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Texas Instruments TPS548D22RVFT
- Part No.:
- TPS548D22RVFT
- Manufacturer:
- Texas Instruments
- Package:
- 40-PowerLFQFN
- Datasheet:
-
TPS548D22RVFT.pdf
- Description:
- IC REG BUCK ADJ 40A 40LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:680
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Product details
Overview
TPS548D22 from Texas Instruments is a 40-A synchronous step-down DC/DC converter with integrated 2.9-mΩ high-side and 1.2-mΩ low-side NexFET™ MOSFETs, D-CAP3™ adaptive on-time control, and full differential remote sensing. It operates from 1.5-V to 16-V PVIN and 4.5-V to 22-V VDD, delivers 0.6-V to 5.5-V output, and supports 425-kHz to 1.05-MHz selectable switching frequencies - ideal for high-density ASIC/FPGA core rail power in enterprise servers and telecom infrastructure.
For engineers reviewing the TPS548D22 datasheet, TPS548D22 pinout, TPS548D22 application, or TPS548D22 equivalent, key selection considerations include its 40-A continuous current capability, ±0.5% reference accuracy over –40°C to +125°C, programmable soft-start (1–8 ms), differential voltage sense architecture, and thermal performance in the 7-mm × 5-mm LQFN-CLIP (RVFT) package.
Technical Context
The TPS548D22 implements D-CAP3™ control with adaptive on-time modulation, enabling stable operation with all-ceramic output capacitors without external compensation. Its true differential remote sense amplifier (RSP/RSN inputs) rejects PCB trace IR drop and supports precise load regulation across wide temperature and load ranges.
Current limiting uses temperature-compensated RDS(on) sensing via the ILIM pin, supporting both positive and negative valley current limits (±40 A at RILIM = 130 kΩ). Fault protection includes programmable hiccup-mode OVP/UVP, thermal shutdown at 160°C, and PGOOD with 1.024-ms delay and ±3% threshold accuracy relative to VREF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PVIN Range | 1.5 V to 16 V - supports wide-input industrial and telecom supply rails including partially discharged batteries and intermediate bus voltages. |
| VDD Range | 4.5 V to 22 V - enables independent bias supply for robust gate drive under low-PVIN conditions. |
| Output Current | 40 A continuous - delivered by integrated 2.9-mΩ/1.2-mΩ MOSFET pair with optimized thermal path via exposed thermal pad. |
| Reference Accuracy | ±0.5% at 0.9 V over –40°C to +125°C - ensures tight output regulation for sensitive SoC/FPGA core supplies. |
| Switching Frequencies | 425 kHz / 650 kHz / 875 kHz / 1.05 MHz - selected via FSEL resistor strap; higher frequencies reduce inductor size but increase switching loss. |
| Differential Sense | True RSP/RSN inputs with ±3.5-mV offset and 7-MHz unity-gain bandwidth - enables accurate remote voltage regulation at point-of-load. |
| Soft-Start Time | Selectable 1 ms / 2 ms / 4 ms / 8 ms via MODE pin - controls inrush current during startup to prevent input rail collapse. |
Pinout & Package
The TPS548D22 is housed in a 7-mm × 5-mm, 40-pin LQFN-CLIP (RVFT) package with an exposed thermal pad on the bottom for enhanced heat dissipation. The package integrates clip-bonded power FETs and supports >40-A current handling with low thermal resistance (RθJC(bot) = 0.6°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (Pins 6–12) | Switch node | High-current connection to output inductor; 7 parallel pins minimize trace inductance and conduction loss. |
| PGND (Pins 13–20) | Power ground | Low-impedance return path for internal FETs; 8 pins ensure minimal ground bounce under 40-A transients. |
| PVIN (Pins 21–26) | Main power input | Input supply for integrated FETs; 6 dedicated pins reduce voltage drop and improve thermal spreading. |
| VSEL (Pin 33) | Reference voltage select | Sets initial VOUT from 0.6 V to 1.2 V in 50-mV steps without external feedback resistors. |
| FSEL (Pin 32) | Frequency select | Resistor-strapped input to choose one of four fixed switching frequencies (425 kHz–1.05 MHz). |
| RSP/RSN (Pins 39/38) | Differential sense inputs | Connect directly to load-side VOUT and AGND for precision remote voltage regulation, rejecting PCB IR drop. |
