Datasheet

ADP1872/ADP1873 Data Sheet
Rev. B | Page 38 of 40
TYPICAL APPLICATION CIRCUITS
DUAL-INPUT, 300 kHz HIGH CURRENT APPLICATION CIRCUIT
MURATA: (HIGH VOLTAGE INPUT CAPACITORS)
22µ
F, 25V, X7R, 1210 GRM32ER71E226KE15 L
PANASONIC: (OUTPUT CAPACITORS)
270µF (SP-SERIES) 4V, 7mΩ EEFUE0G271LR
INFINEON MOSFETs:
BSC042N03MS G (LOWER-SIDE)
BSC080N03MS G (UPPER-SIDE)
WURTH INDUCTORS:
1µH, 3.3mΩ, 20A 7443552100
R5
100kΩ
Q3
Q4
Q1
Q2
HIGH VOLTAGE INPUT
VIN = 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
C
C
571pF
C
F
57pF
R
C
47kΩ
C1
1µF
C2
0.1µF
LOW VOLTAGE INPUT
V
DD
= 5.0V
JP1
08297-088
Figure 89. Application Circuit for 12 V Input, 1.8 V Output, 15 A, 300 kHz (Q2/Q4 No Connect).
SINGLE-INPUT, 600 kHz APPLICATION CIRCUIT
MURATA: (HIGH VOLTAGE INPUT CAPACITORS)
22µF, 25V, X7R, 1210 GRM32ER71E226KE15 L
PANASONIC: (OUTPUT CAPACITORS)
180µF (SP-SERIES) 4V, 10mΩ EEFUE0G181XR
INFINEON MOSFETs:
BSC042N03MS G (LOWER-SIDE)
BSC080N03MS G (UPPER-SIDE)
WURTH INDUCTORS:
0.47µH, 0.8mΩ, 50A 744355147
R5
100kΩ
Q3 Q4
Q1 Q2
HIGH VOLTAGE INPUT
VIN = 5.5V
C12
100nF
V
OUT
= 2.5V, 15A
C3
22µF
C4
22µF
C5
22µF
C6
22µF
C7
22µF
C22
180µF
+
C21
180µF
+
C20
180µF
+
0.47µH
R6
2Ω
C13
1.5nF
R1 47.5kΩ
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
C
C
271pF
C
F
27pF
R
C
47kΩ
C1
1µF
C2
0.1µF
JP1
08297-089
Figure 90. Application Circuit for 5.5 V Input, 2.5 V Output, 15 A, 600 kHz (Q2/Q4 No Connect)