Maxim MAX25432汽车100W USB供电(USB PD)端口控制和保护方案

Maxim公司的MAX25432是汽车级的降压-升压控制器,在高达6.35A电流时能全范围3.3V到21V可编程电源(PPS),还包括USB供电(USB PD)模拟前端(AFE),支持先前的USB充电,以及用于汽车USB主或下游面临(DFP)应用的USB Typs-C保护开关. USB Type-C保护开关提供汽车系统级ESD保护和用于D+, D-, CC1, CC2和VCONN的 24V短路保护.器件可选择支持先前的充电模式,以用较早期的手机包括BC1.2, Apple® Charge, Apple CarPlay®, Apple MFi,和USB On-The-Go (OTG).MAX25432B集成了USB PD AFE,支持USB-IF Type-C端口控制器接口(TCPCI)指标,能和应用中的任何I2C主进行接口. MAX25432A为外接USB PD控制器提供可配置通路(CC)信号直通保护.器件的输入工作电压为4.5V到36V,开关频率为220kHz, 300kHz和400kHz.器件满足AEC-Q100和 AEC-Q006汽车规范.工作温度-40°C 到 +125°C,带EP的40引脚6x6mm TQFN封装.主要用在USB集线器,多媒体集线器和分接盒,专用的充电模块,后座娱乐模块以及加热单元,无线电和导航.本文介绍了MAX25432主要优势和特性,简化框图和功能框图,以及降压-升压框图, USB Type-C功能框图, MAX25432A和MAX25432B应用框图以及评估板MAX25432 EVK主要特性,建立图和电路图,材料清单和PCB设计图.和MAX32630FTHR电路图和PCB设计图,Maxim USB-C分接板电路图和PCB设计图.

The MAX25432 combines an automotive-grade buck-boost controller capable of full-range 3.3V to 21V programmable power supply (PPS) at up to 6.35A, a USB Power Delivery (USB PD) analog front-end (AFE), legacy USB charging support, and USB Type-C® protection switches for automotive USB host or downstream-facing (DFP) applications. The USB Type-C protection switches provide automotive system-level ESD protection and 24V short-circuit protection for D+, D-, CC1, CC2, and VCONN. The device can optionally support legacy charging modes for older passenger phones including BC1.2, Apple® Charge, Apple CarPlay®, Apple MFi, and USB On-The-Go (OTG).

The MAX25432B integrates a USB PD AFE, which supports the USB-IF Type-C Port Controller Interface (TCPCI) specification and can interface with any I2C master in the application. The MAX25432A provides configuration channel (CC) signal pass...