TPS56221 - High-Current Synchronous Buck Converter
The TPS56221 from Texas Instruments is the industry’s smallest, most efficient step-down regulator with integrated power MOSFETs in a 5 x 6-mm footprint to support up to 25 A output current. It is the first switcher to integrate TI’s NexFET™ technology, providing increased thermal performance, protection, efficiency and reliability.
The TPS56221 is a high-efficiency and high-current synchronous buck converter designed to operate from a supply between 4.5...14 V. The device is capable of producing an output voltage as low as 0.6 V at loads up to 25 A. Integrated NexFET™ Power MOSFETs provide a small footprint and ease of use.
The device implements a voltage-mode control with voltage feed-forward compensation that responds instantly to input voltage change.
TPS56221 is available in a thermally enhanced 22 pin PQFN (DQP) PowerPAD™ package.
The device offers design flexibility with a variety of user programmable functions, including soft-start, overcurrent protection (OCP) levels, and loop compensation.
TPS56221 Features
- 4.5...14 V input voltage range
- Incorporates power block technology
- Up to 25 A output current
- Fixed frequency options of 300 kHz, 500 kHz and 1 MHz
- High-side and low-side MOSFET RDS(on) sensing
- Programmable soft-start
- 600 mV reference voltage with 1% accuracy
- Voltage mode control with feed-forward
- Supports pre-biased output
- Thermal shutdown
- 22 Pin 5 mm x 6 mm PQFN PowerPAD package
TPS56221 Applications
- Point-of-Load (POL) power modules
- High density DC-DC converters for telecom and networking applications
