2003 Microchip Technology Inc.
DS51315A-page 3
M
MCP1601 Eval. Board
User Guide
Chapter 1. MCP1601 Evaluation Board
1.1
INTRODUCTION
The MCP1601 Evaluation Board is designed to demonstrate the use of the MCP1601
Synchronous BUCK Regulator in a step down, inductor-based DC/DC converter
application. It also describes the capability of the MCP1601 Evaluation Board and how
to select the desired Synchronous Converter operating mode and program the output
voltage.
The Evaluation Board Schematic is shown is Figure 1-1.
FIGURE 1-1:
MCP1601 Evaluation Board Schematic.
OUT
Output
AGND
Input
AGND
AGND
AGND
AGND
R1
1.24 M
Ω
2
1
TP6
SYNC/PWM
U2
2 pos Switch
1
2
3
4
1
ON
R2
634 K
Ω
2
1
R6
1.0 M
Ω
2
1
R5
1.0 M
Ω
2
1
C1
10 µF
1
2
C2
10 µF
1
2
TP2
+V
L1
10 µH
TP1
+V
IN
R3
619 K
Ω
2
1
U1
MCP1601
1
2
3
4
5
6
7
8
V
IN
SHDN
FB
AGND
SYNC/
PWM
V
OUT
PGND
LX
TP7
AGND
TP3
Pgnd
C3
47 pF
1
2
R4
200 K
Ω
2
1
TP5
/SHDN
U3
2 pos Switch
1
2
3
4
1
2
ON
TP4
P
GND
ON
2
ON
