ADP1875 Analog Devices, ADP1875 Datasheet - Page 40

• Manufacturer Part Number: ADP1875
• Description: Synchronous Buck Controller with Constant On-Time, Valley Current Mode, and Power Saving Mode
• Manufacturer: Analog Devices

ADP1874/ADP1875
TYPICAL APPLICATION CIRCUITS
12 A, 300 kHz HIGH CURRENT APPLICATION CIRCUIT
5.5 V INPUT, 600 kHz APPLICATION CIRCUIT
V
V
REG
C
OUT
V
V
56pF
REG
OUT
PAR
22pF
0.1µF
C
F
0.1µF
R
C2
R7 10kΩ
R
TOP
C2
R7 10kΩ
TOP
R
1kΩ
2kΩ
BOT
R
100kΩ
C
560pF
R
49.3kΩ
3.2kΩ
R
1kΩ
BOT
1µF
C
C
100kΩ
C
220pF
R
56.9kΩ
RES
R
C1
1µF
C
C
RES
C1
Figure 98. Application Circuit for 5.5 V Input, 2.5 V Output, 12 A, 600 kHz (Q2/Q4 No Connect)
Figure 97. Application Circuit for 12 V Input, 1.8 V Output, 12 A, 300 kHz (Q2/Q4 No Connect)
JP3
1
2
3
4
5
6
7
8
C
22µF
JP3
1
2
3
4
5
6
7
8
VIN
VIN
COMP
EN
FB
GND
RES
VREG
VREG_IN
C
22µF
VIN
VIN
COMP
EN
FB
GND
RES
VREG
VREG_IN
ADP1874/
ADP1875
ADP1874/
ADP1875
PGOOD
TRACK
PGOOD
PGND
DRVH
TRACK
DRVL
DRVH
PGND
BST
DRVL
SW
SS
BST
SW
SS
16
15
14
13
12
11
10
9
16
15
14
13
12
11
10
9
C
100nF
5kΩ
BST
10kΩ
C
100nF
5kΩ
BST
10kΩ
HIGH VOLTAGE INPUT
HIGH VOLTAGE INPUT
Rev. 0 | Page 40 of 44
V
V
REG
V
REG
V
V
REG
Q1
Q3
REG
IN
V
Q1
Q3
IN
= 12V
= 5.5V
C
34nF
Q2
Q4
SS
C
34nF
22µF
Q2
Q4
SS
22µF
C3
C3
R
2Ω
C
1.5nF
1.2µH
SNB
R
2Ω
SNB
C
1.5nF
MURATA: (HIGH VOLTAGE INPUT CAPACITORS)
PANASONIC: (OUTPUT CAPACITORS)
INFINEON MOSFETs:
WÜRTH INDUCTORS:
1.2µH
SNB
SNB
MURATA: (HIGH VOLTAGE INPUT CAPACITORS)
PANASONIC: (OUTPUT CAPACITORS)
INFINEON MOSFETs:
WÜRTH INDUCTORS:
22µF
22µF, 25V, X7R, 1210 GRM32ER71E226KE15L
270µF, SP-SERIES, 4V, 7mΩ EEFUE0G271LR
BSC042N03MS G (LOWER SIDE)
BSC080N03MS G (UPPER SIDE)
1.2µH, 2.00mΩ, 20A 744325120
22µF
22µF, 25V, X7R, 1210 GRM32ER71E226KE15L
180µF, SP-SERIES, 4V, 10mΩ EEFUE0G181XR
BSC042N03MS G (LOWER SIDE)
BSC080N03MS G (UPPER SIDE)
0.47µH, 0.8mΩ, 30A 744355147
C4
C4
C24
N/A
C24
N/A
270µF
22µF
180µF
22µF
C20
C5
+
C20
+
C5
C25
N/A
C25
N/A
+
22µF
270µF
+
22µF
C6
180µF
C21
+
C6
C21
+
C26
N/A
V
C26
N/A
22µF
+
OUT
V
22µF
270µF
+
OUT
C7
180µF
C7
C22
+
= 1.8V, 12A
C22
+
= 2.5V, 12A
C27
N/A
C27
N/A
N/A
+
C8
270µF
+
N/A
C8
C23
+
C23
N/A
+
C14 TO C19
N/A
C14 TO C19
N/A
N/A
C9
+
N/A
C9
+