Datasheet GS175T48-15, GS175T48-12, GS175T48-5, GS120T48-3.3 Datasheet (SGS Thomson Microelectronics)

GS120/175T48 Family

120W/175W DC-DC CONVERTERS FAMILY

Type V

GS120T48-3.3
GS120T48-3.3E

GS175T48-5
GS175T48-5E

GS175T48-12
GS175T48-12E

GS175T48-15
GS175T48-15E

i

38 to 60 V 3,35 V 35 A

38 to 60 V 5,075 V 35 A

38 to 60 V 12,0 V 15 A

38 to 60 V 15,0 V 12 A

V

o

I

FEATURES

UL, CSA, TUVapproved
High outputpower (up to 175W)
High efficiency(82% typ. on GS175T48-5mod­ule)
Paralleloperation with equal current sharing
Synchronizationpin
Remote ON/OFF
Remote load voltagesense compensation
Output short-circuitprotection
Undervoltagelock-out
Minimal overshootduring load transients
Output overvoltageprotection
500V

inputto output isolationvoltage

DC

Internal input and output filtering
Softstart
PCB or chassismountable
Optional additional finned heatsink
Mechanical dimensions 125 • 66,5 • 19 (4,92 •
2,62 • 0,75)

o

DESCRIPTION

The GS120/175T48familyincludes120/175WDC­DC convertersused to generate fixed isolatedout­put voltages with an outputcurrent 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

June 1994 1/10

Description Thermal Resistance

Additional finned heatsink

(See fig. 7)

2.8°C/W

Dimensions

L • W• H mm (inches)

125 • 66.5 • 15

( 4.92 • 2.62 • 0.59)

GS120/175T48 FAMILY

GS120T48-3.3ELECTRICAL CHARACTERISTICS (T

Symbol Parameter Test Conditions Min Typ Max Unit

Input Voltage Vo= 3.35V Io= 0 to 35A

V

i

V

l

ipk

V

l

ien

V

V

V

V

V

V

V

∆V

δV

I

I

osc

t

V

R

T

cop

T

Input Undervoltage Lockout Vo= 3.35V

iuv

AverageInput Current Vi= 0 to 60V

l

i

Inrush Transient Peak Current Vi= 60V

Reflected Input Current Vi= 38 to 60V

l

ir

Enable Input Voltage Vi= 38 to 60V Io= 0 to 35A

ien

Enable Input Current Vi= 38 to 60V Io= 0 to 35A

Inhibit Voltage Vi= 38 to 60V Io= 0 to 35A

iinh

Input Power Vi= 38 to 60V Io= 0A (No Load)

P

i

Total Output Voltage Regulation Vi= 38 to 60V Io= 0 to 35A

o

Short-term Output

ost

VoltageRegulation
Total Static Tolerance Vi= 38 to 60V Io= 0 to 35A

ots

Output Overvoltage

ol

Limit Initiation
Output Ripple Voltage Vi= 38 to 60V Io= 35A

or

Output Noise Voltage Vi= 38 to 60V Io= 35A

on

Total RemoteSense

o

Compensation
Peak Load Transient Response Vi= 48V δIo=5A

o

Output Current Vi= 38 to 60V Vo= 3.35V

I

o

OvercurrentLimit Initiation Vi= 48V

ol

Shortcircuit Output Current Vi= 48V

LoadTransient Settling Time Vi= 48V δIo=5A

t

s

Turn-onTime Vi= 48V Io= 35A

on

IsolationVoltage

is

Switching Frequency Vi= 38 to 60V Io= 0 to 35A

f

s

η Efficiency V

Thermal Resistance Case toAmbient

th

Operating Case
Temperature Range

Storage Temperature Range

stg

(Operating Conditions)

Io= 0 to 35A

Io= 35A

Io= 35A

BW = 5Hz to 20MHz
Io= 35A (See fig. 2)

V

=0V

ien

Vien = open

Vi= 38 to 60V Io= 0 to 35A

Vi= 38 to 60V Io= 0 to 35A

Vi= 38 to 60V

slope = 0.1A/µs

Vo= 0.2 to 0.5V

slope = 0.1A/µs

V

= from high to low

ien

V

= 0 to 60V Io= 35A

i

V

= low

ien

= 38 to 60V Io= 35A

i

=25°Cunless otherwisespecified)

