DC/DC - Fixed Input

MORNSUN 0.2-3W fixed input DC DC converter features compact size and high power density. It can be used in application where the voltage of the input power supply is stable. The ultra-compact volume is an ideal solution for communications, instrumentation and industrial electronics applications. And the operating temperature range is -40°C to 85°C, even up to 105°C, which is suitable for automotive industry. We hope that those high-efficiency, excellent-quality, and cost-effective DC DC converter is an ideal fit for your application needs.

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Series Power(W) Vin(VDC) Vout(VDC) No. of Outputs Isolation(VDC) Package Footprint & 3D Certification Datasheet Sample Buy
F0505XT-W2R3
0.2 5 5 1 2000VAC SMD
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F0505XT-W2R3 0.2 5 5 1 2000VAC SMD
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B_S-W2R2
0.25 3.3,5,12,15,24 3.3,5,9,12 1 1500 SIP
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B0303S-W2R2 0.25 3.3 3.3 1 1500 SIP
B0305S-W2R2 0.25 3.3 5 1 1500 SIP
B1205S-W2R2 0.25 12 5 1 1500 SIP
B1505S-W2R2 0.25 15 5 1 1500 SIP
B2405S-W2R2 0.25 24 5 1 1500 SIP
B2409S-W2R2 0.25 24 9 1 1500 SIP
F_XT-W2R2
0.25 5,12 5 1 3000 SMD
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F1205XT-W2R2 0.25 12 5 1 3000 SMD
B_XT-W2R2
0.25 3.3,5,12,24 3.3,5,9,12,15 1 1500 SMD
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B0303XT-W2R2 0.25 3.3 3.3 1 1500 SMD
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B0305XT-W2R2 0.25 3.3 5 1 1500 SMD
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B0312XT-W2R2 0.25 3.3 12 1 1500 SMD
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B1203XT-W2R2 0.25 12 3.3 1 1500 SMD
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B1205XT-W2R2 0.25 12 5 1 1500 SMD
B1209XT-W2R2 0.25 12 9 1 1500 SMD
B1212XT-W2R2 0.25 12 12 1 1500 SMD
B2405XT-W2R2 0.25 24 5 1 1500 SMD
IB05_S-W75R3
0.75 5 3.3,5,9,12,15 1 3000 SIP
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IB0503S-W75R3 0.75 5 3.3 1 3000 SIP
IB0505S-W75R3 0.75 5 5 1 3000 SIP
IB0509S-W75R3 0.75 5 9 1 3000 SIP
IB0512S-W75R3 0.75 5 12 1 3000 SIP
IB0515S-W75R3 0.75 5 15 1 3000 SIP
IB_S-W75R3
0.75 12,24 3.3,5,12,15 1 1500 SIP
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IB1203S-W75R3 0.75 12 3.3 1 1500 SIP
IB1205S-W75R3 0.75 12 5 1 1500 SIP
IB1212S-W75R3 0.75 12 12 1 1500 SIP
IB1215S-W75R3 0.75 12 15 1 1500 SIP
IB2403S-W75R3 0.75 24 3.3 1 1500 SIP
IB2405S-W75R3 0.75 24 5 1 1500 SIP
IB2412S-W75R3 0.75 24 12 1 1500 SIP
IB2415S-W75R3 0.75 24 15 1 1500 SIP
IB05_XT-W75R3
0.75 5 3.3,5,9,12,15 1 1500 SMD
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IB0503XT-W75R3 0.75 5 3.3 1 1500 SMD
IB0505XT-W75R3 0.75 5 5 1 1500 SMD
IB0509XT-W75R3 0.75 5 9 1 1500 SMD
IB0512XT-W75R3 0.75 5 12 1 1500 SMD
IB0515XT-W75R3 0.75 5 15 1 1500 SMD
IB_XT-W75R3
0.75 12 5,12,15 1 1500 SMD
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IB1205XT-W75R3 0.75 12 5 1 1500 SMD
IB1212XT-W75R3 0.75 12 12 1 1500 SMD
IB1215XT-W75R3 0.75 12 15 1 1500 SMD
IB_XT-W75R3-TR
0.75 12 5,12,15 1 1500 SMD
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IB1205XT-W75R3-TR 0.75 12 5 1 1500 SMD
IB1212XT-W75R3-TR 0.75 12 12 1 1500 SMD
IB1215XT-W75R3-TR 0.75 12 15 1 1500 SMD
IB05_XT-W75R3-TR
0.75 5 3.3,5,9,12,15 1 1500 SMD
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IB0503XT-W75R3-TR 0.75 5 3.3 1 1500 SMD
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IB0505XT-W75R3-TR 0.75 5 5 1 1500 SMD
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IB0509XT-W75R3-TR 0.75 5 9 1 1500 SMD
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IB0512XT-W75R3-TR 0.75 5 12 1 1500 SMD
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IB0515XT-W75R3-TR 0.75 5 15 1 1500 SMD
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IE05_KS-1WR3
1 5 ±5,±9,±12,±15 2 3000 SIP
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IE0505KS-1WR3 1 5 ±5 2 3000 SIP
IE0509KS-1WR3 1 5 ±9 2 3000 SIP
IE0512KS-1WR3 1 5 ±12 2 3000 SIP
IE0515KS-1WR3 1 5 ±15 2 3000 SIP
IB05_LS-1WR3
1 5 3.3,5,9,12,15,24 1 1500 SIP
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IB0505LS-1WR3 1 5 5 1 1500 SIP
IB0503LS-1WR3 1 5 3.3 1 1500 SIP
IB0509LS-1WR3 1 5 9 1 1500 SIP
IB0512LS-1WR3 1 5 12 1 1500 SIP
IB0515LS-1WR3 1 5 15 1 1500 SIP
IB0524LS-1WR3 1 5 24 1 1500 SIP
