TPS54425是TI公司的一款转换器（集成开关）产品，TPS54425是具有 D-CAP2? 模式的 4.5V 至 18V 输入、4A 同步降压转换器，本页介绍了TPS54425的产品说明、应用、特性等，并给出了与TPS54425相关的TI元器件型号供参考。
TPS54425 - 具有 D-CAP2? 模式的 4.5V 至 18V 输入、4A 同步降压转换器 - 转换器（集成开关） - DC/DC开关稳压器 - TI公司（Texas Instruments，德州仪器）
The TPS54425 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54425 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 TPS54425 uses the D-CAP2 mode control which provides a very fast transient response with no external compensation components. The TPS54425 also has a proprietary circuit that enables the device to adopt 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 VIN input. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable soft start time and a power good function. The TPS54425 is available in the 14-pin HTSSOP package, and designed to operate from –40°C to 85°C.
- D-CAP2™ Mode Enables Fast Transient Response
- Low Output Ripple and Allows Ceramic Output Capacitor
- Wide VIN Input Voltage Range: 4.5 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 – 65 mΩ (High Side) and 55 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 Over Current 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)
- Wide Range of Applications for Low Voltage System
