GS120/175T48 Family
120W/175W DC-DC CONVERTERS FAMILY
Type
GS120T48-3.3
GS120T48-3.3E
GS175T48-5
GS175T48-5E
GS175T48-12
GS175T48-12E
GS175T48-15
GS175T48-15E
V
i
38 to 60 V
38 to 60 V
38 to 60 V
38 to 60 V
V
o
3,35 V
5,075 V
12,0 V
15,0 V
I
o
35 A
35 A
15 A
12 A
FEATURES
UL, CSA, TUV approved
High output power (up to 175W)
High efficiency (82% typ. on GS175T48-5 mod-
ule)
Parallel operation with equal current sharing
Synchronization pin
Remote ON/OFF
Remote load voltage sense compensation
Output short-circuit protection
Undervoltage lock-out
Minimal overshoot during load transients
Output overvoltage protection
500V
DC
input to output isolation voltage
Internal input and output filtering
Softstart
PCB or chassis mountable
Optional additional finned heatsink
Mechanical dimensions 125
•
66,5
•
19 (4,92
•
2,62
•
0,75)
DESCRIPTION
The GS120/175T48family includes 120/175W DC-
DC converters used to generate fixed isolated out-
put voltages with an output current up to 35A from
a wide range input voltage (38 to 60V).
The suffix E Identifies the metric threading on the
planar heatsink (see fig. 1).
OPTION
Type
Ordering Number
HS01
Description
Additional finned heatsink
(See fig. 7)
Thermal Resistance
2.8°C/W
Dimensions
L
•
W
•
H mm (inches)
125
•
66.5
•
15
( 4.92
•
2.62
•
0.59)
June 1994
1/10
GS120/175T48 FAMILY
GS120T48-3.3ELECTRICAL CHARACTERISTICS
(T
amb
= 25°C unless otherwise specified)
Symbol
Vi
Viuv
li
lipk
lir
Parameter
Input Voltage
Input Undervoltage Lockout
Average Input Current
Inrush Transient Peak Current
Reflected Input Current
Test Conditions
Vo = 3.35V
Io = 0 to 35A
(Operating Conditions)
Vo = 3.35V
Io = 0 to 35A
Vi = 0 to 60V
Io = 35A
Vi = 60V
Io = 35A
Vi = 38 to 60V
BW = 5Hz to 20MHz
Io = 35A (See fig. 2)
Vi = 38 to 60V Io = 0 to 35A
Vi = 38 to 60V Io = 0 to 35A
Vien = 0V
Vi = 38 to 60V Io = 0 to 35A
Vien = open
Vi = 38 to 60V Io = 0A (No Load)
Vi = 38 to 60V Io = 0 to 35A
Vi = 38 to 60V Io = 0 to 35A
Vi = 38 to 60V Io = 0 to 35A
Vi = 38 to 60V Io = 0 to 35A
Vi = 38 to 60V Io = 35A
Vi = 38 to 60V Io = 35A
Vi = 38 to 60V
Vi = 48V
δI
o = 5A
slope = 0.1A/µs
Vi = 38 to 60V Vo = 3.35V
Vi = 48V
Vi = 48V
Vo = 0.2 to 0.5V
Vi = 48V
δI
o = 5A
slope = 0.1A/µs
Io = 35A
Vi = 48V
Vien = from high to low
Vi = 0 to 60V
Vien = low
Vis
fs
η
R th
Tcop
Tstg
Isolation Voltage
Switching Frequency
Efficiency
Thermal Resistance
Operating Case
Temperature Range
Storage Temperature Range
Vi = 38 to 60V Io = 0 to 35A
Vi = 38 to 60V Io = 35A
Case to Ambient
– 10
– 40
Io = 35A
3
500
160
76
175
77
5.2
+85
+105
200
0
36
3.25
3.30
3.28
4
8
1.5
3.35
3.35
3.35
4.5
20
50
0
Min
38
32
Typ
48
34
Max
60
36
4.2
0.2
20
Unit
VDC
VDC
A
A s
mApp
2
Vien
lien
Viinh
Pi
Vo
Vost
Vots
Vol
Vor
Von
∆V
o
δV
o
Io
Iol
Iosc
ts
ton
Enable Input Voltage
Enable Input Current
Inhibit Voltage
Input Power
Total Output Voltage Regulation
Short-term Output
Voltage Regulation
Total Static Tolerance
Output Overvoltage
Limit Initiation
Output Ripple Voltage
Output Noise Voltage
Total Remote Sense
Compensation
Peak Load Transient Response
Output Current
Overcurrent Limit Initiation
