Electronics Weekly Electronics Design & Components Tech News
UPDATE: Five more output voltage options have been added
They are qualified for industrial and medical use.
Initially, 12V and 24V outputs are available, with 15V, 19V, 28V, 36V and 48V models due later this eyar.
All models accept 85 to 264Vac inputs and have a no-load power consumption of less than 1.3W (output inhibited), and there is a 5V 2A or 12V 1A stand-by output.
Optional I-O includes: remote on-off, remote sense, ‘AC fail’ and ‘output good’.
When passive-cooled, up to 400W is available briefly. “The duration of that peak is up to 30 minutes at 40°C ambient with a 230Vac input, with a maximum duty cycle of 50%,” according to the company. “This makes the CUS400M ideal for applications with a relatively low quiescent power consumption and occasional peak demand, including hospital beds, dental chairs and incubators.”
The overall size of the open frame model is 77.5 x 128 x 39.5mm, and there are also baseplate, U-channel and enclosed versions, with a top-mounted fan version to follow this year. To optimise cooling, the underside of the circuit board is fitted into a proprietary thermally conductive insulated plastic base that can transfer heat into a cold plate or the system chassis.
Medical and industrial safety certifications include IEC/EN/ES 60601‑1, IEC/EN/UL 62368‑1 and IEC/EN/UL 60950‑1 with CE marking for the Low Voltage, EMC and RoHS Directives. The units also comply with EN 55011‑B and EN 55032‑B conducted and radiated emissions (Class I and II), and meet the EN 61000‑3‑2 harmonics, IEC 60601‑1‑2 Edition 4 and IEC 61000‑4 immunity standards.
Input-to-output isolation is 4,000Vac (2 x MoPP), an input-to-ground isolation of 1,500Vac (1 x MoPP), and output-to-ground isolation of 1,500Vac (1 x MoPP) for suitability in B and BF rated medical equipment.
Leakage current is <250µA and touch current <100µA.
Maximum operating, transportation and storage altitude is 5,000m.