| ILIM (Pin 36) | Overcurrent limit set | Resistor-to-ground sets valley current limit (e.g., 40 A at 130 kΩ); includes temperature compensation for RDS(on). |
| PGOOD (Pin 35) | Power-good status | Open-drain output asserting after 1.024-ms delay when VOUT reaches 92–111% of target; used for sequencing and fault reporting. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP3™ control | Enables stable regulation with only ceramic output capacitors - eliminates need for external compensation network and reduces BOM count. |
| Full differential remote sense | Rejects up to 100 mV of PCB trace IR drop between regulator and load, maintaining ±0.5% output accuracy at point-of-load. |
| Adaptive on-time frequency tracking | Maintains preset switching frequency across wide VIN/VOUT ranges while increasing fSW during fast load steps for improved transient response. |
| Eco-mode™/FCCM selection | Enables discontinuous conduction (Eco-mode) for light-load efficiency or forced continuous conduction (FCCM) for predictable ripple and EMI profile. |
| Programmable hiccup OVP/UVP | Configurable fault response (latch-off or hiccup) protects downstream loads during overvoltage (120% VREF) or undervoltage (68% VREF) events. |
Applications
| Enterprise Server Core Rails | Telecom Baseband Processing |
|---|---|
Use Scenario: Powering 0.8-V/35-A CPU cores in dual-socket rack servers with strict transient response requirements. IC Role / Device Role / Timing Role: Primary point-of-load buck regulator delivering tightly regulated core voltage with <100-µs recovery from 20-A load steps. Use Value: Differential sensing maintains ±5-mV regulation accuracy at the CPU die despite 20-mΩ PCB trace resistance; D-CAP3™ enables sub-2-µs transient response. |
Use Scenario: Supplying 1.2-V/25-A FPGA I/O banks in 5G wireless baseband units operating in thermally constrained enclosures. IC Role / Device Role / Timing Role: High-efficiency, compact DC/DC converter with thermal-aware current limiting and hiccup-mode fault protection. Use Value: 40-A rating and 0.6°C/W junction-to-case thermal resistance enable full-load operation at 85°C ambient with natural convection cooling. |
| Industrial PLC Power Modules | Enterprise SSD Controller Rails |
Use Scenario: Generating 3.3-V/15-A auxiliary rails for real-time I/O processing in ruggedized programmable logic controllers. IC Role / Device Role / Timing Role: Robust, fault-tolerant buck converter with programmable UVLO, OVP, and thermal shutdown for industrial environments. Use Value: EN_UVLO pin allows precise input sequencing; VDD UVLO hysteresis (0.2 V) prevents oscillation during brownout conditions. |
Use Scenario: Providing 1.8-V/12-A power to NVMe SSD controller ASICs requiring low-noise, fast-transient response in dense storage arrays. IC Role / Device Role / Timing Role: High-bandwidth synchronous buck with 1.05-MHz option and FCCM mode for controlled EMI spectrum. Use Value: 650-kHz default frequency balances efficiency and size; PGOOD delay (1.024 ms) aligns with SSD firmware boot timing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP8770GQ-Z | 30-A rated, 2.5-mΩ/1.1-mΩ MOSFETs, 2.7-V to 16-V input, no differential sense, requires external compensation. | Lacks remote sensing and D-CAP3™ simplicity; suited for cost-sensitive, lower-current designs where layout space permits compensation components. | Choose MP8770GQ-Z only if output current ≤30 A and differential sensing is unnecessary; verify loop stability with ceramic output caps. |
| ISL9123IRZ-T7A | 15-A rated, 3.5-mΩ/2.0-mΩ MOSFETs, 2.5-V to 5.5-V input, integrated LDO bias, no VDD pin, no programmable frequency. | Targeted at ultra-low-voltage, low-power portable applications; incompatible with 12-V intermediate bus or 40-A loads. | ISL9123IRZ-T7A is not a functional alternative for TPS548D22's 40-A, 16-V PVIN, or differential-sense use cases - consider only for sub-15-A battery-powered systems. |
Compared with MP8770GQ-Z and ISL9123IRZ-T7A, the TPS548D22 uniquely combines 40-A capability, differential remote sensing, and D-CAP3™ zero-compensation operation - making it irreplaceable for high-accuracy, high-density server and telecom POL applications where layout area and transient performance are critical.
