For assistance or to order, call (800) 531-5782
Revised 3/1/99
P T 4 1 0 0 S e r i e s
4 8 V
Application Notes
Mechanical Outline
Product Selector Guide
48V 15 WATT ISOLATED
DC-DC CONVERTER
Power Trends’ PT4100 series of Isolated
• -40°C to +85°C Operating
Temperature Range
• 1500 VDC Isolation
• Power Density 15 Watts/in3
• Wide Input Voltage Range
36V to 75V
• 82% Efficiency
• Small Footprint
• Fast Transient Response
• UL Approved
48V 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 sur-
face-mount construction. They feature the
industry’s smallest footprint, a power density of
15 Watts/in3, and operate at 82% efficiency.
They are designed for Telecom, Industrial,
Computer, Medical, and other distributed
power applications requiring input-to-output
isolation and an industrial temperature range.
Specifications
Standard Application
PT4100 SERIES
On/Off
Characteristics
1
(Ta=25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
+Vin
-Vin
+Vout
-Vout
3
2
5
4
Output Current
Io
Over Vin range
Vo = 3.3V
0
0
0
0
—
—
—
—
4.0
3.0
A
A
A
A
PT4100
V
o = 5V
Vo = 12V
Vo = 15V
1.25
1.0
Current Limit
Icl
Vin = 36V
Vo = 5V
Vo = 12V
Vo = 15V
—
—
—
4.00
1.75
1.4
—
—
—
A
A
A
Pin-Out Information
Pin Function
On/Off Standby Current
Short Circuit Current
Iin standby
Isc
Vin = 48V, Pin 1 = -Vin
—
7
10
mA
Vin = 48V
Vo = 5V
—
—
—
5.5
3.5
2.0
—
—
—
A
A
A
Remote
ON/OFF
1
Vo = 12V
Vo = 15V
2
3
4
5
-Vin
Inrush Current
Iir
tir
Vin = 48V @ max Io
On start-up
—
—
0.6
1.0
1.0
5.0
A
mSec
+Vin
-Vout
+Vout
Input Voltage Range
Vin
Io = 0.1 to max Io
36.0
48.0
75.0
V
Output Voltage Tolerance ∆Vo
Over Vin Range
—
±1.0
±2.0
%Vo
TA= -40°C to +85°C
6
Do not connect
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
Ordering Information
Through-Hole
Vin=48V, Io=3.0A, Vo=5V
Vin=48V, Io=1.25A, Vo=12V
Vin=48V, Io=1.0A, Vo=15V
—
—
—
75
100
150
200
mVpp
mVpp
mVpp
120
100
PT4101A = 5 Volts
PT4102A = 12 Volts
PT4103A = 15 Volts
PT4110A = 3.3 Volts
PT4117A = 5.2 Volts
Transient Response
Efficiency
ttr
50% load change
—
—
100
3.0
200
5.0
µSec
%Vo
Vo over/undershoot
η
Vin=48V, Io=3.0A, Vo=5V
Vin=48V, Io=1.25A, Vo=12V
Vin=48V, Io=1A, Vo=15V
—
—
—
80
81
82
—
—
—
%
%
%
Switching Frequency
ƒo
Over Vin and Io,
Vo=5V
800
600
850
650
900
700
kHz
kHz
Vo=12V/15V
Surface Mount
Recommended Operating Ta
Temperature Range
Vin = 48V @ max Io
-40
0
—
—
14
—
—
+85*
+70
—
°C
°C
PT4101C = 5 Volts
PT4102C = 12 Volts
PT4103C = 15 Volts
PT4110C = 3.3 Volts
PT4117C = 5.2 Volts
(For dimensions and PC
board layout, see Package
Style 700.)
Free air convection, (40-60LFM)
200 LFM
PT4110
Thermal Resistance
Case Temperature
Storage Temperature
Mechanical Shock
θja
Tc
Ts
—
Free Air Convection, (40-60LFM)
—
—
-40
°C/W
°C
@ Thermal shutdown
—
100
110
°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
—
—
—
—
—
V
Capacitance
Resistance
1100
—
pF
MΩ
10
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
70
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com