CONTROLLER FOR DC-DC CONVERTER

Registre Brevet WIPO
Numéro d'application JP2019031870
Numéro de publication 2021/029018
Statut Délivré - en vigueur
Date de dépôt 2019-08-13
Date de publication 2021-02-18
Propriétaire OMRON CORPORATION (Japon)
Inventeur(s)
  • Tokusaki, Hiroyuki
  • Hyodo, Takashi
  • Uematsu, Takeshi

Abrégé

The present invention provides a controller for an isolated resonant DC-DC converter which includes a primary-side conversion unit that converts an input DC voltage into an AC voltage, a transformer that has a primary winding and first and second secondary windings, and converts an AC voltage into two AC voltages, and a secondary-side conversion unit having a first switch connected between the first secondary winding and a load, and a second switch connected between the second secondary winding and the load, the controller comprising: an ON-period detection unit that detects a first current flowing between the first secondary winding and the load, and a second current flowing between the second secondary winding and the load, and detects first and second ON-periods, in which the first and second currents are at least predetermined values, during one cycle of a control operation; and a switch control unit that turns on the first switch according to the first ON-period of at least one cycle immediately before a current cycle, and turns on the second switch according to the second ON-period of at least one cycle.

Classes IPC  ?

  • H02M 3/28 - Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac