P T 4 2 / 4 3 0 0
Wide Input Voltage Range:
38V to 72V
83% Efficiency
1,500 VDC Isolation
18 Pin DIP Package
3.5 Million Hour MTBF
Meets FCC/EN55022 Class A
UL and CSA approved
No External Components Required
Adjustable Output Voltage
Power Trends' PT4200 series of isolated
DC to DC converters advance the state-of-the-
art for board-mounted converters by employing
high switching frequencies, thick-film technology
and a high degree of silicon integration. The high
reliability and very low package height makes
these converters ideal for Telecom and Datacom
applications requiring input-to-output isolation
with board spacing down to 0.6".
The PT4200 series is offered in a unique
molded through-hole or SMD-DIP package
with single output voltages of 2V, 3.3V, 5V, and
12V, dual outputs of 5V, +5V/+3.3V, and 12V.
Ordering Information
Through-Hole
PT4201A = 2V/1.5A
PT4202A = 3.3V/1.5A
PT4203A = 5V/1.2A
PT4204A = 12V/0.6A
PT4301A = 5V/1A
PT4302A = +5.2V/1A,
+3.3V/1A
PT4303A = 12V/0.25A
Surface Mount
PT4201C = 2V/1.5A
PT4202C = 3.3V/1.5A
PT4203C = 5V/1.2A
PT4204C = 12V/0.6A
PT4301C = 5V/1A
PT4302C = +5.2V/1A,
+3.3V/1A
PT4303C = 12V/0.25A
Pin-Out Information
Pin
Function
1
V
out
1
2
V
out
return
3
V
out
2 or N/C
4
Do not connect
5
Do not connect
6
Do not connect
7
Do not connect
8*
V
adj
9*
Nominal output
voltage resistor
10
Turn-on/off input
voltage adjust
11
Remote on/off
12
Do not connect
13
Do not connect
14
Do not connect
15
Do not connect
16
Do not connect
17
-V
in
18
+V
in
* Please note that when the Vout
adjust is not used, pin 8 must be
connected to pin 9.
3-7 WATT 48V INPUT
ISOLATED DC-DC CONVERTER
S e r i e s
(For dimensions and PC
board layout, see Package
Style 900.)
Specifications
Characteristics
Characteristics
Characteristics
Characteristics
Characteristics
PT42
PT42
PT42
PT42
PT42/4300
/4300
/4300
/4300
/4300 SERIES
SERIES
SERIES
SERIES
SERIES
(T
(T
(T
(T
(T
a
a
a
a
a
= 25C unless noted)
= 25C unless noted)
= 25C unless noted)
= 25C unless noted)
= 25C unless noted)
Symbols
Symbols
Symbols
Symbols
Symbols
Conditions
Conditions
Conditions
Conditions
Conditions
Min
Min
Min
Min
Min
Typ
Typ
Typ
Typ
Typ
Max
Max
Max
Max
Max
Units
Units
Units
Units
Units
Output Current
I
o
Over V
in
range
V
o
= 2V, 3.3V
0
--
1.5
A
V
o
= 5V
0
--
1.2
A
V
o
= 12V
0
--
0.6
A
Current Limit
I
cl
V
in
= 48V
V
o
= 2V
2.0
--
3.3
A
V
o
= 3.3V
1.7
--
3.3
A
V
o
= 5V
1.4
--
2.4
A
V
o
= 12V
0.7
--
1.2
A
On/Off Standby Current
I
in standby
V
in
= 48V, Pin 11 = -V
in
--
0.5
--
mA
Short Circuit Current
I
sc
V
in
= 48V
V
o
= 2V
--
2.8
--
A
V
o
= 3.3V
--
2.4
--
A
V
o
= 5V
--
1.9
--
A
V
o
= 12V
--
1.2
--
A
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
Over I
o
Range
38**
48
72
V
Output Voltage Tolerance
V
o
Over I
o
Range
--
4
--
%V
o
Idling Voltage
V
o
I
o
= 0A
V
o
= 2V
--
2.7
3.0
V
V
o
= 3.3V
--
3.65
4.0
V
V
o
= 5V
--
5.6
6.0
V
V
o
= 12V
--
14.3
17
V
Ripple Rejection
RR
Over V
in
range @ 120 Hz
--
60
--
dB
Line Regulation
Reg
line
Over V
in
range @ max I
o
--
0.5
--
%V
o
Load Regulation
Reg
load
10% to 100% of I
o
max
--
3
--
%V
o
V
o
Ripple/Noise
V
n
V
in
= 48V, I
o
=I
o
max
--
30
70
mV
pp
Transient Response
t
tr
50% load change
--
100
300
Sec
V
o
over/undershoot
--
3.0
5.0
%V
o
Efficiency
V
in
=48V, I
o
=1.5A,
V
o
=2V
--
73
--
%
V
in
=48V, I
o
=1.5A,
V
o
=3.3V
--
79
--
%
V
in
=48V, I
o
=1.2A,
V
o
=5V
--
80
--
%
V
in
=48V, I
o
=0.6A,
V
o
=12V
--
83
--
%
Switching Frequency
o
Over V
in
and I
o
--
485
--
kHz
Operating Temperature
T
a
V
in
= 48V @ max I
o
-40
--
+85
C
Free air convection, (40-60LFM)
