Microchip MCP19117带MCU数字电源PWM控制方案
Microchip公司的MCP19117是具有改进性MCU的数字增强电源模拟同步低边PWM控制器,其标准的PIC MCU相当于PIC12F617,工作电压从4.5V到42V,适用于LED照明系统,电池充电器和其它低边PWM应用.本文介绍了MCP19117主要特性和MCU特性,功能框图和应用框图,以及可单独使用的MCP19117反激评估板主要特性,电路图,材料清单和PCB设计图.
The MCP19116/7 devices are highly integrated,mixed-signal low-side synchronous controllers thatoperate from +4.5V to +42V. The family features ananalog PWM controller with an integratedmicrocontroller core used for LED lighting systems,battery chargers and other low-side switch PWMapplications. The MCP19116/7 devices are derivedfrom the MCP19114/5 which share the same featuresand characteristics except for the addition of largerprogram memory (8k words vs 4k words) and severaldesign enhancements. These enhancements wereadded to the MCP19116/7 devices to improve
calibration, increase accuracy and provide greaterflexibility. The devices feature an analog internal PWMcontroller similar to the MCP1631, and a standard PIC®microcontroller similar to the PIC12F617.
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