ADP3416 データシートの表示（PDF） - Analog Devices
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ADP3416 Datasheet PDF : 8 Pages
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ADP3416
Printed Circuit Board Layout Considerations
Use the following general guidelines when designing printed
circuit boards:
1. Trace out the high current paths and use short, wide traces to
make these connections.
2. Connect the PGND Pin of the ADP3416 as close as possible
to the source of the lower MOSFET.
3. The VCC bypass capacitor should be located as close as
possible to VCC and PGND Pins.
Typical Application Circuits
The circuit in Figure 3 shows how two drivers can be com-
bined with the ADP3165 to form a total power conversion
solution for VCC(CORE) generation in a high current Intel CPU
computer.
VIN12V
VINRTN
L1
1H
270F/16V ؋ 3
OS-CON SP SERIES
18m⍀ ESR(EACH)
+
+
+
C1 C2
C3
R4
10⍀
C4
4.7F
U1
ADP3165
1 VID4
VCC 20
2 VID3
REF 19
FROM
CPU
OUTEN
U5
1/6 7404
RA
32.4k⍀
Q1
2N7000
R2
10k⍀
COC
1.2nF
RB
10.0k⍀
3 VID2
PWM1 18
4 VID1
PWM2 17
5 VID0
PWM3 16
6 SHARE
PC 15
7 COMP
PGND 14
8 GND
CS– 13
9 FB
CS+ 12
10 CT
PWRGD 11
C9
150pF
C10
100pF
R3
1k⍀
R5
20⍀
C6
15nF
R6
2k⍀
Z1
ZMM5263BCT
R7
5m⍀
10F ؋ 2
MLCC
D1
MBR052LTI
U2
C11
100nF
ADP3416
Q2
FZ649TA
1 BST DRVH 8
2 IN
SW 7
3 NC PGND 6
4 VCC DRVL 5
C12
4.7F
Q7
FDB8030L
C7
1nF
D2
MBR052LTI
U3
C14
100nF
ADP3416
C15
4.7F
1 BST
2 IN
3 NC
4 VCC
DRVH 8
SW 7
PGND 6
DRVL 5
Q8
FDB8030L
D3
MBR052LTI
C18
4.7F
U4
C17
100nF
ADP3416
1 BST
2 IN
3 NC
4 VCC
DRVH 8
SW 7
PGND 6
DRVL 5
NC = NO CONNECT
Q9
FDB8030L
Q3
FDB7030L
L2
600nH
2200F/6.3V ؋ 9
RUBYCON MBZ SERIES
12m⍀ESR(EACH)
VCC(CORE)
1.1V – 1.85V
C13
15nF
R8
2⍀
+
C20
+
C29
65A
VCC(CORE)RTN
Q4
FDB7030L
L3
600nH
C16
15nF
R9
2⍀
10F ؋ 27
MLCC
Q5
FDB7030L
L4
600nH
C19
15nF
R10
2⍀
Figure 3. 65 A Intel Pentium 4 CPU, VR Down Guideline Design
REV. A
–7–
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