Microchip dsPIC33 Explorer 16数字电源开发方案
Microchip公司的dsPIC33FJxxGSxx系列是高性能16位数字信号控制器,包括有扩展的DSP功能和高性能16位微控制器(MCU)架构.工作电压3.0-3.6V时的性能高达40MIPS,主要用于AC/DC转换器,汽车电子HID,电池充电器,DC/DC转换器,数字照明,电磁炉,LED镇流器,可再生能源以及UPS等.本文介绍dsPIC33FJxxGSxx系列主要特性,方框图, 多种转换构成框图以及Explorer 16数字电源开发板电路图.
dsPIC33主要特性:
Operating Range:
• Up to 40 MIPS operation (at 3.0-3.6V):
- Industrial temperature range (-40℃ to +85℃)
- Extended temperature range (-40℃ to +125℃)
High-Performance DSC CPU:
• Modified Harvard architecture
• C compiler optimized instruction set
• 16-bit wide data path
• 24-bit wide instructions
• Linear program memory addressing up to 4M instruction words
• Linear data memory addressing up to 64 Kbytes
• 83 base instructions: mostly 1 word/1 cycle
• Two 40-bit accumulators with rounding and saturation options
• Flexible and powerful addressing modes:
- Indirect
- Modulo
- Bit-Reversed
• Software stack
• 16 x 16 fractional/integer multiply operations
• 32/16 and 16/16 divide operations
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