TPS54225 - 4.5V 至 18V 输入、2A 同步降压 SWIFT? 转换器

TPS54225是TI德州仪器公司的一款转换器（集成开关）产品，TPS54225是4.5V 至 18V 输入、2A 同步降压 SWIFT? 转换器，本站介绍了TPS54225的封装应用图解、特点和优点、功能等，并给出了与TPS54225相关的TI元器件型号供参考。

TPS54225 - 4.5V 至 18V 输入、2A 同步降压 SWIFT? 转换器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The TPS54225 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54225 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54225 uses the D-CAP2™ mode control which provides a fast transient response with no external compensation components.

The TPS54225 also has a proprietary circuit that enables the device to adapt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VCC input , and from 2-V to 18-V VIN input power supply voltage. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow start time and a power good function. The TPS54225 is available in the 14 pin HTSSOP package, and designed to operate from –40°C to 85°C.

产品特性

D-CAP2™ Mode Enables Fast Transient Response
Low Output Ripple and Allows Ceramic Output Capacitor
Wide VCC Input Voltage Range: 4.5 V to 18 V
Wide VIN Input Voltage Range: 2 V to 18 V
Output Voltage Range: 0.76 V to 5.5 V
Highly Efficient Integrated FET’s Optimized for Lower Duty Cycle Applications – 160 mΩ (High Side) and 110 mΩ (Low Side)
High Efficiency, less than 10 µA at shutdown
High Initial Bandgap Reference Accuracy
Adjustable Soft Start
Pre-Biased Soft Start
700-kHz Switching Frequency (fSW)
Cycle-By-Cycle Overcurrent Limit
Power Good Output
APPLICATIONS
- Wide Range of Applications for Low Voltage System
  - Digital TV Power Supply
  - High Definition Blu-ray Disc™ Players
  - Networking Home Terminal
  - Digital Set Top Box (STB)

D-CAP2, PowerPAD are trademarks of Texas Instruments. Blu-ray Disc is a trademark of Blu-ray Disc Association.

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