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1. WO2022118089 - METHOD AND CIRCUIT FOR DRIVING A HALF BRIDGE

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Publication Number WO/2022/118089
Publication Date 09.06.2022
International Application No. PCT/IB2021/055166
International Filing Date 11.06.2021
IPC
H02M 1/00 2006.1
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
H02M 1/32 2007.1
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
32Means for protecting converters other than by automatic disconnection
CPC
H02M 1/0045
H02M 1/327
Applicants
  • EDRIVELAB S.R.L. [IT]/[IT]
Inventors
  • SOLDATI, Alessandro
Agents
  • DONDI, Silvia
Priority Data
10202000002932401.12.2020IT
Publication Language English (en)
Filing Language Italian (IT)
Designated States
Title
(EN) METHOD AND CIRCUIT FOR DRIVING A HALF BRIDGE
(FR) PROCÉDÉ ET CIRCUIT DE COMMANDE D'UN DEMI-PONT
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Abstract
(EN) A method for driving a half bridge (1 ) comprising a first device (2) and a second device (3), wherein the second device (3) is a transistor, the method comprising the steps of: - driving the devices (2, 3) with signals in accordance with a periodic modulation pattern configured in such a manner that in a period (T) the first device (2) assumes a switched on configuration for a fraction of period (tON); - forcing the second device (3) in a current generator configuration controlled by a switch-on pulse (PulseCST) for an interval of time (tst) that is greater than a time constant (i) of the second device (3), maintaining in the meantime the first device (2) in the switched on configuration; - adjusting the duration of the interval of time (tst) starting from the calculation or prediction of the average power Pavg dissipated over the period (T); - adjusting the amplitude of the switch-on pulse (PulseCST) so as to vary the current circulating in the second device (3).
(FR) La présente invention concerne un procédé de commande d'un demi-pont (1) comprenant un premier dispositif (2) et un second dispositif (3), le second dispositif (3) étant un transistor, le procédé comprenant les étapes consistant à : - commander les dispositifs (2, 3) avec des signaux selon un modèle de modulation périodique configuré de telle sorte que dans une période (T), le premier dispositif (2) adopte une configuration de mise en marche pour une fraction de période (tON); - amener de force le second dispositif (3) dans une configuration de générateur de courant commandée par une impulsion de mise en marche (PulseCST) pour un intervalle de temps (tst) qui est supérieur à une constante de temps (i) du second dispositif (3), maintenir dans le même temps le premier dispositif (2) dans la configuration de mise en marche; - régler la durée de l'intervalle de temps (tst) à partir du calcul ou de la prédiction de la puissance moyenne Pavg dissipée pendant la période (T); - régler l'amplitude de l'impulsion de mise en marche (PulseCST) de manière à faire varier le courant circulant dans le second dispositif (3).
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