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1. WO2014120439 - SOFT START CIRCUITS AND TECHNIQUES

Publication Number WO/2014/120439
Publication Date 07.08.2014
International Application No. PCT/US2014/011577
International Filing Date 15.01.2014
IPC
G05F 1/46 2006.01
GPHYSICS
05CONTROLLING; REGULATING
FSYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
1Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
10Regulating voltage or current
46wherein the variable actually regulated by the final control device is dc
H02M 3/00 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
H02M 1/36 2007.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
36Means for starting or stopping converters
H02M 3/156 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
02without intermediate conversion into ac
04by static converters
10using discharge tubes with control electrode or semiconductor devices with control electrode
145using devices of a triode or transistor type requiring continuous application of a control signal
155using semiconductor devices only
156with automatic control of output voltage or current, e.g. switching regulators
CPC
G05F 1/46
GPHYSICS
05CONTROLLING; REGULATING
FSYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
1Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
10Regulating voltage or current
46wherein the variable actually regulated by the final control device is dc
G05F 1/468
GPHYSICS
05CONTROLLING; REGULATING
FSYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
1Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
10Regulating voltage or current
46wherein the variable actually regulated by the final control device is dc
468characterised by reference voltage circuitry, e.g. soft start, remote shutdown
H02M 1/36
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
36Means for starting or stopping converters
H02M 3/156
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
02without intermediate conversion into ac
04by static converters
10using discharge tubes with control electrode or semiconductor devices with control electrode
145using devices of a triode or transistor type requiring continuous application of a control signal
155using semiconductor devices only
156with automatic control of output voltage or current, e.g. switching regulators
Applicants
  • ALLEGRO MICROSYSTEMS, LLC [US]/[US]
Inventors
  • WIBBEN, Joshua
  • STODDARD, Robert
Agents
  • CROWLEY, Judith, C.
Priority Data
13/756,92201.02.2013US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SOFT START CIRCUITS AND TECHNIQUES
(FR) TECHNIQUES ET CIRCUITS DE DÉMARRAGE EN DOUCEUR
Abstract
(EN)
A regulator control circuit includes a switch control signal generator to generate a switch control signal and a soft start circuit to generate a soft start signal for use by the switch control signal generator. The soft start circuit includes a soft start controller and a decreasing circuit to decrease the soft start signal in response to the soft start controller. The soft start controller may comprise a non-regulation detector to detect a non-regulation condition. Embodiments include decreasing the soft start signal in response to a non-regulation condition lasting a predetermined time, detecting the non-regulation condition in response to a maximum duty cycle of the regulator switch, generating a soft start level indicator to control decreasing the soft start signal, and maintaining the soft start signal at a predetermined relationship with respect to a feedback signal.
(FR)
La présente invention se rapporte un circuit de commande de régulateur qui comprend un générateur de signal de commande de commutateur permettant de générer un signal de commande de commutateur et un circuit de démarrage en douceur permettant de générer un signal de démarrage en douceur destiné à être utilisé par le générateur de signal de commande de commutateur. Le circuit de démarrage en douceur comprend un dispositif de commande de démarrage en douceur et un circuit de diminution permettant de diminuer le signal de démarrage en douceur en réponse au dispositif de commande de démarrage en douceur. Le dispositif de commande de démarrage en douceur peut comprendre un détecteur de non régulation permettant de détecter une condition de non régulation. Des modes de réalisation consistent à diminuer le signal de démarrage en douceur en réponse à une condition de non régulation pendant une durée prédéterminée, à détecter la condition de non régulation en réponse à un cycle de service maximal du commutateur de régulateur, à générer un indicateur de niveau de démarrage en douceur pour réguler la diminution du signal de démarrage en douceur et à maintenir le signal de démarrage en douceur à une relation prédéterminée par rapport à un signal de réaction.
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