Pin Temperature
Tp
@ Pin1
--
--
95
C
Storage Temperature
T
s
--
-55
--
+125
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, mounted to a PCB
Weight
--
--
--
20
--
grams
Isolation
--
--
1500
--
--
VDC
Flammability
--
Materials meet UL 94V-0
** Minimum input voltage is adjustable - See application note.
PT42/4300
18
17
16
15
14
13
12
11
10
1
2
3
4
5
6
7
8
9
+Vin
-Vin
N C
R C
T O A
+Vout1
-Vout
+Vout2 or NC
N C
Vadj
N O R
Standard Application
For assistance or to order, call
(800) 531-5782
66
Power Trends, Inc.
27715 Diehl Road, Warrenville, IL 60555
(800) 531-5782
Fax: (630) 393-6902 http://www.powertrends.com
Application Notes
Mechanical Outline
Product Selector Guide
Revised 5/15/98
PT4203 5.0V
(See Note 1)
PT4204 12.0V
(See Note 1)
Efficiency vs Output Current
Efficiency vs Output Current
Efficiency vs Output Current
Ripple vs Output Current
Ripple vs Output Current
Ripple vs Output Current
Power Dissipation vs Output Current
Power Dissipation vs Output Current
Power Dissipation vs Output Current
PT4202 3.3V
(See Note 1)
Efficiency - %
Ripple-(mV)
PD-(W
atts)
Efficiency - %
Efficiency - %
Ripple-(mV)
Ripple-(mV)
PD-(W
atts)
PD-(W
atts)
Iout-(Amps)
Iout-(Amps)
Iout-(Amps)
Iout-(Amps)
Iout-(Amps)
Iout-(Amps)
Iout-(Amps)
Iout-(Amps)
Iout-(Amps)
40
50
60
70
80
90
100
0
0.3
0.6
0.9
1.2
1.5
36.0V
42.0V
48.0V
55.0V
60.0V
Vin
40
50
60
70
80
90
100
0
0.2
0.4
0.6
0.8
1
1.2
36.0V
42.0V
48.0V
55.0V
60.0V
Vin
40
50
60
70
80
90
100
0
0.1
0.2
0.3
0.4
0.5
0.6
36.0V
42.0V
48.0V
55.0V
60.0V
Vin
0
5
10
15
20
25
0
0.3
0.6
0.9
1.2
1.5
60.0V
55.0V
48.0V
42.0V
36.0V
Vin
0
5
10
15
20
25
0
0.2
0.4
0.6
0.8
1
1.2
60.0V
55.0V
48.0V
42.0V
36.0V
Vin
0
5
10
15
20
25
0
0.1
0.2
0.3
0.4
0.5
0.6
60.0V
55.0V
48.0V
42.0V
36.0V
Vin
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
0
0.3
0.6
0.9
1.2
1.5
60.0V
55.0V
48.0V
42.0V
36.0V
Vin
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
0
0.2
0.4
0.6
0.8
1
1.2
60.0V
55.0V
48.0V
42.0V
36.0V
Vin
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
0
0.1
0.2
0.3
0.4
0.5
0.6
60.0V
55.0V
48.0V
42.0V
36.0V
Vin
Note 1:
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.
P T 4 2 / 4 3 0 0
S e r i e s
For assistance or to order, call
(800) 531-5782
67
48V Bus Products
DA
T
A
SHEETS
Power Trends, Inc.
27715 Diehl Road, Warrenville, IL 60555
(800) 531-5782
Fax: (630) 393-6902 http://
www.powertrends.com
C H A R A C T E R I S T I C D A T A
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pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL
APPLICATIONS"). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
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In order to minimize risks associated with the customer's applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
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Copyright
1999, Texas Instruments Incorporated
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