR is housed in a thermally enhanced 28-pin HTSSOP (PWP) package with exposed PowerPAD™ thermal pad, requiring solder connection to AGND plane for optimal thermal performance (RθJA = 18.2°C/W with solder).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND (Pin 1) | Analog ground reference | Return for SS/ENA capacitor, VBIAS bypass, RT/FSEL bias - must be isolated from PGND except at single-point PowerPAD™ connection. |
| VSENSE (Pin 2) | Error amplifier inverting input | Direct connection to output voltage feedback node - determines regulation accuracy and transient response fidelity. |
| PWRGD (Pin 4) | Open-drain powergood output | Signals valid output when VSENSE ≥ 90% VREF; pulled low during UVLO, shutdown, or thermal fault - used for processor reset coordination. |
| BOOT (Pin 5) | Bootstrap supply for high-side driver | Connects to PH through 0.022–0.1 µF ceramic capacitor - enables floating gate drive for integrated high-side MOSFET. |
| PH (Pins 6–14) | Phase node | High-current switching node connecting internal MOSFETs to external inductor - requires short, low-inductance layout to minimize EMI and voltage spikes. |
| PGND (Pins 15–19) | Power ground return | High-current return path for low-side MOSFET and input/output capacitors - must tie directly to large copper pour and input/output cap negatives. |
| RT (Pin 28) | Frequency setting resistor input | Resistor to AGND sets switching frequency from 280–700 kHz; open for internal 350/550 kHz selection. |
| SS/ENA (Pin 26) | Slow-start/enable control | Logic-enable input (1.2 V threshold) and external capacitor terminal - controls startup slew rate and inrush current limiting. |
| VBIAS (Pin 25) | Internal bias regulator output | Supplies 2.7–2.9 V to internal circuitry; bypassed with 0.1–1 µF ceramic capacitor to AGND - may serve as analog reference for external circuits. |
| VIN (Pins 20–24) | Main input supply | 3–6 V input for power switches and internal LDO; each pin must be individually bypassed to PGND with 1–10 µF ceramic capacitor near package edge. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30-mΩ MOSFETs | Eliminates external power switches and reduces board area by >40% versus discrete controller + DrMOS solutions. |
| Internally compensated loop | Enables stable operation with only 4.7–10 µH inductor and standard output capacitor - no external compensation network required. |
| Fast transient response | 10–20 µs recovery time from 50% load step - maintains <1% output deviation for FPGA core voltage droop requirements. |
| Thermal shutdown with hysteresis | 150°C trip point with 10°C hysteresis - prevents thermal runaway during sustained overload while allowing safe restart after cooling. |
| Adjustable slow-start | Internal 3.3-ms ramp (for 1.2-V output) extendable via external capacitor - eliminates inrush current damage to input capacitors and upstream supplies. |
Applications
| Point-of-Load Regulation | FPGA Core Supply |
|---|---|
Use Scenario: Delivering tightly regulated 1.2-V power to Xilinx Artix-7 FPGA banks with dynamic current demand up to 5.5 A. IC Role / Device Role / Timing Role: Primary DC/DC regulator providing core voltage with fast transient response and powergood signaling for configuration sequencing. Use Value: Maintains <±1.5% output deviation during 3-A/µs load steps, ensuring reliable bitstream loading and logic operation without brownout resets. |
Use Scenario: Powering Altera Cyclone V SoC HPS core at 1.2 V in a compact industrial gateway with limited PCB real estate. IC Role / Device Role / Timing Role: Synchronous buck converter with integrated MOSFETs and thermal-aware shutdown for unattended operation. Use Value: Delivers full 6-A load continuously at 70°C ambient using standard 4-layer board - eliminates need for heatsink or forced air. |
| Telecom Line Card | Network Processor Supply |
Use Scenario: Generating 1.2-V supply for TI Keystone II K2E multi-core DSP in a 1RU telecom line card with strict thermal envelope. IC Role / Device Role / Timing Role: High-efficiency intermediate bus converter stepping 5-V backplane down to processor core voltage. Use Value: Achieves >92% peak efficiency at 4-A load, reducing board-level heat generation by 1.8 W versus comparable discrete solution. |
Use Scenario: Providing 1.2-V rail to Broadcom BCM58712 network processor in a Layer 3 switch with hot-swap capability. IC Role / Device Role / Timing Role: Fault-tolerant regulator with UVLO, powergood, and thermal shutdown for hot-plug power domain isolation. Use Value: PWRGD signal coordinates with system manager IC to delay processor boot until rail stability confirmed - preventing firmware corruption. |
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 1.2-V fixed output, but 20-V max input and 6-A rating; uses QFN-14 package with different pinout and no PowerPAD™. | Designed for higher-input industrial systems (12–20 V); lacks integrated BOOT capacitor support and has lower thermal performance (RθJA = 32°C/W). | Select only if input exceeds 6 V or QFN footprint is mandatory; not drop-in due to pinout and thermal interface mismatch. |
| MP2315GJ-Z | 1.2-V fixed output, 6-A rating, 4.5–26-V input; smaller TSOT23-8 package; no powergood or adjustable frequency. | Targeted at cost-sensitive consumer applications; lacks PWRGD, SS/ENA flexibility, and thermal robustness for sustained 6-A loads. | Use where board space is critical and system-level sequencing is handled externally; verify thermal margin at full load in target enclosure. |
Compared with TPS54612PWPR, TPS54620RGYT supports wider input range but sacrifices thermal efficiency and pin compatibility, while MP2315GJ-Z trades feature completeness and thermal reliability for minimal footprint - making TPS54612PWPR the optimal choice for industrial FPGA and DSP point-of-load designs requiring guaranteed 6-A delivery and robust fault management.
