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Texas Instruments TPS54073PWPG4
- Part No.:
- TPS54073PWPG4
- Manufacturer:
- Texas Instruments
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54073PWPG4.pdf
- Description:
- IC REG BUCK ADJ 14A 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,709
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Product details
Overview
TPS54073PWPG4 from Texas Instruments is a 2.2–4-V input, 14-A synchronous buck converter IC with integrated 8-mΩ high- and low-side MOSFETs, adjustable output down to 0.9 V, fixed/adjustable PWM frequency (350–700 kHz), and disabled sinking during start-up - used for point-of-load regulation in FPGAs and microprocessors.
For engineers reviewing the TPS54073PWPG4 datasheet, TPS54073PWPG4 pinout, TPS54073PWPG4 application, or TPS54073PWPG4 equivalent, key selection criteria include its 14.5-A peak current limit, thermal shutdown at 135°C, PowerPAD™ thermally enhanced 28-pin HTSSOP package, and compatibility with precharge diode configurations for output voltage prebiasing.
Technical Context
The TPS54073PWPG4 implements a voltage-mode PWM control architecture with an internal error amplifier (90–110 dB open-loop gain, 3–5 MHz unity-gain bandwidth), programmable oscillator (via RT resistor or SYNC pin), and adaptive dead-time logic. It features separate PVIN and VIN supplies for optimized biasing and power switching paths.
Its functional block includes undervoltage lockout (UVLO start at 2.9 V, 100-mV hysteresis), internal slow-start (3.35-ms typical), power-good monitoring (93% Vref threshold), and peak-current limiting with 100-ns leading-edge blanking - all operating across –40°C to 125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | PVIN: 2.2–4 V; VIN: 3–4 V - supports low-voltage distributed power rails with independent bias path. |
| Output Current | 14 A continuous, 14.5 A peak - enables single-chip core supply for high-performance DSPs and ASICs. |
| Switching Frequency | Fixed 350/550 kHz or adjustable 280–700 kHz via RT resistor - allows EMI optimization and inductor size trade-offs. |
| Reference Voltage | 0.891 V ±1.0% - sets precise output regulation down to 0.9 V using external resistor divider. |
| Thermal Shutdown | 135°C trip, 10°C hysteresis - protects against sustained overload or poor PCB thermal design. |
| Power MOSFET rDS(on) | 8 mΩ (high-side + low-side combined) at VIN = 3.3 V - ensures >90% efficiency at 14 A, 1.5-V output. |
| Quiescent Current | 3.2–7 mA (active), <140 µA (shutdown) - minimizes no-load power loss in always-on systems. |
Pinout & Package
TPS54073PWPG4 uses a thermally enhanced 28-pin HTSSOP (PWP) PowerPAD™ package measuring 6.4 mm × 9.7 mm with exposed thermal pad soldered to AGND. The PowerPAD requires ≥8 thermal vias (0.013″ diameter) and connection to a dedicated analog ground plane for optimal thermal performance (θJA = 14.87°C/W with solder).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND (Pin 1) | Analog ground reference | Return for COMP, VSENSE, SS/ENA, RT, and VBIAS - must be isolated from PGND except at single-point tie. |
| VSENSE (Pin 2) | Error amplifier inverting input | Connects to output voltage divider - senses regulated output with 0.891-V reference for closed-loop control. |
| COMP (Pin 3) | Error amplifier output | Drives external compensation network (R-C) between COMP and VSENSE to stabilize loop response. |
| PWRGD (Pin 4) | Open-drain power-good indicator | Asserts high when VSENSE > 93% Vref; sinks 2.5 mA max - used for processor reset sequencing. |
| BOOT (Pin 5) | Bootstrap gate drive supply | Connects 0.022–0.1-µF ceramic capacitor to PH - enables high-side MOSFET drive above input rail. |
| PH (Pins 6–14) | Phase node | Internal switch node connecting MOSFETs to output inductor - requires minimized trace area to reduce EMI. |
| PGND (Pins 15–19) | Power ground return | High-current return for low-side FET and input/output capacitors - connect with wide copper to minimize noise. |
| RT (Pin 28) | Oscillator frequency set | Resistor to AGND programs fs from 280–700 kHz - e.g., 68 kΩ yields ~700 kHz for compact magnetics. |
Key Features
| Feature | Design Value |
|---|---|
| Disabled sinking during start-up | Prevents reverse current flow into precharged outputs - eliminates need for external blocking diodes in hot-swap applications. |
| Separate PVIN and VIN supplies | Isolates power-switching path (PVIN/PGND) from control circuitry (VIN/AGND) - improves noise immunity and startup reliability. |
| Integrated 8-mΩ MOSFETs | Enables 14-A operation without external switches - reduces BOM count and layout complexity vs. controller-only solutions. |
| Synchronizable switching frequency | SYNC pin accepts 300–700 kHz external clock or selects internal 350/550 kHz - avoids beat frequencies in multi-rail systems. |
| Thermally enhanced PowerPAD™ | 28-pin HTSSOP with exposed copper pad - achieves 6.72 W power dissipation at 25°C ambient without heatsink. |
Applications
| Core Voltage Regulation | I/O Voltage Regulation |
|---|---|
|
Use Scenario: Supplying 1.5-V core voltage to a high-performance FPGA under dynamic load (0–14 A). IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering tightly regulated core power with fast transient response. Use Value: Integrated 8-mΩ MOSFETs and 14.5-A current limit support full FPGA utilization without external components or thermal derating. |
Use Scenario: Generating 3.3-V I/O rail from a shared 3.3-V system bus with precharged downstream loads. IC Role / Device Role / Timing Role: Secondary buck converter configured with precharge diodes to avoid reverse current at power-up. Use Value: Disabled sinking during start-up prevents backfeeding into precharged 3.3-V bus - eliminates risk of latch-up or damage. |
| Processor Point-of-Load | Networking ASIC Supply |
|
