TPS544C20RVF - 18V, 30A SWIFT Buck Converter | Texas Instruments
MPN: TPS544C20RVF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $9.85 | $985.00 |
| 500 | $8.95 | $4,475.00 |
| 1,000 | $8.1 | $8,100.00 |
TPS544C20RVF Overview
A buck converter (step-down switching regulator) is a type of DC-DC converter that produces a lower regulated output voltage from a higher input voltage by rapidly switching an inductor and rectifying the resulting waveform. Within the power-management IC hierarchy, buck converters belong to the broader switching-regulator family alongside boost, buck-boost, and SEPIC topologies, and they are favored over linear regulators (LDOs) when high step-down ratios and high output currents must be achieved with high efficiency. The TPS544C20 belongs to TI's SWIFT (Switcher With Integrated FET Technology) family of integrated FET converters, which combine the power stage, control logic, and compensation into a single IC.
Key features of the TPS544C20RVF include 30A continuous output current in a 5 mm × 7 mm LQFN-CLIP package, selectable D-CAP / D-CAP2 modes for flexible transient tuning, lossless low-side MOSFET current sensing that eliminates external shunt resistors, and a PMBus 1.3 / 1.2 compatible interface for output voltage margining, fault monitoring, telemetry of VOUT / IOUT / temperature, and on/off control. An internal 600 mV ±0.5% reference and a MODE pin allow the user to select between D-CAP and D-CAP2 control architectures.
Typical applications include high-density 30A point-of-load (POL) rails on server motherboards, telecom base-station equipment, FPGA and ASIC core/SerDes supplies, industrial automation controllers, and networking switches where PMBus telemetry and adaptive voltage scaling (AVS) are required. The wide 4.5V to 18V input range also makes it well suited for 5V and 12V intermediate bus architectures. The combination of high switching frequency capability, integrated power stage, and digital interface keeps the external BOM small and the transient response fast.
When designing with this device, ensure adequate PCB copper area for thermal dissipation (the LQFN-CLIP thermal pad must be soldered to a sufficiently large copper pour), respect the 18V absolute-maximum input rating, and follow TI's recommended inductor and output-capacitor selection from the manufacturer datasheet for stable D-CAP/D-CAP2 operation.
Drop-in alternatives for TPS544C20RVF — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TPS544C20RVF (same form factor and footprint) — differing in Digital Interface, Package, Mounting Type, Output Voltage Range, Topology.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TPS544C20RVFR
✅ Drop-In✓ In Stock
$5.21 / Unit
View Datasheet →TPS544C20RVFT
✅ Drop-In📋 Reference alternative (not in catalog)
TPS544B20RVFR
✅ Drop-In✓ In Stock
$5.1 / Unit
View Datasheet →TPS544C25RVFR
✅ Drop-In📋 Reference alternative (not in catalog)
TPS544C20RVF Maximum Ratings & Electrical Characteristics
| Topology | Synchronous Buck (Step-Down) |
| Input Voltage Range | 4.5 V to 18 V |
| Output Voltage Range | 0.6 V to 5.5 V |
| Continuous Output Current | 30 A |
| Reference Voltage Accuracy | 600 mV, ±0.5% |
| High-Side MOSFET RDS(on) | 4.5 mΩ (typical, integrated NexFET) |
| Low-Side MOSFET RDS(on) | 2.0 mΩ (typical, integrated NexFET) |
| Control Modes | D-CAP and D-CAP2 (selectable via MODE pin) |
| Current Sensing | Lossless, internal low-side MOSFET sensing |
| Digital Interface | PMBus 1.3 / 1.2 compatible |
| Package | 40-pin LQFN-CLIP (RVF) 5 mm × 7 mm |
| Pitch | 0.5 mm |
| Operating Temperature Range | -40C to +125C |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
TPS544C20RVF 40-pin lqfn-clip (rvf) 5 mm × 7 mm Pin Configuration Guide
Pin configuration for TPS544C20RVF (40-pin lqfn-clip (rvf) 5 mm × 7 mm package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for TPS544C20RVF.
Refer to the datasheet for full pin configuration.
Typical Applications
TPS544C20RVF is suitable for 6 applications: Server and Datacenter Point-of-Load (POL), Telecom Base Station Power Supplies, FPGA and ASIC Core/SerDes Power, Industrial Automation Controllers, Networking Switch and Router ASIC Supplies, High-End Storage and SSD Controller Power.
Server and Datacenter Point-of-Load (POL)
The TPS544C20RVF delivers 30A from a 4.5V-18V intermediate bus to power server CPU cores, memory, and ASICs in hyperscale datacenters. Its 30A continuous current in 5 mm × 7 mm LQFN-CLIP footprint enables high-density POL designs that minimize PCB area, while the PMBus interface provides real-time VOUT / IOUT / temperature telemetry for adaptive voltage scaling (AVS) and load-line optimization across many parallel rails on a single motherboard.
Recommended
Telecom Base Station Power Supplies
The TPS544C20RVF is well matched to 12V intermediate-bus architectures powering RF power amplifiers, baseband DSPs, and SERDES PHYs in 4G/5G base stations. Its 4.5V-18V input range accepts the standard -48V telecom bus after a front-end intermediate bus converter, while 30A output handles multi-amp transients during PA burst mode. The PMBus interface supports margining and fault telemetry required by telecom OAM requirements.
