New surface-mount current-sense transformers cut power dissipation
Connectors, Switches & EMECH
Coilcraft has launched the new CST2010 Series of current-sense transformers.
The devices detect switching current up to 40A over a frequency range of 50
to 500kHz while also isolating circuits electrically, resulting in up to 10X
lower power dissipation than current sense resistors. This makes them ideal
for switched-mode power supply applications, including feedback control,
overload detection, and load drop/shut down detection.
The compact, surface-mount CST2010 Series devices have a 14.55mm X 19.91mm
footprint with a maximum height of 10.5mm. Eleven turns ratios
(primary-to-secondary) within the series range from 1:20 to 1:200. The
CST2010 Series also offers 500Vrms isolation between windings and very low
primary DC resistance (0.00036ohm). It features RoHS compliant tin-silver,
over tin, over nickel, over phos-bronze terminations and has an ambient
temperature rating of -40C to +125C.
APEC 2015, Charlotte, North Carolina, March 15th to 19th, Booth 1107.