Manufacturer: Texas Instruments
Key Specifications
- Package: VSON-10 (DRC)
- Input Voltage Range: 4.5V to 18V
- Output Current: 2A
- Synchronous Rectifier: Yes
- Switching Frequency: 500kHz (typical)
- Operating Temperature Range: -40°C to 125°C (junction)
- Control Architecture: D-CAP2™ Mode
- Quiescent Current: 100µA (typical, to be verified)
The TPS54228DRCR from Texas Instruments is a compact, synchronous step-down (buck) converter designed for a wide range of power-supply applications. It operates from an input voltage range of 4.5V to 18V, making it suitable for 5V and 12V bus systems. The device delivers up to 2A of continuous output current with excellent load and line regulation.
Key Features
- Integrated synchronous rectifier MOSFETs for high efficiency and reduced external component count.
- D-CAP2™ control mode enables fast transient response and stable operation with low ESR output capacitors.
- Fixed 500kHz switching frequency (typical) balances efficiency and solution size.
- Low quiescent current (typical 100µA, to be verified) supports battery-powered and standby applications.
- Wide operating junction temperature range from -40°C to 125°C.
- Available in a compact VSON-10 (DRC) package for space-constrained designs.
Applications
- Point-of-load (POL) converters for FPGAs, DSPs, and microcontrollers.
- Networking and telecom equipment.
- Industrial and consumer electronics.
- Distributed power systems and 5V/12V rail conversion.
Selection Guidance
When selecting the TPS54228DRCR, verify the input voltage range, output current requirement, and thermal conditions. The D-CAP2 mode simplifies loop compensation, but proper output capacitor selection is essential for stability. Refer to the datasheet for detailed design equations and recommended component values. For lower output currents, consider the TPS54226 family; for higher currents, evaluate TPS54229 or other TI converters.
