Datasheet

ADP1870/ADP1871 Data Sheet
Rev. B | Page 40 of 44
300 kHz HIGH CURRENT APPLICATION CIRCUIT
MURATA: (HIGH VOLTAGE INPUT CAPACITORS)
22µF, 25V, X7R, 1210 GRM32ER71E226KE15L
SANYO OSCON:
270µF, 16SVPC270M, 14mΩ
PANASONIC: (OUTPUT CAPACITORS)
270µF, SP-SERIES, 4V, 7mΩ EEFUE0G271LR
INFINEON MOSFETs:
BSC042N03MS G (LOWER SIDE)
BSC080N03MS G (UPPER SIDE)
WÜRTH INDUCTORS:
0.72µH, 1.65mΩ, 35A 744325072
R5
100kΩ
Q3 Q4
Q1 Q2
HIGH VOLTAGE INPUT
V
IN
= 13V
C12
100nF
V
OUT
= 1.8V, 12A
C3
22µF
C4
22µF
C5
22µF
C6
N/A
C7
N/A
C8
N/A
C9
270µF
C23
270µF
+
C22
270µF
+
C21
270µF
+
C20
270µF
+
C27
N/A
C14 TO C19
N/A
+
C26
N/A
+
C25
N/A
+
C24
N/A
+
1.4µH
R6
2Ω
C13
1.5nF
R1 30kΩ
R2
15kΩ
R4
0Ω
V
OUT
1
VIN
10
BST
2
COMP/EN
9
SW
3
FB
8
DRVH
4
GND
7
PGND
5
VREG
6
DRVL
ADP1870/
ADP1871
C
C
528pF
C
F
53pF
R
C
43kΩ
C1
1µF
C28
10µF
C2
0.1µF
JP3
08730-090
Figure 94. Application Circuit for 13 V Input, 1.8 V Output, 12 A, 300 kHz (Q2/Q4 No Connect)