Buck-Boost Circuit Topology for Fast Voltage Stabilization
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Solution Overview
Problem
Existing buck-boost circuits take too long to switch between bucking and boosting modes, resulting in prolonged voltage stabilization times that fail to meet the requirements of 5G communication systems, leading to signal sensitivity issues and communication failures.
Innovation Solution
A buck-boost circuit design incorporating multiple switches and capacitors, controlled by a module that adjusts switch states based on target and input voltage relationships, allowing for simultaneous operation of switches to quickly stabilize output voltage, particularly in boosting mode by generating twice the input supply voltage on the inductor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional buck-boost switching structure is used, then circuit simplicity is maintained, but voltage stabilization time is too long to meet communication requirements
Solution Approach 1:
The switching circuit is divided into two independent modules: a bucking switching circuit and a boosting switching circuit. Each module can operate independently, allowing the system to switch between bucking and boosting modes without requiring a lengthy intermediate transition process. This segmentation enables faster mode switching and reduces voltage stabilization time.
Solution Approach 2:
The circuit pre-configures both bucking and boosting switching circuits in advance, with each circuit ready to operate immediately when needed. The control module can activate the required circuit without waiting for the other to complete its operation, eliminating the sequential delay inherent in traditional single-mode switching designs.
2Speed
If switching from bucking mode to boosting mode using traditional structure, then mode transition is achieved, but intermediate switching process is time-consuming
Solution Approach 1:
The switching circuit is divided into two independent modules: a bucking switching circuit and a boosting switching circuit. Each module can operate independently, allowing the system to switch between bucking and boosting modes without requiring a lengthy intermediate transition process. This segmentation enables faster mode switching and reduces voltage stabilization time.
Solution Approach 2:
The control module maintains continuous voltage regulation by ensuring that either the bucking circuit or the boosting circuit is always active. When switching modes, the target voltage is maintained throughout the transition by appropriately controlling the switches, eliminating idle or intermediate states where voltage regulation would be suspended.
3Reliability
If voltage regulation is delayed, then system power consumption reduction is achieved, but signal sensitivity decreases causing communication failure
Solution Approach 1:
The switching circuit is divided into two independent modules: a bucking switching circuit and a boosting switching circuit. Each module can operate independently, allowing the system to switch between bucking and boosting modes without requiring a lengthy intermediate transition process. This segmentation enables faster mode switching and reduces voltage stabilization time.
Solution Approach 2:
The control module continuously monitors the output voltage and compares it with the target voltage, dynamically adjusting the switching states of the bucking and boosting circuits to maintain precise voltage regulation. This feedback mechanism ensures that voltage stabilization is achieved quickly and accurately, preventing communication failures due to voltage instability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design reduces voltage stabilization time and enables quick, stable voltage regulation, meeting the demands of 5G communication systems by efficiently switching between bucking and boosting modes.
Implementation Method 1
A first terminal of the first capacitor is connected to a second terminal of the first switch... Twice an input supply voltage is generated on one terminal of the inductor when the capacitor and the switch work cooperate to operate
Implementation Method 2
A first terminal of the first inductor is connected to a second terminal of the second switch... Twice an input supply voltage is generated on one terminal of the inductor when the capacitor and the switch work cooperate to operate
Data Source
Figure 1~3
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Figure 7~8
AI summary
The present disclosure relates to a buck-boost circuit and a control method thereof. In the buck-boost circuit, a first terminal of a first switch is connected to a anode of an input power supply, a first terminal of a second switch is connected to the anode of the input power supply, a first terminal of a third switch and a first terminal of a first capacitor are connected to a second terminal of the first switch, a second terminal of the third switch is connected to a cathode of the input power supply, a first terminal of a fourth switch, a second terminal of the first capacitor, and a first terminal of a first inductor are connected to a second terminal of the second switch, a second terminal of the fourth switch is connected to the cathode of the input power supply, a second terminal of the first inductor is connected to a anode of an output power supply, and a second capacitor is connected in parallel between the anode and a cathode of the output power supply. Twice an input supply voltage is generated on one terminal of the inductor when the capacitor and the switch cooperate to operate, so that the buck-boost circuit in the present disclosure can quickly boost an output voltage in a boosting mode. This can reduce a voltage stabilization time when the output voltage is regulated, and can regulate the voltage quickly and stably.