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IF05_S-1WR3
1 5 3.3,5,9,12,15,24 1 3000 SIP
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IF0503S-1WR3 1 5 3.3 1 3000 SIP
IF0505S-1WR3 1 5 5 1 3000 SIP
IF0509S-1WR3 1 5 9 1 3000 SIP
IF0512S-1WR3 1 5 12 1 3000 SIP
IF0515S-1WR3 1 5 15 1 3000 SIP
IF0524S-1WR3 1 5 24 1 3000 SIP
B05xxMT-1WR4
1 5 5 1 3000 DFN
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B0505MT-1WR4 1 5 5 1 3000 DFN
FB05xxT-1WR4
1 5 5 1 4200 DFN
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FB0505T-1WR4 1 5 5 1 4200 DFN
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IB_LS-1WR3
1 12,15,24 3.3,5,9,12,15 1 1500 SIP
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IB1205LS-1WR3 1 12 5 1 1500 SIP
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IB1209LS-1WR3 1 12 9 1 1500 SIP
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IB1212LS-1WR3 1 12 12 1 1500 SIP
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IB1215LS-1WR3 1 12 15 1 1500 SIP
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IB1505LS-1WR3 1 15 5 1 1500 SIP
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IB1515LS-1WR3 1 15 15 1 1500 SIP
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IB2403LS-1WR3 1 24 3.3 1 1500 SIP
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IB2405LS-1WR3 1 24 5 1 1500 SIP
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IB2409LS-1WR3 1 24 9 1 1500 SIP
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IB2412LS-1WR3 1 24 12 1 1500 SIP
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IB2415LS-1WR3 1 24 15 1 1500 SIP
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IF_S-1WR3
1 12,15,24 3.3,5,9,12,15 1 3000 SIP
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IF1205S-1WR3 1 12 5 1 3000 SIP
IF1209S-1WR3 1 12 9 1 3000 SIP
IF1212S-1WR3 1 12 12 1 3000 SIP
IF1215S-1WR3 1 12 15 1 3000 SIP
IF1505S-1WR3 1 15 12 1 3000 SIP
IF1515S-1WR3 1 15 15 1 3000 SIP
IF2403S-1WR3 1 24 3.3 1 3000 SIP
IF2405S-1WR3 1 24 5 1 3000 SIP
IF2409S-1WR3 1 24 9 1 3000 SIP
IF2412S-1WR3 1 24 12 1 3000 SIP
IF2415S-1WR3 1 24 15 1 3000 SIP
E05_D-1WR3
1 5 ±5,±9,±12,±15 2 3000 DIP
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E0505D-1WR3 1 5 ±5 2 3000 DIP
E0509D-1WR3 1 5 ±9 2 3000 DIP
E0512D-1WR3 1 5 ±12 2 3000 DIP
E0515D-1WR3 1 5 ±15 2 3000 DIP
A05_S-1WR3
1 5 ±3.3,±5,±9,±12,±15,±24 2 1500 SIP
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A0503S-1WR3 1 5 ±3.3 2 1500 SIP
A0505S-1WR3 1 5 ±5 2 1500 SIP
A0509S-1WR3 1 5 ±9 2 1500 SIP
A0512S-1WR3 1 5 ±12 2 1500 SIP
A0515S-1WR3 1 5 ±15 2 1500 SIP
A0524S-1WR3 1 5 ±24 2 1500 SIP
B05_LS-1WR3
1 5 3.3,5,9,12,15,24 1 1500 SIP
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B0503LS-1WR3 1 5 3.3 1 1500 SIP
B0505LS-1WR3 1 5 5 1 1500 SIP
B0509LS-1WR3 1 5 9 1 1500 SIP
B0512LS-1WR3 1 5 12 1 1500 SIP
B0515LS-1WR3 1 5 15 1 1500 SIP
B0524LS-1WR3 1 5 24 1 1500 SIP
E05_S-1WR3
1 5 ±3.3,±5,±9,±12,±15,±24 2 3000 SIP
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E0503S-1WR3 1 5 ±3.3 2 3000 SIP
E0505S-1WR3 1 5 ±5 2 3000 SIP
E0509S-1WR3 1 5 ±9 2 3000 SIP
E0512S-1WR3 1 5 ±12 2 3000 SIP
E0515S-1WR3 1 5 ±15 2 3000 SIP
E0524S-1WR3 1 5 ±24 2 3000 SIP
F05_S-1WR3
1 5 3.3,5,9,12,15,24 1 3000 SIP
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F0503S-1WR3 1 5 3.3 1 3000 SIP
F0505S-1WR3 1 5 5 1 3000 SIP
F0509S-1WR3 1 5 9 1 3000 SIP
F0512S-1WR3 1 5 12 1 3000 SIP
F0515S-1WR3 1 5 15 1 3000 SIP
F0524S-1WR3 1 5 24 1 3000 SIP
F05_N-1WR3
1 5 3.3,5,7.2,9,12,15,24 1 3000 DIP
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F0503N-1WR3 1 5 3.3 1 3000 DIP
F0505N-1WR3 1 5 5 1 3000 DIP
F0509N-1WR3 1 5 9 1 3000 DIP
F0512N-1WR3 1 5 12 1 3000 DIP
F0515N-1WR3 1 5 15 1 3000 DIP
F0524N-1WR3 1 5 24 1 3000 DIP
F0507N-1WR3 1 5 7.2 1 3000 DIP
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B05_S-1WR3
1 5 3.3,5,9,12,15,24 1 1500 SIP
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B0503S-1WR3 1 5 3.3 1 1500 SIP
B0505S-1WR3 1 5 5 1 1500 SIP
B0509S-1WR3 1 5 9 1 1500 SIP
B0512S-1WR3 1 5 12 1 1500 SIP
B0515S-1WR3 1 5 15 1 1500 SIP
B0524S-1WR3 1 5 24 1 1500 SIP
IF05_XT-1WR3
1 5 3.3,5,9,12,15 1 3000 SMD
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IF0503XT-1WR3 1 5 3.3 1 3000 SMD
IF0505XT-1WR3 1 5 5 1 3000 SMD
IF0509XT-1WR3 1 5 9 1 3000 SMD
IF0512XT-1WR3 1 5 12 1 3000 SMD
IF0515XT-1WR3 1 5 15 1 3000 SMD

