TI TPS40170宽输入电压电源PWM控制解决方案

TI 公司的TPS40170是宽输入电压（4.5V-60V）同步电源PWM控制器，集成的600mV基准电压精度为1%，可编程频率从100kHz到600kHz，具有系统保护和监视功能，如可编UVLO，可编OCP等，LDO输出8.0-V和 3.3-V，主要用在POL模块，工业，网络和通信设备的高功率密度DC/DC转换器。本文介绍了TPS40170主要特性，方框图，应用设计电路图及其材料清单，以及TPS40170EVM-578评估板主要特性，电路图，材料清单和PCB布局图。

TPS40170：4.5-V TO 60-V WIDE-INPUT SYNCHRONOUS PWM BUCK CONTROLLER TPS40170 is a full-featured, synchronous PWM buck controller that operates at an input voltage between 4.5 V and 60 V and is optimized for high- power-density, high-reliability DC/DC converter applications. The controller implements voltage-mode control with input-voltage feed-forward compensation that enables instant response to input voltage change. The switching frequency is programmable from 100 kHz to 600 kHz.

The TPS40170 has a complete set of system protection and monitoring features such as programmable UVLO, programmable overcurrent protection (OCP) by sensing the low-side FET, selectable short-circuit protection (SCP) by sensing the high-side FET and thermal shutdown. The ENABLE pin allows for system shutdown in a low-current (1 µA typical) mode.

TPS40170主要特性:

Wide-Input Voltage Range from 4.5 V to 60 V
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