Shortcircuit Output Current
Load Transient Settling Time
Turn-on Time
1.2
-1
18
2
3.45
3.40
3.42
5.2
30
80
0.6
60
35
39
51
200
5
10
V
mA
V
W
V
V
V
VDC
mVpp
mVpp
V
mVp
A
A
A
µs
ms
V
kHz
%
°C/W
°C
°C
2/10
GS120/175T48 FAMILY
GS175T48-5 ELECTRICAL CHARACTERISTICS
(T
amb
= 25°C unless otherwise specified)
Symbol
Vi
Viuv
li
lipk
lir
Parameter
Input Voltage
Input Undervoltage Lockout
Average Input Current
Inrush Transient Peak Current
Reflected Input Current
Test Conditions
Vo = 5.075V Io = 0 to 35A
(Operating Conditions)
Vo = 5.075V
Io = 0 to 35A
Vi = 0 to 60V
Vi = 60V
Io = 35A
Vi = 38 to 60V
BW = 5Hz to 20MHz
Io = 35A (See fig. 2)
Vi = 38 to 60V Io = 0 to 35A
Vi = 38 to 60V Io = 0 to 35A
Vien = 0V
Vi = 38 to 60V Io = 0 to 35A
Vien = open
Vi = 38 to 60V Io = 0A (No Load)
Vi = 38 to 60V Io = 0 to 35A
Vi = 38 to 60V Io = 0 to 35A
Vi = 38 to 60V Io = 0 to 35A
Vi = 38 to 60V Io = 0 to 35A
Vi = 38 to 60V Io = 35A
Vi = 38 to 60V Io = 35A
Vi = 48V
δI
o = 5A
slope = 0.1A/µs
Vi = 38 to 60V Vo = 5.075V
Vi = 48V
Vi = 48V
Vo = 0.2 to 0.5V
Vi = 48V
δI
o = 5A
slope = 0.1A/µs
Vi = 48V
Io = 35A
Vien = from high to low
Vi = 0 to 60V
Vien = low
Vis
fs
η
R th
Tcop
Tstg
Isolation Voltage
Switching Frequency
Efficiency
Thermal Resistance
Operating Case
Temperature Range
Storage Temperature Range
Vi = 38 to 60V Io = 0 to 35A
Vi = 38 to 60V Io = 35A
Case to Ambient
– 10
– 40
Io = 35A
3
500
160
81
175
82
5.2
+85
+105
200
0
36
4.94
5.002
4.97
6
8
1.5
5.075
5.075
5.075
6.3
20
50
0
Io = 35A
Min
38
32
Typ
48
34
Max
60
36
6.1
0.2
30
Unit
VDC
VDC
A
A
2
s
mApp
Vien
lien
Viinh
Pi
Vo
Vost
Vots
Vol
Vor
Von
∆V
o
δV
o
Io
Iol
Iosc
ts
ton
Enable Input Voltage
Enable Input Current
Inhibit Voltage
Input Power
Total Output Voltage Regulation
Short-term Output
Voltage Regulation
Total Static Tolerance
Output Overvoltage
Limit Initiation
Output Ripple Voltage
Output Noise Voltage
1.2
-1
18
2
5.21
5.148
5.18
7
30
80
0.6
100
35
39
51
250
5
10
V
mA
V
W
V
V
V
VDC
mVpp
mVpp
V
mVp
A
A
A
µs
ms
Total Remote Sense Compensation Vi = 38 to 60V
Peak Load Transient Response
Output Current
Overcurrent Limit Initiation
Shortcircuit Output Current
Load Transient Settling Time
Turn-on Time
V
kHz
%
°C/W
°C
°C
3/10
GS120/175T48 FAMILY
GS175T48-12 ELECTRICAL CHARACTERISTICS
(T
amb
= 25°C unless otherwise specified)
Symbol
Vi
Viuv
li
lipk
lir
Parameter
Input Voltage
Input Undervoltage Lockout
Average Input Current
Inrush Transient Peak Current
Reflected Input Current
Test Conditions
Vo = 12V
Io = 0 to 15A
(Operating Conditions)
Vo = 12V
Io = 0 to 15A
Vi = 0 to 60V
Vi = 60V
Io = 15A
Vi = 38 to 60V
BW = 5Hz to 20MHz
Io = 15A (See fig. 2)
Vi = 38 to 60V Io = 0 to 15A
Vi = 38 to 60V Io = 0 to 15A
Vien = 0V
Vi = 38 to 60V Io = 0 to 15A
Vien = open
Vi = 38 to 60V Io = 0A (No Load)
Vi = 38 to 60V Io = 0 to 15A
Vi = 38 to 60V Io = 0 to 15A
Vi = 38 to 60V Io = 0 to 15A
Vi = 38 to 60V Io = 0 to 15A
Vi = 38 to 60V Io = 15A
Vi = 38 to 60V Io = 15A
Vi = 38 to 60V
Vi = 48V
δI
o = 3A
slope = 0.2A/µs
Vi = 38 to 60V Vo = 12V
Vi = 48V
Vi = 48V
Vi = 48V
δI
o = 3A
slope = 0.2A/µs
Vi = 48V
Io = 15A
