Steuerschaltung für Sperrwandler und Verfahren zur Steuerung eines Sperrwandlers
Anmelder: NXP USA, Inc. 🇺🇸
Details
- Veröffentlichungs-Nr.
- EP4761084
- Anmeldetag
- 8. Dezember 2025
- Veröffentlichung
- 17. Juni 2026
- Rechtsraum
- EP
- IPC
- H02M1/00, H02M3/335
Abstract
Embodiments of a control circuit for a flyback converter and a method for controlling a flyback converter are disclosed. In an embodiment, a control circuit includes an integrator circuit configured to output a ramp signal in response to an AC feedback signal from a primary side of a flyback converter, a threshold generator circuit configured to output a threshold voltage in response to the ramp signal, wherein the threshold voltage is generated as a function of a peak voltage of the ramp signal, a comparator circuit configured to compare the ramp signal to the threshold voltage and to output a sampling signal when the ramp signal drops below the threshold voltage, and a sample and hold circuit configured to sample the AC feedback signal in response to the sampling signal and to output a sample of the AC feedback signal that is used to control the flyback converter.
Anmelder
- Firma
- NXP USA, Inc.
- Land
- 🇺🇸 USA
US-amerikanische Gesellschaft des Halbleiterkonzerns NXP, die Chips und Halbleiterlösungen für Automobiltechnik, Kommunikation und Industrieelektronik entwickelt.
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