FM3-25W Series DC-DC Modular Power Supply Products
product description
Typical performance

Input characteristic
Input Voltage Range (DC) | 18~36V |
36~72V |
Output characteristic
Output voltage accuracy | Vout1 nominal output voltage ±1%/Vout2 nominal output voltage ±3% |
Load effect | 10%~100%Ionom Change time △Voutnom≤±0.5% |
Source effect | Vinmin~Vinmax Change time △ Voutnom≤±0.2% |
Overcurrent protection | Output closed automatic recovery in the 120% to 200%Iout1nom range |
Ripple noise | ≤1% Voutnom(max) |
Conversion efficiency | See product selection table |
Temperature coefficient | ≤±0.02%/℃ (Maximum value) |
General characteristic
Isolation voltage | Vin~Vout、Vin~Case、Vout~Case All three are ≥500VDC/min(1500DC can be achieved according to custome requirements) |
No failure interval | ≥1×10⁶h |
Switching frequency | Around 300kHz |
Protection function | Long-term short-circuit protection self-recovery |
Operating temperature | −25~+55 ° C full load /+55~+85 ° C derated use (-40 ~+60 ° C can be achieved according to customer requirements) |
Storage temperature | −55~+105℃ |
Relative humidity | 10RH~90RH |
Cooling mode | Natural cooling |
Selection list
Model number |
Input voltage range Vdc |
Output voltage/current (V)/(A) |
Maximum capacitive load(µF) |
Typical efficiency (%) |
FM3-24S05 |
18~36 |
5.05/0.60 |
76 |
|
FM3-24S12 |
18~36 |
12/0.25 |
80 |
|
FM3-24S15 |
18~36 |
15/0.20 |
80 |
|
FM3-48S05 |
36~72 |
5.05/0.60 |
78 |
|
FM3-48S12 |
36~72 |
12/0.25 |
80 |
|
FM3-48S15 |
36~72 |
15/0.20 |
80 |
|
FM3-24D05 |
18~36 |
±5.05/0.30 |
76 |
|
FM3-24D12 |
18~36 |
±12/0.13 |
80 |
|
FM3-24D15 |
18~36 |
±15/0.10 |
80 |
|
FM3-48D05 |
36~72 |
±5.05/0.30 |
78 |
|
FM3-48D12 |
36~72 |
±12/0.13 |
80 |
|
FM3-48D15 |
36~72 |
±15/0.10 |
80 |
|
Note: Input voltage is optional 12V(9~18V)、110V(75~150V) |
Product diagram

Pin definition
definition |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
Single channel |
-Vin |
-Vin |
NC |
NC |
NC |
+Vin |
+Vin |
-Vo |
NC |
+Vo |
two-way |
-Vin |
-Vin |
COM |
NC |
Vo₂ |
+Vin |
+Vin |
COM |
NC |
Vo₁ |
product description
Typical performance

