Isolated power conversion apparatus and method of converting power
AssigneeHep Tech Co., Ltd.
InventorsChing-Tsai PAN, Po-Yen CHEN, Ta-Sheng HUNG
Life of this patent
Estimating the term…
Abstract
An isolated power conversion apparatus includes an isolation transformer and an auto charge pump circuit. The isolation transformer has a primary side and a second side, wherein the primary side is electrically connected to a pulsed power supply, and the secondary side has a first end and a second end; the auto charge pump circuit electrically connects the isolation transformer to a loading to improve power conversion efficiency and suppress output voltage ripples.
Claims12
An isolated power conversion apparatus for converting electric power of a pulsed power supply and transmitting the converted electric power to a loading, comprising:
- an isolated transformer having a primary side and a secondary side, wherein the primary side is electrically connected to the pulsed power supply, and the secondary side has a first end and a second end;
- and
- an auto charge pump circuit electrically connecting the isolated transformer to the loading, comprising:
- a first diode having an anode and a cathode, wherein the anode is connected to the second end of the secondary side of the isolated transformer, and the cathode is connected to the first end of the secondary side of the isolated transformer;
- a first capacitor having an end electrically connected to the first end of the secondary side and the cathode of the first diode;
- an inductor electrically connecting another end of the first capacitor to the cathode of the first diode;
- and
- a second capacitor, which is electrically connected to the loading in parallel, having two ends, one of which is electrically connected to the first capacitor and the inductor, and the other of which is electrically connected to the anode of the first diode and the second end of the secondary side of the isolated transformer.
A method of converting power, comprising the steps of:
- A. charging an isolated transformer at a primary side thereof with electric power provided by a pulsed power supply, and providing energy to a loading from an inductor, a first capacitor, and a second capacitor which are connected in parallel;
- B. charging the inductor, the first capacitor, and the second capacitor by a secondary side of the isolated transformer to keep providing energy to the loading from the second capacitor when the pulsed power supply stops providing the electric power;
- C. conducting a diode to make the first capacitor and the inductor generate a reverse voltage, and to charge the second capacitor for keeping providing energy to the loading.
An auto charge pump circuit for receiving electric power from a pulsed power supply and providing energy to a loading, wherein the pulsed power supply has a first output and a second output;
- the auto charge pump circuit comprising”
- a first diode having an anode and a cathode, wherein the anode is electrically connected to the second output of the pulsed power supply, and the cathode is electrically connected to the first output of the pulsed power supply;
- a first capacitor having two ends, one of which is electrically connected to the first output of the pulsed power supply and the cathode of the first diode;
- an inductor electrically connecting the other end of the first capacitor to the cathode of the first diode;
- and
- a second capacitor, which is connected to the loading in parallel, having tow ends, one of which is electrically connected to the first capacitor and the inductor, and the other of which is electrically connected to the anode of the first diode and the second output of the pulsed power supply.
Dependencies are inferred from the claim text.