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dsPIC33 Digital Signal Controllers (DSC)
Digital signal controllers provide fast and flexible platform for lighting power supply designs.
Microchip’s dsPIC33 Digital Signal Controller (DSC) family provides an ideal combination of high Digital Signal Processor (DSP) performance and a microcontroller-like peripheral set for use in efficient power supplies for lighting equipment.
Offering DSP throughput of up to 100 MIPS, the Microchip dsPIC33 family’s fast, deterministic performance gives rapid response to changes in operating conditions.
The high-performance dsPIC33 DSCs feature a DSP engine for the high-speed execution of the control loop in demanding power-conversion applications. The Digital Signal Controllers offer features such as:
- Dual, independent cores, to enable the system to isolate time-critical control loops from housekeeping functions
- High-speed ADCs, programmable gain amplifiers and a CPU with fast and predictable interrupts
- PWM controllers operating at a resolution of up to 250ps, giving the flexibility to control numerous power topologies
In LED lighting equipment, algorithms running on the dsPIC33 controller can control the brightness and even adjust the color temperature of the light that is emitted from an LED. Other advanced capabilities include compensating for factors such as operating temperature changes, component aging and unit to unit variations to produce superior light quality and a consistently good customer experience. For high reliability systems, the dsPIC33 can detect and report failing LEDs.
Microchip supplies LED demo code for the dsPIC33CK Curiosity Development Board referenced below. In addition to controlling the current into an LED, a dsPIC33 can also control an AC/DC power supply or a DC/DC converter for the power to system.
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Explore the Features of the dsPIC33CK Family
The dsPIC33CK Curiosity Development Board is a cost-effective development and demonstration platform for the dsPIC33CK family of single-core high performance digital signal controllers.
Designed to take full advantage of Microchip’s MPLAB® X IDE, the board includes an integrated programmer/debugger and requires no additional hardware, making it a perfect starting point to explore the dsPIC33CK family.
This board includes a Red/Green/Blue (RGB) LED, two general purpose green LEDs and is be powered through the USB port. Code examples are available for color mixing and color sequencing.
The board has 3 push buttons and a potentiometer for user input and can be expanded using the onboard mikroBUS™ interfaces.
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