|
Maxim公司的dsPIC33FJ系列16位數(shù)字信號控制器(DSC),CPU工作高達40MIPS,支持多回路數(shù)字開關(guān)電源和其它數(shù)字功率轉(zhuǎn)換應(yīng)用如AC/DC轉(zhuǎn)換器,PFC,UPS,逆變器,嵌入電源控制器,斷路器等.本文介紹了dsPIC33FJ系列主要特性以及采用dsPIC33FJ系列的LED HBLED照明開發(fā)套件主要特性,方框圖,電路圖,材料清單和PCB布局圖. dsPIC33FJXXGSXXX SMPS & Digital Power Conversion 16-bit Digital Signal Controller. These devices offer features supporting common, multi-loop digital switch-mode power supplies (SMPS) and other digital power-conversion applications such as: • AC to DC Converters • DC to DC Converters • Power Factor Correction (PFC) • Uninterruptible power supply (UPS) • Inverters • Embedded Power-Supply Controllers • Circuit Breakers, Arc Fault Detection dsPIC33FJ系列主要特性: CPU Up to 40 MIPS Operation (at 3.0-3.6V) 16 x 16 Fractional/Integer Hardware Multiply, Single Cycle Execution Single-Cycle Multiply and Accumulate 32-bit by 16-bit Hardware Divider C Compiler Optimized Instruction Set System Internal oscillator and Phase-Locked Loop (PLL) with 120 MHz VCO On-chip LDO Voltage Regulator JTAG Boundary Scan and Flash Memory Program Support Fail-Safe Clock Monitor – allows safe shutdown if clock fails Watchdog Timer with separate RC oscillator Power Managed Modes Run, Idle and Sleep modes Multiple, Switchable Clock Modes for Optimum Performance and Power Management High-Speed PWM Module Features Up to Four PWM Generators with Four to Eight Outputs Dead Time for Rising and Falling Edges Duty Cycle Resolution of 1.04 ns for Dead-Time, Phase Shift, and Frequency Supported PWM modes: Standard Edge-Aligned, True Independent Output, Complementary, Center-Aligned, Push-Pull, Multi-Phase, Variable Phase, Fixed Off-Time, Current Reset, and Current-Limit PWMxL, PWMxH Output Pin Swapping PWM4H, PWM4L Pins Remappable On-the-Fly PWM Frequency, Duty Cycle and Phase Shift Changes High-Speed Analog Comparator Up to Four Analog Comparators 20 ns response time 10-bit DAC for each analog comparator DACOUT pin to provide DAC output High-Speed 10-Bit ADC 10-Bit Resolution Up to 12 Input Channels Grouped into Six Conversion Pairs 4 Msps or 2 Msps Conversion rate Independent Trigger Source Section for each Analog Input Conversion Pair Peripherals UART Module with LIN and IrDA® support SPI Module with FIFO I2C™ Modules with Master and Slave Modes Up to 3 16-bit Timer Modules Up to 2 Input Capture and 2 Output Compare / PWM Microchips “GS” series of dsPIC Digital Signal Controllers (DSCs) in controlling multiple High Brightness (HB) LEDs. The development kit uses separate daughter cards for both buck and boost applications. The LED Lighting Development Kit contains the following items: • LED Lighting Development Kit Base Board • Buck Daughter Card • Boost Daughter Card • Light Diffuser • Information Sheet 
圖1.LED照明基板外形圖 LED照明基板主要元件:
圖2. LED照明開發(fā)套件降壓子板外形圖
圖3. LED照明開發(fā)套件升壓子板外形圖
圖4. LED照明開發(fā)套件和降壓子板方框圖
圖5. LED照明開發(fā)套件和升壓子板方框圖
圖6. 基板接口電路圖
圖7. 基板電源電路圖
圖8. 基板DMX和模擬開關(guān)電路圖
圖9. 降壓子板電路圖
圖10. 升壓板接口電路圖
圖11. LED照明基板PCB布局圖 LED照明開發(fā)套件材料費清單:
詳情請見: 
80439K[1].pdf
(373.56 KB)
39962b[1].pdf
(2.97 MB)
51894a[1].pdf
(582.74 KB)
HBLED_071210.zip
(19.53 MB)
LED_Lighting_DMX.zip
(2.44 MB)
|
