TPSM843820中文资料具有 4V 至 18V 输入和高级电流模式的 8A 同步 SWIFT™ 降压电源模块数据手册TI规格书

描述 Description

TPSM843820 是一款高效、小巧、灵活且易用的同步直流/直流降压转换器，采用 MicroSiP 电源模块封装。该模块的输入电压高达 18V，具有可由系统设计人员通过电阻器调节的固定频率。嵌入式 IC 会进行内部补偿，从而减少外部元件和并减小设计尺寸。集成式高频电容器可降低开关节点的瞬态峰值。

TPSM843820 模块采用内部补偿、固定频率高级电流模式控制。该器件能够在以高达 2.2MHz 的开关频率运行时提供高效率。固定频率控制器可以在 500kHz 至 2.2MHz 范围内运行，并且可以通过 SYNC 引脚与外部时钟同步。其他功能包括高精度电压基准、可选的软启动时间、单调启动至预偏置输出、可选的电流限制、可调 UVLO（通过 EN 引脚实现）以及全套故障保护。

特性 Features

• Fixed-frequency, internally-compensated advanced current mode (ACM) control
• Small form factor 3.5-mm × 3.5-mm × 1.6-mm, 15-pin DFM package MicroSiP power module
• High-efficiency, integrated 25-mΩ and 6.5-mΩ MOSFETs, inductor and basic passives
• 4-V to 18-V input voltage range
• 0.5-V to 1.8 -V output voltage range
• Three selectable PWM ramp options to optimize the control loop performance
• Five selectable switching frequencies: 500 kHz, 750 kHz, 1 MHz, 1.5 MHz, and 2.2 MHz
• Synchronizable to an external clock
• 0.5-V, ±0.5% voltage reference accuracy over full temperature range
• Selectable soft-start times: 0.5 ms, 1 ms, 2 ms, and 4 ms
• Monotonic start-up into pre-biased outputs
• Selectable current limits to support 6-A and 3-A operation
• Enable with adjustable input undervoltage lockout
• Power-good output monitor
• Output overvoltage, output undervoltage, input undervoltage, overcurrent, and overtemperature protection
• Pin-to-pin compatible with 3 A - TPSM843320 6 A - TPSM843620
• –40°C to 125°C operating junction temperature