公开(公告)号：JPH1118423A

公开(公告)日：1999-01-22

申请号：JP17056698

申请日：1998-06-03

Applicant: MOTOROLA INC

Inventor： HALL JEFFERSON W ,  JADE H ALBERKRACK

IPC: H02M3/28 ,  H02M3/335

Abstract: PROBLEM TO BE SOLVED: To effectively control a power supply through its state circuit integrated with its control circuit by setting the output state of its memory circuit according to the value of its control signal so as to control the waveguiding mode of its control circuit. SOLUTION: A mode memory circuit 90 includes a two-input NAND gate 84, a logical circuit 86, and a positive-edge trigger toggle flip-flop 88. Particularly, the two-input NAND gate 84 has an input connected to the output of a positive detection circuit 76, and its other input is coupled in order to receive a signal 'logical undervoltage'. When a voltage Vcc begins to rise from its starting voltage of zero volt, the signal 'logical undervoltage' has an initial logical '0' value to change its value into a logical '1' value in the predetermined value of the voltage Vcc . For example, the signal 'logical undervoltage' has a logical '1' value, when the voltage Vcc is sufficiently higher than a predetermined voltage, and has the logical '0' value, when the voltage Vcc is lower than the predetermined voltage.

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：AU3100099A

公开(公告)日：2000-07-03

申请号：AU3100099

申请日：1999-03-18

Applicant: MOTOROLA INC

Inventor： HALL JEFFERSON W ,  ALBERKRACK JADE H

IPC: G05F1/56 ,  H02M3/335 ,  H03K3/017 ,  H02M1/00

Abstract: A power converter circuit (23) and a method for controlling current in a transformer (16). The power converter circuit (23) includes a controller circuit (60), a duty cycle detector circuit (61), a soft start circuit (62), and a switch (63). The switch (63) controls the current in the transformer (16). The controller circuit (60) cooperates with the soft start circuit (62) to alter the duty cycle of the switch (63). During initial start-up, the switch (63) operates at a minimum duty cycle and increases towards a maximum duty cycle to prevent transformer (16) saturation and potential failure of the switch (63). In addition, the duty cycle detector circuit (61) alters the frequency at which the switch (63) turns on and off to reduce the power consumption of the power converter circuit (23).

公开(公告)号：SG43164A1

公开(公告)日：1997-10-17

申请号：SG1996004692

申请日：1994-12-01

Applicant: MOTOROLA INC

Inventor： HALL JEFFERSON W ,  PETTY THOMAS D ,  YEE RENWIN K ,  VYNE ROBERT L ,  STOCKSTAD TROY L

IPC: H01M10/44 ,  H02J7/00 ,  H02J7/04 ,  H02J7/10

Abstract: A pulsed battery charger circuit (11) for charging a battery (28). A control circuit (17) is responsive to a sense circuit (16) that monitors the battery voltage. The control circuit (17) pulses a first current source (25) or a second current source (20). An amplifier (14) is responsive to the first (25) and second (20) current sources for generating first and second predetermined voltages between a drive output (12) and a sense input (13). The first current source (25) is pulsed when the sense circuit (16) senses the battery voltage to be less than a first threshold voltage. The second current source (20) is pulsed when the sense circuit (16) senses the battery voltage to be greater than the first threshold voltage. Both the first (25) and second (20) current sources are disabled when the sense circuit (16) senses the battery voltage to be greater than a second threshold voltage.

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：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.