DC-DC CONVERTER
KDD25 SERIES 21.5 ~ 25W
CHINFA ELECTRONICS IND., CO. LTD.
ISO 9001 Certified
www.chinfa.com
sales@chinfa.com
KDD25 – 12 S 01
MODEL LIST
MODEL NO. INPUT
VOLTAGE
OUTPUT
WATTAGE
OUTPUT
VOLTAGE
OUTPUT
CURRENT
EFF.
(MIN.) CASE
Single Output Models
KDD25 – 12S01 9~18 VDC 25 WATTS + 5 VDC 5000 mA 77% B
KDD25 – 12S02 9~18 VDC 25 WATTS + 12 VDC 2100 mA 80% B
KDD25 – 12S03 9~18 VDC 25 WATTS + 15 VDC 1700 mA 80% B
KDD25 – 12S05 9~18 VDC 21.5 WATTS +3.3 VDC 6500 mA 75% B
KDD25 – 24S01 18~36 VDC 25 WATTS + 5 VDC 5000 mA 79% B
KDD25 – 24S02 18~36 VDC 25 WATTS + 12 VDC 2100 mA 81% B
KDD25 – 24S03 18~36 VDC 25 WATTS + 15 VDC 1700 mA 81% B
KDD25 – 24S05 18~36 VDC 21.5 WATTS +3.3 VDC 6500 mA 77% B
KDD25 – 48S01 36~72 VDC 25 WATTS + 5 VDC 5000 mA 80% B
KDD25 – 48S02 36~72 VDC 25 WATTS + 12 VDC 2100 mA 83% B
KDD25 – 48S03 36~72 VDC 25 WATTS + 15 VDC 1700 mA 83% B
KDD25 – 48S05 36~72 VDC 21.5 WATTS +3.3 VDC 6500 mA 78% B
Dual Output Models
KDD25 – 12D01 9~18 VDC 25 WATTS ± 5 VDC +4700/-300 mA 77% B
KDD25 – 12D02 9~18 VDC 25 WATTS ± 12 VDC +1800/-300 mA 80% B
KDD25 – 12D03 9~18 VDC 25 WATTS ± 15 VDC +1400/-300 mA 80% B
KDD25 – 24D01 18~36 VDC 25 WATTS ± 5 VDC +4700/-300 mA 79% B
KDD25 – 24D02 18~36 VDC 25 WATTS ± 12 VDC +1800/-300 mA 81% B
KDD25 – 24D03 18~36 VDC 25 WATTS ± 15 VDC +1400/-300 mA 81% B
KDD25 – 48D01 36~72 VDC 25 WATTS ± 5 VDC +4700/-300 mA 80% B
KDD25 – 48D02 36~72 VDC 25 WATTS ± 12 VDC +1800/-300 mA 83% B
KDD25 – 48D03 36~72 VDC 25 WATTS ± 15 VDC +1400/-300 mA 83% B
FEATURES
* 2:1 INPUT RANGE
* ISOLATION INPUT AND OUTPUT 1.5KV DC
* HIGH PERFORMANCE UP TO 84%
* SHORT CIRCUIT PROTECTION
* 2 YEARS WARRANTY
12 : 9~18V IN
24 : 18~36V IN
48 : 36~72V IN
S : SINGLE OUTPUT
D : DUAL OUTPUT
WATTAGE
1: 5V OU
T
2: 12V OUT
3: 15V OUT
5: 3.3V OUT
DC-DC CONVERTER
KDD25 SERIES 21.5 ~ 25W
CHINFA ELECTRONICS IND., CO. LTD.
ISO 9001 Certified
www.chinfa.com
sales@chinfa.com
SPECIFICATION
All Specifications Typical At Nominal Line, Full Load, 25 Unless Otherwise Noticed℃
GENERAL SPECIFICATION
* Switching frequency: .........................
* Isolation voltage: ..............................
* Isolation resistance: ..........................
* Operating ambient temperature: .........
* Storage temperature: ........................
* Max. Case temperature: .....................
* M.T.B.F.: ..........................................
* Cooling: ...........................................
* Temperature coefficient: ....................
* Dimension: ......................................
80KHz
1,500VDC
1G Ω(min.)
-25 to +71℃
-40 to +85℃
90℃
389,000Hrs at @ GF40, according to MIL-HDBK-217F
Free air convection
±0.02% / ℃
70 x 70 x 23mm
INPUT SPECIFICATIONS
* Input voltage range / frequency: ..........
* Input filter: .......................................
* No load input current: ........................
* Max. Input voltage: ...........................
9 ~ 18VDC for 12V
18 ~ 36VDC for 24V
36 ~ 72VDC for 48V
Pi type
35mA for 12V in
30mA for 24V in
25mA for 12V in
20VDC for 12V in
40VDC for 24V in
75VDC for 48V in
OUTPUT SPECIFICATIONS
* Output voltage accuracy: ...................
* Minimum load: ..................................
* Line regulation: ................................
* Load regulation: ...............................
* Ripple & noise: .................................
* Efficiency: ........................................
* Derating: .........................................
* Case material: ..................................
±1 at Vo_nom
No load for single output models
±20% at Vo_nom for dual output models
±1% at Vo_nom
±2% at Vo_nom for single output models
±5% at Vo_nom for dual output models
Vout.x ±2%
Up to 83%, see model list
See table 1
Metal
CONTROL AND PROTECTION
* Input reversed: .................................
* Output short circuit: ..........................
Shunt diode use external fuse
Continuous
DC-DC CONVERTER
KDD25 SERIES 21.5 ~ 25W
CHINFA ELECTRONICS IND., CO. LTD.
ISO 9001 Certified
www.chinfa.com
sales@chinfa.com
MECHANISM & PIN CONFIGURATION
mm [inch]
PHYSICAL CHARACTERISTICS
PIN ASSIGMENT
PIN NO. 1 2 3 4 5 6 7
SINGLE Vi+ Vi- Vo+ Vo+ Vo- Vo- N.C.
DUAL Vi+ Vi- Vo+ Vo+ com com Vo-
Derating:
[TABLE 1]
90-25
Ambient Temperture [℃]
7060
0
NATURAL
CONVECTION
COOLING
100
Power out [%]
CASE SIZE 70 x 70 x 23mm
2.76 x 2.76 x 0.91inches
CASE MATERIAL Metal
WEIGHT 180 g
