Fairchild SEMICONDUCTOR RC5040 - Manual (Page 6)

AN42 APPLICATION NOTE
6
Figure 4. Synchronous DC-DC Converter Application Schematic Using RC5040
Figure 5. Non-Synchronous DC-DC Converter Application Schematic Using RC5042
VO
GND
VID3
VID2
VID1
VID0
8
7
6
5
4
3
2
1
9
10 11
12
13
14
15
16
17
18
19
20
VCC
PWRGD
RC5040
VCC
VCC
OUTEN
R5
10K C10
0.1 µ F
C11
0.22 µ F
R6
10K
R4 10K
10K
10K
10K R3
R2
R1
CEXT
39pF
C7
0.1 µ F
C6
4.7 µ F
DS1
1N5817
65-AP42-04
R7
10K
C1
1000 µ F
C2 C3
1000 µ F 1000 µ F
C5
0.1 µ F
DS2
1N5817
C12
1 µ F
L1
1.3 µ H
M1
2SK1388
M2
2SK1388
C8 C9
0.1 µ F 0.1 µ F
RSENSE
8m Ω
1500
µ F
C13
L2
2.6 µ H
M3
2SK1388
VREF
C15 C14
1500
µ F
1500
µ F
C4
0.1 µ F
VO
GND
VID3
VID2
VID1
VID0
VCC
PWRGD
RC5042
VCC
65-AP42-05
VCC
C10
0.1 µ F
C11
0.22 µ F
R6
10K
R4 10K
10K
10K
10K R3
R2
R1
CEXT
39pF
C7
0.1 µ F
C6
4.7 µ F
DS1
MBR1545CT
R7
10K
1000 µ F
C1 C2 C3
1000 µ F 1000 µ F
C5
0.1 µ F
DS2
1N5817
C12
1 µ F
L1
1.3 µ H
M1
2SK1388
M2
2SK1388
C8 C9
0.1 µ F 0.1 µ F
RSENSE
8m Ω
C14
1500
µ F
1500
µ F
C13
8
7
6
5
4
3
2
1
9
10
11
12
13
14
15
16
VREF
C15
1500
µ F
L2
2.6 µ H
C4
0.1 µ F