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Texas Instruments TPS54610PWPG4
- Part No.:
- TPS54610PWPG4
- Manufacturer:
- Texas Instruments
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54610PWPG4.pdf
- Description:
- IC REG BUCK ADJ 6A 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,818
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Product details
Overview
TPS54610PWPG4 from Texas Instruments is a 3-V to 6-V input, 6-A synchronous buck PWM converter with integrated 30-mΩ high- and low-side MOSFETs, adjustable output down to 0.9 V (±1.0% accuracy), and selectable switching frequency (350/550 kHz fixed or 280–700 kHz adjustable). It delivers point-of-load regulation for FPGAs and microprocessors in space-constrained industrial and telecom power systems.
For engineers reviewing the TPS54610PWPG4 datasheet, TPS54610PWPG4 pinout, TPS54610PWPG4 application, or TPS54610PWPG4 equivalent, key selection considerations include its thermally enhanced HTSSOP-28 PowerPAD™ package, internal slow-start (3.35 ms), power-good open-drain output, undervoltage lockout (2.95 V start), and cycle-by-cycle overcurrent protection with 200 ns response.
Technical Context
The TPS54610PWPG4 implements a voltage-mode synchronous buck architecture with a high-performance error amplifier (110 dB open-loop gain, 5 MHz unity-gain bandwidth) enabling flexible LC filter design. Its adaptive dead-time control prevents shoot-through by sequencing high- and low-side MOSFET gate drivers based on real-time gate voltage thresholds (turn-on delayed until opposite gate falls below 2 V).
Control logic integrates peak-current limiting (7.2–12 A trip range depending on VIN), thermal shutdown (150°C trip, 10°C hysteresis), and programmable soft-start via external capacitor on SS/ENA. The device supports synchronization to external clocks up to 700 kHz using the SYNC pin with RT resistor biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 6 V - Supports single-cell Li-ion, 3.3-V/5-V intermediate bus rails without pre-regulation. |
| Continuous Output Current | 6 A - Delivers full rated current with thermal management via exposed PowerPAD™ and PCB copper area. |
| Output Voltage Accuracy | ±1.0% at 0.9 V - Ensures tight regulation for core voltages of modern FPGAs and DSPs. |
| Switching Frequency | 350/550 kHz fixed or 280–700 kHz adjustable - Enables EMI optimization and inductor size trade-offs. |
| MOSFET rDS(on) | 26–47 mΩ (high-side, VI = 6 V) - Minimizes conduction loss at 6-A load, critical for >90% efficiency at 3.3-V output. |
| Power-Good Threshold | VSENSE ≥ 90% Vref (0.802 V) - Provides reliable system reset signaling with 3% hysteresis and 35-μs deglitch. |
| UVLO Threshold | 2.95 V start / 2.80 V stop - Prevents erratic startup during brownout conditions on 3.3-V input rails. |
| Thermal Shutdown | 150°C trip with 10°C hysteresis - Protects against sustained overload without requiring external thermal sensors. |
Pinout & Package
The TPS54610PWPG4 is housed in a thermally enhanced 28-pin HTSSOP (PWP) package measuring 9.70 mm × 6.40 mm with an exposed thermal pad (PowerPAD™) that must be soldered to AGND for optimal thermal performance (RθJA = 31.0°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND (Pin 1) | Analog ground reference | Return path for compensation network, VBIAS capacitor, RT resistor, and SYNC; must connect PowerPAD™ to AGND. |
| BOOT (Pin 5) | Bootstrap supply | Drives high-side MOSFET gate via 0.022–0.1-μF ceramic capacitor to PH; enables floating gate drive. |
| COMP (Pin 3) | Error amplifier output | Connects external Type II/III compensation network to VSENSE; sets loop stability and transient response. |
| PGND (Pins 15–19) | Power ground return | High-current return for low-side FET and input/output capacitors; requires large copper pour and single-point AGND tie. |
| PH (Pins 6–14) | Phase node | Junction of internal high-/low-side FETs and output inductor; carries high di/dt switching current. |
| PWRGD (Pin 4) | Open-drain status signal | Asserts high when VSENSE ≥ 90% Vref, VIN ≥ UVLO, and SS/ENA enabled - used for processor reset or supply sequencing. |
| RT (Pin 28) | Frequency programming | Resistor to AGND sets free-running frequency (280–700 kHz); required for SYNC mode operation. |
