TKD SERIES - 50 WATT, 3/4 BRICK
DESCRIPTION
The TKD series of dual-output DC/DC converters provides
high power and full isolation in a low cost, single-board
design package. The TKD series provides highly reliable,
onboard conversion of telecom and datacom input voltages
to isolated low output voltages without the need for a
heatsink. The TKD series is ideally suited for Distributed
Power Architectures (DPA), telecommunications equip-
ment, LAN/WAN, and data processing applications.
FEATURES
• Independent Dual Outputs
• Low Cost Package
TECHNICAL SPECIFICATIONS
• No Heatsink
Input
• Single-Board Design
• Wide Trim Range for both Outputs
• 1500V Isolation
• Industry Standard Footprint
• Remote Shutdown
• Flexible Output Power
Parameter
Maximum
Unit
Voltage Range
48 nom.
36-75
100/100
25
VDC
V/ms
Transient Voltage Withstand
Turn-on Time
mS
Input Reflected Ripple Current
UVP Trip Range
50
mApk-pk
Von/Voff
34/30
Efficiency vs. Output
90.0%
Output
Parameter
Setpoint Accuracy
Maximum
Unit
% Vout
80.0%
1.5
VIN=36V
Line Reg. Vin min. – Vin max., Iout
rated output 1
70.0%
0.5
% Vout
VIN=48V
Load Reg. Iout min. – Iout max., Vin
rated output 1
0.5
1
% Vout
A
60.0%
VIN=75V
Min. Output Current, each Output
Dynamic Reg., Loadstep
Pk Deviation
50.0%
0.80 1.60 2.40 3.20 4.00 4.80 5.60 6.40 7.20 8.00
Iout1 = Iout2 (A)
4
% Vout
Settling Time
500
µS
Voltage Trim Range
Output 1
2.50-3.47
1.50-2.50
1.50-2.00
110-150
115-140
V
General
Output 2 if Vout1 set to 3.3V
Output 2 if Vout1 set to 2.5V
Power Limit Threshold Range
OVP Trip Range
V
V
Parameter
Switching Frequency
Remote ON/OFF
Positive
Maximum
Unit
200
KHz
% Pout rated
% Vout
On>3.5/Off<1.8
On<1.8/Off>3.5
1500
V
Negative (optional)
Isolation Input-Output
Temp. Coefficient
Board Temp
V
VDC
%/°C
0.03
°C
°C
°C
%
Operating Range
Storage Range
-40 to +100
-40 to +125
105 to 115
95
Notes
Thermal Shutdown Range
Humidity max, Non-Condensing
Safety
Specifications typically at 25°C, nominal line, and full load unless otherwise
stated.
Pending
1.5
Specifications subject to change without notice.
Weight (approx)
Oz.
REV. 08/01
1