Evaluation Board Schematics And Layout; 1.8 V Output, 300 Khz, 14 A Application Circuit - Analog Devices ADP1872-EVALZ User Manual

ADP1872-EVALZ/ADP1873-EVALZ User Guide

EVALUATION BOARD SCHEMATICS AND LAYOUT

This section provides the schematics for the 1.8 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

LOW VOLTAGE INPUT
V = 5.0V
DD
(J1 HEADER)
JP2
(HEADER)
C11
571pF
C10
R3
47kΩ
57pF
FB1 (SMB)
R1 30kΩ
V
OUT
R2
15kΩ
C2 C1
0.1µF 1µF
VREG1 (SMB)
HIGH VOLTAGE INPUT
JP3
U1
C12
ADP1872
100nF
VIN BST
1 10
COMP/EN SW
2 9
FB DRVH
3 8
R4
0kΩ
GND PGND
4 7
VDD DRVL
5 6
R5
100kΩ
Figure 29. 1.8 V Output, 300 kHz, 14 A Application Circuit
V = 13V
IN
TP_VIN1 (BANANA PLUG)
C3 C4 C5
22µF 22µF 22µF
Q1 Q2
L1
1.0µH
+
R6 C20 C21
2Ω
270µF 270µF
Q3 Q4
C13
1.5nF
C14 C15
N/A N/A
TP_PGND
(BANANA PLUG)
Rev. A | Page 11 of 20
C6 C7 C8
22µF 22µF N/A
(BANANA PLUG)
V = 1.8V, 14A
OUT
+ + + +
C22 C23 C24
270µF 270µF N/A
C16 C17 C18 C19
N/A N/A N/A N/A
UG-057
VIN1 (SMB)
TP_VOUT1
VOUT2 (SMB)