28th May 2018      
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DC - DC Converter

A -48v DC telecomm supply for a DSL Switch Hub with up to 30Amps at 3v3. Providing dual inputs, common and differential mode noise filtering, to meet conducted EMC, and capacitor hold-up this power module also contained a DC-DC switching converter to 6v5, to allow for a 'clean' 5v to be generated elsewhere within the Switch Hub. To allow the CPU controller to detect the input supply voltage level, this module was designed with two voltage to frequency converters with isolated outputs.
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Qutec Systems Ltd.
Registered Office: The Old Church, Verulam Road St. Albans, Herts. AL3 4DH
Registration No. 1807115