Optimal switching instants for a switched-capacitor DC/DC power converter

A Design Method of Switched-capacitor Power Converters by Employing a Ring-type Power Converter

To solve the flexibility problem in conversion modes, we propose a design method for switched-capacitor (SC) power converters by using a versatile SC converter, and derive theoretical formulas to give circuit properties such as output voltage, power efficiency, etc. According to conditions specified by a user, the proposed converter offers the circuit structure realizing a DC-DC/DC-AC/AC-DC/AC-...

Self-Oscillating Switched-Capacitor DC-DC Converter

Recent advances in low-power circuits have enabled mm-scale wireless systems [1] for wireless sensor networks and implantable devices, among other applications. Energy harvesting is an attractive way to power such systems due to limited energy capacity of batteries at these form factors. However, the same size limitation restricts the amount of harvested power, which can be as low as 10s of nW ...

Step-Up Switching-Mode Converter With High Voltage Gain Using a Switched-Capacitor Circuit

A new circuit is proposed for a steep step-up of the line voltage. It integrates a switched-capacitor (SC) circuit within a boost converter. An SC circuit can achieve any voltage ratio, allowing for a boost of the input voltage to high values. It is unregulated to allow for a very high efficiency. The boost stage has a regulation purpose. It can operate at a relatively low duty cycle, thus avoi...

Optimal Switching Instants of Linear Switched Systems Based on Meta-heuristic Approaches

In this paper, optimal control problems for switched systems are studied. In particular, we focus on such problems given a prespecified sequence of active subsystems and propose two approaches based on meta-heuristics to find the optimal switching instants. The first one is based on the Genetic Algorithm (GA) and the second on the Particle Swarm Optimization (PSO) algorithm. The objective is to...

Step up dcdc converter pdf