Datasheet

Evaluation Board User Guide UG-057
Rev. 0 | Page 11 of 20
EVALUATION BOARD SCHEMATICS AND LAYOUT
This section provides the schematics for the 1.8 V output, 300 kHz, 14 A application circuit and the 3.3 V output, 300 kHz, 14 A application
circuit. For other application circuits, see the ADP1872/ADP1873 data sheet for the recommended values for the external components.
1.8 V OUTPUT, 300 kHz, 14 A APPLICATION CIRCUIT
08548-103
R5
100k
Q3 Q4
Q1 Q2
HIGH VOLTAGE INPUT
V
IN
= 13V
C12
100nF
V
OUT
= 1.8V, 14A
C3
22µF
C14
N/A
C15
N/A
C16
N/A
C17
N/A
C18
N/A
C19
N/A
C4
22µF
C5
22µF
C6
22µF
C7
22µF
VIN1 (SMB)
TP_VOUT1
(BANANA PLUG)
VOUT2 (SMB)
VREG1 (SMB)
C8
N/A
C24
N/A
+
C22
270µF
+
C23
270µF
+
C21
270µF
+
C20
270µF
+
L1
1.0µH
R6
2
C13
1.5nF
R1 30k
R2
15k
R4
0k
V
OUT
1
VIN
10
BST
2
COMP/EN
9
SW
3
FB
8
DRVH
4
GND
7
PGND
5
VDD
6
DRVL
U1
ADP1872
C11
571pF
C10
57pF
R3
47k
C1
1µF
C2
0.1µF
LOW VOLTAGE INPUT
V
DD
= 5.0V
JP2
(HEADER)
(J1 HEADER) TP_VIN1 (BANANA PLUG)
FB1 (SMB)
TP_PGND
(BANANA PLUG)
JP3
Figure 30. 1.8 V Output, 300 kHz, 14 A Application Circuit
3.3 V OUTPUT, 300 kHz, 14 A APPLICATION CIRCUIT
08548-104
R5
100k
Q3 Q4
Q1 Q2
HIGH VOLTAGE INPUT
V
IN
= 13V
C12
100nF
V
OUT
= 3.3V, 14A
C3
22µF
C14
N/A
C15
N/A
C16
N/A
C17
N/A
C18
N/A
C19
N/A
C4
22µF
C5
22µF
C6
22µF
C7
22µF
VIN1 (SMB)
TP_VOUT1
(BANANA PLUG)
VOUT2 (SMB)
VREG1 (SMB)
C8
N/A
C24
N/A
+
C22
N/A
+
C23
N/A
+
C21
330µF
+
C20
330µF
+
L1
2.0µH
R6
2
C13
1.5nF
R1 67.5k
R2
15k
R4
0k
V
OUT
1
VIN
10
BST
2
COMP/EN
9
SW
3
FB
8
DRVH
4
GND
7
PGND
5
VDD
6
DRVL
U1
ADP1872
C11
571pF
C10
57pF
R3
47k
C1
1µF
C2
0.1µF
LOW VOLTAGE INPUT
V
DD
= 5.0V
JP2
(HEADER)
(J1 HEADER) TP_VIN1 (BANANA PLUG)
FB1 (SMB)
TP_PGND
(BANANA PLUG)
JP3
Figure 31. 3.3 V Output, 300 kHz, 14 A Application Circuit