For technical support and more information, see inside back cover or visit www.ti.com/powertrends
Standard Application
15W Output Power
(1)
Input Voltage Range:
36V to 75V
1500 VDC Isolation
Low-Profile
Current Limit
Short-Circuit Protection
Over-Temperature Shutdown
UL1950 recognized
CSA 22.2 950 certified
Meets EN60950
Pin-Out Information
Ordering Information
Through-Hole
PT4101A = 5 Volts
PT4102A = 12 Volts
PT4103A = 15 Volts
(1)
PT4110A = 3.3 Volts
PT4117A = 5.2 Volts
Surface Mount
PT4101C = 5 Volts
PT4102C = 12 Volts
PT4103C = 15 Volts
(1)
PT4110C = 3.3 Volts
PT4117C = 5.2 Volts
(For dimensions and PC
board layout, see Package
Style 710.)
Pin Function
1
Remote
ON/OFF
2
-V
in
3
+V
in
4
-V
out
5
+V
out
6
Do not connect
Specifications
Characteristics
PT4100--48V SERIES
(T
a
=25
C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
I
o
Over V
in
range
V
o
= 3.3V
0
--
4.0
(1)
V
o
= 5V
0
--
3.0
A
V
o
= 12V
0
--
1.25
V
o
= 15V
0
--
1.0
On/Off Standby Current
I
in standby
V
in
= 48V, Pin 1 = -V
in
--
7
10
mA
Short Circuit Current
I
sc
V
in
= 48V
V
o
5.2V
--
5.5
--
V
o
= 12V
--
3.5
--
A
V
o
= 15V
--
2.0
--
Inrush Current
I
ir
V
in
= 48V @ max I
o
--
0.6
1.0
A
t
ir
On start-up
--
1.0
5.0
mSec
Input Voltage Range
V
in
I
o
= 0.1 to max I
o
36.0
48.0
75.0
V
Output Voltage Tolerance
V
o
Over V
in
Range
T
A
= -40C to +85C
--
1.0
2.0
%V
o
Line Regulation
Reg
line
Over V
in
range @ max I
o
--
0.2
1.0
%V
o
Load Regulation
Reg
load
10% to 100% of I
o
max
--
0.4
1.0
%V
o
V
o
Ripple/Noise
V
n
V
in
=48V, I
o
=4.0A,
V
o
=3.3V
--
70
90
V
in
=48V, I
o
=3.0A,
V
o
=5V
--
75
100
mV
pp
V
in
=48V, I
o
=1.25A,
V
o
=12V
--
120
150
V
in
=48V, I
o
=1.0A,
V
o
=15V
--
100
200
Transient Response
t
tr
50% load change
--
100
200
Sec
V
o
over/undershoot
--
3.0
5.0
%V
o
Efficiency
V
in
=48V, I
o
=4.0A,
V
o
= 3.3V
--
75
--
V
in
=48V, I
o
=3.0A,
V
o
= 5V
--
80
--
%
V
in
=48V, I
o
=1.25A,
V
o
=12V
--
81
--
V
in
=48V, I
o
=1A,
V
o
=15V
--
82
--
Switching Frequency
o
Over V
in
and I
o
,
V
o
5.2V
800
850
900
kHz
V
o
=12V/15V
600
650
700
Recommended Operating
T
a
V
in
= 48V @ max I
o
-40
--
+85
(2)
Temperature Range
Free air convection, (40-60LFM)
C
PT4110 with 200 LFM airflow
0
--
+70
(1)
Thermal Resistance
ja
Free Air Convection, (40-60LFM)
--
14
--
C/W
Case Temperature
T
c
@ Thermal shutdown
--
--
100
C
Storage Temperature
T
s
--
-40
--
110
C
Mechanical Shock
--
Per Mil-STD-202F, Method 213B,
--
50
--
G's
6mS, Half-sine, mounted to a PCB
Mechanical Vibration
--
Per Mil-STD-202F, Method 204D,
--
10
--
G's
10-500Hz, Soldered in a PCB
Weight
--
--
--
28
--
grams
Isolation
--
--
1500
--
--
V
Capacitance
--
--
--
1100
--
pF
Resistance
--
--
10
--
--
M
Flammability
--
Materials meet UL 94V-0
Remote On/Off
On
(3)
Referenced to V
in
2.5
7.0
V
Off
0
0.8
Notes: (1) The PT4110 is limited to 13.2W output over the temperature range of 070C with 200LFM airflow.
