The NME0505SC from Murata is an isolated, 1W, single output DC to DC converter in SIP package. It is particularly suited to isolate or converting DC power rails. The galvanic isolation allows the device to configure an isolated negative rail in systems where only positive rails exist.

The NME series of DC-DC Converters is particularly suited to isolating and/or converting DC power rails. The galvanic isolation allows the device to be configured to provide an isolated negative rail in systems where only positive rails exist. The wide temperature range guarantees startup from –40°C and full 1 watt output at 85°C2 . For lower ripple, refer to output ripple reduction section.

The NME series offers short circuit protection options (PC) across the operating temperature range. Short circuits of less than 1Ω cause the converter to enter a ‘foldback’ limiting mode such that the input current is approximately 95mA for 0505 variant. Protection is continuous and auto-resetting on removal of the short circuit

The MTU1S0505MC is a 1-output board-mount isolated SM DC to DC Converter with a footprint reduction of over 50% from the previous generation of 1W SMD DC/DC converter. The MTU1 series is more efficient and offers improved regulation performance for applications where a wide output voltage variation cannot be tolerated. The device is suitable for all applications where high volume production is envisaged.

• Patent protected
• Footprint over pins 0.69cm²
• 1kVDC Isolation ‘Hipot Test’
• Efficiency up to 88% typical
• 1.7W/cm³ Power density
• Toroidal magnetics
• Multi-layer ceramic capacitors
• -40 to +85°C Wide operating temperature range

The RPA30-2405SAW/P from Recom Power is a RPA30-AW series 30W single output DC to DC converter with positive control function. This high power density converter has 4:1 wide input voltage range and industry standard 1"x1" case size. Despite its small size, the RPA30-AW converter is fully specified device with high efficiency, no minimum load, 1600VDC isolation, tight regulation and low ripple/noise figures. This single output DC to DC converter offers a ±10% trim range. The outputs are also fully protected against overtemperature, short circuits, overcurrent and overvoltage. The converter finds many uses in railway applications where board space is at a premium. It has Pi-Type internal input filter.

• Input voltage range from 9VDC to 36VDC (24VDC nominal input voltage)
• Output voltage of 5VDC and output current of 6000mA
• Input current of 1450mA
• Efficiency of 89% and maximum capacitive load of 10000µF
• Maximum line regulation of ±0.2%
• Load regulation of ±0.2%
• Start-up time of 8ms (power-up, CTRL ON/OFF) and internal operating frequency of 550KHz
• Ripple and noise of 50mVp-p and maximum output accuracy of ±2.0%
• Minimum isolation resistance of 10Mohm and typical isolation capacitance of 1100pF
• Maximum case temperature of 105°C