Vien = from high to low
Vi = 0 to 60V
Vien = low
Vis
fs
η
R th
Tcop
Tstg
Isolation Voltage
Switching Frequency
Efficiency
Thermal Resistance
Operating Case
Temperature Range
Storage Temperature Range
Vi = 38 to 60V Io = 0 to 15A
Vi = 38 to 60V Io = 15A
Case to Ambient
– 10
– 40
Io = 15A
3
500
160
84
175
86
5.2
+85
+105
200
0
16
11.4
11.76
11.64
13.2
8
1.5
12.0
12.0
12.0
14
35
60
0
Io = 15A
Min
38
32
Typ
48
34
Max
60
36
5.5
0.2
20
Unit
VDC
VDC
A
A
2
s
mApp
Vien
lien
Viinh
Pi
Vo
Vost
Vots
Vol
Vor
Von
∆V
o
δV
o
Io
Iol
Iosc
ts
ton
Enable Input Voltage
Enable Input Current
Inhibit Voltage
Input Power
Total Output Voltage Regulation
Short-term Output
Voltage Regulation
Total Static Tolerance
Output Overvoltage
Limit Initiation
Output Ripple Voltage
Output Noise Voltage
Total Remote Sense
Compensation
Peak Load Transient Response
Output Current
Overcurrent Limit Initiation
Shortcircuit Output Current
Load Transient Setting Time
Turn-on Time
1.2
-1
18
2
12.6
12.24
12.36
15
70
120
0.6
200
15
19
25
300
5
10
V
mA
V
W
V
V
V
VDC
mVpp
mVpp
V
mVp
A
A
A
µs
ms
V
kHz
%
°C/W
°C
°C
4/10
GS120/175T48 FAMILY
GS175T48-15 ELECTRICAL CHARACTERISTICS
(T
amb
= 25°C unless otherwise specified)
Symbol
Vi
Viuv
li
lipk
lir
Vien
lien
Viinh
Pi
Vo
Vost
Vots
Vol
Vor
Von
∆V
o
δV
o
Io
Iol
Iosc
ts
ton
Parameter
Input Voltage
Input Undervoltage Lockout
Average Input Current
Inrush Transient Peak Current
Reflected Input Current
Enable Input Voltage
Enable Input Current
Inhibit Voltage
Input Power
Total Output Voltage Regulation
Short-term Output
Voltage Regulation
Total Static Tolerance
Output Overvoltage
Limit Initiation
Output Ripple Voltage
Output Noise Voltage
Total Remote Sense
Compensation
Peak Load Transient Response
Output Current
Overcurrent Limit Initiation
Shortcircuit Output Current
Load Transient Settling Time
Turn-on Time
Test Conditions
Vo = 15V
Io = 0 to 12A
(Operating Conditions)
Vo = 15V
Io = 0 to 12A
Vi = 0 to 60V
Vi = 60V
Io = 12A
Vi = 38 to 60V Io = 12A
Vi = 38 to 60V Io = 0 to 12A
Vi = 38 to 60V Io = 0 to 12A
Vien = 0V
Vi = 38 to 60V Io = 0 to 12A
Vien = open
Vi = 38 to 60V Io = 0A (No Load)
Vi = 38 to 60V Io = 0 to 12A
Vi = 38 to 60V Io = 0 to 12A
Vi = 38 to 60V Io = 0 to 12A
Vi = 38 to 60V Io = 0 to 12A
Vi = 38 to 60V Io = 12A
Vi = 38 to 60V Io = 12A
Vi = 38 to 60V
Vi = 48V
δI
o = 3A
slope = 0.2A/µs
Vi = 38 to 60V Vo = 15V
Vi = 48V
Vi = 48V
Vo = 0.2 to 0.5V
Vi = 48V
δI
o = 3A
slope = 0.2A/µs
Vi = 48V
Io = 12A
Vien = from high to low
Vi = 0 to 60V
Vien = low
Vis
fs
η
R th
Tcop
Tstg
Isolation Voltage
Switching Frequency
Efficiency
Thermal Resistance
Operating Case
Temperature Range
Storage Temperature Range
Vi = 38 to 60V Io = 0 to 12A
Vi = 38 to 60V Io = 12A
Case to Ambient
– 10
– 40
Io = 12A
3
500
160
86
175
88
5.2
+85
+105
200
0
13
14.25
14.7
14.55
16.5
8
1.5
15.0
15.0
15.0
17
45
75
0
Io = 12A
Min
38
32
Typ
48
34
Max
60
36
5.5
0.2
20
1.2
-1
18
2
15.75
15.3
15.45
18
90
150
0.6
200
12
16
21
300
5
10
V
kHz
%
°C/W
°C
°C
Unit
VDC
VDC
A
A
2
s
mApp
V
mA
V
W
V
V
V
VDC
mVpp
mVpp
V
mVp
A
A
A
µs
ms
5/10
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