Rugged DC-DC converters with ultra-wide input for industrial and rail applications

TDK Corporation has introduced the 20W TDK-Lambda brand PYD20 series of DC-DC converters. Offering an 18:1 ultra-wide input range of 8.5VDC to 160VDC, these board mount products are provided in the industry-standard 2” x 1” format measuring 50.8mm x 25.4mm x 10.2mm (L x W x H). The plastic case is silicone potted to offer a high level of resistance to shock and vibration, valuable for applications according to EN 50155, the standard for electronic equipment employed on railway rolling stock. Applications also incorporate industrial and measurement equipment needing battery back-up or a DC source.

The series offers three nominal single outputs, 5V, 12V and 15V, adjustable over a -20% to +10% range for non-standard voltages. Three dual fixed output models, ±12V, ±15V and ±24V, are also provided and can be configured to function as a single 24V, 30V and 48V outputs. All models have overcurrent, output-overvoltage and overtemperature protection. Remote on/off is standard. The power modules provide efficiencies of up to 90% and can function with a case temperature of between -40C to +105C with derating at high temperatures.

The input to output isolation is 3000VAC and the series has been certified to the IEC/UL/CSA/EN 62368-1 safety standards with the CE and UKCA marks for the Low Voltage and RoHS Directives. Together with a typical test setup, the series has been tested to meet the EN 50155 railway standard.