Input characteristic
Input voltage range(DC) | 9~18V |
18~36V | |
9~36V | |
36~72V | |
18~72V |
Output characteristic
Output voltage accuracy | Vout1 nominal output voltage ±1%/Vout2 nominal output voltage ±3% |
Load effect | 10%~100%Ionom Change time △Voutnom≤±0.5% |
Source effect | Vinmin~Vinmax Change time △ Voutnom≤±0.2% |
Overcurrent protection | Output closed automatic recovery in the 120% to 200%Iout1nom range |
Ripple noise | ≤1% Voutnom(max) |
Conversion efficiency | See product selection table |
Temperature coefficient | ≤±0.02%/℃ (Maximum value) |
General characteristic
Isolation voltage | Vin~Vout、Vin~Case、Vout~Case All three are ≥500VDC/min(1500DC can be achieved according to customer requirements) |
No failure interval | ≥1×10⁶h |
Switching frequency | Around 300kHz |
Protection function | Long-term short-circuit protection self-recovery |
Operating temperature | −25~+55 °C full load /+55~+85 °C derated use (-40 ~+60 °C can be achieved according to customer requirements) |
Storage temperature | −55~+105℃ |
Relative humidity | 10RH~90RH |
Cooling mode | Natural cooling |
Selection list
Model number |
Input voltage range Vdc |
Output voltage/current (V)/(A) |
Maximum capacitive load(µF) |
Typical efficiency (%) |
FM5-12S3V3 |
9~18 |
3.3/1.00 |
74 |
|
FM5-12S05 |
9~18 |
5.05/1.00 |
76 |
|
FM5-12S12 |
9~18 |
12/0.42 |
82 |
|
FM5-12S15 |
9~18 |
15/0.33 |
82 |
|
FM5-12S24 |
9~18 |
24/0.21 |
82 |
|
FM5-24S3V3 |
18~36 |
3.3/1.00 |
76 |
|
FM5-24S05 |
18~36 |
5.05/1.00 |
78 |
|
FM5-24S12 |
18~36 |
12/0.42 |
82 |
|
FM5-24S15 |
18~36 |
15/0.33 |
82 |
|
FM5-24S24 |
18~36 |
24/0.21 |
82 |
|
FM5-48S3V3 |
36~72 |
3.3/1.00 |
76 |
|
FM5-48S05 |
36~72 |
5.05/1.00 |
78 |
|
FM5-48S12 |
36~72 |
12/0.42 |
82 |
|
FM5-48S15 |
36~72 |
15/0.33 |
82 |
|
FM5-48S24 |
36~72 |
15/0.21 |
82 |
|
FM5-12D05 |
9~18 |
±5.05/0.50 |
78 |
|
FM5-12D12 |
9~18 |
±12/0.21 |
82 |
|
FM5-12D15 |
9~18 |
±15/0.17 |
82 |
|
FM5-24D05 |
18~36 |
±5.05/0.50 |
78 |
|
FM5-24D12 |
18~36 |
±12/0.21 |
82 |
|
FM5-24D15 |
18~36 |
±15/0.17 |
82 |
|
FM5-48D05 |
36~72 |
±5.05/0.50 |
78 |
|
FM5-48D12 |
36~72 |
±12/0.21 |
82 |
|
FM5-48D15 |
36~72 |
±15/0.17 |
82 |
|
Note: Input voltage range is optional 9~36V、18~72V。 |
Product diagram

Pin definition
definition |
1 |
2 |
3 |
4 |
5 |
Single channel |
+Vin |
-Vin |
+Vo |
NP |
-Vo |
two-way |
+Vin |
-Vin |
Vo₁ |
COM |
Vo₂ |
product description
Typical performance

Input characteristic
Input voltage range(DC) | 9~18V |
18~36V | |
9~36V | |
36~72V | |
18~72V | |
75~150V |
Output characteristic
Output voltage accuracy | Vout1 nominal output voltage ±1%/Vout2 nominal output voltage ±3% |
Load effect | 10%~100%Ionom Change time △Voutnom≤±0.5% |
Source effect | Vinmin~Vinmax Change time △ Voutnom≤±0.2% |
Overcurrent protection | Output closed automatic recovery in the 120% to 200%Iout1nom range |
Ripple noise | ≤1% Voutnom(max) |
Conversion efficiency | See product selection table |
Temperature coefficient | ≤±0.02%/℃ (Maximum value) |
General characteristic
Isolation voltage | Vin~Vout、Vin~Case、Vout~Case All three are ≥500VDC/min(1500DC can be achieved according to customer requirements) |
No failure interval | ≥1×10⁶h |
Switching frequency | 300kHz around |
Protection function | Long-term short-circuit protection self-recovery |
Operating temperature | −25~+55 °C full load /+55~+85 °C derated use (-40 ~+60 °C can be achieved according to customer requirements) |
Storage temperature | −55~+105℃ |
Relative humidity | 10RH~90RH |
Cooling mode | Natural cooling |
Selection list
Model number |
Input voltage range Vdc |
Output voltage/current (V)/(A) |
Maximum capacitive load(µF) |
Typical efficiency (%) |
FM10-12S3V3 |
9~18 |
3.3/2.00 |
76 |
|
FM10-12S05 |
9~18 |
5.05/2.00 |
78 |
|
FM10-12S12 |
9~18 |
12/0.84 |
82 |
|
FM10-12S15 |
9~18 |
15/0.67 |
82 |
|
FM10-12S24 |
9~18 |
24/0.42 |
82 |
|
FM10-24S3V3 |
18~36 |
3.3/2.00 |
76 |
|
FM10-24S05 |
18~36 |
5.05/2.00 |
80 |
|
FM10-24S12 |
18~36 |
12/0.84 |
82 |
|
FM10-24S15 |
18~36 |
15/0.67 |
82 |
|
FM10-24S24 |
18~36 |
24/0.42 |
82 |
|
FM10-48S3V3 |
36~72 |
3.3/2.00 |
76 |
|
FM10-48S05 |
36~72 |
5.05/2.00 |
82 |
|
FM10-48S12 |
36~72 |
12/0.84 |
83 |
|
FM10-48S15 |
36~72 |
15/0.67 |
83 |
|
FM10-48S24 |
36~72 |
24/0.42 |
84 |
|
FM10-12D05 |
9~18 |
±5.05/1.00 |
78 |
|
FM10-12D12 |
9~18 |
±12/0.42 |
82 |
|
FM10-12D15 |
9~18 |
±15/0.33 |
82 |
|
FM10-24D05 |
18~36 |
±5.05/1.00 |
80 |
|
FM10-24D12 |
18~36 |
±12/0.42 |
82 |
|
FM10-24D15 |
18~36 |
±15/0.33 |
82 |
|
FM10-48D05 |
36~72 |
±5.05/1.00 |
80 |
|
FM10-48D12 |
36~72 |
±12/0.42 |
83 |
|
FM10-48D15 |
36~72 |
±15/0.33 |
83 |
|
Note: The input voltage can be 9~36V, 18~72V, 75~150V |
Product diagram

