Instruction Manual

DDR-480 series
Input Fuse
There is one fuse connected in series to the positive input line, which is used to protect against abnormal surge. Fuse specifications of each
model are shown as below.
Type Fuse Type Reference and Rating
Input Reverse Polarity Protection
Input Under-Voltage Protection
Inrush Current
There are two MOSFETs connected in series to the negative input line. If the input polarity is connected reversely, the MOSFETs open and
there will be no output to protect the unit.
If input voltage drops below Vimin, the internal control IC shuts down and there is no output voltage. It recovers automatically when input
voltage reaches above Vimin,please refer to the cruve below.
Inrush current is suppressed by a resistor during the initial start-up, and then the resistor is bypassed by MOSFETs to reduce power
consumption after accomplishing the start-up.
DDR-480B-24
DDR-480D-24
16.8
0
5
10
15
20
25
30
15 16 17 18 19 20
Vin
Vo
16. 5
DDR-480C-24
33.6
0
5
10
15
20
25
30
31 33 34 35 36
Turn On
Turn Off
Vin
Vo
37
67.2
0
5
10
15
20
25
30
65 66 67 68 69
Vin
Vo
70
65
B
C
D
Conquer MST, 10A, 250V *5
Conquer MST, 8A, 250V *3
Conquer MST, 6.3A, 250V *2
Time-Lag
Time-Lag
Time-Lag
480W DIN Rail Type DC-DC Converter
File Name:DDR-480-SPEC 2022-03-18
Inrush current limit Power start Normal current
33