SPECIFICATION

SD-25
25W Single Output DC-DC Converter
series
¡½ Features :
¡E2:1 wide input range
¡ Protections: Short circuit / Overload / Over voltage
E
¡ 1500VAC I/O isolation
E
¡ Built-in EMI filter, low ripple noise
E
¡ 100% full load burn-in test
E
¡ Fixed switching frequency at 83KHz
E
¡ Low cost
E
¡ High reliability
E
¡ 2 years warranty
E
SPECIFICATION
MODEL
OUTPUT
SD-25A-5
SD-25B-5
SD-25C-5
SD-25A-12
SD-25B-12
SD-25C-12
SD-25A-24
DC VOLTAGE
5V
12V
24V
RATED CURRENT
5A
2.1A
1.1A
CURRENT RANGE
0 ~ 5A
0 ~ 2.1A
0 ~ 1.1A
RATED POWER
25W
25.2W
26.4W
120mVp-p
150mVp-p
RIPPLE & NOISE (max.) Note.2 100mVp-p
11 ~ 16VDC
23 ~ 30VDC
VOLTAGE TOLERANCE Note.3 ¡Ó2.0%
¡Ó1.0%
¡Ó1.0%
LINE REGULATION
¡Ó0.5%
¡Ó0.3%
¡Ó0.2%
LOAD REGULATION
¡Ó0.5%
¡Ó0.3%
¡Ó0.2%
VOLTAGE ADJ. RANGE
4.5 ~ 5.5VDC
SD-25B-24
SD-25C-24
SETUP, RISE, HOLD UP TIME 2.5s, 50ms, ------ at full load
INPUT
VOLTAGE RANGE
A:9.2 ~ 18VDC
EFFICIENCY (Typ.)
71%
72%
74%
72%
75%
78%
75%
78%
81%
DC CURRENT
3.2A/12V
1.6A/24V
0.8A/48V
3.2A/12V
1.6A/24V
0.8A/48V
3.2A/12V
1.6A/24V
0.8A/48V
OVERLOAD
105 ~ 150% rated output power
Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE
5.75 ~ 6.75V/10% load
16.8 ~ 20V/10% load
Protection type : Hiccup mode, recovers automatically after fault condition is removed
WORKING TEMP.
-10 ~ +60¢J (Refer to "Derating Curve")
PROTECTION
WORKING HUMIDITY
ENVIRONMENT STORAGE TEMP., HUMIDITY
TEMP. COEFFICIENT
VIBRATION
SAFETY STANDARDS
SAFETY & WITHSTAND VOLTAGE
ISOLATION RESISTANCE
EMC
(Note 4)
EMC EMISSION
OTHERS
C:36 ~ 72VDC
-20 ~ +85¢J, 10 ~ 95% RH
¡Ó0.03%/¢J (0 ~ 50¢J)
10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes
Design refer to LVD
I/P-O/P:1.5KVAC
I/P-FG:1.5KVAC
O/P-FG:0.5KVAC
I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25¢J/ 70% RH
Compliance to EN55022 (CISPR22) Class B
Compliance to EN61000-4-2,3,4,6,8, EN55024,heavy industry level, criteria A
MTBF
374.3K hrs min.(SD-25A)
365.9K hrs min.(SD-25B)
99*97*36mm (L*W*H)
0.38Kg; 45pcs/17.8Kg/0.9CUFT
DIMENSION
31.5 ~ 37.5V/10% load
20 ~ 90% RH non-condensing
EMC IMMUNITY
PACKING
NOTE
B:19 ~ 36VDC
377.5K Hrs min.(SD-25C)
MIL-HDBK-217F (25¢J)
1. All parameters NOT specially mentioned are measured at 12,24,48VDC input, rated load and 25¢J of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
4. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets
EMC directives.
File Name:SD-25-SPEC 2012-09-12
SD-25
25W Single Output DC-DC Converter
Mechanical Specification
Unit:mm
36
Case No. 905
series
3.5
2
£r
51.5
9.5
1
3
5.5
M
2-
5
20.5
£r3 .
55.5
8.2
3
97
4
55
5
4.5
89
99
6.5
2-M
3
£r3
Terminal Pin No. Assignment
.5
74
18
Pin No.
1
2
3
36
.5
28
£r3
17.5
7
87
Assignment
DC INPUT VDC INPUT V+
FG
Pin No.
4
5
Assignment
DC OUTPUT +V
DC OUTPUT -V
Block Diagram
fosc : 83KHz
RECTIFIERS
&
FILTER
EMI
FILTER
I/P
RECTIFIERS
&
FILTER
POWER
SWITCHING
FG
O.L.P.
+V
-V
DETECTION
CIRCUIT
PWM
CONTROL
O.V.P.
Static Characteristics(SD-25C-24V)
OUTPUT VOLTAGE (V)
SD-25B,C/12,24
100
80
SD-25A
SD-25B-5
SD-25C-5
LOAD (%)
60
40
20
-10
-10
0
0
10
20
30
40
50
45
AMBIENT TEMPERATURE (¢J)
60
55
(VERTICAL)
(HORIZONTAL)
32
350
28
300
24
250
20
200
16
150
12
100
8
50
25
30
35
40
45
50
55
60
65
70
OUTPUT RIPPLE (mVp-p)
Derating Curve
72
INPUT VOLTAGE (V)
File Name:SD-25-SPEC 2012-09-12