(2) See thermal derating curves
(3) If pin 2 is left open, the converter will operate when input power is applied
PT4100--48V
15 Watt Isolated DC-DC Converter
SLTS021A
(Revised 1/16/2001)
The PT4100--48V series of dc/dc
converters provide up 18 Watts/in
3
of
isolated power in a single low-profile
module. Designed to operate from a
standard 48V telecom bus, these modules
employ switching frequencies of up to
850kHz, planar magnetics, and surface-
mount construction. They are designed
for Telecom, Industrial, Computer, Medical,
and other distributed power applications
that require input-to-output isolation.
+Vout
-Vout
-Vin
+Vin
3
2
4
5
On/Off
1
PT4100
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
Typical Characteristics
0
0.5
1
1.5
2
2.5
3
36
40
44
48
52
56
60
64
68
72
Note A:
All data listed in the above graphs, except for derating data, has been developed from actual products tested at 25C. This data is considered typical data for the DC-DC Converter.
Note B:
Thermal derating graphs are developed in free air convection cooling of 40-60 LFM.
PT4102, 12.0 VDC
(See Note A.)
PT4103, 15.0 VDC
(See Note A.)
Efficiency vs Output Current
Efficiency vs Output Current
Efficiency vs Output Current
Ripple vs Output Current
Ripple vs Output Current
Ripple vs Output Current
Thermal Derating (T
a
)
(See Note B.)
Thermal Derating (T
a
)
(See Note B.)
Thermal Derating (T
a
)
(See Note B.)
Power Dissipation vs Output Current
Power Dissipation vs Output Current
Power Dissipation vs Output Current
PT4101, 5.0 VDC
(See Note A.)
Efficiency - %
Ripple-(mV)
Iout-(Amps)
PD-(W
atts)
Efficiency - %
Efficiency - %
Ripple-(mV)
Ripple-(mV)
Iout-(Amps)
Iout-(Amps)
PD-(W
atts)
PD-(W
atts)
Iout-(Amps)
Iout-(Amps)
Iout-(Amps)
Iout-(Amps)
Iout-(Amps)
Vin-(Volts)
Vin-(Volts)
Vin-(Volts)
Iout-(Amps)
Iout-(Amps)
Iout-(Amps)
85
70
Iout-(Amps)
40
50
60
70
80
90
100
0
0.5
1
1.5
2
2.5
3
36V
48V
60V
72V
Vin
40
50
60
70
80
90
100
0.25
0.5
0.75
1
1.25
36V
48V
60V
72V
Vin
40
50
60
70
80
90
100
0.25
0.5
0.75
1
36V
48V
60V
72V
Vin
0
20
40
60
80
100
120
0.25
0.5
0.75
1
72V
60V
48V
36V
Vin
0
20
40
60
80
100
120
0.25
0.5
0.75
1
1.25
72V
60V
48V
36V
Vin
0
20
40
60
80
100
120
0
0.5
1
1.5
2
2.5
3
72V
60V
48V
36V
Vin
0
0.25
0.5
0.75
1
1.25
36
40
44
48
52
56
60
64
68
72
85
70
0
0.25
0.5
0.75
1
36
40
44
48
52
56
60
64
68
72
85
70
0
1
2
3
4
5
0.25
0.5
0.75
1
72V
60V
48V
36V
Vin
0
1
2
3
4
5
0.25
0.5
0.75
1
1.25
72V
60V
48V
36V
Vin
0
1
2
3
4
5
0
0.5
1
1.5
2
2.5
3
72V
60V
48V
36V
Vin
PT4100--48V
15 Watt Isolated DC-DC Converter
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Copyright
2001, Texas Instruments Incorporated
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