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MAX5058EUI+T
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P25
MAX5058/MAX5059
Parallelable Secondar
y-Side Synchr
onous Rectifier
Driver and Feedback-Generator Contr
oller ICs
22
______________________________________________________________________________________
T
ypical Application Circuit
ZCP
QSYNC
VSO
28
15
ZCN
QREC
VSN
VSP
CSO
CSN
CSP
VP
V+
V
REG
VDR
BUF_IN
INV
L1
2.4
μ
H
COMPV
I
REF
V
OUT
RMGU
RMGD
MRGD
MRGU
TSF
COMPS
SFP
SFN
TP8
GND
PGND
IC_PADDLE
1
2
26
16
17
18
19
20
21
22
23
25
24
14
13
12
11
10
9
8
7
6
5
4
3
27
29
MAX5058
U3
R23
10
Ω
C36
1
μ
F
TP7
C38
0.068
μ
F
TP2
TP1
TPMU
TPMD
TP3
R12
34.8k
Ω
0.5%
C37
220pF
R33
340k
Ω
0.5%
R32
698k
Ω
0.5%
V
DD
= 3V
R
L
= 16
Ω
f
IN
= 10kHz
C28
0.047
μ
F
R2
19.1k
Ω
1%
R1
19.1k
Ω
1%
OPTO_CAT
(CSP)
R34
220
Ω
VREG
R31
220
Ω
1%
C39
220pF
R26
0.002
Ω
R38
10
Ω
R27
10
Ω
VOUT (CSN)
C30
1
μ
F
C16
3.3
μ
F
C35
1
μ
F
C29
1
μ
F
R24
10
Ω
VREG
V+
4
3
1
6
C31
0.1
μ
F
R28
301
Ω
1%
LXH
LXL
R30
2k
Ω
1%
D10
D9
D7
LXVDD
T2
C26
0.1
μ
F
REG9
REG5
R11
360
Ω
R3
2.2k
Ω
C17
0.33
μ
F
C24
1000pF
3
4
2
1
U2
OPTO_CAT
C27
0.15
μ
F
R19
475
Ω
VOUT
C22
2200pF
2kV
N4
4
2
3
1
6
7
5
8
C32
1
μ
F
V+
C23
1000pF
D4
C15
270
μ
F
4V
C14
270
μ
F
4V
C13
270
μ
F
4V
C33
1
μ
F
10V
SGND
R20
0.004
Ω
1%
R36
0.004
Ω
1%
VOUT
VOUT (CSN)
(CSP)
-VIN
R29
1
Ω
N5
DRVB
XFRMRH
3
2
1
D6
N1
+VIN
C25
0.047
μ
F
100V
+VIN
C12
1
μ
F
100V
C11
0.47
μ
F
100V
C10
0.47
μ
F
100V
D2
D2
XFRMRH
4
5
6
7
8
3
2
1
N3
R10
20
Ω
4
1
2
3
7
8
5
6
T1
1
6
4T
2T
10
8
PVIN
+VIN
R22
15k
Ω
R18
4.7
Ω
C21
4.7
μ
F
80V
D5
R17
0.027
Ω
1%
D3
+VIN
C34
330pF
XFRMRH
N2
8
3
4
6
7
2
1
5
R13
47
Ω
2
5
8T
R9
8.2
Ω
R14
270
Ω
RCOSC
SYNCOUT
RCFF
CON
CSS
COMP
FB
REG5
REG9
PVIN
STT
LXH
LXL
SYNCIN
FLTINT
STARTUP
UVLO
GND
AVIN
BST
DRVH
XFRMRH
DRVB
DRVDD
PGND
DRVL
CS
IC_PADDLE
1
2
3
4
5
6
7
8
9
10
11
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
29
MAX5051
U1
REG5
C1
100pF
R21
24.9k
Ω
1%
+VIN
C2
390pF
R25
100k
Ω
TP5
C5
4700pF
R15
31.6k
Ω
1%
D8
R16
10.5k
Ω
1%
REG5
C4
4.7
μ
F
REG9
C3
4.7
μ
F
PVIN
C6
0.1
μ
F
C18
1000pF
LXH
LXL
LXVDD
12
REG5
C19
1
μ
F
R27
10
Ω
LXVDD
ON/OFF
XFRMRH
DRVB
+VIN
C9
1
μ
F
REG9
C20
220pF
R8
8.2
Ω
C8
4.7
μ
F
R7
0
Ω
REG9
D1
+VIN
R6
1M
Ω
1%
R5
38.3k
Ω
1%
C7
0.22
μ
F
R4
1M
Ω
1%
R35
0
Ω
TP6
Figure 18. Schematic of a +48V Input, 3.3V at 15A Output, Synchronous Rectified, Isolated Power Supply
MAX5058/MAX5059
Parallelable Secondar
y-Side Synchr
onous Rectifier
Driver and Feedback-Generator Contr
oller ICs
______________________________________________________________________________________
23
60
65
75
70
85
90
80
95
04
6
2
8
10
12
14
LOAD CURRENT (A)
EFFICIENCY (%)
R20 = R26 = R36 = 0
Ω
Figure 19. Efficiency at Nominal 3.3V Output Voltage vs. Load
Current (48V Nominal Input Voltage)
1
0
2
4
3
6
7
5
8
04
6
2
8
10
12
14
LOAD CURRENT (A)
POWER DISSIPATION (W)
R20 = R26 = R36 = 0
Ω
Figure 20. Power Dissipation at Nominal 3.3V Output Voltage
vs. Load Current (48V Nominal Input Voltage)
4ms/div
R20 = R26 = R36 = 0
Ω
R
L
= 0.22
Ω
V
OUT
1V/div
I
LOAD
5A/div
Figure 21. Turn-On Transient at Full Load (Resistive Load)
V
OUT
1ms/div
V
OUT
100mV/div
I
LOAD
5A/div
R20 = R26 = R36 = 0
Ω
Figure 22. Output Voltage Response to Step Change in Load
Current (I
LOAD
from 50%, max to 75%, max)
MAX5058/MAX5059
Parallelable Secondar
y-Side Synchr
onous Rectifier
Driver and Feedback-Generator Contr
oller ICs
24
______________________________________________________________________________________
2
μ
s/div
V
OUT
50mV/div
R20 = R26 = R36 = 0
Ω
Figure 23. Output Voltage Ripple at +48V Nominal Input
Voltage and Full Load Current (Scope Bandwidth = 20MHz)
I
LOAD
10A/div
20ms/div
I
LOAD
10A/div
1ms/div
R20 = R26 = R36 = 0
Ω
Figure 24. Load Current (10A/div) as a Function of Time when
the Converter Attempts to Turn On into a 50m
Ω
Short Circuit
Chip Information
TRANSISTOR COUNT: 1762
PROCESS: BiCMOS
Pin Configuration
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
QSYNC
PGND
QREC
VDR
BUFIN
V
REG
VSO
V+
VP
CSP
CSN
CSO
VSP
VSN
INV
COMPV
I
REF
RMGU
RMGD
MRGD
MRGU
TSF
COMPS
SFP
SFN
GND
ZCN
ZCP
TSSOP
TOP VIEW
CONNECT EXPOSED PADDLE TO GND.
MAX5058AUI
MAX5059AUI
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P25
MAX5058EUI+T
Mfr. #:
Buy MAX5058EUI+T
Manufacturer:
Maxim Integrated
Description:
Gate Drivers Secondary Side Synch Rectifier Driver
Lifecycle:
New from this manufacturer.
Delivery:
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EMS
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MAX5059AUI+T
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