TPS57114-Q1中文资料汽车类 2.95V 至 6V 输入、4A、2MHz 同步降压 SWIFT(tm) DCDC 转换器数据手册TI规格书

描述 Description

The TPS57114-Q1 device is a full-featured 6-V, 4-A, synchronous step-down current-mode converter with two integrated MOSFETs.
The TPS57114-Q1 device enables small designs by integrating the MOSFETs, implementing current-mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the IC footprint with a small 3-mm × 3-mm thermally enhanced QFN package.
The TPS57114-Q1 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (Vref) over temperature.
Efficiency is maximized through the integrated 12-mΩ MOSFETs and 515-µA typical supply current. Using the enable pin, shutdown supply current is reduced to 5.5 µA by entering a shutdown mode.
The internal undervoltage lockout setting is 2.45 V, but programming the threshold with a resistor network on the enable pin can increase the setting. The slow-start pin controls the output-voltage start-up ramp. An open-drain power-good signal indicates the output is within 93% to 107% of its nominal voltage.
Frequency foldback and thermal shutdown protect the device during an overcurrent condition.

特性 Features

• 符合汽车应用 应用
• 具有符合 AEC-Q100 标准的下列结果：
• 器件温度 1 级：-40℃ 至 +125℃ 的环境运行温度范围
• 器件 HBM ESD 分类等级 2
• 器件 CDM ESD 分类等级 C4B
• 两个可在 4A 负载下获得高效率的 12mΩ（典型值）MOSFET
• 200kHz 至 2MHz 开关频率
• 在工作温度范围（–40°C 至 +150°C）内具有 0.8V ± 1% 电压基准
• 同步至外部时钟
• 可调缓启动和排序
• 欠压 (UV) 和过压 (OV) 电源良好输出
• –40°C 至 +150°C 工作结温范围
• 热增强型 3mm × 3mm 16 引脚 WQFN 封装
• 与 TPS54418 引脚兼容
• 使用 TPS57114-Q1 并借助 WEBENCH® 电源设计器创建定制设计