Capacitive dc-to-dc converter with efficient use of flying...

H - Electricity – 02 – M

Patent

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H02M 3/07 (2006.01)

Patent

CA 2515499

A DC-to-DC converter (120) is suitable for use in an implantable medical device (5) and includes N capacitors (160, 170) and a controller (140). N is a whole number greater than one. The controller (140) is coupled to each of the N capacitors (160, 170) and to an output voltage terminal (142) and has N + 1 phases. During a first phase of the N + 1 phases the controller (140) couples selected ones of the N capacitors (160, 170) to the output voltage terminal (142). During successive N phases of the N + 1 phases the controller (140) couples other selected ones of the N capacitors (160, 170) selectively between an input voltage terminal, a power supply voltage terminal, and the output voltage terminal (142). Voltages across each capacitor of the N capacitors (160, 170) and at the output voltage terminal (142) assume respective uniquely determined values during all of the N + 1 phases.

L'invention concerne un convertisseur CC/CC (120) pouvant être utilisé comme dispositif médical implantable (5) et comprenant N condensateurs (160, 170) et un contrôleur (140). N est un nombre entier supérieur à un. Le contrôleur (140) est couplé à chaque condensateur N (160, 170) et à la borne de tension de sortie (142) et a N + 1 phases. Pendant une première phase des N + 1 phases, le contrôleur (140) couple les condensateurs sélectionnés parmi les N condensateurs (160, 170) à la borne de tension de sortie (142). Pendant les N phases successives des N + 1 phases, le contrôleur (140) couple d'autres condensateurs sélectionnés parmi les N condensateurs (160, 170) sélectivement entre une borne de tension d'entrée, une borne de tension d'alimentation et la borne de tension de sortie (142). Les tensions passant par chaque condensateur des N condensateurs (160, 170) et à la borne de tension de sortie (142) assument respectivement les valeurs déterminées de façon univoque pendant la totalité des N + 1 phases.

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