US 2023/0412085 A1Published application

Isolated resonant dc-dc converter

AssigneeDelta Electronics, Inc.

InventorsYuri Panov, Peter Mantovanelli Barbosa, Yihua Chang, Kai Dong

Life of this patent

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Abstract

An isolated DC-DC converter is provided. The isolated DC-DC converter includes a full-bridge switching stage, a resonant network, a transformer, an output stage, an isolated charge sensor and a switch controller. The full-bridge switching stage has at least four active switches. The resonant network has a plurality of inductors and plurality of capacitors. The transformer is connected to the resonant network. The output stage is connected to the transformer and is configured to generate an output voltage or current. The isolated charge sensor is connected to the resonant network to generate a resonant inductor current charge signal. The switch controller generates and provides control signals to the at least four active switches based on at least the resonant inductor current charge signal and the output voltage or current.

Claims14

Dependent claims

An isolated DC-DC converter comprising:

a full-bridge switching stage having a plurality of active switches;
a resonant network having a plurality of resonant components;
a transformer connected to the resonant network;
an output stage connected to the transformer and configured to generate an output voltage;
an error amplifier configured to generate a voltage error signal based on the output voltage and a reference voltage;
a feedforward controller configured to sense an input voltage of the full bridge switching stage and/or an output current of the output stage, and generate a feedforward control signal based on the sensed signal;
an isolated charge sensor connected to the resonant network and configured to generate a charge sensing signal corresponding to one of the resonant components;
and
a switch controller configured to generate and provide control signals to the plurality of active switches in charge control mode based on at least the voltage error signal, the feedforward control signal and the charge sensing signal.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/242,797Filed 6 Sep 2023
Priority: 23 Sep 2021
Published: 21 Dec 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

H02M 1/15
Arrangements for reducing ripples from DC input or output: using active elements
H02M 3/33573
Having several active switching elements: full-bridge at primary side of an isolation transformer
H02M 1/0009
Details of control, feedback or regulation circuits: devices or circuits for detecting current in a converter
H02M 1/0019
Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters: the disturbance parameters being…

Family

Application17/482,981Division · filed 23 Sep 2021
Application18/242,797Division
US 11,791,733 B2Related patent
US 12,267,020 B2Related patent
US 2023/0088584 A1Published application
US 2023/0412085 A1This patent

From the US filing history. Foreign family members aren’t listed.

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