TPS54388-Q1中文资料汽车类 2.95V 至 6V 输入、3A、2MHz 同步降压 SWIFT™ DCDC 转换器数据手册TI规格书

描述 Description

The TPS54388-Q1 device is a full-featured 6-V, 3-A, synchronous step-down current-mode converter with two integrated MOSFETs.
The TPS54388-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 TPS54388-Q1 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (Vref) over temperature.
The integrated 12-mΩ MOSFETs and 515-µA typical supply current maximize efficiency. Entering shutdown mode using the enable pin reduces shutdown supply current to 5.5 µA, typical.
The internal undervoltage lockout setting is at 2.45 V, but programming the threshold with a resistor network on the enable pin can increase the setting. The slow-start pin sets the output-voltage start-up ramp. An open-drain power-good signal indicates when 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

• 符合面向汽车应用的 AEC-Q100 标准：
• 温度等级 1：–40°C 至 +125°C，TA

• 两个可在 3A 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
• 与外部时钟同步
• 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 TPS54388-Q1 并借助 WEBENCH® 电源设计器创建定制设计方案