[原创] Microchip MIC33M356 3A功率模块降压转换器解决方案

Microchip公司的MIC33M356是具有HyperLight Load®模式和I2C接口的 3A功率模块降压转换器.具有I2C可编程高效低压输入,3A电流同步降压并集成了电感的稳压功率模块.恒定开态时间(COT)控制架构具有HyperLight Load®模式在轻负载时具有非常高的效率,同时还依然具有超块的瞬态响应.I2C接口允许可编输出电压从0.6V到1.28V,5mV分辨率或0.6V到3.84V,分辨率10 mV和20mV.器件还提供;两个默认电压(0.9V和1.0V)选择.输入电压为2.4V到5.5V,输出电流3A,转换速率从0.2 ms/V 到 3.2 ms/V,高边限流3.5A或5A.线路/负载/温度范围的输出电压精度±1.5%,具有预偏压输出的安全起动,关断时电流典型为1.5 μA.低压降(100%)占空比运作,I2C速度高达3.4MHz.满足规范CISPR32 Class B Emissions,主要用在固态设备(SSD),平板电脑,笔记本电脑和超级本电脑,FPGA,DSP和低压ASIC电源.本文介绍了MIC33M356主要特性,框图,典型应用电路图和MIC33M356评估板ADM00855主要特性,测试建立图,电路图,材料清单和PCB设计图.

The Microchip MIC33M356 is a I2C programmable,high-efficiency, low-voltage input, 3A current, synchronousstep-down regulator power module withintegrated inductor. The Constant On-Time (COT)control architecture with HyperLight Load® modeprovides very high efficiency at light loads, while stillhaving ultra-fast transient response.

The I2C interface allows programming the output voltagebetween 0.6V and 1.28V, with 5 mV resolution orbetween 0.6V and 3.84V, with 10 mV and 20 mV resolution.
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