The SIPMOS transistor inter-compensation Darlington control circuit

Published:2011/7/20 23:18:00 Author:Borg | Keyword: SIPMOS, transistor, Darlington control circuit | From:SeekIC

T1 is conducting when the output transistor of TDA4700 is conducting, the emitter current is limited by R3 and T3 is controlled by D3. At the same time, T2 basic pole is positive to the emitter, so T2 is blocked, so is T4. If the output transistor of SIPMOS is blocked, both T1 and T3 are blocked. The input capacitor of SIPMOS transistor is charged by T2 and R4, so T2 controls T4, which accelerates the discharging process. The virtue of the circuit is that the attracted current is low but the controlled current is high.



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