* For reference only. The detailed info please refer to the datasheet.

Series
F0505XT-W2R3
F0505XT-W2R3
B_S-W2R2
B0303S-W2R2
B0305S-W2R2
B1205S-W2R2
B1505S-W2R2
B2405S-W2R2
B2409S-W2R2
F_XT-W2R2
F1205XT-W2R2
B_XT-W2R2
B0303XT-W2R2
B0305XT-W2R2
B0312XT-W2R2
B1203XT-W2R2
B1205XT-W2R2
B1209XT-W2R2
B1212XT-W2R2
B2405XT-W2R2
IB05_S-W75R3
IB0503S-W75R3
IB0505S-W75R3
IB0509S-W75R3
IB0512S-W75R3
IB0515S-W75R3
IB_S-W75R3
IB1203S-W75R3
IB1205S-W75R3
IB1212S-W75R3
IB1215S-W75R3
IB2403S-W75R3
IB2405S-W75R3
IB2412S-W75R3
IB2415S-W75R3
IB05_XT-W75R3
IB0503XT-W75R3
IB0505XT-W75R3
IB0509XT-W75R3
IB0512XT-W75R3
IB0515XT-W75R3
IB_XT-W75R3
IB1205XT-W75R3
IB1212XT-W75R3
IB1215XT-W75R3
IB_XT-W75R3-TR
IB1205XT-W75R3-TR
IB1212XT-W75R3-TR
IB1215XT-W75R3-TR
IB05_XT-W75R3-TR
IB0503XT-W75R3-TR
IB0505XT-W75R3-TR
IB0509XT-W75R3-TR
IB0512XT-W75R3-TR
IB0515XT-W75R3-TR
IE05_KS-1WR3
IE0505KS-1WR3
IE0509KS-1WR3
IE0512KS-1WR3
IE0515KS-1WR3
IB05_LS-1WR3
IB0505LS-1WR3
IB0503LS-1WR3
IB0509LS-1WR3
IB0512LS-1WR3
IB0515LS-1WR3
IB0524LS-1WR3
IF05_S-1WR3
IF0503S-1WR3
IF0505S-1WR3
IF0509S-1WR3
IF0512S-1WR3
IF0515S-1WR3
IF0524S-1WR3
B05xxMT-1WR4
B0505MT-1WR4
FB05xxT-1WR4
FB0505T-1WR4
IB_LS-1WR3
IB1205LS-1WR3
IB1209LS-1WR3
IB1212LS-1WR3
IB1215LS-1WR3
IB1505LS-1WR3
IB1515LS-1WR3
IB2403LS-1WR3
IB2405LS-1WR3
IB2409LS-1WR3
IB2412LS-1WR3
IB2415LS-1WR3
IF_S-1WR3
IF1205S-1WR3
IF1209S-1WR3
IF1212S-1WR3
IF1215S-1WR3
IF1505S-1WR3
IF1515S-1WR3
IF2403S-1WR3
IF2405S-1WR3
IF2409S-1WR3
IF2412S-1WR3
IF2415S-1WR3
E05_D-1WR3
E0505D-1WR3
E0509D-1WR3
E0512D-1WR3
E0515D-1WR3
A05_S-1WR3
A0503S-1WR3
A0505S-1WR3
A0509S-1WR3
A0512S-1WR3
A0515S-1WR3
A0524S-1WR3
B05_LS-1WR3
B0503LS-1WR3
B0505LS-1WR3
B0509LS-1WR3
B0512LS-1WR3
B0515LS-1WR3
B0524LS-1WR3
E05_S-1WR3
E0503S-1WR3
E0505S-1WR3
E0509S-1WR3
E0512S-1WR3
E0515S-1WR3
E0524S-1WR3
F05_S-1WR3
F0503S-1WR3
F0505S-1WR3
F0509S-1WR3
F0512S-1WR3
F0515S-1WR3
F0524S-1WR3
F05_N-1WR3
F0503N-1WR3
F0505N-1WR3
F0509N-1WR3
F0512N-1WR3
F0515N-1WR3
F0524N-1WR3
F0507N-1WR3
B05_S-1WR3
B0503S-1WR3
B0505S-1WR3
B0509S-1WR3
B0512S-1WR3
B0515S-1WR3
B0524S-1WR3
IF05_XT-1WR3
IF0503XT-1WR3
IF0505XT-1WR3
IF0509XT-1WR3
IF0512XT-1WR3
IF0515XT-1WR3

