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Texas Instruments TPS54616PWPRG4
- Part No.:
- TPS54616PWPRG4
- Manufacturer:
- Texas Instruments
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54616PWPRG4.pdf
- Description:
- IC REG BUCK 3.3V 6A 28HTSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS54616PWPRG4 from Texas Instruments is a 3-V to 6-V input, 3.3-V fixed-output synchronous buck PWM converter with integrated 30-mΩ high- and low-side MOSFETs, delivering up to 6-A continuous output current. It features internal compensation, 1.0% initial output voltage accuracy at 25°C, powergood monitoring, and thermal shutdown-designed for point-of-load regulation in FPGAs, ASICs, and microprocessors.
For engineers reviewing the TPS54616PWPRG4 datasheet, TPS54616PWPRG4 pinout, TPS54616PWPRG4 application, or TPS54616PWPRG4 equivalent, key selection considerations include its 3.3-V fixed output, 28-pin HTSSOP PowerPAD™ package, adjustable switching frequency (280–700 kHz), under-voltage lockout (2.95 V start), and integrated current limiting with 200 ns response time.
Technical Context
The TPS54616PWPRG4 implements a voltage-mode synchronous buck topology with an internally compensated error amplifier (3 MHz unity-gain bandwidth) and adaptive dead-time control to prevent shoot-through. Its PWM comparator uses a feed-forward ramp with 1-V peak-to-peak amplitude and 70–85 ns propagation delay.
It integrates dual 30-mΩ MOSFETs rated for 12-A peak current, supports both fixed-frequency (350/550 kHz) and resistor-programmable operation (RT pin), and employs a dedicated VBIAS regulator (2.7–2.9 V output) to supply internal circuitry independently of VIN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 6.0 V - supports direct regulation from 3.3-V or 5-V intermediate bus rails without pre-regulation. |
| Output Voltage | 3.3 V fixed with ±3.0% tolerance over full load (0–6 A), temperature (−40°C to 125°C), and input range (4–6 V). |
| Continuous Output Current | 6 A - sustained delivery enabled by thermally enhanced 28-pin HTSSOP PowerPAD™ package and dual 30-mΩ MOSFETs. |
| Switching Frequency | Programmable 280–700 kHz via RT resistor or fixed 350/550 kHz via FSEL pin - balances efficiency, size, and EMI performance. |
| Current Limit Threshold | 10–12 A (at VIN = 6 V) - cycle-by-cycle protection with 100 ns leading-edge blanking and 200 ns total response time. |
| Powergood Accuracy | 90% of VREF (±3% hysteresis) on VSENSE - enables reliable processor reset and supply sequencing with 35 µs noise immunity. |
| Thermal Shutdown | 150°C trip point with 10°C hysteresis - protects against sustained overload or poor PCB thermal design. |
| Quiescent Current | 6.2–12.8 mA (depending on frequency mode) - minimizes no-load power loss in always-on subsystems. |
Pinout & Package
TPS54616PWPRG4 is housed in a thermally enhanced 28-pin HTSSOP (PWP) PowerPAD™ package with exposed thermal pad soldered to AGND plane for optimal junction-to-board heat transfer (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 connected to PowerPAD™ thermal pad and isolated from PGND to minimize noise coupling. |
| VSENSE (Pin 2) | Error amplifier inverting input | Direct connection to output voltage feedback node - determines regulation accuracy; requires Kelvin sensing for best load regulation. |
| PWRGD (Pin 4) | Open-drain powergood indicator | Pulled low if VSENSE < 90% VREF, VIN < UVLO, SS/ENA low, or thermal shutdown - used for system reset and fault signaling. |
| BOOT (Pin 5) | Bootstrap supply for high-side driver | Connects 0.022–0.1 µF ceramic capacitor to PH - enables floating gate drive for integrated high-side MOSFET. |
| PH (Pins 6–14) | Phase node | Junction of internal high- and low-side MOSFETs - connects to output inductor; multiple pins reduce parasitic inductance and improve current sharing. |
| PGND (Pins 15–19) | Power ground return | High-current return path for low-side MOSFET and output capacitor - must be tied to large copper pour and input/output capacitor negatives. |
| RT (Pin 28) | Frequency setting resistor input | Connect resistor to AGND to set switching frequency from 280–700 kHz - enables optimization for efficiency (lower f) or size (higher f). |
| SS/ENA (Pin 26) | Slow-start/enable control | Logic-enable threshold at 1.2 V; external capacitor extends soft-start time - prevents inrush current and enables sequencing with other rails. |
