ADP1879 Analog Devices, ADP1879 Datasheet - Page 37

• Manufacturer Part Number: ADP1879
• Description: Synchronous Buck Controller with Constant On-Time and Valley Current Mode with Power Saving Mode
• Manufacturer: Analog Devices

Data Sheet
TYPICAL APPLICATION CIRCUITS
12 A, 300 kHz HIGH CURRENT APPLICATION CIRCUIT
5.5 V INPUT, 600 kHz CURRENT APPLICATION CIRCUIT
V
V
V
V
REG
OUT
REG
OUT
C
56pF
22pF
PAR
C
0.1µF
F
0.1µF
R
R
C2
C2
R7 10kΩ
R7 10kΩ
TOP
TOP
R
R
32kΩ
1kΩ
1kΩ
2kΩ
BOT
BOT
C
560pF
100kΩ
C
220pF
100kΩ
R
49.3kΩ
R
56.9kΩ
R
R
1µF
1µF
C
C
C
C
RES
RES
C1
C1
Figure 94. Application Circuit for 5.5 V Input, 2.5 V Output, 12 A, 600 kHz (Q2/Q4 No Connect)
Figure 93. Application Circuit for 12 V Input, 1.8 V Output, 12 A, 300 kHz (Q2/Q4 No Connect)
JP3
JP3
1
2
3
4
5
6
7
1
2
3
4
5
6
7
C
22µF
C
22µF
VIN
COMP
EN
FB
GND
RES
VREG
VIN
COMP
EN
FB
GND
RES
VREG
VIN
VIN
ADP1878/
ADP1878/
ADP1879
ADP1879
PGOOD
PGOOD
PGND
PGND
DRVH
DRVH
DRVL
DRVL
BST
BST
SW
SW
SS
SS
14
13
12
11
10
14
13
12
11
10
9
8
9
8
C
100nF
C
100nF
5kΩ
5kΩ
BST
BST
HIGH VOLTAGE INPUT
HIGH VOLTAGE INPUT
C
34nF
C
34nF
SS
SS
Rev. 0 | Page 37 of 40
V
V
REG
REG
V
V
Q1
Q3
Q1
Q3
IN
IN
= 5.5V
= 12V
Q2
Q4
Q2
Q4
22µF
22µF
C3
C3
R
2Ω
R
2Ω
C
1.5nF
C
1.5nF
0.47µH
1.2µH
SNB
SNB
SNB
SNB
MURATA: (HIGH VOLTAGE INPUT CAPACITORS)
PANASONIC: (OUTPUT CAPACITORS)
INFINEON MOSFETs:
WÜRTH INDUCTORS:
MURATA: (INPUT CAPACITORS)
PANASONIC: (OUTPUT CAPACITORS)
INFINEON MOSFETs:
WÜRTH INDUCTORS:
22µF
22µF
22µF, 25V, X7R, 1210 GRM32ER71E226KE15L
270µF (SP-SERIES), 4V, 7mΩ, EEFUE0G271LR
BSC042N03MS G (LOWER SIDE)
BSC080N03MS G (UPPER SIDE)
1.2µH, 2mΩ, 20A, 744325120
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
C24
N/A
N/A
270µF
180µF
22µF
22µF
C20
C20
+
+
C5
C5
C25
C25
N/A
N/A
+
+
22µF
22µF
270µF
180µF
C6
C6
C21
C21
+
+
C26
C26
N/A
N/A
V
V
22µF
22µF
+
+
OUT
OUT
270µF
180µF
C7
C7
C22
C22
+
+
= 1.8V, 12A
= 2.5V, 12A
C27
C27
N/A
N/A
N/A
+
N/A
+
C8
C8
270µF
ADP1878/ADP1879
C23
C23
+
N/A
+
C14 TO C19
N/A
C14 TO C19
N/A
N/A
N/A
C9
C9
+
+