Texas Instruments TPS548A28RWWR
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 21-PowerVFQFN |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Voltage - Input (Max) | 16V |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Current - Output | 15A |
| Supplier Device Package | 21-VQFN-HR (4x3) |
| Output Configuration | Positive |
| Function | Step-Down |
| Topology | Buck |
| Frequency - Switching | 600kHz, 800kHz, 1MHz |
| Synchronous Rectifier | Yes |
| Voltage - Output (Min/Fixed) | 0.6V |
| Voltage - Output (Max) | 5.5V |
| Voltage - Input (Min) | 2.7V |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | TPS548A28 |
| REACH Status | REACH Unaffected |
| Standard Package | 3,000 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
TPS548A28RWWR - High-Efficiency 15A Synchronous Buck Converter with Remote Sensing
The TPS548A28RWWR is a high-performance synchronous buck (step-down) DC-DC converter from Texas Instruments, designed for applications requiring high efficiency and precise voltage regulation. It features a wide input voltage range of 2.7V to 16V and delivers an adjustable output voltage from 0.6V to 5.5V with a maximum output current of 15A. The device integrates high-efficiency 10.2mΩ (high-side) and 3.1mΩ (low-side) MOSFETs, reducing conduction losses and improving thermal performance. Packaged in a compact 21-pin VQFN-HR (4x3mm), it is ideal for space-constrained designs in industrial, computing, and telecom applications. The converter supports 600kHz, 800kHz, and 1MHz switching frequencies, allowing flexibility in power supply design.
15A synchronous buck converter Key Features
The TPS548A28RWWR incorporates D-CAP3™ adaptive on-time control, eliminating the need for external compensation while providing ultra-fast transient response. It includes differential remote sensing for accurate voltage regulation (±1% reference voltage accuracy) and an internal 3V LDO for biasing. Additional features include programmable soft-start, Eco-mode™ for high light-load efficiency, and selectable forced continuous conduction mode (FCCM) or pulse-skipping operation. It also provides robust protection features such as overcurrent (OC), undervoltage (UV), and overvoltage (OV) lockout, ensuring system reliability in demanding environments.
Applications
This converter ic is widely used in data center power supplies, rack servers, blade servers, industrial PCs, and networking equipment due to its high efficiency and compact footprint. It is also suitable for FPGA/ASIC power delivery, telecom infrastructure, and embedded computing systems where precise voltage regulation and fast load transient response are critical. The device's ability to operate in -40°C to +125°C junction temperature ranges makes it suitable for harsh industrial environments.
Selection Advantages
The TPS548A28RWWR offers high power density, simplified design (no external compensation needed), and superior thermal performance due to its integrated low-RDS(on) MOSFETs. Its pin-selectable switching frequency allows optimization for efficiency or size, while differential remote sensing ensures tight voltage regulation even in long PCB trace scenarios. Additionally, Texas Instruments provides extensive design support, including reference schematics and simulation models, reducing development time.
Alternative DC-DC converter Models
● TPS548D22 (Texas Instruments) – A 20A alternative with similar D-CAP3 control, optimized for higher current applications.
● LTC3633 (Analog Devices) – A 15A buck converter with MODE/PLLIN pin for frequency synchronization, ideal for noise-sensitive designs.
● MPQ8633B (Monolithic Power Systems) – A 15A synchronous buck converter with PMBus interface for digital power management.
● ISL8274M (Renesas) – A 15A high-efficiency converter with adjustable switching frequency (300kHz–1.5MHz) for flexible power solutions.
