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AC-DC power supplies designed for 3,000VAC/1 Min input

23 Sep 2013  | Steve Taranovich

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CUI recently launched what the company claims as its smallest AC-DC power supplies with the release of the PBK ultra-compact SIP series. The modules are available in 1W, 3W, and 5W families and occupy a small board footprint, measuring as small as 35x11x24mm.

The high density PBK series is offered in single output voltages of 3.3, 5, 9, 12, 15, and 24VDC and can operate at AC input voltages between 85~264VAC. For high voltage DC-DC applications, the modules also provide a DC input range spanning 100~400 VDC.

All models are designed for 3,000VAC/1 Min input to output isolation, have over current and continuous short circuit protection, and can function at a wide operating range from -40 to 85°C (1W and 3W) and -25 to 85°C (5W) for use in challenging environments.

fig 1

Figure 1: A typical application circuit has MOV, fuse and NTC input protection.

The devices series meet internationally recognised UL 60950-1/EN 60950-1 standards and comply with EN55022 Class B limits for conducted and radiated EMC with few additional external components. They are ideally suited for a range of applications including automation systems, industrial systems, and telecommunication equipment.

fig 2

Figure 2: An EMC recommended circuit is detailed in the data sheet.

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