Switching modulator implementing power cycling
By introducing buck and boost control circuits into the switching modulator, the charge of the output node is actively circulated to the input node, solving the energy waste problem during output voltage self-discharge and achieving higher energy utilization and extended battery life.
CN116247934BActive Publication Date: 2026-03-20ALPHA & OMEGA SEMICON INT LP
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Patent Information
- Application Number
- CN202211495008.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2022-03-18
- Filing Date
- 2022-11-26
- Publication Date
- 2026-03-20
- Estimated Expiration
- 2042-11-26
AI Technical Summary
Technical Problem
When the output voltage of an existing switching modulator self-discharges or decays, the stored charge is dissipated through the load leakage path, resulting in energy waste. This is especially true for large output capacitors, which affects battery life and energy efficiency.
Method used
By introducing buck and boost control circuits into the switching modulator, the charge of the output node is actively circulated to the input node, avoiding charge dissipation in the load leakage path and realizing charge recycling.
Benefits of technology
It improves energy efficiency and extends battery life, especially significantly improving energy efficiency in battery-powered electronic systems.
✦ Generated by Eureka AI based on patent content.
Abstract
A controller for a switched modulator receives an input voltage and generates a regulated output voltage. The controller activates a buck control circuit to generate a regulated output voltage having a first voltage value less than the input voltage. The controller activates a boost control circuit to return charge stored on an output capacitor at an output node to an input node to drive the regulated output voltage to a second voltage value lower than the first voltage value. In some embodiments, in response to a command indicating that the controller is to allow the output voltage to decay, the controller operates in a boost mode, using the boost control circuit to circulate the stored charge at the output node while reducing the output voltage.
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