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Texas Instruments TPS548D22RVFR
- Part No.:
- TPS548D22RVFR
- Manufacturer:
- Texas Instruments
- Package:
- 40-PowerLFQFN
- Datasheet:
-
TPS548D22RVFR.pdf
- Description:
- IC REG BUCK ADJ 40A 40LQFN
- Quantity:
- Payment:
- Shipping:
Inventory:849
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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, true differential remote sensing, and 0.6–5.5-V programmable output voltage. It operates from 1.5-V to 16-V PVIN input and supports 4.5-V to 22-V VDD bias, delivering high efficiency and ultra-fast transient response for FPGA core rails and enterprise SSD power delivery.
For engineers reviewing the TPS548D22 datasheet, TPS548D22 pinout, TPS548D22 application, or TPS548D22 equivalent, key selection considerations include its 40-A continuous current rating, selectable 425/650/875/1050-kHz switching frequencies, ±0.5% reference accuracy over –40°C to +125°C, differential sense amplifier bandwidth (5–7 MHz), and thermal performance in the 7-mm × 5-mm LQFN-CLIP (RVF) package.
Technical Context
The TPS548D22 implements D-CAP3™ control architecture with adaptive on-time modulation, enabling stable operation with all-ceramic output capacitors without external compensation. Its differential remote sense amplifier (RSP/RSN inputs) provides ±3.5-mV offset and 75-dB open-loop gain for precise load regulation across PCB trace resistance.
Current limiting uses temperature-compensated RDS(on) sensing via the ILIM pin, supporting programmable valley OCP thresholds (e.g., 20 A, 30 A, 40 A) with ±10–20% tolerance depending on RILIM. Fault protection includes latch-off or hiccup-mode OVP/UVP, thermal shutdown at 155–165°C, and PGOOD with 1.024-ms delay and 105–111% VREF trip threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PVIN Input Range | 1.5 V to 16 V - supports wide-input industrial and telecom supplies including partially discharged batteries and intermediate bus rails. |
| VDD Bias 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 FETs, validated with thermal pad and airflow up to 400 LFM. |
| Reference Accuracy | ±0.5% at 0.9 V over –40°C to +125°C - ensures tight output regulation for ASIC/FPGA core voltages. |
| Switching Frequencies | 425 / 650 / 875 / 1050 kHz - selected via FSEL resistor strap; higher frequencies reduce inductor size but increase switching loss. |
| Differential Sense Bandwidth | 5–7 MHz unity-gain bandwidth - enables fast correction of IR-drop-induced output errors in high-current point-of-load systems. |
| Thermal Resistance | RθJC(bot) = 0.6°C/W - bottom-side thermal pad enables direct heat transfer to PCB copper, critical for 40-A operation. |
Pinout & Package
The TPS548D22 is housed in a 7-mm × 5-mm, 40-pin LQFN-CLIP (RVF) package with exposed thermal pad. Pin numbering follows TI's top-view layout with SW pins (6–12) and PVIN pins (21–26) grouped for low-inductance power routing, and PGND pins (13–20) distributed to minimize ground bounce.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (6–12) | Switch node | Connects directly to output inductor; multiple parallel pins reduce current density and parasitic inductance. |
| PVIN (21–26) | Power input | High-current input path for integrated FETs; requires short, wide copper pours to minimize voltage drop and EMI. |
| PGND (13–20) | Power ground | Low-impedance return for FET switching current; must be tied to thermal pad and separated from AGND. |
| RSP / RSN | Differential sense inputs | Monitor output voltage at remote load; RSP connects to VOUT+, RSN to VOUT− for Kelvin sensing. |
| VSEL | Reference voltage select | Sets initial VREF from 0.6 V to 1.2 V in 50-mV steps, eliminating feedback divider for fixed-output applications. |
| FSEL | Frequency select | Resistor-strapped input selecting one of four internal ramp amplitudes and corresponding switching frequencies. |
| ILIM | Overcurrent limit set | Resistor-to-ground sets valley current limit threshold (e.g., 40 A @ 130 kΩ) with temperature compensation. |
| PGOOD | Power-good status | Open-drain output asserting after 1.024-ms delay when VOUT reaches 105–111% of target; used for sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP3™ control | Eliminates external compensation components while supporting both bulk electrolytic and small MLCC output capacitors. |
| True differential remote sense | Compensates for up to 100 mΩ PCB trace resistance between regulator and load, maintaining ±0.5% regulation accuracy. |
| Adaptive on-time frequency tracking | Maintains preset switching frequency across wide VIN/VOUT ranges and dynamically increases fSW during load transients for faster response. |
| Eco-mode™ / FCCM selection | Enables discontinuous conduction (light-load efficiency) or forced continuous conduction (low-noise, predictable ripple) via MODE pin. |
| Programmable soft-start | Four selectable times (1/2/4/8 ms) via MODE resistor strap, controlling inrush current into large output capacitor banks. |
Applications
| Enterprise SSD Power Rail | ASIC Core Voltage Supply |
|---|---|
Use Scenario: Powers NVMe SSD controller and NAND flash arrays requiring stable 1.2-V/30-A supply with <1% droop under 20-A/µs load steps. IC Role / Device Role / Timing Role: Primary buck regulator with differential remote sense correcting for PCB IR drop between VRM and BGA pads. Use Value: Delivers 92% peak efficiency at 30 A (VIN=12 V, VOUT=1.2 V) and maintains ±0.5% regulation using integrated 0.9-V reference and RSP/RSN inputs. | Use Scenario: Supplies 0.85-V core rail to 7-nm ASIC in network switch with strict <5-mV dynamic deviation spec. IC Role / Device Role / Timing Role: High-bandwidth point-of-load converter leveraging D-CAP3™ control and 7-MHz sense amplifier for sub-µs transient recovery. Use Value: Achieves <10-mV peak-to-peak deviation under 8-A to 32-A 2.5-A/µs load step (VIN=12 V, VOUT=0.85 V) per Figure 11. |
| Industrial PLC I/O Module | 5G Baseband Radio PSU |
