By using digital loop control to implement power conversion products, you can realize many benefits for your design and business, including the ability to perform the power conversion control via reprogrammable software with the performance and features of the Microchip Digital Signal Controller (DSC) solutions.

Benefits of the dsPIC® DSC for SMPS and Digital Power Conversion Devices

The benefits of the dsPIC DSCs for Switch Mode Power Supplies (SMPS) and digital power conversion applications are many. The dsPIC30F1010 and dsPIC30F2020/2023 DSCs are self-contained SMPS solutions that do not require much in the way of external support chips, since they have the necessary peripherals to do the job. As opposed to other solutions, Microchip’s SMPS and digital power conversion devices have the following features, and therefore require fewer external components:

• Internal power supply PWM
• Internal ADC
• Internal precision oscillator
• Internal communication peripherals
• Single supply voltage
• Internal Flash and RAM
• Small size
• Extended temperature
• No separate chip for power factor correction

When using the dsPIC DSC for SMPS and digital power conversion applications, developers can obtain a 50% reduction in component count over other solutions.

FEATURES Increased power density Reduce system size via component count and size reduction Smaller magnetics via advanced switching techniques Lower cost, improved time to market and ease of manufacturing Feature rich designs with fewer components Fewer hardware platforms support varied end products through software New cost effective features Dynamically adapt to changing load Better transient response specifications – not limited to linear techniques Managed voltage transitions eliminate “over-specified” components Improved reliability Supplies can be restricted from operating out of specification Fewer components help reliability Protect intellectual property Key innovative IP implemented in secured Flash software

APPLICATIONS AC-to-DC converters DC-to-DC converters Power Factor Correction (PFC) Uninterruptible Power Supply (UPS) Inverters Embedded power supply controllers Circuit breakers, arc fault detection Digital lighting

Controlling Your Power

dsPICDEM SMPS Buck Development Board

This development board provides an easy and economical way to evaluate the dsPIC30F202x/1010 SMPS and Digital Power Conversion family of components and provides an educational and prototyping platform to investigate digital power conversion and digital Switch Mode Power Supply (SMPS) design. The board includes a socketed dsPIC30F2020 device connected to power devices and circuitry for controlling dual independent low power DC-to-DC Synchronous Buck Converter circuits as well as support, debug and communication circuitry.

DM300023 Buck Development Board

Board Includes

• Socketed dsPIC30F2020 on board connected to power devices and circuitry for controlling dual independent low power DC-to-DC synchronous buck converter circuits
• Buck converters can operate in synchronous or asynchronous modes
• Input voltage range 7V to 15V (nominal 9V)
• User can enable a dynamic output load to investigate transient response
• User potentiometers to simulate application features such as voltage trim, remote voltage sense, voltage tracking, current sharing, etc.
• MPLAB® ICD 2 or REAL ICE support ready
• RS-232 serial channel
• Example software for implementing digital dual synchronous buck converter

Package Contents

• dsPICDEM SMPS Buck development board
• Example software, educational material and documentation on CD

Minimum Requirements

• MPLAB IDE v7.42 or later
• MPLAB ICD 2
• MPLAB C30 v2.03 or later
• dsPICDEMTM SMPS Buck development board

dsPICDEM 28-Pin Starter Development Board

The low cost dsPICDEM 28-pin starter demonstration board allows the user to easily validate a development tool setup using a 28-pin SDIP or SOIC dsPIC30F device. The demonstration board has a socketed dsPIC30F2010 digital signal controller, power supply regulator, crystal oscillator, ICD header, serial port, power on indicator, reset push-button, 28L SOIC layout pad and a prototyping area.