ISL6551EVAL1 Intersil, ISL6551EVAL1 Datasheet - Page 50

• Manufacturer Part Number: ISL6551EVAL1
• Description: EVALUATION BOARD ISL6551
• Manufacturer: Intersil

Specifications of ISL6551EVAL1

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Isolated
• Voltage - Output: 3.3V
• Current - Output: 60A
• Voltage - Input: 36 ~ 75V
• Regulator Topology: Buck
• Frequency - Switching: 470kHz
• Board Type: Fully Populated
• Utilized Ic / Part: ISL6551
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

D
C
B
A
ISENSE
BDAC
SAVDDP
VOPOUT
Note:
F_SW=235kHz
Tdead=171ns
Resonant_Delay=40ns
Ramp=5.05E+4V/S
LEB=255n
SoftStart=10ms
Vclamp=3.75V >Voutmax=3.63V
220pF
BGREF
3.3Vsense
C40
TP31
R64
73.2
R71 1k
5
5
R132
2.21k
100, DNP0603
R73
DNP0603
R61 1.24k
R65
73.2
R77
MMBT3906LT1, DNP
C41
DNP
1
R75 1.5k
TP30
R66
1k
Q21
C49
DNP0603
R60 49.9k
R63
120k
C46
0.1u
SAICRTN
180p, NPO, 5%
C42
0.1u
R58 15k
TP33
R59 7.5k
CSS
BJ5
BJ6
4
4
R62
C43
33n
R76
50
C37
399k
FBC (ISL6551) Circuits
FBC (ISL6551) Circuits
TP34
SABIAS
R50 46.4k
D34
MBR0530T1
R70
5.1K
C48
22n, NPO, 5%
TP29
26
27
28
10
11
1
2
3
4
5
6
7
8
9
C80
0.1u
Protect ICs from
reverse biasing
C47
470p, NPO, 5%
VSS
CT
RD
R_RESDLY
R_RA
ISENSE
PKILIM
BGREF
R_LEB
CS_COMP
CSS
EANI
EAI
EAO
ISL6551IR
1.263V
M6
3
3
C36
0.1u
SARTN
VDD
VDDP1
VDDP2
PGND
UPPER1
UPPER2
LOWER1
LOWER2
SYNC1
SYNC2
ON/OFF
DCOK
LATSD
SHARE
SAICRTN
100u, 16V
TP32
R74
30.1k
C32
25
24
23
22
21
20
19
18
17
16
15
14
13
12
R52
10
0.1u
C38
C45
100p
Title
Size
Date:
A
R53
10
R57
5.6
R56
Telecom Power Supply Schematics, 3.3V@60A
Document Number
ISL6551EVAL1
R54
10
Thursday, April 18, 2002
5.6
C39
0.1u
SAICRTN
2
2
10n
Tie this to
Synchonous
Drivers RTN
C34
R48 49.9k
D20 LED
SAPGND
C44
1n
R55
20k
R49
C33
1n
LM393D
R67 49.9k
R72 20k
5
6
30
+
-
C31
1n
Sheet
3
2
U1A
OUT
U1B
SHARE BUS
+
-
SAICRTN
UPPER2
LOWER1
LOWER2
SYNC1
4
UPPER1
START
7
SYNC2
C35
0.1u
1
OUT
1
LM393D
o f
1
6
SA+12V
R51
20k
R e v
BJ7
C
D
C
B
A