Analog Devices ADP1872-EVALZ, Руководство пользователя

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UG-057 ADP1872-EVALZ/ADP1873-EVALZ User Guide
Rev. A | Page 10 of 20
TYPICAL APPLICATION CIRCUITS
DUAL-INPUT, 300 kHz HIGH CURRENT APPLICATION CIRCUIT
MURATA: (HIGH VOLTAGE INPUT CAPACITORS)
22µF, 25V, X7R, 1210 GRM32ER71E226KE15L
PANASONIC: (OUTPUT CAPACITORS)
270µF (SP-SERIES) 4V, 7mΩ EEFUE0G271LR
INFINEON MOSFETs:
BSC042N03MS G (BOTTOM)
BSC080N03MS G (TOP)
WURTH INDUCTORS:
1µH, 3.3mΩ, 20A 7443552100
R5
100kΩ
Q3 Q4
Q1 Q2
HIGH VOLTAGE INPUT
V
IN
= 12V
C12
100nF
V
OUT
= 1.8V, 15A
C3
22µF
C4
22µF
C5
22µF
C6
22µF
C7
22µF
C23
270µF
+
C22
270µF
+
C21
270µF
+
C20
270µF
+
1.0µH
R6
2Ω
C13
1.5nF
R1 30kΩ
R2
15kΩ
V
OUT
1
VIN
10
BST
2 COMP/EN 9 SW
3
FB
8
DRVH
4 GND 7 PGND
5
VDD
6
DRVL
ADP1872/
ADP1873
C11
571pF
C10
57pF
R3
47kΩ
C1
1µF
C2
0.1µF
LOW VOLTAGE INPUT
V
DD
= 5.0V
JP2
08548-
088
JP3
Figure 27. Application Circuit for 12 V Input, 1.8 V Output, 15 A, 300 kHz (Q2/Q4 No Connect)
MURATA: (HIGH VOLTAGE INPUT CAPACITORS)
22µF, 25V, X7R, 1210 GRM32ER71E226KE15L
PANASONIC: (OUTPUT CAPACITORS)
270µF (SP-SERIES) 4V, 7mΩ EEFUE0G271LR
INFINEON MOSFETs:
BSC042N03MS G (BOTTOM)
BSC080N03MS G (TOP)
WURTH INDUCTORS:
0.72µH, 1.65mΩ, 35A 744325072
Q3 Q4
Q1 Q2
HIGH VOLTAGE INPUT
V
IN
= 13V
LOW VOLTAGE INPUT
V
DD
= 5V
C12
100nF
V
OUT
= 1.8V, 20A
C3
22µF
C4
22µF
C5
22µF
C6
22µF
C7
22µF
C23
270µF
+
C22
270µF
+
C21
270µF
+
C20
270µF
+
0.8µH
R6
2Ω
C13
1.5nF
R1 30kΩ
R2
15kΩ
V
OUT
1
VIN
10
BST
2
COMP/EN
9
SW
3
FB
8
DRVH
4
GND
7
PGND
5
VDD
6
DRVL
ADP1872/
ADP1873
C11
800pF
C10
80pF
R3
33.5kΩ
C1
1µF
C2
0.1µF
JP2
08548-
090
JP3
Figure 28. Application Circuit for 13 V Input, 1.8 V Output, 20 A, 300 kHz (Q2/Q4 No Connect)