amb

38 48 60 V

32 34 36 V

0 1.2 V

818V

1.5 2 W

3.25 3.35 3.45 V

3.30 3.35 3.40 V

3.28 3.35 3.42 V
4 4.5 5.2 V

20 30 mVpp
50 80 mVpp

035A

36 39 A

310

500 V
160 175 200 kHz

76 77 %

5.2 °C/W

– 10 +85 °C

– 40 +105 °C

4.2 A

0.2 A

20 mApp

-1 mA

0.6 V

60 mVp

51 A

200 µs

5ms

DC

DC

2

DC

s

2/10

GS120/175T48 FAMILY

GS175T48-5ELECTRICAL CHARACTERISTICS (T

Symbol

Input Voltage Vo= 5.075V Io= 0 to 35A

V

i

V

l

ipk

V

l

ien

V

V

V

V

V

V

V

∆V

δV

I

I

osc

t

V

R

T

cop

T

Input Undervoltage Lockout Vo= 5.075V

iuv

AverageInput Current Vi= 0 to 60V Io= 35A

l

i

Inrush Transient Peak Current Vi= 60V

Reflected Input Current Vi= 38 to 60V

l

ir

Enable Input Voltage Vi= 38 to 60V Io= 0 to 35A

ien

Enable Input Current Vi= 38 to 60V Io= 0 to 35A

Inhibit Voltage Vi= 38 to 60V Io= 0 to 35A

iinh

Input Power Vi= 38 to 60V Io= 0A (No Load)

P

i

Total Output Voltage Regulation Vi= 38 to 60V Io= 0 to 35A

o

Short-term Output

ost

VoltageRegulation
Total Static Tolerance Vi= 38 to 60V Io= 0 to 35A

ots

Output Overvoltage

ol

Limit Initiation
Output Ripple Voltage Vi= 38 to 60V Io= 35A

or

Output Noise Voltage Vi= 38 to 60V Io= 35A

on

Total RemoteSense Compensation Vi= 38 to 60V

o

Peak Load Transient Response Vi= 48V δIo=5A

o

Output Current Vi= 38 to 60V Vo= 5.075V

I

o

OvercurrentLimit Initiation Vi= 48V

ol

Shortcircuit Output Current Vi= 48V

LoadTransient Settling Time Vi= 48V δIo=5A

t

s

Turn-onTime Vi= 48V Io= 35A

on

IsolationVoltage

is

Switching Frequency Vi= 38 to 60V Io= 0 to 35A

f

s

η Efficiency V

Thermal Resistance Case toAmbient

th

Operating Case
Temperature Range

Storage Temperature Range

stg

Parameter Test Conditions Min Typ Max Unit

(Operating Conditions)

Io= 0 to 35A

Io= 35A

BW = 5Hz to 20MHz
Io= 35A (See fig. 2)

V

=0V

ien

Vien = open

Vi= 38 to 60V Io= 0 to 35A

Vi= 38 to 60V Io= 0 to 35A

slope = 0.1A/µs

Vo= 0.2 to 0.5V

slope = 0.1A/µs

V

= from high to low

ien

V

= 0 to 60V Io= 35A

i

V

= low

ien

= 38 to 60V Io= 35A

i

=25°C unlessotherwise specified)

amb

38 48 60 V

32 34 36 V

0 1.2 V

818V

4.94 5.075 5.21 V

5.002 5.075 5.148 V

4.97 5.075 5.18 V
6 6.3 7 V

035A

36 39 A

310

500 V
160 175 200 kHz

81 82 %

– 10 +85 °C

– 40 +105 °C

DC

DC

6.1 A

2

0.2 A

30 mApp

-1 mA

1.5 2 W

20 30 mVpp
50 80 mVpp

0.6 V

100 mVp

51 A

250 µs

5ms

5.2 °C/W

s

DC

3/10

GS120/175T48 FAMILY

GS175T48-12ELECTRICAL CHARACTERISTICS (T

Symbol

Input Voltage Vo= 12V Io= 0 to 15A

V

i

V

l

ipk

V

l

ien

V

V

V

V

V

V

V

∆V

δV

I

I

osc

t

V

R

T

cop

T

Input Undervoltage Lockout Vo= 12V

iuv

AverageInput Current Vi= 0 to 60V Io= 15A

l

i

Inrush Transient Peak Current Vi= 60V

Reflected Input Current Vi= 38 to 60V

l

ir

Enable Input Voltage Vi= 38 to 60V Io= 0 to 15A

ien

Enable Input Current Vi= 38 to 60V Io= 0 to 15A

Inhibit Voltage Vi= 38 to 60V Io= 0 to 15A

iinh

Input Power Vi= 38 to 60V Io= 0A (No Load)

P

i

Total Output Voltage Regulation Vi= 38 to 60V Io= 0 to 15A

o

Short-term Output

ost

VoltageRegulation
Total Static Tolerance Vi= 38 to 60V Io= 0 to 15A

ots

Output Overvoltage

ol

Limit Initiation
Output Ripple Voltage Vi= 38 to 60V Io= 15A

or

Output Noise Voltage Vi= 38 to 60V Io= 15A

on

Total RemoteSense

o

Compensation
Peak Load Transient Response Vi= 48V δIo=3A

o

Output Current Vi= 38 to 60V Vo= 12V

I

o

OvercurrentLimit Initiation Vi= 48V

ol

Shortcircuit Output Current Vi= 48V
LoadTransient Setting Time Vi= 48V δIo=3A

t

s

Turn-onTime Vi= 48V Io= 15A

on

IsolationVoltage

is

Switching Frequency Vi= 38 to 60V Io= 0 to 15A

f

s

η Efficiency V

Thermal Resistance Case toAmbient

th

Operating Case
Temperature Range

Storage Temperature Range

stg

Parameter Test Conditions Min Typ Max Unit

(Operating Conditions)

