PYH200 Series DC/DC Converters

TDK-Lambda’s PYH200 series of 200 W DC/DC converters are capable of operating from an ultra-wide 12:1 input voltage of 14 V to 160 V_DC making the converters compatible with 24 V, 48 V, 72 V, or 110 V_DC nominal system voltages. Applications include railroad rolling stock and trackside equipment, robotics, power generation and scientific research equipment.

These converters are available with 12 V, 15 V, 24 V, or 48 V nominal outputs. 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 PYH200 models have latching overvoltage, non-latching (self-recovering) overcurrent and overtemperature protection with adjustable undervoltage control.

The hold-up time can be extended up to 30 ms with the addition of an electrolytic capacitor connected to the BUS terminal. The PYH200 switching frequency can be synchronized to an external clock with other PYH200 modules to reduce system noise. Remote on/off is also included as standard. The overall dimensions of the half-brick converter are 12.7 mm high, 61 mm wide, and 57.9 mm in length.

To meet demanding high voltage requirements for transients and 5,000 m altitude, the power modules have a 3,000 V_AC input-to-output isolation, 3,000 V_AC input-to-baseplate, and 500 V_AC output-to-baseplate. With efficiencies of up to 90%, power losses are minimized, allowing the products to operate at baseplate temperatures of -40°C to +100°C. Cooling is achieved using the optional heatsinks or a cold plate via the module’s aluminum baseplate.

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 PYH200 series has been tested to meet EN 50155, EN 45545-2, EN 61373 and EN 50121-3-2 railroad standards.