For assistance or to order, call (800) 531-5782
PT3100 Series
24V
Product Selector Guide
15 WATT 24V TO 5V/12V/15V
ISOLATED DC-DC CONVERTER
Application Notes
Mechanical Outline
Revised 5/15/98
• Power Density 15 Watts/in
3
• Wide Input Voltage Range
18V to 40V
• 81% Efficiency
• 500 VDC Isolation
• Small Footprint
• No External Components Required
Isolated DC-DC Converters advance the
state-of-the-art for board-mounted converters by employing high switching frequencies
greater than 650 KHz and planar magnetics
and surface-mount construction. They feature the industry’s smallest footprint, a power
density of 15 Watts/in
at 80% efficiency. They are designed for
Power Trends’ PT3104A (5V),
PT3105A (12V) and PT3106A (15V)
Telecom, Industrial, Computer, Medical,
and other distributed power applications
requiring input-to-output isolation.
Standard Application
On/Off
+Vin
1
3
PT3100
24
+Vout
5
-Vout-Vin
Specifications
Characteristics
(Ta=25°C unless noted) Symbols Conditions Min Typ Max Units
Output Current I
Current Limit I
On/Off Standby Current I
Short Circuit Current I
Inrush Current I
Input Voltage Range V
Output Voltage Tolerance ∆V
Ripple Rejection RR Over Vin range @ 120 Hz — 60 — dB
Line Regulation Reg
Load Regulation Reg
Vo Ripple/Noise V
Transient Response t
Efficiency η Vin=24V, Io=3.0A, Vo=5V — 80 — %
Switching Frequency ƒ
Recommended Operating T
Temperature Range Free air convection, (40-60LFM)
Thermal Resistance θ
Case Temperature T
Storage Temperature T
Mechanical Shock — Per Mil-STD-202F, Method 213B,
Mechanical Vibration — Per Mil-STD-202F, Method 204D,
Weight — — — 28 — grams
Isolation — — 500 — — V
Capacitance — — — 1100 — pF
Resistance — — 10 — — MΩ
Flammability — Materials meet UL 94V-0
Remote On/Off On Open or 2.5 to 7.0 VDC above -V
* See Thermal Derating Curves
o
cl
in standby
sc
ir
t
ir
in
n
tr
o
a
ja
c
s
Off Short or 0 to 0.8 VDC above -V
Over Vin range, Vo = 5V 0 — 3.0 A
Vin = 18V, Vo = 5V — 4.0 — A
Vin = 24V, Pin 1 = -V
Vin = 24V, Vo = 5V — 6.25 — A
Vin = 24V @ max I
On start-up — 1.0 5.0 mSec
Io = 0.1 to max I
Over Vin Range
o
TA= -20°C to +70°C
Over Vin range @ max I
line
10% to 100% of Io max — ±0.4 ±1.0 %V
load
Vin=24V, Io=3.0A, Vo=5V — 75 100 mV
Vin=24V, Io=1.25A, Vo=12V — 75 150 mV
Vin=24V, Io=1.25A, Vo=15V — 100 200 mV
50% load change — 125 200 µSec
Vo over/undershoot — 3.0 5.0 %V
=24V, Io=1.25A, Vo=12V — 80 — %
V
in
Vin=24V, Io=1A, Vo=15V — 81 — %
Over Vin and Io, Vo=5V 800 850 900 kHz
Vo=12V/15V 600 650 700 kHz
Vin = 24V @ max I
Free Air Convection, (40-60LFM) — 14 — °C/W
@ Thermal shutdown — — 100 °C
6mS, Half-sine, mounted to a PCB
10-500Hz, Soldered in a PCB
= 12V 0 — 1.25 A
V
o
Vo = 15V 0 — 1.0 A
V
= 12V — 1.75 — A
o
Vo = 15V — 1.4 — A
in
V
= 12V — 2.5 — A
o
Vo = 15V — 2.0 — A
o
o
o
o
PT3100 SERIES
—7 10mA
— 1.0 2.0 A
18.0 24.0 40.0 V
— ±1.0 ±2.0 %V
— ±0.2 ±1.0 %V
-20 — +70* °C
-40 — 110 °C
—50—G’s
—10—G’s
in
in
3
, and operate
Pin-Out Information
Pin Function
Remote
1
ON/OFF
2-V
in
3+V
in
4-V
out
5+V
out
6 Do not connect
o
Ordering Information
o
o
pp
pp
pp
o
Through-Hole
PT3104A = 5 Volts
PT3105A = 12 Volts
PT3106A = 15 Volts
Surface Mount
PT3104C = 5 Volts
PT3105C = 12 Volts
PT3106C = 15 Volts
(For dimensions and PC
board layout, see Package
Style 700.)