Availability
TPS548D22 is available at Aetrix Electronics and suitable for enterprise server power delivery, 5G baseband processing, and industrial PLC power modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS548D22 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-efficiency DC/DC conversion and system-level power architecture.
The TPS548D22 belongs to TI's SWIFT™ family of high-current synchronous buck converters, designed specifically for demanding point-of-load applications in data center, networking, and industrial computing where power density, accuracy, and reliability are paramount.
FAQ
What is the maximum continuous output current supported by the TPS548D22?
The TPS548D22 supports 40-A continuous output current under proper thermal conditions - enabled by its integrated 2.9-mΩ high-side and 1.2-mΩ low-side NexFET™ MOSFETs, 7-mm × 5-mm LQFN-CLIP (RVFT) package with exposed thermal pad, and junction-to-board thermal resistance of 3.6°C/W. Derating applies above 85°C ambient or with insufficient airflow.
Does the TPS548D22 require external compensation components?
No, the TPS548D22 does not require external compensation components. Its D-CAP3™ control architecture uses emulated current information and adaptive on-time modulation to maintain stability with all-ceramic output capacitors - eliminating the need for external RC networks and reducing design complexity and BOM count.
How is the output voltage programmed on the TPS548D22 without feedback resistors?
The TPS548D22 uses the VSEL pin to program the internal reference voltage from 0.6 V to 1.2 V in 50-mV increments, enabling direct output voltage setting without external resistor dividers. This simplifies layout and improves accuracy by removing resistor tolerance and divider leakage errors - especially valuable in high-precision core rail applications.
What protection features does the TPS548D22 include?
The TPS548D22 includes comprehensive protection: cycle-by-cycle overcurrent limiting (programmable via ILIM), hiccup or latch-off OVP/UVP (120%/68% VREF thresholds), thermal shutdown at 160°C, VDD UVLO with 4.25-V turn-on and 0.2-V hysteresis, and PGOOD with 1.024-ms delay and ±3% accuracy. All protections are internally implemented and require no external components.
Can the TPS548D22 operate with only ceramic output capacitors?
Yes, the TPS548D22 is fully compatible with all-ceramic output capacitors due to its D-CAP3™ control architecture, which synthesizes current information internally and eliminates phase compensation requirements. This enables smaller, lower-ESR output filter designs - critical for space-constrained server and telecom applications where MLCCs dominate.
TPS548D22RVFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SWIFT™, D-CAP3™, Eco-Mode™
- Package/Case:
- 40-PowerLFQFN
- 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):
- 1.5V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 40A
- Frequency - Switching:
- Selectable
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-LQFN-CLIP (7x5)
TPS548D22RVFT FAQ
1.How can I place an order for TPS548D22RVFT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS548D22RVFT 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 TPS548D22RVFT reliable?
The price and inventory of TPS548D22RVFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS548D22RVFT is usually 5 days.
3.What payment methods are accepted for TPS548D22RVFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS548D22RVFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS548D22RVFT?
TPS548D22RVFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS548D22RVFT 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 TPS548D22RVFT?
For technical support, including TPS548D22RVFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS548D22RVFT requirements.
6.How does Aetrix verify that TPS548D22RVFT is sourced from the original manufacturer or authorized distributors?
All TPS548D22RVFT 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 TPS548D22RVFT meets industry standards.
7.What is the process for return or replacement of TPS548D22RVFT?
All TPS548D22RVFT units undergo pre-shipment inspection (PSI). If there is an issue with TPS548D22RVFT, 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 TPS548D22RVFT part is unused and in its original packaging.
Return procedure for TPS548D22RVFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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