TDK-Lambda’s 20 W-rated PYD20 series of 2” x 1” footprint DC/DC converters are capable of operating from an ultra-wide 18:1 input of 8.5 VDC to 160 VDC. This makes them suitable for use with 12 V, 24 V, 48 V, 72 V, and 110 VDC nominal system voltages. Applications include railroad rolling stock and trackside equipment, robotics, power generation, and scientific research equipment.

These converters are available with 5 V, 12 V, and 15 V single outputs as well as ±12 V, ±15 V, and ±24 V dual outputs. The dual models can be configured to provide a 20 W single 24 V, 30 V, or 48 V output. Using the trim function, they can be adjusted using a resistor or an external voltage to compensate for voltage drops or to accommodate non-standard system voltages. The PYD20 models have overvoltage, overcurrent, and overtemperature protection.

Remote on/off is also included as standard. Overall dimensions of the converters are 10.2 mm high, 25.4 mm wide, and 50.8 mm long. The plastic case is silicone-potted to provide a high resistance to shock and vibration. To meet demanding high-voltage requirements for transients and 5,000 m altitude, the power modules have input-to-output isolation of 3,000 VAC. With efficiencies of up to 90%, power losses are minimized, allowing the products to operate with case temperatures of up to -40°C to +105°C, with derating at high temperatures and convection or forced-air cooling.

All models carry the CE and UKCA marks for the low-voltage and RoHS directives and are certified to IEC/UL/CSA/EN 62368-1 safety standards. With external components, the PYD20 series has been tested or designed to meet EN 50155 (railroad standard for electronic equipment in railroad vehicles), EN 45545-2 (fire safety), and EN 61373 (railroad vibration standard).