| VBIAS (Pin 25) | Internal bias regulator output | Supplies 2.7–2.9 V to internal analog/digital blocks - requires 0.1–1 µF X7R/X5R ceramic bypass to AGND, placed adjacent to pin. |
| VIN (Pins 20–24) | Main input supply | 3–6 V input for power switches and VBIAS LDO - each pin must be individually bypassed to PGND with 1–10 µF low-ESR ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30-mΩ MOSFETs | Enables compact, high-efficiency 6-A solution without external power stage components or heatsinks. |
| Internally compensated control loop | Eliminates need for external compensation network - reduces BOM count and design iteration time. |
| Adjustable switching frequency (280–700 kHz) | Allows trade-off between inductor size (higher f) and conduction losses (lower f) for application-specific optimization. |
| Fast transient response (10–20 µs recovery) | Stabilizes output during sudden load steps typical in FPGA core voltage domains without excessive output capacitance. |
| Powergood with 35 µs deglitch | Provides robust system-level reset signaling immune to high-frequency noise on VSENSE trace. |
| Thermal shutdown with 10°C hysteresis | Prevents permanent damage during sustained overload while enabling automatic recovery once temperature falls. |
Applications
| FPGA Core Supply | ASIC Point-of-Load Regulation |
|---|---|
|
Use Scenario: Powers 3.3-V I/O banks or auxiliary logic in Xilinx or Intel FPGAs during configuration and active operation. IC Role / Device Role / Timing Role: Primary DC/DC regulator delivering stable 3.3-V rail with fast transient response to handle dynamic I/O switching currents. Use Value: Maintains <±3% output regulation across 0–6 A load steps and −40°C to 125°C ambient, ensuring signal integrity and timing margin compliance. |
Use Scenario: Supplies configurable logic blocks or memory interfaces in custom ASICs deployed in telecom infrastructure equipment. IC Role / Device Role / Timing Role: Synchronous buck converter providing tightly regulated 3.3-V supply with powergood sequencing for multi-rail ASIC startup. Use Value: Integrated PWRGD output coordinates with FPGA or processor reset controllers to guarantee safe power-up order and avoid latch-up. |
| Industrial PLC I/O Module | Networking Switch PHY Interface |
|
Use Scenario: Powers digital isolators, level shifters, and interface ICs in programmable logic controller backplane modules operating in harsh environments. IC Role / Device Role / Timing Role: Robust 3.3-V power source with UVLO (2.95 V start), thermal shutdown (150°C), and wide input range (3–6 V) for unregulated 5-V bus operation. Use Value: Delivers continuous 6-A output with RθJA = 18.2°C/W thermal performance, sustaining operation at 85°C ambient without derating. |
Use Scenario: Supplies 3.3-V bias to Ethernet PHY transceivers (e.g., DP83867, RTL8211) in managed Gigabit switches with strict EMI requirements. IC Role / Device Role / Timing Role: Adjustable-frequency buck regulator (280–700 kHz) enabling EMI spread-spectrum tuning and optimized filter component selection. Use Value: Programmable RT resistor allows precise frequency placement away from sensitive 125-MHz Ethernet harmonics, reducing conducted emissions. |
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 3–6 V input, 3.3 V fixed output, but rated for 8-A continuous current and uses 16-pin WQFN with wettable flanks. | Higher current capability and smaller footprint; requires re-layout due to different pinout and thermal pad geometry. | Select when >6 A headroom or space-constrained layouts are required; verify thermal performance with new PCB stackup. |
| MP2315DJ-LF-Z | 3–17 V input, 3.3 V fixed output, 6-A rating, but lacks Powergood, adjustable frequency, and VBIAS regulator. | Broader input range suits 12-V intermediate bus designs; missing PWRGD limits use in sequenced multi-rail systems. | Choose for cost-sensitive, single-rail industrial applications where sequencing and fault reporting are not required. |
Compared with TPS54616PWPRG4, TPS54620RGYT offers higher current and modern packaging but demands layout changes, while MP2315DJ-LF-Z trades feature completeness for wider input range and lower cost-neither is pin-compatible, and both require validation of loop stability and thermal performance in the target application.
