Application Notes
Mechanical Outline
For assistance or to order, call (800) 531-5782
Product Selector Guide
P T 4 1 0 0 S e r i e s
2 4 V
15 WATT 24V TO 5V/12V/15V
ISOLATED DC-DC CONVERTER
Revised 5/15/98
• -40°C to +85°C Operating
Temperature Range
• 1500 VDC Isolation
• Power Density 15 Watts/in3
• Wide Input Voltage Range
18V to 40V
• 83% Efficiency
• Small Footprint
• UL Approved
Power Trends’ PT4104A (5V), PT4105A (12V)
and PT4106A (15V). Isolated DC-DC Converters
advance the state-of-the-art for board-mounted con-
verters by employing high switching frequencies
greater than 650 KHz and planar magnetics and sur-
face-mount construction. They feature the industry’s
smallest footprint, a power density of 15 Watts/in3, and
operate at 83% efficiency. They are designed for
Telecom, Industrial, Computer, Medical, and other
distributed power applications requiring input-to-
output isolation and an industrial temperature range.
Standard Application
On/Off
1
+Vin
-Vin
+Vout
-Vout
3
2
5
4
PT4100
Pin-Out Information
Specifications
PT4100 SERIES
Pin Function
Characteristics
Remote
ON/OFF
(Ta=25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
1
Output Current
Io
Over Vin range,
Vo = 5V
0
0
0
—
—
—
3.0
1.25
1.0
A
A
A
V
o = 12V
2
3
4
5
6
-Vin
Vo = 15V
+Vin
Current Limit
Icl
Vin = 18V,
Vo = 5V
Vo = 12V
Vo = 15V
—
—
—
4.0
—
—
—
A
A
A
-Vout
1.75
1.4
+Vout
On/Off Standby Current
Short Circuit Current
Iin standby
Isc
Vin = 24V, Pin 1 = -Vin
—
7
10
mA
Do not connect
Vin = 24V,
Vo = 5V
—
—
—
6.25
2.5
—
—
—
A
A
A
Vo = 12V
Vo = 15V
2.0
Inrush Current
Iir
tir
Vin = 24V @ max Io
On start-up
—
—
1.0
1.0
2.0
5.0
A
mSec
Ordering Information
Input Voltage Range
Vin
Io = 0.1 to max Io
18.0
24.0
40.0
V
Through-Hole
Output Voltage Tolerance ∆Vo
Over Vin Range
—
±1.0
±2.0
%Vo
TA= -40°C to +85°C
PT4104A = 5 Volts
PT4105A = 12 Volts
PT4106A = 15 Volts
Ripple Rejection
Line Regulation
Load Regulation
Vo Ripple/Noise
RR
Over Vin range @ 120 Hz
Over Vin range @ max Io
10% to 100% of Io max
—
—
—
60
—
dB
Regline
Regload
Vn
±0.2
±0.4
±1.0
±1.0
%Vo
%Vo
Surface Mount
Vin=24V, Io=3.0A, Vo=5V
Vin=24V, Io=1.25A, Vo=12V
Vin=24V, Io=1.25A, Vo=15V
—
—
—
75
100
150
200
mVpp
mVpp
mVpp
PT4104C = 5 Volts
PT4105C = 12 Volts
PT4106C = 15 Volts
75
100
Transient Response
Efficiency
ttr
50% load change
—
—
125
3.0
200
5.0
µSec
%Vo
Vo over/undershoot
η
Vin=24V, Io=3.0A, Vo=5V
Vin=24V, Io=1.25A, Vo=12V
Vin=24V, Io=1A, Vo=15V
—
—
—
82
82
83
—
—
—
%
%
%
(For dimensions and PC
board layout, see Package
Style 700.)
Switching Frequency
ƒo
Over Vin and Io,
Vo=5V
Vo=12V/15V
800
600
850
650
900
700
kHz
kHz
Recommended Operating Ta
Temperature Range
Vin = 24V @ max Io
-40
—
+85*
°C
Free air convection, (40-60LFM)
Free air convection, (40-60LFM)
@ Thermal shutdown
Thermal Resistance
Case Temperature
Storage Temperature
Mechanical Shock
θja
Tc
Ts
—
—
12
—
—
—
°C/W
°C
—
100
110
-40
°C
Per Mil-STD-202F, Method 213B,
6mS, Half-sine, mounted to a PCB
—
50
—
G’s
Mechanical Vibration
Weight
—
Per Mil-STD-202F, Method 204D,
10-500Hz, Soldered in a PCB
—
—
10
28
—
—
G’s
—
—
grams
Isolation
—
—
—
—
—
—
1500
—
10
—
—
—
—
V
Capacitance
Resistance
1100
—
pF
MΩ
Flammability
—
Materials meet UL 94V-0
Remote On/Off
On
Off
Open or 2.5 to 7.0 VDC above -Vin
Short or 0 to 0.8 VDC above -Vin
* See Thermal Derating Curves
64
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
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