62
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
For assistance or to order, call (800) 531-5782
PT3100 Series
CHARACTERISTIC DATA
PT3104, 5.0 VDC
(See Note 1)
Efficiency vs Output Current Efficiency vs Output Current Efficiency vs Output Current
100
90
80
70
60
Efficiency - %Ripple-(mV)Iout-(Amps)PD-(Watts)
50
40
0 0.5 1 1.5 2 2.5 3
Vin
PT3105, 12.0 VDC
(See Note 1)
100
90
18V
24V
32V
40V
80
70
60
Efficiency - %
50
40
0.25 0.5 0.75 1 1.25
Vin
18V
24V
32V
40V
Iout-(Amps) Iout-(Amps) Iout-(Amps)
Ripple vs Output Current Ripple vs Output Current Ripple vs Output Current
110
90
70
50
30
10
0 0.5 1 1.5 2 2.5 3
Iout-(Amps) Iout-(Amps) Iout-(Amps)
Vin
40V
32V
24V
18V
110
90
70
50
Ripple-(mV)
30
10
0.25 0.5 0.75 1 1.25
Vin
40V
32V
24V
18V
PT3106, 15.0 VDC
(See Note 1)
100
90
80
70
60
Efficiency - %
50
40
0.25 0.5 0.75 1
110
90
70
50
Ripple-(mV)Iout-(Amps)
30
10
0.25 0.5 0.75 1
24V
DATA SHEETS
24V Bus Products
Vin
18V
24V
32V
40V
Vin
40V
32V
24V
18V
Thermal Derating (Ta) (See Note 2) Thermal Derating (Ta) (See Note 2)
3
2.5
2
1.5
1
0.5
0
18 20 22 24 26 28 30 32 34 36 38 40
85°C
70°C
1.25
1
0.75
0.5
Iout-(Amps)
0.25
0
18 20 22 24 26 28 30 32 34 36 38 40
70˚C
85˚C
Thermal Derating (Ta) (See Note 2)
1
0.8
0.6
0.4
0.2
0
18 20 22 24 26 28 30 32 34 36 38 40
70°C
85°C
Vin-(Volts) Vin-(Volts)Vin-(Volts)
Power Dissipation vs Output Current Power Dissipation vs Output Current Power Dissipation vs Output Current
5
4
3
2
1
0
0 0.5 1 1.5 2 2.5 3
Vin
40V
32V
24V
18V
5
4
3
2
PD-(Watts)
1
0
0.25 0.5 0.75 1 1.25
5
Vin
40V
32V
24V
18V
4
3
2
PD-(Watts)
1
0
0.25 0.5 0.75 1
Iout-(Amps) Iout-(Amps) Iout-(Amps)
Note 1: All data listed in the above graphs, except for derating data, has been developed from actual products tested at 25°C. This data is considered typical data for the DC-DC Converters.
Note 2: Thermal derating graphs are developed in free air convection cooling of 40-60 LFM.
Vin
40V
32V
24V
18V
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://
www.powertrends.com
63
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