Isolated power converter with adjusted Bode diagram characteristics and related regulator thereof
By introducing voltage divider, buffer, variable resistor and N-type metal oxide semiconductor transistor into the secondary controller of the isolated power converter, adjusting the Bodega characteristics, the problem of poor response characteristics of the controller circuit in the previous technology under a wide output voltage range is solved, and a stable frequency response is achieved.
CN120237958APending Publication Date: 2025-07-01LEADTREND TECH
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Patent Information
- Application Number
- CN202311854791.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-07-01
AI Technical Summary
Technical Problem
The controller circuit of existing AC/DC isolated power converters consists of discrete components, resulting in the failure to maintain good response characteristics over a wide output voltage range.
Method used
The voltage divider, buffer, variable resistor, amplifier and N-type metal oxide semiconductor transistor are introduced into the secondary controller of the isolated power converter, and the Bode diagram characteristics are changed by adjusting the resistance value of the variable resistor.
Benefits of technology
The frequency response characteristic that maintains a stable over a wide output voltage range is achieved to ensure that the power converter can respond well under different operating conditions.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses an isolated power converter capable of adjusting Bode diagram characteristics and a related adjuster thereof. The adjustment circuit is included in a secondary side controller. The adjustment circuit includes a voltage divider, a buffer, a first variable resistor, a second variable resistor, an amplifier, and an N-type metal oxide semiconductor transistor. The buffer is coupled with the voltage divider; the first variable resistor is coupled with an external resistor arranged outside the secondary side controller; the second variable resistor is coupled with the first variable resistor and the buffer; the amplifier is coupled with the first variable resistor and the second variable resistor; the N-type metal oxide semiconductor transistor is coupled with the amplifier, the first external capacitor, the bias resistor and the optical coupler. Therefore, the characteristics of the Bode diagram of the isolated power converter can be adjusted through the first variable resistor and the second variable resistor.
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