TPS54328 - 具有 Eco-mode? 的 4.5V 至 18V 输入、3A 同步降压 SWIFT? 转换器?

TPS54328是TI德州仪器公司的一款转换器（集成开关）产品，TPS54328是具有 Eco-mode? 的 4.5V 至 18V 输入、3A 同步降压 SWIFT? 转换器?，本站介绍了TPS54328的封装应用图解、特点和优点、功能等，并给出了与TPS54328相关的TI元器件型号供参考。

TPS54328 - 具有 Eco-mode? 的 4.5V 至 18V 输入、3A 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 TPS54328 is an adaptive on-time D-CAP2 mode synchronous buck converter. The TPS54328 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54328 uses the D-CAP2 mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54328 to maintain high efficiency during lighter load conditions. The TPS54328 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 TPS54328 is available in 8-pin DDA and 10-pin DRC packages, and is designed to operate over the ambient temperature range of –;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 VIN Input Voltage Range: 4.5 V to 18 V
Output Voltage Range: 0.76 V to 7 V
Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications – 100 mΩ (High Side) and 70 m? (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
Auto-Skip Eco-mode for High Efficiency at Light Load
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)

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