Document
UMEC International Corporation
UM2900 SERIES
40 – 50 Watt DC/DC Converters
♦ 2:1 Input Range ♦ 40-50 W Isolated Output ♦ High-Density ♦ Remote on/off Control ♦ Design meet EN60950 ♦ RoHS Compliant
SPECIFICATIONS All specifications are typical at nominal line, full load and 25°C unless otherwise noted.
4. Single: from full load to 1/4 load, Triple: from full load to 1/2 load with all other outputs at rated load.
5. Measured with 0.1uF ceramic Cap. cross to each output. 10uF/25V Tantalum Cap to Auxiliaries output.
INPUT SPECIFICATIONS Input Voltage Range, 24V ……..…………………….. 18-36V
48V …….……………………… 36-72V Input Filter …….…………………………………… Pi Network
OUTPUT SPECIFICATIONS Voltage Accuracy1, Single Output ………………... ±2%max.
Triple Output +5V ……..…….. ±2%max. Auxiliaries ….… ±5% max.
Transient Response2 Single, 25% step Load Change ……….….… <500u sec.
External Trim Adj.