Mag amp gives switcher a no-load bonus

The Sirius M is the latest configurable switched mode power supply from leading power systems solutions provider Lambda and it is particularly suited to medical equipment applications.

The Sirius M is the latest configurable switched mode power supply from leading power systems solutions provider Lambda and it is particularly suited to medical equipment applications.

Highly cost competitive, the compact new 200W unit has an impressive EMC performance, provides low ripple, and no minimum load requirement on its main output.

Also featured is a low audible noise cooling fan.

Lambda UK's sales director, Martin Southam, commented: "No minimum load on channel one is a big benefit for a lot of customers.

Sirius M is able to offer a zero minimum load requirement through the innovative mag amp technology employed.

The low noise fan is an attractive feature, particularly for office and laboratory environments".

Conducted RFI is in accordance with EN55022 curve A, as is radiated RFI when the unit's cover is fitted.

Impressive EMC immunity includes IEC1000-4-2 (ESD), level 4 criteria A, right through to IEC1000-4-8 (magnetic field), 3A/m, criteria A.

Another important feature of the Sirius M is its power factor correction circuit (PFC), something not available on its predecessor the Omega 200.

The new unit employs active power factor correction and its PFC circuit uses a conventional PWM IC rather than a dedicated PFC chip, bringing significant cost savings.

Its PFC of more than 0.95 is significantly better than passive PFC, and provides harmonic correction in accordance with EN6100-3-2.

The Sirius M utilises the very latest in design for manufacturing techniques, providing customers with a very technologically advanced but competitively priced product.

Its unique open transformer construction improves cooling and gives considerable savings in production costs.

The converter's input operating range is from 90 to 264V.

There are up to four configurable DC outputs covering ranges of: 4.5 to 8.0V at 12A, 21.5 to 27V at 7A, 10.5 to 16.5V at 3.5A and 10.5 to 16.5V at 3.5A.

Other versions are available on request.

The power supply has full overvoltage, overcurrent and short circuit protection.

It is supplied in an ultra compact aluminium case, measuring 63.5 x 127 x 189mm.

Operating temperature is from 0 to 65C.

Back to top