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[原创]Maxim MAX20403 36V 2.5A(3.5A)全集成同步降压转换器解决方案

关键词:电源管理 DC/DC转换器 Maxim MAX20403

时间:2022-08-12 14:29:56       来源:中电网

Maxim公司的MAX20402/MAX20403是 36V 2.5A/3.5A集成了高边和低边开关的全集成同步降压转换器. MAX20402/MAX20403在3V到36V输入电压范围内提供高达2.5A/3.5A电流.电压质量能通过观察PGOOD信号进行监视.器件能运行在99%占空比,使得器件非常适合于汽车和工业应用.器件提供外部可编程或内部固定输出电压5V和3.3V.固定内部频率可选择3MHz/2.1MHz/400kHz,允许小型外接元件和降低成输出波纹,保证没有AM干扰.在FPWM输出电压精度±1.5%,平均电流模式,强迫PWM和跳转操作,器件具有超温,过压和短路保护, 3mm x 3mm FC2QFN封装,工作温度-40°C 到 +125°C.AEC-Q100资质.主要用在案汽车ADAS系统,雷达模块,远程信息系统以及工业应用,高压DC/DC转换器.本文介绍了MAX20402/MAX20403主要优势和特性, 简化框图和多种频率连接图,以及评估版MAX20403 EVK主要优势和特性,电路图,材料清单和PCB设计图.

 

 The MAX20402/MAX20403 IC are tiny synchronous buck converters with integrated high-side and low-side switches. The MAX20402/MAX20403 deliver up to 2.5A/3.5A over a wide 3V to 36V input voltage range. Voltage quality can be monitored by observing the PGOOD signal. These ICs can operate in dropout by running at 99% duty cycle, making them ideal for automotive and industrial applications.

The MAX20402/MAX20403 offer externally programmable or internally fixed output voltages of 5V and 3.3V. Fixed internal frequency options of 3MHz/2.1MHz/400kHz are available, which allow for small external components and reduced output ripple, and also guarantee no AM interference.

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