Availability
TPS54612PWPR is available at Aetrix Electronics and suitable for FPGA core supplies, telecom line cards, and industrial embedded controllers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for TPS54612PWPR 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 and embedded processing technologies, with decades of expertise in power management IC design and manufacturing.
The TPS5461x family was engineered specifically for high-current, low-voltage point-of-load conversion in dense digital systems - emphasizing integration, thermal resilience, and seamless processor interface via powergood and enable control.
FAQ
What is the maximum continuous output current of the TPS54612PWPR?
The TPS54612PWPR delivers 6 A continuously under recommended operating conditions (TJ ≤ 125°C, 4-layer PCB with PowerPAD™ soldered). Its 30-mΩ MOSFETs and thermal design support this rating without external heatsinking in typical industrial airflow environments.
Does the TPS54612PWPR require external compensation components?
No, the TPS54612PWPR features internal compensation optimized for standard 4.7–10 µH inductors and common output capacitor values. External compensation is unnecessary, simplifying design and reducing BOM count while maintaining stability across temperature and load.
How does the powergood (PWRGD) pin function on the TPS54612PWPR?
The PWRGD pin on the TPS54612PWPR is an open-drain output that goes high-impedance when VSENSE ≥ 90% of the 0.891-V reference (i.e., ≥0.802 V for 1.2-V output), and pulls low during UVLO, SS/ENA disable, thermal shutdown, or output undervoltage - enabling precise system reset coordination.
Can the switching frequency of the TPS54612PWPR be adjusted, and how?
Yes, the TPS54612PWPR supports three frequency modes: 350 kHz (FSEL ≤ 0.8 V), 550 kHz (FSEL ≥ 2.5 V), or externally adjustable 280–700 kHz via resistor from RT to AGND. The RT equation is fSW ≈ 100 kΩ/R, enabling fine-tuning for EMI or efficiency optimization.
What thermal considerations apply to the TPS54612PWPR's PowerPAD™ package?
The TPS54612PWPR's HTSSOP-28 PowerPAD™ requires soldering the exposed thermal pad to a dedicated AGND copper plane with ≥6 thermal vias. With proper layout, it achieves RθJA = 18.2°C/W; omitting solder increases thermal resistance to 40.5°C/W, risking thermal shutdown above 3 A in still-air conditions.
TPS54612PWPR 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):
- 1.2V
- 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
TPS54612PWPR FAQ
1.How can I place an order for TPS54612PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54612PWPR 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 TPS54612PWPR reliable?
The price and inventory of TPS54612PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54612PWPR is usually 5 days.
3.What payment methods are accepted for TPS54612PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54612PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54612PWPR?
TPS54612PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54612PWPR 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 TPS54612PWPR?
For technical support, including TPS54612PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54612PWPR requirements.
6.How does Aetrix verify that TPS54612PWPR is sourced from the original manufacturer or authorized distributors?
All TPS54612PWPR 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 TPS54612PWPR meets industry standards.
7.What is the process for return or replacement of TPS54612PWPR?
All TPS54612PWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS54612PWPR, 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 TPS54612PWPR part is unused and in its original packaging.
Return procedure for TPS54612PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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