Use Scenario: Providing 0.9-V supply to a PowerPC series microprocessor with strict ripple (<20 mV) and sequencing requirements. IC Role / Device Role / Timing Role: Adjustable-output buck converter with PWRGD signal for controlled reset assertion and release. Use Value: 0.891-V reference accuracy (±1%) and programmable soft-start ensure stable boot and meet processor AVS timing windows. |
Use Scenario: Powering a broadband optical transceiver ASIC requiring low-noise 1.2-V supply with EMI-sensitive analog sections. IC Role / Device Role / Timing Role: High-frequency (700 kHz) buck regulator minimizing inductor size while maintaining <10-mV ripple. Use Value: Adjustable 280–700 kHz frequency range allows tuning to avoid critical RF bands in dense communication modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54373PWPR | Same PWP package, identical pinout, but rated for 3-A output - lacks 14-A capability and dual-supply architecture (VIN/PVIN). | Only suitable for low-power peripherals or auxiliary rails, not core/FPGA supplies. | Select only if output current ≤3 A and thermal budget permits higher losses per amp. |
| LM27402SDX/NOPB | Controller-only (no integrated MOSFETs), requires external 3.5-mΩ FETs; supports up to 25-A with proper layout. | Demands additional board area, gate drivers, and layout expertise - better for ultra-high-efficiency or custom thermal designs. | Choose when >14-A capability, discrete FET optimization, or multi-phase scaling is required. |
Compared with TPS54073PWPG4, TPS54373PWPR offers footprint compatibility but insufficient current capacity for core regulation, while LM27402SDX/NOPB provides scalability and efficiency headroom at the cost of design complexity and component count.
Availability
TPS54073PWPG4 is available at Aetrix Electronics and suitable for FPGA core supplies, microprocessor point-of-load regulation, and networking ASIC power delivery requiring stable component supply, long-term lifecycle assurance, and consistent thermal performance across industrial temperature ranges.
Supply support for TPS54073PWPG4 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 TPS54073PWPG4 belongs to TI's SWIFT™ family of synchronous buck converters, designed specifically for low-input-voltage, high-output-current point-of-load applications in computing, communications, and industrial systems.
FAQ
What is the maximum continuous output current supported by the TPS54073PWPG4?
The TPS54073PWPG4 supports 14 A continuous output current under recommended operating conditions (TJ ≤ 125°C, proper PCB thermal design). Its peak current limit is specified at 14.5 A, verified across input voltage and temperature ranges per the SLVS547 datasheet. Derating applies above 85°C ambient due to thermal impedance limits.
Does the TPS54073PWPG4 require external MOSFETs?
No, the TPS54073PWPG4 integrates both high-side and low-side power MOSFETs with a combined rDS(on) of 8 mΩ - eliminating the need for external switches. This integration reduces bill-of-materials count, simplifies layout, and ensures matched timing and thermal behavior between the two FETs within the same die.
How does the TPS54073PWPG4 handle output precharge during start-up?
The TPS54073PWPG4 disables sinking current during start-up, preventing reverse current flow into a precharged output. This feature allows safe use with optional precharge diodes (as shown in the typical application schematic), avoiding potential damage to upstream sources or downstream loads when powering systems with existing bus voltage.
What package type and thermal characteristics define the TPS54073PWPG4?
The TPS54073PWPG4 uses a 28-pin HTSSOP (PWP) package with PowerPAD™ - a thermally enhanced variant measuring 6.4 mm × 9.7 mm and featuring an exposed copper pad. With proper PCB layout (≥8 thermal vias, AGND-connected pad, 3″×3″ 2-oz copper), its junction-to-ambient thermal resistance is 14.87°C/W, enabling 6.72 W power dissipation at 25°C ambient.
Can the switching frequency of the TPS54073PWPG4 be synchronized to an external clock?
Yes, the TPS54073PWPG4 supports synchronization via the SYNC pin, which accepts an external clock signal from 300 kHz to 700 kHz. When SYNC ≥2.5 V, it selects the internal 550-kHz mode; when SYNC ≤0.8 V, it selects 350 kHz. For external sync, the RT pin must be configured with a resistor to AGND to maintain stable operation and avoid frequency drift.
TPS54073PWPG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SWIFT™
- Package/Case:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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):
- 0.9V
- Voltage - Output (Max):
- 3.6V
- Current - Output:
- 14A
- Frequency - Switching:
- 350kHz, 550kHz, 280kHz ~ 700kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
TPS54073PWPG4 FAQ
1.How can I place an order for TPS54073PWPG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54073PWPG4 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 TPS54073PWPG4 reliable?
The price and inventory of TPS54073PWPG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54073PWPG4 is usually 5 days.
3.What payment methods are accepted for TPS54073PWPG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54073PWPG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54073PWPG4?
TPS54073PWPG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54073PWPG4 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 TPS54073PWPG4?
For technical support, including TPS54073PWPG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54073PWPG4 requirements.
6.How does Aetrix verify that TPS54073PWPG4 is sourced from the original manufacturer or authorized distributors?
All TPS54073PWPG4 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 TPS54073PWPG4 meets industry standards.
7.What is the process for return or replacement of TPS54073PWPG4?
All TPS54073PWPG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS54073PWPG4, 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 TPS54073PWPG4 part is unused and in its original packaging.
Return procedure for TPS54073PWPG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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