48V/2A voltage regulator circuit

Published:2011/11/24 0:59:00 Author:May | Keyword: voltage regulator | From:SeekIC

The circuit uses thermistance R1' with negative temperature coefficient, so the temperature has little influence on output voltage. Outrput current peak value is confined to a definite value by resistor R4, so it has the usage of short-circuit protection. This circuit main technical data:output voltage: U2=48Voutput current: I2≤2Ainput voltage: U1≤40mΩT1 radiator thermal resistance: RthK≤0.63grd/WT2 radiator thermal resistance: RthK≤30grd/Woutput voltage variable quantity:when environmental temperature θU=0~60°C △U2=100mVwhen output current I2=0~2A (U1=constant) : △U2=80mAwhen input voltage U1=52~78V (I2=0) △U2=30mA



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