DC-DC CONVERTER
FDD25 SERIES
20 ~ 30W 2:1 INPUT RANGE
CHINFA ELECTRONICS IND., CO. LTD.
ISO 9001 Certified
www.chinfa.com
sales@chinfa.com
FDD25 – 03 S 3
MODEL LIST
MODEL NO. INPUT
VOLTAGE
OUTPUT
WATTAGE
OUTPUT
VOLTAGE
OUTPUT
CURRENT
EFF.
(TYP.)
EFF.
(MIN.) CASE
Single Output Models
FDD25 - 03S1 9~18 VDC 20 WATTS +3.3 VDC 6000 mA 80% 77% FD
FDD25 - 05S1 9~18 VDC 25 WATTS + 5 VDC 5000 mA 83% 81% FD
FDD25 - 12S1 9~18 VDC 25 WATTS + 12 VDC 2100 mA 86% 84% FD
FDD25 - 15S1 9~18 VDC 25 WATTS + 15 VDC 1700 mA 87% 85% FD
FDD25 - 03S2 18~36 VDC 20 WATTS +3.3 VDC 6000 mA 80% 78% FD
FDD25 - 05S2 18~36 VDC 25 WATTS + 5 VDC 5000 mA 85% 83% FD
FDD25 - 12S2 18~36 VDC 30 WATTS + 12 VDC 2500 mA 86% 84% FD
FDD25 - 15S2 18~36 VDC 30 WATTS + 15 VDC 2000 mA 88% 86% FD
FDD25 - 03S3 36~72 VDC 20 WATTS +3.3 VDC 6000 mA 80% 78% FD
FDD25 - 05S3 36~72 VDC 25 WATTS + 5 VDC 5000 mA 85% 83% FD
FDD25 - 12S3 36~72 VDC 30 WATTS + 12 VDC 2500 mA 87% 85% FD
FDD25 - 15S3 36~72 VDC 30 WATTS + 15 VDC 2000 mA 88% 86% FD
Dual Output Models
FDD25 - 12D1 9~18 VDC 25 WATTS
± 12 VDC ± 1050 mA 85% 83% FD
FDD25 - 15D1 9~18 VDC 25 WATTS
± 15 VDC ± 850 mA 87% 85% FD
FDD25 - 12D2 18~36 VDC 30 WATTS ± 12 VDC ± 1250 mA 87% 85% FD
FDD25 - 15D2 18~36 VDC 30 WATTS ± 15 VDC ± 1000 mA 88% 86% FD
FDD25 - 12D3 36~72 VDC 30 WATTS ± 12 VDC ± 1250 mA 87% 85% FD
FDD25 - 15D3 36~72 VDC 30 WATTS ± 15 VDC ± 1000 mA 89% 87% FD
FEATURES
* LOW COST
* 2:1 WIDE INPUT RANGE
* I/O ISOLATION
* INPUT Pi FILTER
* SHORT CIRCUIT PROTECTION
* HIGH PERFORMANCE
* 2 YEARS WARRANTY
DESCRIPTION
THE FDD25 SERIES ARE 20 WATTS TO 30 WATTS SINGLE & DUAL OUTPUT DC/DC CONVERTERS. 2:1
WIDE INPUT RANGE WITH I/O ISOLATION AND SHORT CIRCUIT PROTECTION FEATURES. MAKES IT
SUITABLE USED ON VARIABLE APPLICATIONS WITH LOW COST. ALL FDD25 MODELS ARE PACKAGED
IN L x W x H = 2" x 2" x 0.47" BLACK COATED CASE, AND PCB MOUNTABLE DIRECTLY.
03 : 3.3V OUT
05 : 5V OUT
12 : 12V OUT
15 : 15V OUT
WATTAGE
S : SINGLE OUTPUT
D : DUAL OUTPUT
1: 9~18V IN
2: 18~36V IN
3: 36~72V IN
DC-DC CONVERTER
FDD25 SERIES
20 ~ 30W 2:1 INPUT RANGE
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: ......................................
180KHz
1,500VDC
100M Ω(min.)
-25 to +71℃
-40 to +100℃
100℃
288,000Hrs at @ GF40, according to MIL-HDBK-217F
Free air convection
±0.02% / ℃
50.8 x 50.8 x 12mm
INPUT SPECIFICATIONS
* Input voltage range / frequency: ........
* Input filter: .......................................
* No load input current: .........................
* Max. Input voltage: ............................
* Startup voltage: .................................
9 ~ 18VDC for 12V
18 ~ 36VDC for 24V
36 ~ 72VDC for 48V
Pi type
20mA for 12V in
15mA for 24V in
10mA for 48V in
20VDC for 12V in
40VDC for 24V in
75VDC for 48V in
8.5VDC for 12V in
15VDC for 24V in
33VDC for 48V in
OUTPUT SPECIFICATIONS
* Output voltage accuracy: ...................
* Minimum load: ..................................
* Line regulation: ................................
* Load regulation: ...............................
* Ripple & noise: .................................
* Efficiency: ........................................
* Voltage trim range: ...........................
* Derating: .........................................
* Case material: ..................................
±2% at Vo_nom
±1% at Vo_nom for single output models
±10% 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
150mV (max.)
Up to 89%, see model list
Vout x 10%
Vout x 5% for 3.3 Vout
See table 1
Metal
CONTROL AND PROTECTION
* Remote on/off: .................................
* Input reversed: .................................
* Output short circuit: ..........................
ON : Open or 8 ~ 10VDC
OFF : -0.3 ~ 2VDC
Shunt diode use external fuse
Continuous
DC-DC CONVERTER
FDD25 SERIES
20 ~ 30W 2:1 INPUT RANGE
CHINFA ELECTRONICS IND., CO. LTD.
ISO 9001 Certified
www.chinfa.com
sales@chinfa.com
BOTTOM VIEW
MECHANISM & PIN CONFIGURATION
mm [inch]
PHYSICAL CHARACTERISTICS
PIN ASSIGMENT
PIN NO. 1 2 4 5 6 7 8
SINGLE Vi+ Vi- S.D. NO PIN Vo+ Vo- Trim
DUAL Vi+ Vi- S.D. Vo+ com Vo- Trim
S.D. : REMOTE ON/OFF
Derating:
[TABLE 1]
Power out [%]
0
NATURAL
CONVECTION
COOLING
100
100-25
Ambient Temperture [℃]
7060
CASE SIZE 50.8 x 50.8 x 12mm
2 x 2 x 0.47inches
CASE MATERIAL Metal
WEIGHT 70 g
