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Texas Instruments TPS54625PWPR
- Part No.:
- TPS54625PWPR
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54625PWPR.pdf
- Description:
- IC REG BUCK ADJ 6.5A 14HTSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS54625PWPR from Texas Instruments is a 6.5-A synchronous step-down DC/DC converter with integrated high-side (36 mΩ) and low-side (28 mΩ) N-channel MOSFETs, operating from 4.5 V to 18 V input and delivering adjustable output voltage from 0.76 V to 5.5 V. It uses D-CAP2™ adaptive on-time control for fast transient response in digital TV, Blu-ray player, and STB power rails.
For engineers reviewing the TPS54625PWPR datasheet, TPS54625PWPR pinout, TPS54625PWPR application, or TPS54625PWPR equivalent, key selection criteria include its 650-kHz pseudo-fixed switching frequency, pre-biased soft-start capability, power-good open-drain output, cycle-by-cycle over-current protection, and thermal shutdown at 165°C - all in an HTSSOP-14 PowerPAD™ package.
Technical Context
The TPS54625PWPR implements D-CAP2™ mode control, combining adaptive on-time PWM with internal ripple simulation to achieve stable regulation without external compensation, even with ultra-low-ESR ceramic output capacitors. Its control loop directly senses output voltage via the VFB pin and adjusts on-time based on VIN and VO to maintain ~650 kHz operation across input and load variations.
This device integrates dual N-FETs, a 5.5-V linear regulator (VREG5), adjustable soft-start (SS), and output discharge circuitry. Protection features include valley-current OCP, output over/under-voltage detection (125% OVP / 65% UVP), UVLO on VREG5, and non-latching thermal shutdown - all designed for robust 6.5-A continuous operation from –40°C to 85°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 18 V - supports wide industrial and consumer DC bus inputs including 5 V, 12 V, and 15 V rails. |
| Output Current | 6.5 A continuous - rated for sustained high-current loads in compact space-constrained designs. |
| Switching Frequency | 650 kHz nominal - enables small magnetics and low-output-ripple FCCM operation at light load. |
| High-Side RDS(on) | 36 mΩ - minimizes conduction loss during high-duty-cycle operation (e.g., 3.3 V out from 12 V in). |
| Low-Side RDS(on) | 28 mΩ - reduces synchronous rectification losses and improves efficiency at mid-to-high load currents. |
| VFB Reference Accuracy | ±0.5% (757–773 mV at 25°C) - ensures tight output voltage regulation across temperature and line/load conditions. |
| Shutdown Current | <10 μA - enables ultra-low-power standby in battery-backed or always-on systems. |
Pinout & Package
TPS54625PWPR is housed in a 14-pin HTSSOP (PWP) package with exposed PowerPAD™ thermal pad soldered to PGND for enhanced thermal performance. The package measures 5.0 mm × 6.4 mm × 1.2 mm and supports JEDEC Level-2 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VO (Pin 1) | Output voltage node | Connects to output capacitor; provides internal discharge path via 100-Ω MOSFET when EN = low. |
| VFB (Pin 2) | Feedback input | Senses output voltage via resistor divider; threshold is 765 mV ±0.5% for precise regulation. |
| VREG5 (Pin 3) | 5.5-V bias rail | Powers internal circuitry; requires 1-μF ceramic cap to GND; inactive when EN = low. |
| SS (Pin 4) | Soft-start control | 6-μA current source charges external capacitor; enables adjustable ramp-up and pre-biased startup. |
| GND (Pin 5) | Signal ground reference | Reference for analog circuits; must be tightly coupled to PGND near IC for noise immunity. |
| PG (Pin 6) | Open-drain power-good | Asserts high after 1.7× soft-start time when VFB is within ±10% of target; requires 25–150 kΩ pull-up to VREG5. |
| EN (Pin 7) | Enable input | Active-high logic control; internal 200–800 kΩ pull-down; threshold is 1.6 V (high) / 0.6 V (low). |
| PGND1, PGND2 (Pins 8,9) | Power ground returns | Low-side FET source connections and current-sense inputs; must be joined to GND with low-inductance layout. |
| SW1, SW2 (Pins 10,11) | Switch nodes | Drain-source junctions of internal FETs; connect to boost capacitors (VBST–SW) and output inductor. |