Availability
TPS54616PWPRG4 is available at Aetrix Electronics and suitable for FPGA power delivery, ASIC point-of-load regulation, and industrial PLC I/O modules requiring stable component supply and long-term production continuity.
Supply support for TPS54616PWPRG4 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 over 50 years of innovation in high-reliability power conversion solutions.
The TPS5461x family was designed specifically for low-input-voltage, high-current point-of-load applications in computing, communications, and industrial systems-emphasizing integration, thermal efficiency, and ease of use.
FAQ
What is the recommended input capacitor configuration for TPS54616PWPRG4?
TPS54616PWPRG4 requires individual 1–10 µF low-ESR ceramic capacitors connected from each VIN pin (20–24) directly to adjacent PGND pins. Use X7R or X5R dielectrics with 10-V rating; place capacitors as close as possible to the package to minimize high-frequency loop inductance and ensure stable operation under 6-A load transients.
Does TPS54616PWPRG4 support external synchronization to a system clock?
No, TPS54616PWPRG4 does not support external clock synchronization. It operates in free-running mode only-either at internally fixed frequencies (350 kHz or 550 kHz selected via FSEL) or resistor-programmed frequencies (280–700 kHz via RT). The FSEL and RT pins are input-only; there is no SYNC input terminal on the device.
How is the slow-start time determined for TPS54616PWPRG4?
TPS54616PWPRG4 has a nominal internal slow-start time of 6.1 ms (per Table 1 in SLVS400D). An external capacitor on SS/ENA extends this time linearly: CSS = (tSS × 5 µA)/1.2 V. For example, a 10 nF capacitor yields ~42 ms total start-up. The internal ramp begins only after SS/ENA exceeds 1.2 V, so capacitor charging delay adds before regulation starts.
Can TPS54616PWPRG4 be used with an input voltage below 3 V?
No. TPS54616PWPRG4 incorporates an undervoltage lockout (UVLO) that prevents operation until VIN reaches 2.95 V (typical). Below this threshold, the device remains disabled-no switching occurs, and PWRGD stays low. Operation outside the 3.0–6.0 V recommended range may cause malfunction or damage per absolute maximum ratings.
What is the purpose of the VBIAS pin on TPS54616PWPRG4?
The VBIAS pin on TPS54616PWPRG4 outputs a regulated 2.7–2.9 V supply derived from VIN, powering internal analog and digital circuitry including the error amplifier and PWM comparator. It must be bypassed with a 0.1–1 µF X7R/X5R ceramic capacitor to AGND, placed adjacent to the pin. External loads are permitted but must not pull VBIAS below 2.7 V or inject switching noise.
TPS54616PWPRG4 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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3.3V
- 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
TPS54616PWPRG4 FAQ
1.How can I place an order for TPS54616PWPRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54616PWPRG4 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 TPS54616PWPRG4 reliable?
The price and inventory of TPS54616PWPRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54616PWPRG4 is usually 5 days.
3.What payment methods are accepted for TPS54616PWPRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54616PWPRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54616PWPRG4?
TPS54616PWPRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54616PWPRG4 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 TPS54616PWPRG4?
For technical support, including TPS54616PWPRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54616PWPRG4 requirements.
6.How does Aetrix verify that TPS54616PWPRG4 is sourced from the original manufacturer or authorized distributors?
All TPS54616PWPRG4 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 TPS54616PWPRG4 meets industry standards.
7.What is the process for return or replacement of TPS54616PWPRG4?
All TPS54616PWPRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS54616PWPRG4, 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 TPS54616PWPRG4 part is unused and in its original packaging.
Return procedure for TPS54616PWPRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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