Microchip’s new dsPIC33FJ09GS302 family of digital signal controllers (DSCs) is designed to enhance efficiency in AC-DC and DC-DC power supplies, HID and LED lighting, solar inverters and other power-conversion applications.
The five-member product family is 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.
Other key features of this family include on-chip analog comparators with programmable hysteresis and rail-to-rail operation, and an on-chip PMBus address selection current source to reduce external components.
These new DSCs 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 5 x 5 mm footprint.
The new MPLAB Starter Kit for Digital Power allows customers to explore digital power conversion using the dsPIC33 ‘GS’ architecture in popular digital power conversion topologies. The kit includes a buck converter and a boost converter with onboard programmable loads for each, together with an LCD display for voltage, current, temperature and fault conditions.
An onboard debugger/programmer with a USB interface is also included. Microchip has a wide range of reference designs, demonstrating various digital power conversion applications and topologies, such as the recently introduced ‘Platinum-rated 720 W AC-DC’ and the ‘Enhanced Solar Micro-inverter’ reference designs.
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