TPS54340 参考设计电路|降压DC-DC转换器应用电路

TPS54340是42V输入3.5A降压DC/DC转换器，它带有一个集成的高边MOSFET。此篇主要介绍了TPS54340特性、应用范围、参考设计电路以及电路分析，帮助大家缩短设计时间。

TPS54340特性：集成高边MOSFET；有脉冲跳跃Eco模式；100kHz到2.5MHz的固定或可调节开关频率；内部软启动

TPS54340典型应用范围：12V、24V和48V工业、汽车和通信电源系统

TPS54340参考设计应用电路：

图1TPS54340内部结构图

TheTPS54340 is a 42 V, 3.5 A, step down regulator with an integrated high side MOSFET. The device survives load dump pulses up to 45 V per ISO 7637.Current mode control provides simple external compensation and flexible component selection.

图2TPS54340参考设计图

TheTPS54340 is a 42 V, 3.5 A, step-down (buck) regulator with an integrated high side n-channel MOSFET.The device implements constant frequency, current mode control which reduces output capacitance and simplifies external frequency compensation.

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