Io= 0 to 15A

Io= 15A

BW = 5Hz to 20MHz
Io= 15A (See fig. 2)

V

=0V

ien

Vien = open

Vi= 38 to 60V Io= 0 to 15A

Vi= 38 to 60V Io= 0 to 15A

Vi= 38 to 60V

slope = 0.2A/µs

slope = 0.2A/µs

V

= from high to low

ien

V

= 0 to 60V Io= 15A

i

V

= low

ien

= 38 to 60V Io= 15A

i

=25°C unless otherwisespecified)

amb

38 48 60 V

32 34 36 V

0 1.2 V

818V

1.5 2 W

11.4 12.0 12.6 V

11.76 12.0 12.24 V

11.64 12.0 12.36 V

13.2 14 15 V

015A

16 19 A

310

500 V
160 175 200 kHz

84 86 %

5.2 °C/W

– 10 +85 °C

– 40 +105 °C

DC

DC

5.5 A

2

0.2 A

20 mApp

-1 mA

35 70 mVpp
60 120 mVpp

0.6 V

200 mVp

25 A

300 µs

5ms

s

DC

4/10

GS120/175T48 FAMILY

GS175T48-15ELECTRICAL CHARACTERISTICS (T

Symbol

Input Voltage Vo= 15V Io= 0 to 12A

V

i

V

l

ipk

V

l

ien

V

V

V

V

V

V

V

∆V

δV

I

I

osc

t

V

R

T

cop

T

Input Undervoltage Lockout Vo= 15V

iuv

AverageInput Current Vi= 0 to 60V Io= 12A

l

i

Inrush Transient Peak Current Vi= 60V

Reflected Input Current Vi= 38 to 60V Io= 12A

l

ir

Enable Input Voltage Vi= 38 to 60V Io= 0 to 12A

ien

Enable Input Current Vi= 38 to 60V Io= 0 to 12A

Inhibit Voltage Vi= 38 to 60V Io= 0 to 12A

iinh

Input Power Vi= 38 to 60V Io= 0A (No Load)

P

i

Total Output Voltage Regulation Vi= 38 to 60V Io= 0 to 12A

o

Short-term Output

ost

VoltageRegulation
Total Static Tolerance Vi= 38 to 60V Io= 0 to 12A

ots

Output Overvoltage

ol

Limit Initiation
Output Ripple Voltage Vi= 38 to 60V Io= 12A

or

Output Noise Voltage Vi= 38 to 60V Io= 12A

on

Total RemoteSense

o

Compensation
Peak Load Transient Response Vi= 48V δIo=3A

o

Output Current Vi= 38 to 60V Vo= 15V

I

o

OvercurrentLimit Initiation Vi= 48V

ol

Shortcircuit Output Current Vi= 48V

LoadTransient Settling Time Vi= 48V δIo=3A

t

s

Turn-onTime Vi= 48V Io= 12A

on

IsolationVoltage

is

Switching Frequency Vi= 38 to 60V Io= 0 to 12A

f

s

η Efficiency V

Thermal Resistance Case toAmbient

th

Operating Case
Temperature Range

Storage Temperature Range

stg

Parameter Test Conditions Min Typ Max Unit

(Operating Conditions)

Io= 0 to 12A

Io= 12A

V

=0V

ien

Vien = open

Vi= 38 to 60V Io= 0 to 12A

Vi= 38 to 60V Io= 0 to 12A

Vi= 38 to 60V

slope = 0.2A/µs

Vo= 0.2 to 0.5V

slope = 0.2A/µs

V

= from high to low

ien

V

= 0 to 60V Io= 12A

i

V

= low

ien

= 38 to 60V Io= 12A

i

=25°C unless otherwisespecified)

amb

38 48 60 V

32 34 36 V

0 1.2 V

818V

1.5 2 W

14.25 15.0 15.75 V

14.7 15.0 15.3 V

14.55 15.0 15.45 V

16.5 17 18 V

012A

13 16 A

310

500 V
160 175 200 kHz

86 88 %

5.2 °C/W

– 10 +85 °C

– 40 +105 °C

DC

DC

5.5 A

2

0.2 A

20 mApp

-1 mA

45 90 mVpp
75 150 mVpp

0.6 V

200 mVp

21 A

300 µs

5ms

s

DC

5/10

GS120/175T48 FAMILY

CONNECTION DIAGRAM AND MECHANICAL DATA
Figure1.