Pin definition
definition |
1 |
2 |
3 |
4 |
5 |
Single channel |
+Vin |
-Vin |
+Vo |
NP |
-Vo |
two-way |
+Vin |
-Vin |
Vo₁ |
COM |
Vo₂ |
product description
Typical performance

Input characteristic
Input voltage range(DC) | 9~18V 18~36V 36~72V 75~150V |
Remote control CNT | Suspension on is connected to -Vin off |
Output characteristic
Output voltage accuracy | Vout1 nominal output voltage ±1%/Vout2 nominal output voltage ±3% |
Load effect | 10%~100%Ionom Change time △Voutnom≤±0.5% |
Source effect | Vinmin~VinmaxChange time △ Voutnom≤±0.2% |
Overcurrent protection | Output closed automatic recovery in the 120% to 200%Iout1nom range |
Ripple noise | ≤1% Voutnom(max) |
Conversion efficiency | See product selection table |
Temperature coefficient | ≤±0.02%/℃ (Maximum value) |
Voltage regulation | ±10%Vo₁ Vo₂ Tracks the Vo₁ |
General characteristic
Isolation voltage | Vin-vout, VIN-CASE, VOUT-CASE ≥500VDC/min(1500DC can be achieved according to customer requirements) 110V input products between the three ≥1500VDC/min |
No failure interval | ≥1×10⁶h |
Switching frequency | 300kHz |
Protection function | Long-term short-circuit protection self-recovery |
Operating temperature | −25~+55 °C full load /+55~+85 °C derated use (-40 ~+60 °C can be achieved according to customer requirements) |
Storage temperature | −55~+105℃ |
Relative humidity | 10RH~90RH |
Cooling mode | Natural cooling |
Selection list
Model number |
Input voltage range Vdc |
Output voltage/current (V)/(A) |
Maximum capacitive load(µF) |
Typical efficiency (%) |
FM20-12S3V3 |
9~18 |
3.3/4.00 |
76 |
|
FM20-12S05 |
9~18 |
5.05/4.00 |
78 |
|
FM20-12S12 |
9~18 |
12/1.67 |
85 |
|
FM20-12S15 |
9~18 |
15/1.33 |
85 |
|
FM20-12S24 |
9~18 |
24/0.83 |
85 |
|
FM20-24S3V3 |
18~36 |
3.3/4.00 |
76 |
|
FM20-24S05 |
18~36 |
5.05/4.00 |
80 |
|
FM20-24S12 |
18~36 |
12/1.67 |
85 |
|
FM20-24S15 |
18~36 |
15/1.33 |
85 |
|
FM20-24S24 |
18~36 |
24/0.83 |
85 |
|
FM20-48S3V3 |
36~72 |
3.3/6.00 |
78 |
|
FM20-48S05 |
36~72 |
5.05/4.00 |
82 |
|
FM20-48S12 |
36~72 |
12/1.67 |
85 |
|
FM20-48S15 |
36~72 |
15/1.33 |
85 |
|
FM20-48S24 |
36~72 |
24/0.83 |
85 |
|
FM20-12D05 |
9~18 |
±5.05/2.00 |
78 |
|
FM20-12D12 |
9~18 |
±12/0.84 |
85 |
|
FM20-12D15 |
9~18 |
±15/0.67 |
85 |
|
FM20-24D05 |
18~36 |
±5.05/2.00 |
80 |
|
FM20-24D12 |
18~36 |
±12/0.84 |
85 |
|
FM20-24D15 |
18~36 |
±15/0.67 |
85 |
|
FM20-48D05 |
36~72 |
±5.05/2.00 |
80 |
|
FM20-48D12 |
36~72 |
±12/0.84 |
85 |
|
FM20-48D15 |
36~72 |
±15/0.67 |
85 |
|
Note: Input voltage range is optional 110VDC(75~150VDC) |
Product diagram

