New class II power supplies for medical devices including BF applications

XP Power has released a new range of 500W AC/DC power supplies that offer class II safety certification, including BF class insulation, for medical device applications demanding class II (without earth) installation and superior EMC performance.

The PBL500 series provides power levels up to 500W forced cooled or when fitted with an integral fan and 250W convection cooled. The series takes a wide, universal input of 80VAC-264VAC at 47Hz to 63Hz and provides single output voltages from 12V to 57V. With the same series system designers can cover multiple applications.

The series is offered in two mechanical formats. The U-channel units give 250W when convection cooled and 450–500W with external forced air cooling. The top fan cover version, incorporating a variable speed integral cooling fan for low audible noise, delivers a complete 450–500W solution.

The product includes a low patient leakage current and provides 2 x MOPP from input to case, 2 x MOPP from input to output and 1 x MOPP from output to ground. Input to case and input to output isolation is rated at 4000VAC and output to ground is 1500VAC. Both conducted and radiated emissions are class B, and the series is compliant with IEC/ES/EN 60601-1 edition 3.1 and 60601-1-2 edition 4

The PBL500 series includes a 5V standby supply, overvoltage and overcurrent protection, remote sense, and thermal shutdown. Also available is an ‘AC OK’ signal and remote on/off control. The U channel version also offers a 12V 0.3A output ideal for powering system cooling fans.