公开(公告)号：DE69429660D1

公开(公告)日：2002-02-21

申请号：DE69429660

申请日：1994-10-07

Applicant: ST MICROELECTRONICS SRL

Inventor： BOTTI EDOARDO ,  MANDRINI TIZIANA

IPC: H03F1/00 ,  H03F1/02 ,  H03F3/30 ,  H03F3/45 ,  H03F3/68 ,  H03F3/72

Abstract: Distorting effects and disturbances caused by abrupt voltage changes on the output nodes of a pair of selfconfiguring amplifiers for alternatively driving in a bridge mode or in a single-ended mode by one amplifier of the pair a certain load, in function of the level of the input signal, because of the enabling/disabling of a common mode control loop, are effectively eliminated by storing the voltage of a common mode control node of the pair of amplifiers on a capacitance during a phase of disabling of said common mode control loop. Abrupt voltage drops and recoveries at the switching instants are prevented.

公开(公告)号：DE69426935T2

公开(公告)日：2001-08-02

申请号：DE69426935

申请日：1994-12-30

Applicant: ST MICROELECTRONICS SRL

Inventor： BOTTI EDOARDO ,  MANDRINI TIZIANA

IPC: B60R16/02 ,  B60R16/03 ,  G05F1/10 ,  H02H3/20 ,  H02H7/06 ,  H02H7/20

Abstract: A semiconductor electronic circuit with a protection device against supply voltage overloading, being of the type which comprises a first power circuit portion (2) connected to a power supply line (AL) and enabled through at least a first transistor (Q1). This transistor (Q1) has a control terminal driven by a voltage sensor (R1, R2, Z1) connected to the power supply line (AL). The semiconductor electronic circuit (1) is characterized, moreover, in that it comprises a second signal circuit portion (3) connected to the power supply line (AL) in a structurally independent manner of the first power circuit portion (2) and through a controlled switch (M1).

公开(公告)号：DE69429660T2

公开(公告)日：2002-11-14

申请号：DE69429660

申请日：1994-10-07

Applicant: ST MICROELECTRONICS SRL

Inventor： BOTTI EDOARDO ,  MANDRINI TIZIANA

IPC: H03F1/00 ,  H03F1/02 ,  H03F3/30 ,  H03F3/45 ,  H03F3/68 ,  H03F3/72

Abstract: Distorting effects and disturbances caused by abrupt voltage changes on the output nodes of a pair of selfconfiguring amplifiers for alternatively driving in a bridge mode or in a single-ended mode by one amplifier of the pair a certain load, in function of the level of the input signal, because of the enabling/disabling of a common mode control loop, are effectively eliminated by storing the voltage of a common mode control node of the pair of amplifiers on a capacitance during a phase of disabling of said common mode control loop. Abrupt voltage drops and recoveries at the switching instants are prevented.

公开(公告)号：DE69426935D1

公开(公告)日：2001-04-26

申请号：DE69426935

申请日：1994-12-30

Applicant: ST MICROELECTRONICS SRL

Inventor： BOTTI EDOARDO ,  MANDRINI TIZIANA

IPC: B60R16/02 ,  B60R16/03 ,  G05F1/10 ,  H02H3/20 ,  H02H7/06 ,  H02H7/20

Abstract: A semiconductor electronic circuit with a protection device against supply voltage overloading, being of the type which comprises a first power circuit portion (2) connected to a power supply line (AL) and enabled through at least a first transistor (Q1). This transistor (Q1) has a control terminal driven by a voltage sensor (R1, R2, Z1) connected to the power supply line (AL). The semiconductor electronic circuit (1) is characterized, moreover, in that it comprises a second signal circuit portion (3) connected to the power supply line (AL) in a structurally independent manner of the first power circuit portion (2) and through a controlled switch (M1).