Cascade active voltage-stabilizing controller of power switch
A technology of series voltage equalization and control devices, applied in emergency protection circuit devices, electrical components, etc., can solve the problems of poor voltage equalization consistency and controllability, large power loss of voltage equalization resistors, etc., and achieve stable voltage equalization. , The effect of strong pressure equalization control ability and wide selection range
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[0020] Refer to Figure 1. For each power module working in series, an active voltage equalization absorption module M1 is set, and the active voltage equalization absorption module M1 is connected in parallel to each main power tube V i-j C, E end, where i=1~n; j=1~2; set the drive control module M2 to connect the output control signal of the drive control module M2 to each power module and the active voltage equalization absorption module M1.
[0021] Refer to Figure 2, in the active voltage equalization module M1, set a bleeder power tube V2, the E end of the bleeder power tube V2 is connected to the E end of the main power tube, and the C side of the bleeder power tube V2 is connected to the recovery resistor R1 The reverse end of diode D2 is connected to the main power tube V with the forward end of fast recovery diode D2 i-j The C terminal of the fast recovery diode D2 and the E terminal of the bleeder power tube V2 are respectively connected across the absorption capacitor C...
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