Pin definition
definition |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
Single channel |
+Vin |
−Vin |
NP |
CNT |
NP |
+Vo |
−Vo |
TRIM |
two-way |
+Vin |
−Vin |
NP |
CNT |
Vo₁ |
COM |
Vo₂ |
TRIM |
product description
Typical performance

Input characteristic
Input voltage range(DC) | 9~18V 18~36V 36~72V 75~150V |
Remote control CNT | Suspension on is connected to -Vin off |
Output characteristic
Output voltage accuracy | Vout1 nominal output voltage ±1%/Vout2 nominal output voltage ±3% |
Load effect | 10%~100%Ionom Change time △Voutnom≤±0.5% |
Source effect | Vinmin~Vinmax Change time △ Voutnom≤±0.2% |
Overcurrent protection | Output closed automatic recovery in the 120% to 200%Iout1nom range |
Ripple noise | ≤1% Voutnom(max) |
Conversion efficiency | See product selection table |
Temperature coefficient | ≤±0.02%/℃ (Maximum value) |
Voltage regulation | ±10%Vo₁Vo₂Tracks the Vo₁ |
General characteristic
Isolation voltage | Vin-vout, VIN-CASE, VOUT-CASE ≥500VDC/min(1500DC can be achieved according to customer requirements) 110V input products between the three ≥1500VDC/min |
No failure interval | ≥1×10⁶h |
Switching frequency | Around 300kHz |
Protection function | Long term short circuit protection self recovery |
Operating temperature | −25~+55℃Full load use/+55~+85℃Reduced usage (can be achieved at -40 ℃~+60 ℃ according to customer requirements) |
Storage temperature | −55~+105℃ |
Relative humidity | 10RH~90RH |
Cooling mode | Natural cooling |
Selection list
Model number |
Input voltage range Vdc |
Output voltage/current (V)/(A) |
Maximum capacitive load(µF) |
Typical efficiency (%) |
FM25-12S3V3 |
9~18 |
3.3/5.00 |
76 |
|
FM25-12S05 |
9~18 |
5.05/5.00 |
78 |
|
FM25-12S12 |
9~18 |
12/2.10 |
85 |
|
FM25-12S15 |
9~18 |
15/1.67 |
85 |
|
FM25-12S24 |
9~18 |
24/1.04 |
85 |
|
FM25-24S3V3 |
18~36 |
3.3/5.00 |
76 |
|
FM25-24S05 |
18~36 |
5.05/5.00 |
78 |
|
FM25-24S12 |
18~36 |
12/2.10 |
85 |
|
FM25-24S15 |
18~36 |
15/1.67 |
85 |
|
FM25-24S24 |
18~36 |
24/1.04 |
85 |
|
FM25-48S3V3 |
36~72 |
3.3/5.00 |
76 |
|
FM25-48S05 |
36~72 |
5.05/5.00 |
78 |
|
FM25-48S12 |
36~72 |
12/2.10 |
85 |
|
FM25-48S15 |
36~72 |
15/1.67 |
85 |
|
FM25-48S24 |
36~72 |
24/1.04 |
85 |
|
FM25-12D05 |
9~18 |
±5.05/2.50 |
78 |
|
FM25-12D12 |
9~18 |
±12/1.04 |
85 |
|
FM25-12D15 |
9~18 |
±15/0.83 |
85 |
|
FM25-24D05 |
18~36 |
±5.05/2.50 |
80 |
|
FM25-24D12 |
18~36 |
±12/1.04 |
85 |
|
FM25-24D15 |
18~36 |
±15/0.83 |
85 |
|
FM25-48D05 |
36~72 |
±5.05/2.50 |
80 |
|
FM25-48D12 |
36~72 |
±12/1.04 |
85 |
|
FM25-48D15 |
36~72 |
±15/0.83 |
85 |
|
Note: Input voltage range is optional 110VDC(75~150VDC) |
Product diagram

Pin definition
definition |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
Single channel |
+Vin |
−Vin |
NP |
CNT |
NP |
+Vo |
−Vo |
TRIM |
two-way |
+Vin |
−Vin |
NP |
CNT |
Vo₁ |
COM |
Vo₂ |
TRIM |