Fixed Input-FAQs

How to meet the requirement for ripple & noise when using low-power converters?

Low-power converters have a higher requirement for ripple & noise which need further filtering. 

There are the following measures: 

(1) add a capacitor at the output terminal (the function of the capacitor is to further lower ripple & noise with a relatively low frequency); 

2) add a PI filter at the output terminal by filtering methods of capacitor + DM inductor + capacitor  OR capacitor + CM inductor + capacitor (this method lowers ripple & noise at the same time. If the frequency of the noise is high, it is recommended to use the pattern of capacitor + CM inductor + capacitor);

 (3) customers can choose a power module whose output voltage is one grade higher and add an LDO to reduce ripple & noise (for instance, customers practically need a 3.3V output power module but there are demanding requirements for ripple & noise. Please recommend customer to choose a 5V output power module and add an LDO to lower it to 3.3V, and the LDO can lower ripple & noise).

What are the minimum starting current and input current of a module?

The starting current of a module is generally about 1.4-1.6 times that of the Iin (max). The increase of capacitive load of the output terminal will also increase the starting current value of the module. It is recommended to select the forestage power supply with higher power. For the minimum input current in the unloading condition, please check the ‘No-load current’ section in the datasheet of the corresponding module.

The module fails to start up when the capacitive load is relatively large. How to solve it?

In practical application, the capacitive load exceeds the maximum capacitive load of operating module. In addition, when the output capacitance is extremely large, large starting current is required at the moment of start-up, resulting in the failure of starting the module.

It is recommended to decrease the connected capacitance of the output terminal or add a buffer circuit at the output terminal to improve the capacity of the module to withstand capacitive load

What problems will be caused and how to avoid them if a module starts up with an input voltage lower than the minimum rated one?

The module may be damaged when it starts up at a voltage that is lower than that of input voltage range. Because there is no under-voltage protective circuits for the wide input voltage converters. 

The starting voltage should be determined on the basis of the threshold voltage of MOSFET and soft starting circuit, and the starting voltage of the MOSFET is 2V or more lower than that of the minimum input voltage of the module.

In this circumstance, lower voltage input requires higher input current so as to supply equal power; the power module is susceptible to damage in a higher input current condition.

(1) It should be ensured that the actual input voltage is in the rated range specified in the datasheet; 

(2) it is recommended to add an input under-voltage protective circuit on the front-terminal of the module in accordance with the Wide Input Voltage DC/DC Converter Application Guide.

Why is there high noise when the fixed input voltage product is used as the power source of the relay?

There is high reflected ripple during the operation of the relay. 

It is recommended to implement some filtering measures or add a Y capacitor between the input and output grounds.

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