TPS54227是TI公司的一款转换器（集成开关）产品，TPS54227是4.5V 至 18V 输入、2A 同步降压转换器，本页介绍了TPS54227的产品说明、应用、特性等，并给出了与TPS54227相关的TI元器件型号供参考。
TPS54227 - 4.5V 至 18V 输入、2A 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 TPS54227 is an adaptive on-time D-CAP2 mode synchronous buck converter. TheTPS54227 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 TPS54227 uses the D-CAP2 mode control which provides a fast transient response with no external compensation components. The TPS54227 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 7 V. The device also features an adjustable soft start time. The TPS54227 is available in the 8-pin DDA 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 7.0 V
- Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications – 155 mΩ (High Side) and 108 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
