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Texas Instruments TPS54561DPRR
- Part No.:
- TPS54561DPRR
- Manufacturer:
- Texas Instruments
- Package:
- 10-WDFN Exposed Pad
- Datasheet:
-
TPS54561DPRR.pdf
- Description:
- IC REG BUCK ADJ 5A 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,641
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Product details
Overview
TPS54561DPRR from Texas Instruments is a 4.5-V to 60-V input, 5-A synchronous step-down DC-DC converter with integrated 87-mΩ high-side MOSFET, Eco-mode™ for light-load efficiency, adjustable 100-kHz to 2.5-MHz switching frequency, and 0.8-V ±1% internal reference-used in industrial power rails and automotive load-dump-tolerant supplies.
For engineers reviewing the TPS54561DPRR datasheet, TPS54561DPRR pinout, TPS54561DPRR application, or TPS54561DPRR equivalent, key selection factors include its 65-V transient survival (ISO 7637), 152-μA no-load quiescent current, soft-start/sequencing capability via SS/TR pin, and synchronization support through RT/CLK pin.
Technical Context
The TPS54561DPRR implements constant-frequency current-mode control with slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its integrated BOOT recharge FET enables near-100% duty-cycle operation, supporting output voltages close to minimum input voltage.
It features cycle-by-cycle current limiting, frequency foldback during overload, thermal shutdown at 176°C with 12°C hysteresis, and an open-drain PWRGD signal asserting low when FB falls outside 93–106% of nominal output-enabling system-level fault monitoring and sequencing coordination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 60 V - supports 12-V, 24-V, and 48-V industrial/automotive bus systems with 65-V ISO 7637 load dump tolerance |
| Output Current | 5 A continuous - delivers regulated power to FPGA I/O banks, motor drivers, or multi-rail embedded controllers |
| Switching Frequency | 100 kHz to 2.5 MHz - adjustable via RT resistor or external clock sync; enables optimization of inductor size vs. efficiency |
| Quiescent Current | 152 μA - enables always-on subsystems (e.g., CAN wake-up circuits) without excessive battery drain |
| Reference Voltage | 0.8 V ±1% - sets precise output regulation; allows 3.3-V, 5-V, or custom rail generation with standard resistor dividers |
| High-Side RDS(on) | 87 mΩ - reduces conduction loss at full load; contributes to >90% efficiency at 5-A output with proper layout |
| Operating Junction Temp | –40°C to 150°C - qualified for under-hood automotive and industrial environments with minimal derating |
Pinout & Package
TPS54561DPRR is housed in a thermally enhanced 10-pin WSON package (4.0 mm × 4.0 mm) with exposed thermal pad tied to GND for PCB-level heat dissipation. The package supports ≤35.1°C/W junction-to-ambient thermal resistance on standard 2-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap supply node | Connects external capacitor between BOOT and SW to bias high-side MOSFET gate; monitored by UVLO for safe turn-off |
| VIN | Main input supply | Accepts 4.5–60 V; withstands 65-V transients per ISO 7637; powers internal LDOs and gate driver |
| EN | Enable & UVLO control | Pull below 1.2 V to disable; internal pull-up enables floating operation; external resistor divider adjusts UVLO threshold/hysteresis |
| SS/TR | Soft-start & tracking input | Capacitor sets output ramp time; resistor divider enables power sequencing with other rails or microcontrollers |
| RT/CLK | Frequency programming/sync | Resistor to GND sets fSW; pulled above 1.55 V to accept external clock edges for system-wide timing alignment |
| FB | Feedback sensing | Inverting input of error amplifier; compares output voltage (via resistor divider) against 0.8-V reference for regulation |
| COMP | Error amplifier output | Drives PWM comparator; connects external compensation network (capacitor + resistor + zero) for loop stability |
| GND | Power & signal ground | Common return for VIN, SW, and thermal pad; must be low-impedance copper pour connected to exposed pad |
| SW | Switching node | Source of internal high-side MOSFET; connects to external inductor and bootstrap capacitor; high dv/dt node requiring careful routing |
| PWRGD | Power-good indicator | Open-drain output asserts low if FB drops below 93% or rises above 106% of target; used for processor reset or enable sequencing |
Key Features
| Feature | Design Value |
|---|---|
| Eco-mode™ pulse skipping | Reduces no-load IQ to 152 μA by disabling switching while maintaining regulation-critical for battery-backed systems |
| Integrated BOOT recharge FET | Eliminates external diode; enables high-duty-cycle operation (e.g., 5-V out from 5.5-V min input) without boot capacitor depletion |
| Adjustable UVLO with hysteresis | EN pin supports programmable start-up voltage (e.g., 9 V) and dropout recovery (e.g., 8.5 V) to prevent brownout oscillation |
| UV/OV power-good output | PWRGD provides fail-safe monitoring of output regulation window (93–106%), enabling reliable system initialization and fault response |
| Current-mode control with slope comp | Ensures stable operation across wide duty cycles and input ranges; simplifies compensation design with single-pole dominant pole |
Applications
| Industrial Motor Control | Automotive GPS/Infotainment |
|---|---|
Use Scenario: Powering servo drive logic, encoder interfaces, and isolated gate drivers in PLC-controlled motion systems. IC Role / Device Role / Timing Role: Primary 5-V/3.3-V buck regulator supplying FPGA configuration, MCU core, and communication PHYs. Use Value: Survives 65-V load dump transients per ISO 7637; maintains regulation during motor stall-induced bus sag. | Use Scenario: Supplying USB charging ports and infotainment head units in 12-V vehicle architectures. IC Role / Device Role / Timing Role: High-efficiency intermediate converter stepping 12-V battery to 5-V USB PD or 3.3-V SoC rails. Use Value: Eco-mode™ extends battery runtime during parked operation; PWRGD coordinates safe shutdown with vehicle ECU. |
| USB Dedicated Charging Port | 48-V Telecom Power System |
