A new generation of compact AC-DC power supplies delivers up to 1200 W output with ultra-low acoustic noise and high efficiency, targeting medical, dental, test, and industrial equipment where space, reliability, and quiet operation are critical.
TDK Corporation has expanded its TDK-Lambda CUS-M line of AC-DC power supplies with new 1200 W models, pushing the series’ power range from 30 W up to 1500 W. The latest addition targets medical, industrial, and test environments that demand high output in a compact and quiet form factor.
The new CUS1200M models pack 1200 W output into a footprint of 187 x 93 mm with a slim 42.5 mm profile. Despite the power density, cooling noise remains low thanks to a variable-speed fan—just 30 dBA at 20% load and 42 dBA at full load—making the units suitable for applications sensitive to acoustic interference, such as dental or broadcast systems.
The key features are:
- Input voltage range: 85–265 Vac; full-rated output at 90 Vac
- Output voltage options: 24 V, 36 V, 48 V
- High efficiency up to 95.5% → lower internal heating, stable operation, compact footprint
- Typical standby power: <0.6 W → energy efficient
- Operating temperature: -20 °C to +70 °C with linear derating at higher temps
Standard features include a 5 V/2 A standby supply, remote on/off control, remote sense capability, and a power-good signal.Safety and compliance remain a core focus. The CUS1200M offers 4000 Vac input-to-output isolation (2 x MoPP) and leakage current under 250 µA, making it suitable for medical devices meeting B and BF classifications. Approvals cover IEC/EN/ES 60601-1 and IEC/EN/UL 62368-1, along with CE and UKCA marking for Low Voltage, EMC, and RoHS directives. EMC performance meets EN 55011-B and EN 55032-B for conducted and radiated emissions, plus harmonics and immunity standards such as IEC 61000-4.
With an operating altitude up to 5000 meters, the supplies are aimed at equipment where space, efficiency, and low noise are critical. Target applications include medical and dental instruments, test and measurement systems, broadcast equipment, and wider industrial use cases.
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