TPS40170 - 4.5V 至 60V 宽输入同步 PWM 降压控制器

TPS40170是TI德州仪器公司的一款控制器（外部开关）产品，TPS40170是4.5V 至 60V 宽输入同步 PWM 降压控制器，本站介绍了TPS40170的封装应用图解、特点和优点、功能等，并给出了与TPS40170相关的TI元器件型号供参考。

TPS40170 - 4.5V 至 60V 宽输入同步 PWM 降压控制器 - 控制器（外部开关） - DC/DC开关稳压器 - 德州仪器

产品特性

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
Powergood
ENABLE with 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 VQFN (RGY) Package

产品应用

POL Modules
Wide Input Voltage, High-Power Density DC - DC Converters for Industrial, Networking and Telecom Equipment

Simplified Application

产品说明

TPS40170 is a full-featured, synchronous PWM buck controller that operates at an input voltage between 4.5 V and 60V 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 undervoltage lockout (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. The controller supports pre-biased output, provides an open-drain PGOOD signal, and has closed-loop soft-start, output voltage tracking and adaptive dead-time control.

TPS40170 provides accurate output voltage regulation through 1% ensured accuracy. Additionally, the controller implements a novel scheme of bi-directional synchronization with one controller acting as the master and other downstream controllers acting as slaves synchronized to the master in-phase or 180° out-of-phase. Slave controllers can be synchronized to an external clock within ±30% of the free-running switching frequency.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS40170	VQFN (20)	3.50 mm × 4.50 mm

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