| VBST (Pin 12) | Bootstrap supply | Charged via internal diode from VREG5; supplies gate drive for high-side FET; requires 0.1-μF ceramic cap to SW1/SW2. |
| VIN1, VIN2 (Pins 13,14) | Main input power | Parallel-connected inputs for reduced trace resistance; feed high-side FET drains and VREG5 LDO input. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP2™ adaptive on-time control | Enables zero-external-compensation design with fast transient response (<100 ns load-step recovery) and stability with ceramic or polymer output caps. |
| Pre-biased soft start | Prevents reverse current flow during startup into pre-charged outputs by gradually enabling low-side FET conduction cycle-by-cycle. |
| Integrated 5.5-V VREG5 LDO | Self-powered internal bias rail eliminates need for external 5-V supply; delivers up to 20 mA for external circuitry or bootstrap charging. |
| Cycle-by-cycle over-current protection | Detects valley current on low-side FET using temperature-compensated SW–PGND voltage sensing; latches off on sustained overload. |
| Output discharge function | Activates internal 100-Ω MOSFET between VO and GND when EN = low or fault occurs - avoids hold-up voltage in safety-critical systems. |
Applications
| Digital Television Power Supply | Blu-ray Disc™ Player Core Rail |
|---|---|
Use Scenario: Supplies 1.05 V @ 6.5 A to SoC and memory subsystems in 4K UHD TVs with dynamic backlight and HDMI processing. IC Role / Device Role / Timing Role: Primary buck regulator delivering clean, low-noise core voltage with fast load-step response to video frame-rate changes. Use Value: D-CAP2™ control maintains <50 mV output deviation during 0→6.5 A transients, eliminating need for large bulk capacitance. |
Use Scenario: Powers laser driver and video decode ASIC in high-definition Blu-ray players requiring stable 1.2 V/3.3 V rails under burst-mode DVD read operations. IC Role / Device Role / Timing Role: High-efficiency synchronous buck supplying regulated core voltage while supporting pre-biased startup during disc spin-up sequences. Use Value: Pre-biased soft start prevents output sinking during hot-plug events, avoiding system reset or data corruption. |
| Home Networking Terminal | Digital Set-Top Box (STB) |
Use Scenario: Delivers 1.8 V @ 4 A to multi-core broadband gateway processors handling DOCSIS 3.1 and Wi-Fi 6 traffic aggregation. IC Role / Device Role / Timing Role: Main processor core supply with FCCM light-load mode to minimize idle power and meet Energy Star standby requirements. Use Value: <10 μA shutdown current and forced CCM reduce no-load losses to <15 mW, extending power adapter lifetime. |
Use Scenario: Generates 3.3 V @ 3 A for conditional access modules and HDMI interface circuitry in pay-TV STBs with instant-on functionality. IC Role / Device Role / Timing Role: Secondary buck converter providing isolated, well-regulated I/O rail with power-good sequencing for secure boot verification. Use Value: Open-drain PG output enables reliable power sequencing with FPGA or microcontroller, meeting STB firmware timing windows (±10% VO tolerance). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54620RGYR | Same 6.5-A rating and D-CAP2™ control, but uses 16-pin QFN (RGY) with separate BOOT and PHASE pins; higher RDS(on) (42/32 mΩ); no VREG5 output. | Lacks integrated 5.5-V bias rail - requires external LDO for gate drive; better thermal performance in QFN but needs more board area. | Select when layout allows QFN thermal vias and external bias is acceptable; avoid if VREG5 simplification is critical. |
| MP2315GJ-Z | 6-A rating, 4.5–18 V input, but uses constant-on-time (COT) control; higher RDS(on) (50/35 mΩ); no pre-biased soft start or output discharge. | No built-in output discharge or PG signal - requires external circuitry for safe shutdown; less accurate VREF (±1.5%). | Choose for cost-sensitive designs where full feature set isn't required; verify transient response meets system specs without D-CAP2™ optimization. |
Compared with TPS54625PWPR, TPS54620RGYR offers superior thermal dissipation in QFN but sacrifices VREG5 integration, while MP2315GJ-Z reduces BOM count with smaller footprint yet lacks critical reliability features like pre-biased startup and output discharge - making TPS54625PWPR optimal for high-integrity consumer power rails.
