User`s guide

MCP1630 DUAL BUCK DEMO
BOARD USER’S GUIDE
© 2005 Microchip Technology Inc. DS51531A-page 5
Chapter 1. Product Overview
1.1 INTRODUCTION
The MCP1630 Dual Buck Demo Board is used to evaluate the Microchip MCP1630
analog, high-speed Pulse Width Modulator (PWM) used in a dual synchronous, buck
regulator, power-converter application. The evaluation board is a complete,
stand-alone, dual-output, dc-dc converter with +12V input, adjustable dual output at
20A per output.
This chapter also covers the following topics:
• What is the MCP1630 Dual Buck Demo Board?
• What the MCP1630 Dual Buck Demo Board kit includes.
FIGURE 1-1: Dual Buck Demo Board Block Diagram.
+
Synch
Gate
Drive
CS
PWM
OSC
FB
COMP
V
REF
+
+V
IN
V
OUT1
CS
+
Synch
Gate
Drive
CS
PWM
OSC
FB
COMP
V
REF
V
OUT2
PIC16F684
+
+
Active-Filter
MCP6231 SC-70
Active-Filter
MCP6231 SC-70
L
BUCK
L
BUCK
C
OUT1
C
OUT2
V
OUT1
V
OUT2
CS
CS
60T
1T
Temp
Sense
#1
Temp
Sense
#2
Temperature sensor located
close to the power switches of
each channel
“Bit bang reference”
MCP1630
MCP1630
+V
CC
–
–