| SS/ENA (Pin 26) | Enable/slow-start control | Logic-high (>1.2 V) enables operation; external capacitor extends soft-start time beyond internal 3.35 ms. |
| VBIAS (Pin 25) | Bias regulator output | Supplies internal circuitry; bypass with 0.1–1.0-μF X7R/X5R ceramic capacitor to AGND near pin. |
| VIN (Pins 20–24) | Main input supply | Feeds power MOSFETs and internal LDO; requires local 10-μF low-ESR ceramic bypass to PGND. |
| VSENSE (Pin 2) | Feedback input | Inverting input of error amplifier; connects to output divider to set regulated voltage (min 0.9 V). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30-mΩ MOSFETs | Eliminates external power switches and reduces board area by >30% versus discrete solutions. |
| Adjustable 0.9-V output | Supports next-generation low-voltage cores (e.g., 0.9-V FPGA I/O, 1.0-V CPU cores) with ±1% tolerance. |
| Synchronizable 280–700 kHz | Enables noise-sensitive applications (e.g., RF transceivers) to avoid interference bands via external clock alignment. |
| PowerPAD™ thermal package | Reduces junction-to-board thermal resistance to 15.1°C/W, allowing 6-A operation without heatsink on 4-layer PCB. |
| Internal slow-start (3.35 ms) | Prevents inrush current damage to input capacitors and downstream loads during cold startup. |
| Peak current limit + thermal shutdown | Provides dual-layer protection: fast 200-ns current limiting for short-circuits and thermal cutoff for sustained overloads. |
Applications
| Baseband Processor Power | FPGA Core Supply |
|---|---|
Use Scenario: Powering multi-core baseband processors in 4G/LTE small cells where thermal density and transient response are critical. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 1.2 V @ 5 A with <100-μs load-step response. Use Value: Integrated MOSFETs and high-bandwidth error amplifier enable stable regulation under 3-A/μs load transients without external compensation tuning. | Use Scenario: Generating configurable core voltage (0.9–1.2 V) for Xilinx Artix-7 FPGAs in industrial PLCs with strict EMI limits. IC Role / Device Role / Timing Role: Adjustable-output buck converter synchronized to system clock to suppress switching noise in analog sensor interfaces. Use Value: 280–700 kHz programmability allows placement of fundamental frequency outside sensitive 1–10 MHz ADC sampling bands. |
| Optical Transceiver Bias | Notebook System Rail |
Use Scenario: Providing clean, low-noise 3.3-V bias for SFP+ optical modules in data center switches. IC Role / Device Role / Timing Role: Secondary buck regulator with PWRGD signaling to enable laser driver only after stable 3.3-V rail is established. Use Value: Open-drain PWRGD with 3% hysteresis ensures reliable handshaking with optical module firmware during hot-plug events. | Use Scenario: Generating 5-V auxiliary rail for USB-C PD controllers and display interface ICs in ultra-thin notebooks. IC Role / Device Role / Timing Role: Compact 28-pin HTSSOP buck converter replacing larger SOIC-8 solutions to save PCB area. Use Value: PowerPAD™ package achieves 6-A capability in footprint smaller than legacy 8-pin packages, enabling thinner end-product designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54612PWPR | Fixed 1.2-V output (non-adjustable), same 6-A rating and HTSSOP-28 package. | Eliminates feedback resistors but lacks flexibility for dynamic voltage scaling. | Select when system requires only 1.2-V core rail and board space for feedback network is constrained. |
| LM2678SDX-ADJ/NOPB | 5-A rating, 8-V to 40-V input range, SO-8 package; no integrated PowerPAD™ or SYNC capability. | Targets higher-input industrial systems; lacks thermal performance and frequency synchronization of TPS54610PWPG4. | Choose only if input exceeds 6 V or cost sensitivity outweighs thermal/EMI advantages of TI's solution. |
Compared with TPS54610PWPG4, the TPS54612PWPR offers simplified layout for fixed 1.2-V use cases but sacrifices output adjustability, while the LM2678SDX-ADJ/NOPB provides wider input range at the cost of lower current capability, inferior thermal metrics, and no synchronization support - making TPS54610PWPG4 optimal for compact, high-efficiency 3–6-V point-of-load designs.