Use Scenario: Generates isolated 3.3-V/25-A supply for digital I/O banks in harsh industrial environments with wide ambient temperature range. IC Role / Device Role / Timing Role: Main DC/DC stage with hiccup-mode OVP/UVP and thermal shutdown (155°C) for fault containment. Use Value: Maintains operation from –40°C to +125°C junction temperature with ±0.5% reference tolerance and RθJB = 3.6°C/W board-level thermal resistance. | Use Scenario: Provides 5.5-V/20-A auxiliary rail for RF front-end ICs in active antenna units with strict EMI limits. IC Role / Device Role / Timing Role: Synchronous buck with FCCM mode and 425-kHz switching to minimize conducted noise in sensitive analog sections. Use Value: Supports full ceramic output (no electrolytics) via D-CAP3™, reducing board area and improving reliability in thermally constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP8770GQ-Z | 40-A rated, 2.5-mΩ/1.1-mΩ FETs, fixed 600-kHz fSW, no differential sense, 0.6–5.5-V VOUT | Lacks remote sensing and programmable frequency; suited for cost-sensitive, non-critical load regulation. | Select MP8770GQ-Z only if differential sensing and multi-frequency flexibility are unnecessary and lower BOM count is prioritized. |
| ISL91302BHRZ-T7A | Dual 20-A + 20-A outputs, 3.5-mΩ/1.8-mΩ FETs per channel, 0.3–1.5-V VOUT, integrated telemetry | Multi-rail solution with telemetry interface; not single-channel; lower max VOUT (1.5 V vs 5.5 V). | Choose ISL91302BHRZ-T7A when dual independent rails or real-time current/voltage monitoring are required, not for single 40-A high-VOUT designs. |
Compared with MP8770GQ-Z and ISL91302BHRZ-T7A, the TPS548D22 uniquely combines 40-A single-channel capability, true differential remote sensing, four selectable switching frequencies, and 0.6–5.5-V output range-making it optimal for high-accuracy, high-current point-of-load applications where PCB layout IR drop and dynamic regulation are critical.
Availability
TPS548D22 is available at Aetrix Electronics and suitable for enterprise storage, 5G infrastructure, and industrial automation applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
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 technologies, with decades of expertise in high-efficiency DC/DC conversion.
The TPS548D22 belongs to TI's SWIFT™ family of high-current synchronous buck converters, designed specifically for demanding point-of-load applications in datacenter, telecom, and industrial systems where thermal density, transient response, and remote sensing accuracy are paramount.
FAQ
What is the maximum continuous output current supported by the TPS548D22?
The TPS548D22 supports 40-A continuous output current, validated with proper PCB layout, thermal pad connection, and airflow (up to 400 LFM). This rating relies on its integrated 2.9-mΩ high-side and 1.2-mΩ low-side NexFET™ MOSFETs and 0.6°C/W bottom-side thermal resistance. Derating is required above 125°C junction temperature or with insufficient cooling.
How does the TPS548D22 achieve accurate load regulation without external 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 fixed-output configurations without external resistor dividers. Combined with true differential remote sensing (RSP/RSN), it compensates for PCB trace resistance to maintain ±0.5% regulation accuracy at the load, even with >100 mΩ interconnect impedance.
Can the TPS548D22 operate with only ceramic output capacitors?
Yes, the TPS548D22 supports stable operation with all-ceramic output capacitors due to its D-CAP3™ control architecture, which uses emulated current information instead of traditional voltage-mode compensation. This eliminates the need for external phase compensation networks and enables low-ESR, high-frequency MLCC-based designs with minimal footprint.
What protection features are built into the TPS548D22?
The TPS548D22 integrates cycle-by-cycle overcurrent protection (OCP) with programmable valley current limit via ILIM, overvoltage protection (OVP) with 120% VREF trip and 1-µs response, undervoltage protection (UVP) with 68% VREF trip and 1-ms delay, thermal shutdown at 155–165°C, and PGOOD with 1.024-ms assertion delay. OVP/UVP can be configured for hiccup or latch-off behavior.
What is the purpose of the RESV_TRK pin on the TPS548D22?
The RESV_TRK pin on the TPS548D22 is reserved and must not be connected. According to TI's official pin function documentation, this terminal has no internal circuitry or functional role and should remain floating or grounded only if required by mechanical layout constraints-not for electrical operation.
TPS548D22RVFR 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)
TPS548D22RVFR FAQ
1.How can I place an order for TPS548D22RVFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS548D22RVFR 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 TPS548D22RVFR reliable?
The price and inventory of TPS548D22RVFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS548D22RVFR is usually 5 days.
3.What payment methods are accepted for TPS548D22RVFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS548D22RVFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS548D22RVFR?
TPS548D22RVFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS548D22RVFR 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 TPS548D22RVFR?
For technical support, including TPS548D22RVFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS548D22RVFR requirements.
6.How does Aetrix verify that TPS548D22RVFR is sourced from the original manufacturer or authorized distributors?
All TPS548D22RVFR 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 TPS548D22RVFR meets industry standards.
7.What is the process for return or replacement of TPS548D22RVFR?
All TPS548D22RVFR units undergo pre-shipment inspection (PSI). If there is an issue with TPS548D22RVFR, 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 TPS548D22RVFR part is unused and in its original packaging.
Return procedure for TPS548D22RVFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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