MODULAR DC-DC CONVERTER

摘要

A modular dc-dc boost converter system is provided that can substantially improve efficiency over a wide range of input and output voltages. The system includes three modules: a buck module, a boost module, and a dc transformer module. These modules are interconnected such that the system output voltage is equal to the sum of the output voltages of adc-dc converter module and a dc transformer module. Depending on the operating point, one or more modules may operate in passthrough mode, leading to substantially reduced ac losses. The required capacitor size and the transistor voltage ratings are also substantially reduced, relative to a conventional single dc-dc boost converter operating at the same input and output voltages.

主权项

1. A modular dc-dc converter system, comprising:
a dc-dc converter module including a converter module input port and a converter module output port; a dc transformer module including a transformer module input port and a transformer module output port; a controller that supplies one or more duty cycle signals to at least one switch of the dc-dc converter module and one or more control signals to the dc transformer module; a system input voltage port; and a system output voltage port, wherein the converter module input port of the dc-dc converter module is coupled to the system input voltage port, the input port of the dc transformer module is coupled to the system input voltage port, the output port of the dc-dc converter module is coupled in series with the output port of the dc transformer module and the series-coupled ports are coupled to the system output voltage port.