Datasheet

MAX5054–MAX5057
4A, 20ns, Dual MOSFET Drivers
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REG5
R21
24.9kΩ
1%
C1
100pF
1
RCOSC
+V
IN
TP1
R25
100kΩ
C2
390pF
3
RCFF
5
CSS
4
COM
6
COMP
7
FB
8
REG5
2
SYNCOUT
C5 4700pF
D8
21
R15 31.6kΩ 1%
R16
10.5kΩ
1%
C4
4.7µF
REG5
REG5
9
REG9
C3
4.7µF
REG9
10
PVIN
C6
0.1µF
PVIN
11
STT
12
LXVDD
13
LXH
C18 1000pF
R27
10Ω
C19 1µF
LXH
TP3
14
LXL
R3 2.2kΩ R11 360Ω
C17 0.33µF
C24 1000pF
4 3
1 2
U2
R20
0Ω
R19
475Ω
R12
100kΩ
1%
C27
0.15µF
C36
0.22µF
C28
0.047µF
R1
11.5kΩ
1%
R2 2.55kΩ 1%
V
OUT
R23
10Ω
TRIM
SENSE (+) SENSE (-)
R24
10Ω
3 52
1 4
OUT
IN
PGND
GND
FB
U3
REG9
C26 0.1µF
C22
2200pF
2kV
SYNCIN
28
GND
24
AVIN
23
BST
22
DRVH
21
XFRMRH
20
UVLO
25
FLTINT
27
STARTUP ON/OFF
26
R4
1MΩ
1%
R6 1MΩ 1%
C7
0.22µF
+V
IN
+VIN
REG9
+V
IN
R5
38.3kΩ
1%
D1
R7
0Ω
R8
8.2Ω
2
C8
4.7µF
XFRMRH
DRVB
19
DRVDD
18
PGND
17
DRVL
16
CS
15
IC_PADDLE
DRVB
REG9
C9 1µF
R14
270Ω
R9
8.2Ω
C20
220pF
D3
12
6
5
4
1
2
3
7
8
N2
R17
0.027Ω
1%
C21
4.7µF
80V
R18 4.7Ω
PVIN +V
IN
R22
15kΩ
1 2
1 6
D5
4T
R13
47Ω
C34 330pF
2 5
8T
D7
1
2
3
2
1
4
5
6
6
7
8
N3
D4
1
2
3
2
1
4
5
7
8
N4
R10 20Ω
C23 1000pF
8
10
2T
T1
L1
2.4µH
U5
5V
C31
0.1µF
5 4 3
1 2
V
CC
OUT GND
U1: MAX5051 U2: PS2913-1-M U3: MAX8515 U4: MAX5054 U5: MAX5023M U6: PS9715 N1, N2: SI4486 N3, N4: SI4864 N5: BSS123
AN CA
U6
LXH
R26
560Ω
R28
2kΩ
C13 270µF 4V
C14 270µF 4V
C15 270µF 4V
C33 1µF 10V
V
OUT
VOUT SGND
5V
+V
IN
C16 3.3µF
21
D6
C35
1µF
C32
1µF
1 2
3
4
8 7
6
5
IN OUT
WDI
N.C.
EN GND RESET
HOLD
21
D2
N1
3
2
1
8
7
6
5
4
XFRMRH
XFRMRH
C10 0.47µF 100V
C11 0.47µF 100V
C12 1µF 100V
C25 0.047µF
100V
-V
IN
+V
IN
N5
3 2
1
R29
1Ω
XFRMRH
DRVB
MAX5051
U1
REG5
V
OUT
V
OUT
MAX5054
U4
+5V +5V
C30 0.1µF
6 4 7 1
INA+
INB-
V
DD
GND
OUTA OUTB INB+ INA-
8 2 5 3
29
Figure 6. Schematic of a 48V Input, 3.3V at 15A Output Synchronously Rectified, Isolated Power Supply