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DSCs pack PWMs, ADCs, analog comparators

Posted: 25 Mar 2010 ?? ?Print Version ?Bookmark and Share

Keywords:digital signal controller? DSC? PWM? analog comparator?

dsPIC33F digital signal controllers

Microchip Technology Inc. has extended its 16bit dsPIC digital signal controller (DSC) portfolio for digital power-conversion applications. The new DSCs provide up to 4x the memory, compared to the company's existing SMPS and Digital Power Conversion families.

The flexible DSCs can be configured for a variety of topologies, giving power-supply designers the complete freedom to optimize for specific product applications. The eight new DSCs offer up to 18 channels of pulse-width modulators (PWMs) with 1ns resolution, enabling high number of completely independent digital control loops.

Implementing high-speed, precision digital control loops for digital power conversion applications requires a high-performance DSP engine, along with specialized digital power peripherals. Microchip's 16bit dsPIC33F GS series DSCs provide on-chip peripherals specifically designed for high-performance, digital power supplies. On-chip digital power peripherals include high-speed PWMs, ADCs and analog comparators. The newly expanded dsPIC33F GS family supports applications such as induction cooking, uninterruptable power supplies, solar and pure sine-wave inverters, intelligent battery chargers, power factor correction, HID lighting, fluorescent lighting, LED lighting, and AC/DC and DC/DC power converters.

"Microchip further extends its industry leadership with this family of digital-power DSCs," said Sumit Mitra, VP of Microchip's high performance microcontroller division. "These new devices enable a broader set of digital-power applications that require more communication and control of more complex systems."

The eight new dsPIC33F GS series digital-power DSCs enable digital control loops with 12 to 18 high-speed, 1ns resolution PWMs and one or two 10bit, on-chip ADCs, providing 2 to 4 million samples per second for low latency and high-resolution control. They range from 64 to 100 pins and 32- to 64Kbyte flash memory. These DSCs feature interactive peripherals that both minimize the intervention of the processor and are able to handle the real-time needs of high-speed current-mode control.

The dsPIC33F GS series DSCs are supported by the MPLAB Integrated Development Environment, MPLAB C Compiler for dsPIC DSCs, MPLAB SIM 30 Software Simulator, MPLAB ICD 3 In-Circuit Debugger and MPLAB REAL ICE In-Circuit Emulation System.

For advanced development, Microchip's Explorer 16 Development Board (part # DM240001, $129.99) can be used with the Buck/Boost Converter PICtail Plus Daughter Board (part # AC164133, $ 89.99). A new dsPIC33F GS series Plug-in Module (part # MA330024, $25) is available today for the Explorer 16, which enables development with this new DSC family; specifically, the 100-pin dsPIC33FJ64GS610.

These eight new DSCs start at $2.93 each in 10,000-unit quantities. The dsPIC33FJ32GS406, dsPIC33FJ64GS406, dsPIC33FJ32GS606 and dsPIC33FJ64GS606 are available in 64-pin TQFP and 9x9 mm QFN packages. The dsPIC33FJ32GS608 and dsPIC33FJ64GS608 are available in an 80-pin TQFP package. The dsPIC33FJ32GS610 and dsPIC33FJ64GS610 are available in a 100-pin TQFP package.

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