Package T.Dimensions in mm (inches).

PIN DESCRIPTION

Pin Function Description

1-IN
2+IN

3 ON/OFF

4 CASE
5 SYNC
6 PARALLEL

7 + SENSE

8 - SENSE

9,10 - OUT

11,12 + OUT

6/10

Negative input voltage.
Positive input voltage.Unregulated input voltage (typically 48V) mustbeapplied between

pin 1-2.
The converter is ON (Enable) when the voltage applied to this pinwith reference to pin 1 is

lowerthan 1.2V (seeVien). The converter is OFF (Inhibit)for a control voltage in therange
of 8 to 18V. When the pin is unconnected the converter is OFF (Inhibit).

Case connection pin.
Synchronization pin. See figures 3,4, 5, 6. Open when not used.
Parallel output. See figures 3, 4, 5, 6. Open when notused.
Senses the remote load high side. To be connected to pin 11,12when remote sense is not

used.
Senses the remote load return. To be connected to pin 9,10 when remote sense is not

used. In parallel configuration, take care to connect all -S pins together (see figures 3,4,5,6).
Fixed output voltagereturn.
Fixed output voltage.

GS120/175T48 FAMILY

USER NOTES
Reflected Input Current

The reflectedinput current measurement(lir, see ElectricalCharacteristics) is performed according to the
test set-up of fig. 2.

Figure2.

Softstart

To avoid heavy inrush current the output voltage
risetime is 10msmaximuminany conditionof load.

Remote Sensing

The remote voltage sense compensation range is
for a total drop of 0.6V equallysharedbetween the
load connectingwires.

It is a goodpractice to shield the sensing wires to
avoid oscillations.

See the connectiondiagram on figures 3, 4, 5, 6.

Remote ON/OFF

The module is controlled by the voltage applied
between the ON/OFFpin and -IN pin.

The converter is ON (Enable) when the voltage
appliedis lower than 1.2 V (see Vienon Electrical
Characteristics).

The converter is OFF (Inhibit) for a controlvoltage
in the range of 8 to 18V (see Viinh).

When the pinis unconnectedthe converterisOFF.
Maximumsinking current is 1mA.

Module Protection

The module is protected against occasional and
permanent shortcircuits of the output pins to
ground, as well as againstoutputcurrentoverload.
It uses a current limiting protectioncircuitry, avoid­ing latch-upproblems with certain type of loads.

Acrowbaroutputovervoltageprotectionisactivated
when the output voltage exceeds the specified
values (see ElectricalCharacteristics).

Parallel Operation

To increase available output regulated power, the
module features the parallelconnection possibility
with equalcurrentsharingand maximumdeviation
of 10% (two modules in parallel).

See the connectiondiagramon figures3, 4, 5, 6.

7/10

GS120/175T48 FAMILY

Figure3. Figure 4.

Figure 5.

Finnedheatsink option

An additional finned heatsink is available(type or­deringnumberHS01) to allowtheuser to decrease
the total thermal resistance of the module to a

Figure 6.

typical value of 2.8 °C/W. The heatsinkis suitable
both for standard (4-40 UNC threading) and E
version (M3 threading); screw length in the range
of 6 to 8 mm (0.24 to 0.32”). See fig. 7.

8/10

Figure7. - HS01 Heatsink.

GS120/175T48 FAMILY

Dimensions in mm (inches).

Thermal Characteristics

Followingfigures showthebehaviourat stillair and
forced ventilation operation of the GS175T48-5
module (typical efficiency 82%) without

Figure8. - GS175T48-5 with stadard flat heatsink.

(fig.8)andwith theadditionalfinnedHS01heatsink
(fig. 9)

9/10

GS120/175T48 FAMILY

Figure9. - GS175T48-5 with additional HS01 finned heatsink

Safety approvals

Theconverter is agency certifiedto thefollowingsafety requirements.

Agency Requirements License Number

UL UL-STD-1950 E141284

CSA

TUV

 UL is a registered trademark of UNDERWRITERS LABORATORIES inc.
 CSA isa registered trademark of CANADIAN STANDARDSASSOCIATION.
 TUV is a registered trademarkof TUV Rheinland.

Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No
license is granted by implicationor otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification mentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronics productsare not authorized foruse ascritical components in life supportdevices orsystems withoutexpress
written approvalof SGS-THOMSON Microelectronics.

 1994 SGS-THOMSON Microelectronics – All Rights Reserved

 UL is a registered trademark of UNDERWRITERS LABORATORIESinc.

 CSA is a registered trademark of CANADIAN STANDARDS ASSOCIATION.

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CSA-STD-C22.2 No.234

(level 3)

EN 60950

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LR 99794-2

R 9272137

10/10