Use Scenario: Implementing BC1.2-compliant USB charging ports in kiosks, point-of-sale terminals, and industrial tablets. IC Role / Device Role / Timing Role: Regulating 5-V output from variable 9–36-V input (e.g., PoE+ or wide-range adapter). Use Value: Adjustable soft-start prevents inrush into large output capacitors; RT/CLK sync aligns switching with system clocks to reduce EMI. | Use Scenario: Generating 12-V or 5-V auxiliary rails from 48-V telecom distribution bus in base station equipment. IC Role / Device Role / Timing Role: Point-of-load converter delivering up to 5 A to RF front-end modules and digital signal processors. Use Value: 150°C max junction temperature rating ensures reliability in sealed, fanless enclosures; WSON package minimizes board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QPWPRQ1 | 4.5–65-V input, 3.5-A, 1.5-MHz max fSW, 100-μA IQ, no integrated BOOT FET | Lacks BOOT recharge FET; requires external diode; lower current rating limits use in 5-A designs | Select when lower cost and AEC-Q100 qualification are prioritized over 5-A capability and ultra-low IQ |
| MPQ4361GLED-A | 4.5–60-V input, 5-A, 100-kHz–2-MHz fSW, 120-μA IQ, no PWRGD or SS/TR pins | Missing power-good and soft-start/track functionality; less flexible for sequencing-critical systems | Choose for space-constrained, cost-sensitive designs where sequencing and fault signaling are handled externally |
Compared with LM5164QPWPRQ1 and MPQ4361GLED-A, the TPS54561DPRR uniquely combines 5-A capability, integrated BOOT recharge, PWRGD, and SS/TR pins-making it optimal for automotive and industrial systems requiring robust sequencing, fault reporting, and high-current density.
Availability
TPS54561DPRR is available at Aetrix Electronics and suitable for industrial motor control, automotive infotainment, USB charging ports, and 48-V telecom power systems requiring stable component supply and long-term production continuity.
Supply support for TPS54561DPRR 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 ICs, with decades of expertise in high-reliability power conversion solutions.
The TPS54561DPRR belongs to TI's high-voltage buck converter product line, designed specifically for ruggedized industrial and automotive applications demanding wide input range, transient immunity, and integrated protection features.
FAQ
What is the maximum input voltage transient the TPS54561DPRR can survive?
The TPS54561DPRR survives load dump pulses up to 65 V per ISO 7637. Its absolute maximum VIN rating is 65 V, and SW–GND transient rating is also 67 V for both 5-ns and 10-ns events. This makes TPS54561DPRR suitable for automotive 12-V and 24-V systems where alternator load dump is a critical stress condition.
How does the TPS54561DPRR achieve high efficiency at light loads?
The TPS54561DPRR uses Eco-mode™ pulse skipping to reduce switching and gate drive losses at light loads. When output voltage remains within regulation and peak switch current falls below the 600-mV COMP threshold, the device disables switching and clamps COMP at 600 mV. TPS54561DPRR resumes switching only when regulation error demands it-achieving 152-μA no-load IQ.
Can the TPS54561DPRR be synchronized to an external clock?
Yes, the TPS54561DPRR supports external clock synchronization via the RT/CLK pin. When pulled above 1.55 V, the internal amplifier disables and the pin becomes a high-impedance clock input to the PLL. TPS54561DPRR locks to falling edges of the external clock and maintains synchronization even during Eco-mode operation.
What is the purpose of the SS/TR pin on the TPS54561DPRR?
The SS/TR pin on the TPS54561DPRR controls soft-start timing and enables output voltage tracking or sequencing. A capacitor to ground sets the output voltage ramp rate; a resistor divider allows one rail to follow another during power-up. TPS54561DPRR discharges this pin before restart after faults, ensuring repeatable startup behavior.
Does the TPS54561DPRR require an external bootstrap diode?
No, the TPS54561DPRR integrates a BOOT recharge FET, eliminating the need for an external bootstrap diode. This feature enables high-duty-cycle operation (e.g., 5-V output from 5.5-V input) and simplifies layout. The internal circuit refreshes the BOOT–SW capacitor during each off-time, maintaining gate drive integrity without external components.
TPS54561DPRR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Eco-Mode™
- Package/Case:
- 10-WDFN Exposed Pad
- 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):
- 60V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 59V
- Current - Output:
- 5A
- Frequency - Switching:
- 100kHz ~ 2.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-WSON (4x4)
TPS54561DPRR FAQ
1.How can I place an order for TPS54561DPRR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54561DPRR 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 TPS54561DPRR reliable?
The price and inventory of TPS54561DPRR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54561DPRR is usually 5 days.
3.What payment methods are accepted for TPS54561DPRR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54561DPRR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54561DPRR?
TPS54561DPRR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54561DPRR 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 TPS54561DPRR?
For technical support, including TPS54561DPRR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54561DPRR requirements.
6.How does Aetrix verify that TPS54561DPRR is sourced from the original manufacturer or authorized distributors?
All TPS54561DPRR 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 TPS54561DPRR meets industry standards.
7.What is the process for return or replacement of TPS54561DPRR?
All TPS54561DPRR units undergo pre-shipment inspection (PSI). If there is an issue with TPS54561DPRR, 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 TPS54561DPRR part is unused and in its original packaging.
Return procedure for TPS54561DPRR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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