Circuit for switching power supply chip
By controlling the connection between the pins of the switching power supply chip and the functional modules, and utilizing the third control unit to release the energy of the parasitic capacitance, the problem of unstable pin voltage is solved, thereby improving the stability and reliability of the chip.
CN115378249BActive Publication Date: 2026-07-07ON BRIGHT INTEGRATIONS CO INC
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ON BRIGHT INTEGRATIONS CO INC
- Filing Date
- 2022-07-22
- Publication Date
- 2026-07-07
AI Technical Summary
Technical Problem
The voltage at the pins of a switching power supply chip can be unstable due to parasitic capacitance coupling energy, which affects sampling accuracy and chip stability, and may lead to functional errors and decreased reliability.
Method used
The connection between the pins of the switching power supply chip and the functional modules is controlled by the first and second control units. The third control unit is connected to the pins when the voltage changes to release the energy of the parasitic capacitance and stabilize the voltage sampling.
Benefits of technology
It effectively stabilizes the pin voltage of the switching power supply chip, avoids the influence of parasitic capacitance coupling energy, and improves the stability and reliability of the chip.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN115378249B_ABST
Abstract
The application provides a circuit for a switching power supply chip. The circuit for the switching power supply chip comprises a first control unit configured to generate a second control signal according to a first control signal of the switching power supply chip; a second control unit configured to turn on or off a connection between a predetermined pin of the switching power supply chip and a predetermined functional module of the switching power supply chip according to the second control signal; and a third control unit configured to be connected to the predetermined pin or disconnected from the predetermined pin according to the second control signal, wherein when the second control unit disconnects the connection between the predetermined pin and the predetermined functional module, the third control unit is connected to the predetermined pin, so that an information sampling signal at the predetermined pin is stable.
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