公开(公告)号：FI954146A0

公开(公告)日：1995-09-04

申请号：FI954146

申请日：1995-09-04

Applicant: MOTOROLA INC

Inventor： HALL JEFFERSON W ,  BARROW STEVEN M ,  ALBERKRACK JADE HENRY ,  TISINGER ERIC W

IPC: H02M1/00 ,  H02M7/217 ,  H02M1/42 ,  H02M3/155 ,  H02M7/12 ,  G05F

Abstract: An integrated power factor control circuit (12) for keeping an average AC line current sinusoidal and in phase with the line voltage. The integrated power factor control circuit (12) provides a boosted DC voltage greater than the amplitude of the line voltage. A transconductance amplifier (16) provides a boosted source and sink current when an output voltage is significantly out of regulation. The boosted source and sink current of the transconductance amplifier (16) increases the speed in which the voltage control loop can react to an output voltage change and reduces the time needed to generate the regulated voltage under startup. A comparator (17) provides a boost current at start up and senses a no-load condition during normal operation. The comparator (17) senses the no-load condition and stops switching to eliminate further output charging before an out of range condition occurs.

公开(公告)号：FI954146A

公开(公告)日：1996-03-07

申请号：FI954146

申请日：1995-09-04

Applicant: MOTOROLA INC

Inventor： HALL JEFFERSON W ,  BARROW STEVEN M ,  ALBERKRACK JADE HENRY ,  TISINGER ERIC W

IPC: H02M1/00 ,  H02M7/217 ,  H02M1/42 ,  H02M3/155 ,  H02M7/12 ,  G05F1/70

Abstract: An integrated power factor control circuit (12) for keeping an average AC line current sinusoidal and in phase with the line voltage. The integrated power factor control circuit (12) provides a boosted DC voltage greater than the amplitude of the line voltage. A transconductance amplifier (16) provides a boosted source and sink current when an output voltage is significantly out of regulation. The boosted source and sink current of the transconductance amplifier (16) increases the speed in which the voltage control loop can react to an output voltage change and reduces the time needed to generate the regulated voltage under startup. A comparator (17) provides a boost current at start up and senses a no-load condition during normal operation. The comparator (17) senses the no-load condition and stops switching to eliminate further output charging before an out of range condition occurs.

公开(公告)号：DE69519212T2

公开(公告)日：2001-05-23

申请号：DE69519212

申请日：1995-08-31

Applicant: MOTOROLA INC

Inventor： HALL JEFFERSON W ,  BARROW STEVEN M ,  ALBERKRACK JADE HENRY ,  TISINGER ERIC W

IPC: H02M7/217 ,  H02M1/00 ,  H02M1/42 ,  H02M3/155 ,  H02M7/12 ,  H02M3/156

Abstract: An integrated power factor control circuit (12) for keeping an average AC line current sinusoidal and in phase with the line voltage. The integrated power factor control circuit (12) provides a boosted DC voltage greater than the amplitude of the line voltage. A transconductance amplifier (16) provides a boosted source and sink current when an output voltage is significantly out of regulation. The boosted source and sink current of the transconductance amplifier (16) increases the speed in which the voltage control loop can react to an output voltage change and reduces the time needed to generate the regulated voltage under startup. A comparator (17) provides a boost current at start up and senses a no-load condition during normal operation. The comparator (17) senses the no-load condition and stops switching to eliminate further output charging before an out of range condition occurs.

公开(公告)号：DE69519212D1

公开(公告)日：2000-11-30

申请号：DE69519212

申请日：1995-08-31

Applicant: MOTOROLA INC

Inventor： HALL JEFFERSON W ,  BARROW STEVEN M ,  ALBERKRACK JADE HENRY ,  TISINGER ERIC W

IPC: H02M7/217 ,  H02M1/00 ,  H02M1/42 ,  H02M3/155 ,  H02M7/12 ,  H02M3/156

Abstract: An integrated power factor control circuit (12) for keeping an average AC line current sinusoidal and in phase with the line voltage. The integrated power factor control circuit (12) provides a boosted DC voltage greater than the amplitude of the line voltage. A transconductance amplifier (16) provides a boosted source and sink current when an output voltage is significantly out of regulation. The boosted source and sink current of the transconductance amplifier (16) increases the speed in which the voltage control loop can react to an output voltage change and reduces the time needed to generate the regulated voltage under startup. A comparator (17) provides a boost current at start up and senses a no-load condition during normal operation. The comparator (17) senses the no-load condition and stops switching to eliminate further output charging before an out of range condition occurs.