XP Power's JHM20 range of 20 W DC/DC power modules offers international agency approvals for medical and healthcare applications. The series is suitable for all medical applications and is particularly intended for use where the DC/DC converter provides a reinforced [2x means of patient protection (2xMOPP)] safety isolation barrier, including patient contact, and patient vicinity applications.
Modules in the JHM20 series are certified by both UL and TUV and carry all international approvals including IEC60601-1, EN60601-1, and ANSI/AMMI ES60601-1 for medical safety. This certification along with the CB report including risk management allows designers to use them for critical safety barriers with confidence while reducing the time and cost associated with the end equipment approval. Suitable for direct patient contact, the modules have a maximum of just 2.5 µA of patient leakage current and offer 2xMOPP at a 250 VAC working voltage, ensuring patient and operator safety.
The JHM20 series comprises a total of 18 modules, offering 20 W of power in a compact 50.8 mm x 25.4 mm PCB-mount footprint. The 2:1 input range offers flexibility with nominal input voltages of 12 VDC, 24 VDC, and 48 V DC. Isolated, fully-floating, single- and dual-output versions are available at 5 VDC, 12 VDC, and 15 VDC, allowing the provision of single rails of 24 VDC and 30 VDC. All single outputs are simple to trim by ±10% via a single external resistor.
The modules offer excellent levels of efficiency and operate from -40°C to +80°C, delivering full power at temperatures up to +60°C allowing use in challenging applications. A wide range of protection mechanisms, such as short circuit and overload, are included to protect both the power module and the system load. The case is made from a self-extinguishing UL94V-0 material.
JHM20 modules are certified to meet the EN55011 level A standard for EMC emissions without the need for any external components. It is also certified to IEC60601-1-2 Ed. 4 for EMC immunity. These pre-certifications ease the task of the designer when submitting applications for system-level approvals.