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DSCs give power conversion apps digital control

Posted: 10 Oct 2012     Print Version  Bookmark and Share

Keywords:digital signal controller  DSC  power conversion 

Microchip Technology Inc. introduces the dsPIC33FJ09GS302 family of digital signal controllers (DSCs) designed for digital-power conversion in AC/DC and DC/DC power supplies, HID & LED lighting, solar inverters, and other power conversion applications.

The five new DSCs are said to be optimised for digital-power applications via integrated high-speed ADCs, a zero-wait-state signal processing core, and flexible high-resolution PWMs. These peripherals are integrated for streamlined interoperation, enabling sub-microsecond digital control loops. The devices also feature on-chip analogue comparators with programmable hysteresis and rail-to-rail operation, and an on-chip PMBus address selection current source to reduce external components. They claim to offer the lowest power dissipation of any of the GS family members, and are the first available in a 20-pin SSOP package and the even smaller 36-pin VTLA package, which has a 5mm x 5mm footprint.

The DSCs are the dsPIC33FJ06GS001 and dsPIC33FJ06GS101A which are offered in 18-pin SPDIP and SOIC, as well as 20-Pin SSOP packages. And the dsPIC33FJ06GS102A, dsPIC33FJ06GS202A and dsPIC33FJ09GS302 are offered in 28-pin SOIC, SSOP, SPDIP and QFN, as well as 36-pin VTLA packages.

Microchip also announces the MPLAB Starter Kit for Digital Power that lets customers explore digital power conversion using Microchip's dsPIC33 "GS" architecture in popular digital power-conversion topologies. The Kit includes a buck converter and a boost converter with on-board programmable loads for each, along with an LCD display for voltage, current, temperature and fault conditions. An on-board debugger/programmer with a USB interface is included. Microchip also has a wide range of reference designs, demonstrating various digital power- conversion applications and topologies, such as the recently introduced Platinum-rated 720W AC-DC and the Enhanced Solar Microinverter reference designs. Microchip's full suite of standard development tools supports the dsPIC33FJ09GS302 family, including the MPLAB Integrated Development Environment.

All five members of the dsPIC33FJ09GS302 family are available for sampling and volume production in 10,000-unit quantities.

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