Recommended
FPGA and ASIC Core/SerDes Power
FPGA and ASIC core rails typically demand 30A with sub-1V output and tight DC accuracy, which the TPS544C20RVF delivers via its 0.6V-5.5V adjustable output and ±0.5% reference. Selectable D-CAP2 mode provides the fast transient response required by FPGA core voltage transitions between DVFS states, while PMBus enables AVS closed-loop control. The integrated NexFET power stage reduces PCB area versus discrete FET solutions.
Recommended
Industrial Automation Controllers
Industrial PLCs and motor-control boards require robust 24V-input-tolerant point-of-load converters; the TPS544C20RVF's 18V maximum and 4.5V minimum comfortably cover 12V and 15V industrial buses. With 30A continuous output and -40C to +125C operating range, the device survives factory-floor thermal stress, while PMBus monitoring allows centralized fault logging across a machine's controllers via I2C/SMBus.
Recommended
Networking Switch and Router ASIC Supplies
Enterprise switches and routers rely on high-current, low-voltage rails to power switching ASICs and packet processors. The TPS544C20RVF delivers 30A in a small 5 mm × 7 mm footprint, enabling dense multi-rail designs. Its PMBus interface supports telemetry needed for thermal and power-budget management in chassis with many parallel switch ASICs, and D-CAP2 control handles fast load steps typical of packet-processing traffic.
Recommended
High-End Storage and SSD Controller Power
Enterprise SSDs and storage controllers require tightly regulated low-voltage, high-current rails with telemetry for predictive failure analysis. The TPS544C20RVF's 30A output, 0.6V minimum VOUT, and PMBus-reported IOUT and temperature enable storage designers to monitor per-rail health. The LQFN-CLIP footprint fits dense storage controller PCBs where every square millimeter of board area matters.
Recommended
Recommended Products Summary
Engineering reference data for TPS544C20RVF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS544C20RVFR | TPS544C20RVFT | TPS544B20RVFR | TPS544C25RVFR |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 40-pin LQFN-CLIP (RVF) 5x7 mm | 40-pin LQFN-CLIP (RVF) 5x7 mm - same | 40-pin LQFN-CLIP (RVF) 5x7 mm - same | 40-pin LQFN-CLIP (RVF) 5x7 mm - same | 40-pin LQFN-CLIP (RVF) 5x7 mm - same |
| Output Current | 30 A | 30 A | 30 A | 20 A | 30 A |
| Input Voltage Range | 4.5 V to 18 V | 4.5 V to 18 V | 4.5 V to 18 V | 4.5 V to 18 V | 4.5 V to 18 V |
| Output Voltage Range | 0.6 V to 5.5 V | 0.6 V to 5.5 V | 0.6 V to 5.5 V | 0.6 V to 5.5 V | 0.5 V to 5.5 V |
| Control Mode Pin Function | MODE (D-CAP / D-CAP2 select) | MODE (D-CAP / D-CAP2 select) | MODE (D-CAP / D-CAP2 select) | MODE (D-CAP / D-CAP2 select) | SYNC / RESET_B (dual-function) |
| PMBus Interface | Yes (1.3 / 1.2 compatible) | Yes (1.3 / 1.2 compatible) | Yes (1.3 / 1.2 compatible) | Yes (1.3 / 1.2 compatible) | Yes (1.3 / 1.2 compatible) |
| Price Tier (qty 1000) | $8.10 | $8.10 | $8.10 | $7.20 | $9.50 |
Key Differentiators
- Pin-compatible 30A option with same NexFET power stage (vs TPS544B20RVFR)
- MODE pin preserves selectable D-CAP / D-CAP2 control (vs TPS544C25RVFR)
- Lower quiescent current vs older TPS54620 family (vs TPS54620RHLR)
Design Notes
Estimated: at VIN=12V, VOUT=1V, and 30A load, the TPS544C20RVF dissipates (12V-1V) × 30A = 330W. Even at 95% efficiency that is ~16.5W of heat in the LQFN-CLIP package. The exposed thermal pad MUST be soldered to a multi-layer PCB copper pour of at least 1 square inch on top and inner layers with thermal vias; without this the device will quickly thermal-shutdown at full load.
Place input capacitors (typically 22 µF X7R ceramic per phase) as close as possible to the PVIN and PGND pins to minimize switching-loop inductance. The exposed thermal pad should use an array of 0.3 mm thermal vias on a 1 mm grid connecting top-layer copper to inner-layer ground planes. Keep the MODE / PMBus traces away from the switching node to avoid noise coupling into the digital interface.
Do not exceed the 18V absolute-maximum input rating; transients above 18V will permanently damage the integrated NexFETs. Always populate both bootstrap (BOOT) and bypass capacitors exactly as shown in the manufacturer datasheet typical application circuit. Do not leave PMBus address straps floating - tie ADRx to AGND or VLOG through a resistor to set the desired SMBus address and avoid bus collisions.
When operating in D-CAP2 mode, the output-capacitor ESR must remain within the loop-stable range specified in the manufacturer datasheet (typically 1-10 mΩ for ceramic). Excessive ESR causes sub-harmonic oscillation; insufficient ESR causes poor transient response. TI's WEBENCH Power Designer tool can simulate stability for chosen inductor and capacitor combinations before PCB layout.
Compliance Information
Standard TI lead-free, halogen-free, RoHS-compliant part per TI product folder. Not AEC-Q100 qualified; for automotive 30A applications consider the TI-Q1 automotive-graded SWIFT variants.
