Product category:
Microprocessors, Microcontrollers and DSPs
News Release from: Microchip Technology | Subject: DsPIC30F1010 and dsPIC30F2020/2023
Edited by the Electronicstalk Editorial
Team on 29 June 2006
Digital signal controllers take on power
duties
16bit dsPIC digital signal controllers are designed for common, multi-loop switch-mode power supplies and other power-conversion applications.
Microchip Technology has released a family of 16bit dsPIC digital signal controllers (DSCs) for common, multi-loop switch-mode power supplies (SMPSs) and other power-conversion applications The dsPIC30F1010 and dsPIC30F2020/2023 (dsPIC30F202X) DSCs have a high-speed 1ns resolution pulsewidth modulator (PWM) and 2Msample/s, 10bit analogue-to-digital (A/D) convertor onboard for low latency and high- resolution control
This article was originally published on Electronicstalk on 4 Jul 2006 at 8.00am (UK)
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However, until now, lack of effective solutions has hampered the development of supplies using digital control of the complete power-conversion loop.
The dsPIC30F1010 and dsPIC30F202X DSCs free designers to implement this type of complete digital control of their products.
"Power-supplies with higher power or complexity are now poised at a price threshold that is amenable to digital control", said Sumit Mitra, Vice President of Microchip's Digital Signal Controller Division.
"Our SMPS dsPIC families were developed with input from leading power-supply manufacturers to tip the scale in favour of a digital approach".
"These devices accelerate innovation by giving early adopters newfound flexibility to create new topologies that were formerly impractical for analogue approaches".
"Early adopters expect to achieve superior levels of customisation, resulting in power supplies that are more competitive in their markets".
The new DSCs enable full control of the power-conversion process via software running on the DSC and through its high-performance integrated peripherals.
Designers are no longer limited by analogue control design techniques.
Components no longer need to be "oversized" to account for component variation.
There is no need to worry about component drift and temperature compensation.
Manual tuning at the end of the manufacturing line will be a thing of the past.
Fewer product platforms are required to serve a wider range of applications, as they are differentiated through software, rather than hardware.
Additionally, new, digital topologies will provide designers with a higher degree of freedom to develop supplies with improved power density and improved cost effectiveness.
Examples of applications that can immediately see cost and performance benefits from the SMPS dsPIC DSCs include power supplies with multiple outputs, co-ordinated load sharing, hot-swap capability, output co-ordination, integrated power factor correction or extensive fault-handling.
The PWM onboard the dsPIC30F1010 and dsPIC30F202X devices offers 1ns duty cycle resolution and seven modes of operation, including standard, complementary, push-pull and variable-phase.
The 10bit A/D convertor has up to 12 input channels and samples at up to 2Msample/s.
Advanced sampling capabilities include individual triggers for each of four sample and holds, and precise, uniquely timed or simultaneous sampling.
The dsPIC30F1010 devices have 6Kbyte of Flash and two PWM generators, and the dsPIC30F202X have 12Kbyte of Flash and four PWM generators.
All devices in this family operate between 3.0 and 5.5V.
Application examples include AC/DC power supplies, power factor correction (PFC), isolated DC/DC convertors, UPSs and power inverters.
A host of other applications can benefit from the ultra-fast PWM and A/D onboard the dsPIC30F1010 and dsPIC30F202X devices, such as digital lighting and liquid crystal display (LCD) backlights.
The dsPIC30F1010 and dsPIC30F202X DSCs are supported by the MPLAB Integrated Development Environment (IDE), MPLAB C30 C Compiler, MPLAB SIM 30 Software Simulator, MPLAB ICD 2 In-Circuit Debugger and MPLAB Visual Device Initialiser.
Additionally, Microchip expects to offer the dsPICDEM SMPS buck development board (DM300023) which was designed to support development using the dsPIC30F1010 and dsPIC30F202X devices.
The board is available for early adopter sampling today.
Microchip has also introduced a new online Intelligent Power Supply Design centre.
The dsPIC30F1010 is available in 28-pin SOIC, SPDIP and QFN packages, the dsPIC30F2020 in 28-pin SOIC, SPDIP and QFN packages and the dsPIC30F2023 in 44-pin TQFP and QFN packages.
These DSCs start at $2.99 each in 10,000-unit quantities.
Selected devices are available today for early adopter sampling.
General sampling is expected in July, and volume production is expected in August.
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