TPS40170是TI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,本页介绍了TPS40170的产品说明、应用、特性等,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 - TI公司(Texas Instruments,德州仪器)
- 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
- POL Modules
- Wide Input Voltage, High-Power Density DC - DC Converters for Industrial, Networking and Telecom Equipment
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.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS40170 | VQFN (20) | 3.50 mm × 4.50 mm |