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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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PIC12F609 Arkusz danych(PDF) 13 Page - Microchip Technology |
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PIC12F609 Arkusz danych(HTML) 13 Page - Microchip Technology |
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13 / 20 page  www.microchip.com/lighting LED Lighting Solutions Design Guide 13 LED Lighting Solutions High Performance Digital Control Devices in the PIC18F, PIC24 and dsPIC33F families offer 8-bit and 16-bit solutions for fast calculation of digital control loops. In addition, these families have device variants with fast ADC peripherals and specialized PWM modules that are optimized for power control applications. A selection of devices for digital power control is shown in the table below. There are many other Microchip devices that could be used, but these devices represent low-cost and small package choices. Devices in the PIC18F family have an 8-bit CPU with a hardware multiplier. The PIC18 is a good choice for moderate control loop rates (1-10 KHz). Devices in the dsPIC33F family have a 16-bit CPU with DSP resources. This family is a good choice if you need to execute multiple control loops at a faster rate. Devices in the PIC24 family offer an intermediate solution with 16-bit calculation performance. The dsPIC33FJ06GS202 device has a Power Supply PWM module that can generate high switching frequencies with very fine edge resolution. This PWM module can also generate phase shifted PWM signals for advanced power supply applications. The 28-pin dsPIC33FJ06GS202 device can provide a highly integrated solution for LED lighting applications. The PWM peripheral can drive 3 strings of LEDs, replacing 3 separate analog control ICs. Furthermore, there are resources left over for active power factor correction (PFC) and digital communications . LED Lighting Development Kit Reference Design The LED Lighting Development Kit demonstrates the capabilities of Microchips “GS” series of dsPIC Digital Signal Controllers (DSC) in High Brightness (HB) LED applications. More information is available at: www.microchip.com/LED. Web Links www.microchip.com/smps www.microchip.com/pic24 www.microchip.com/pic18 Multiple LED Driver Application with PFC VAC lPFC VBUS I1 I2 I3 Drive 2 Drive 3 Drive 1 I1 I2 I3 LED Drive 1 LED Drive 2 LED Drive 3 VBUS PFC PFC Drive VAC 120 VAC PFC Drive dsPIC33FJ06GS202 MCP1416 Serial Comm. GPIO 40 MIPS DSP 10-bit ADC Output Compare PWM3 PWM1 PWM2 PWM4 Selected Devices for Digital Power Control Device Pins Architecture ADC PWM PIC18F23K22 28 8-bit MCU 10-bit, 100 KSPS 3 Enhanced, 2 Standard PIC24FJ16GA002 28 16-bit MCU 10-bit, 500 KSPS 5 Standard dsPIC33FJ06GS202 28 16-bit DSC 10-bit, 2 MSPS 4 Power Supply |
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