DM300023 Microchip Technology, DM300023 Datasheet - Page 11

• Manufacturer Part Number: DM300023
• Description: KIT DEMO DSPICDEM SMPS BUCK
• Manufacturer: Microchip Technology
• Series: dsPIC™r

Specifications of DM300023

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 2, Non-Isolated
• Voltage - Input: 7 ~ 15V
• Regulator Topology: Buck
• Board Type: Fully Populated
• Utilized Ic / Part: dsPIC30F2020
• Processor To Be Evaluated: dsPIC30F202x/1010
• Interface Type: RS-232
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Voltage - Output: -
• Power - Output: -
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

1.1
© 2006 Microchip Technology Inc.
OVERVIEW
Modern power supplies are becoming smaller, more efficient, more flexible and less
costly. These desirable enhancements have come about as digital signal controllers
have been incorporated into Switched Mode Power Supply (SMPS) designs. Buck
converters are used when the desired output voltage is smaller than the input voltage.
This chapter introduces and provides an overview of the dsPICDEM™ SMPS Buck
Development Board. Topics covered include:
• Overview
• dsPICDEM™ SMPS Buck Development Board Kit
• dsPICDEM™ SMPS Buck Development Board Features
Figure 1-1 is a block diagram of the dsPICDEM™ SMPS Buck Development Board, A
dsPIC30F2020 DSC controls two independent DC/DC synchronous buck converters,
providing closed-loop Proportional, Integral, Derivative (PID) control in software to
maintain desired output voltage levels. The dsPIC
sary memory and peripherals for A/D conversion, PWM generation and general
purpose I/O, precluding the need to perform these functions in external circuitry.
FIGURE 1-1:
Communication
V
IN
Chapter 1. Introduction
AN4
AN0
AN1
AN2
AN3
OC1
PWM1H
PWM1L
PWM2H
SYNCHRONOUS BUCK CONVERTER BLOCK DIAGRAM
PWM2L
V
Vg
I1
V1
I2
V2
DD
VIN
VIN
dsPICDEM™ SMPS BUCK
DEVELOPMENT BOARD
BUCK CONVERTER 1
BUCK CONVERTER 2
®
I1
I2
DSC device provides the neces-
USER’S GUIDE
V2
V1
V
G
DS70181A-page 7
VOUT2
LOAD
VOUT1