PRODUCT UPDATE 33 www.power-mag.com Issue 1 2024 Power Electronics Europe The cost-effective, regulated DC/DC converters are the RMOD400-2813SW, RMOD400-60-24SW and RMOD400-80-13SEW. They are intended for on-board power conversion in mobility and industrial vehicles, mounted in unprotected areas, all parts are IP69K rated for protection against water and dust. They are supplied with sealed plug-and-play connections. The RMOD400-28-13SW has a 16.8V to 56V input range with 13V output. The RMOD400-60-24SW operates from 33.6 to 96V (125V peak) input with 24V output. The RMOD400-80-13SEW has an extra-wide input continuous input range of 33.6 to 125V, with a 13V output. The RMOD400 range is chassis-mounted with baseplate cooling and achieves high efficiency, maintained down to light loads, in a compact size of 115 x 203 x 61mm. It operates with baseplate cooling to ambient of 85°C without derating. The rugged parts also feature input reverse polarity, over temperature and output over-current and short circuit protection. Isolation rating is 2.5kV DC ‘Basic’ grade and the modules are certified to IEC/EN/UL/CSA 62368-1. The DC/DC converters are also qualified to EN 60068 for resistance to temperature cycling, shock and endurance, humidity/heat cycling, vibration, mechanical shock and salt spray. Marco Kuhn, Plug & Play DC/DC product manager of Recom, says the DC/DCs converters are ‘ready to use’ in a wide variety of mobility applications with different nominal battery voltages. “Because of their comprehensive qualifications, you can fit them anywhere with confidence in a high-reliability solution,” he adds. Samples and OEM pricing of the RMOD400 range are available from all authorised distributors or directly from Recom. www.recomsolutions.co.uk Recom adds 400W DC/DC converters for on-board conversion in mobility applications mode power supplies, adapters and chargers with active clamp flyback, active clamp forward and resonant converter topologies. The MasterGaN1L and MasterGaN4L are pin- compatible with MasterGaN1 and MasterGaN4 respectively. They have a newly optimised turn-on delay that allows working at higher frequency and higher efficiency with low load, especially in resonant topologies, according to the company. The inputs accept signal voltages from 3.3V to 15V, with hysteresis and pulldown that facilitate connecting directly to a controlling device such as a microcontroller, DSP or Hall-effect sensors. A dedicated shutdown pin helps designers save system power and the two GaN HEMTs have accurately matched timing with an interlocking circuit to prevent cross-conduction conditions. The MasterGaN1L HEMTs have 150mΩ RDS(on) and 10A rated current, for use in applications up to 500W. Power consumption at no load power is 20mW and high conversion efficiency enables designers to meet stringent industry targets for standby power and average efficiency. The MasterGaN4L HEMTs target applications up to 200W, with 225mΩ RDS(on) and rated current of 6.5A. ST also supplies the EVLMG1LPBRDR1 and EVLMG4LPWRBR1 demonstration boards containing a GaN-based half-bridge power module finetuned to work in an LLC application to help designers create new topologies leveraging the new devices without needing a complete PCB design. The MasterGaN1L and MasterGaN4L are in production now in 9.0 x 9.0 x 1.0mm GQFN packages. www.st.com The next-generation of integrated MasterGaN bridge devices are claimed to simplify power supply design. The MasterGaN family combines 650V GaN high electron-mobility transistors (HEMT) with optimised gate drivers, system protection and an integrated bootstrap diode that helps power the device at start up. This level of integration means designers do not have to tackle the complex gate drive requirements of GaN transistors, says the company. The integra200W and 500W devices contain two GaN HEMTs connected in a half-bridge configuration. The arrangement is suitable for building switchedSTMicroelectronics adds 200W and 500W devices to MasterGaN family To receive your own copy of Power Electronics Europe subscribe today at: www.power-mag.com
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