Availability
TPS54625PWPR is available at Aetrix Electronics and suitable for digital TV power supply, Blu-ray player core rail, and STB I/O rail applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS54625PWPR 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 TPS54625PWPR belongs to TI's D-CAP2™ synchronous buck converter family, engineered specifically for high-current, low-voltage point-of-load regulation in consumer electronics where fast transient response, small solution size, and reliability under varying load conditions are essential.
FAQ
What is the maximum continuous output current supported by the TPS54625PWPR?
The TPS54625PWPR is rated for 6.5 A continuous output current under recommended operating conditions (TA = –40°C to 85°C, proper PCB thermal design with PowerPAD™ soldered to PGND). This rating assumes adequate copper area, thermal vias, and airflow; derating applies above 85°C ambient or with insufficient heatsinking.
Does the TPS54625PWPR support pre-biased output startup?
Yes, the TPS54625PWPR includes proprietary pre-biased soft-start circuitry that prevents reverse current flow during startup into a pre-charged output. It achieves this by incrementally increasing low-side FET on-time cycle-by-cycle until reaching normal duty-cycle operation - a key requirement for hot-swap and modular power systems.
What is the purpose of the VREG5 pin on the TPS54625PWPR?
The VREG5 pin on the TPS54625PWPR provides a regulated 5.5-V output (5.2–5.7 V typical) to power internal circuitry and optionally external components. It sources up to 20 mA, requires a 1-μF ceramic capacitor to GND, and shuts down when EN = low - eliminating need for an external bias supply in most designs.
How does the TPS54625PWPR implement over-current protection?
The TPS54625PWPR uses cycle-by-cycle valley-current limiting, monitoring low-side FET voltage (SW–PGND) during its on-time. When sensed voltage exceeds the threshold corresponding to ~7.2–9.5 A (depending on temp), the controller extends low-side conduction and eventually latches off both FETs if overload persists - protecting against short-circuit and overload faults.
Can the TPS54625PWPR operate with ceramic output capacitors only?
Yes, the TPS54625PWPR is explicitly designed for use with ultra-low-ESR ceramic output capacitors (22–68 μF typical), enabled by its D-CAP2™ control architecture and internal ripple-simulation circuitry. Unlike traditional voltage-mode controllers, it remains stable without ESR-based compensation, reducing component count and board area.
TPS54625PWPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- D-CAP2™
- Package/Case:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.765V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 6.5A
- Frequency - Switching:
- 650kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-HTSSOP
TPS54625PWPR FAQ
1.How can I place an order for TPS54625PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54625PWPR 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 TPS54625PWPR reliable?
The price and inventory of TPS54625PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54625PWPR is usually 5 days.
3.What payment methods are accepted for TPS54625PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54625PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54625PWPR?
TPS54625PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54625PWPR 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 TPS54625PWPR?
For technical support, including TPS54625PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54625PWPR requirements.
6.How does Aetrix verify that TPS54625PWPR is sourced from the original manufacturer or authorized distributors?
All TPS54625PWPR 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 TPS54625PWPR meets industry standards.
7.What is the process for return or replacement of TPS54625PWPR?
All TPS54625PWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS54625PWPR, 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 TPS54625PWPR part is unused and in its original packaging.
Return procedure for TPS54625PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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