Availability
TPS54610PWPG4 is available at Aetrix Electronics and suitable for telecommunications infrastructure, FPGA power delivery, and optical networking equipment requiring stable component supply across extended product lifecycles.
Supply support for TPS54610PWPG4 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 TPS546xx family was engineered specifically for high-density, high-current point-of-load applications in networking, computing, and telecom systems - emphasizing thermal efficiency, integration, and robust protection features.
FAQ
What is the maximum recommended PCB copper area for the PowerPAD™ thermal pad of the TPS54610PWPG4?
The TPS54610PWPG4 PowerPAD™ must be soldered to a minimum 250 mm² (e.g., 12.5 mm × 20 mm) AGND copper pour with ≥6 thermal vias (0.3-mm diameter, 0.8-mm pitch) connecting to inner-layer ground planes. This configuration achieves the specified RθJB of 15.1°C/W per TI's JEDEC High-K test board.
Can the TPS54610PWPG4 operate with an input voltage below 3 V?
No, the TPS54610PWPG4 incorporates an undervoltage lockout (UVLO) that disables operation until VIN reaches 2.95 V. Below this threshold, the device remains in shutdown with all outputs inactive - preventing unstable regulation or latch-up during brownout conditions.
How does the SS/ENA pin function when used for both enable control and external slow-start timing?
When a capacitor is placed between SS/ENA and AGND, the TPS54610PWPG4 adds two sequential delays: first, a hold-off period until the capacitor charges to 1.2 V (enabling startup), then a controlled ramp of the internal reference voltage proportional to capacitor value. The total startup time exceeds the internal 3.35 ms baseline, preventing inrush into large output capacitance.
What is the purpose of the BOOT capacitor in the TPS54610PWPG4 circuit?
The BOOT capacitor (0.022–0.1 μF ceramic) forms a charge pump with the internal high-side driver to generate a gate drive voltage above VIN for the upper N-channel MOSFET. Without proper BOOT capacitance, the high-side FET cannot turn on fully, causing excessive conduction loss and potential thermal failure of the TPS54610PWPG4.
Does the TPS54610PWPG4 support negative output voltages or inverting buck-boost topologies?
No, the TPS54610PWPG4 is designed exclusively for positive buck (step-down) conversion. Its internal architecture - including PH node connection, bootstrap gate drive, and error amplifier polarity - is optimized for regulating a positive output voltage referenced to PGND/AGND. Inverting configurations require external topology changes not supported by this IC.
TPS54610PWPG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SWIFT™
- Package/Case:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.891V
- Voltage - Output (Max):
- 5.4V
- Current - Output:
- 6A
- 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
TPS54610PWPG4 FAQ
1.How can I place an order for TPS54610PWPG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54610PWPG4 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 TPS54610PWPG4 reliable?
The price and inventory of TPS54610PWPG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54610PWPG4 is usually 5 days.
3.What payment methods are accepted for TPS54610PWPG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54610PWPG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54610PWPG4?
TPS54610PWPG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54610PWPG4 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 TPS54610PWPG4?
For technical support, including TPS54610PWPG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54610PWPG4 requirements.
6.How does Aetrix verify that TPS54610PWPG4 is sourced from the original manufacturer or authorized distributors?
All TPS54610PWPG4 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 TPS54610PWPG4 meets industry standards.
7.What is the process for return or replacement of TPS54610PWPG4?
All TPS54610PWPG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS54610PWPG4, 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 TPS54610PWPG4 part is unused and in its original packaging.
Return procedure for TPS54610PWPG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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