• - 交流-直流(AC-DC)控制器和稳压器
• - 直流-直流(DC-DC)控制器、转换器和稳压器
• - 电压和电流管理
• - 通讯IC
• - 驱动器
• - 热管理

• - 时钟及数据分配
• - 标准逻辑

• - 放大器和比较器
• - 模拟开关
• - 数字电位计
• - 接口
• - EMI和RFI滤波器

• - EEPROM存储器
• - 非易失性只读存储器(NVRAM)
• - SRAM存储器

Description

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.

Features

• Wide-Input Voltage Range from 4.5 V to 60 V
• 600-mV Reference Voltage with 1% Accuracy
• Programmable UVLO and Hysteresis
• Voltage Mode Control With Voltage Feed Forward
• Programmable Frequency Between 100 kHz and 600 kHz
• Bi-directional -Frequency Synchronization With Master/Slave Option
• Low-side FET Sensing Overcurrent Protection and High-Side FET Sensing Short-circuit Protection With Integrated Thermal Compensation
• Programmable Closed Loop Soft-Start
• Supports Pre-Biased Outputs
• Thermal Shutdown at 165°C with Hysteresis
• Voltage Tracking
• Power Good
• ENABLE. 1-µA Low Current Shutdown
• 8.0-V and 3.3-V LDO Output
• Integrated Bootstrap Diode
• 20-Pin 3.5 mm × 4.5 mm QFN (RGY) Package
• APPLICATIONS
  • POL Modules
  • Wide Input Voltage, High-Power Density DC/DC Converters for Industrial, Networking and Telecomm Equipment