Multi-channel power supply control IC for switching DC-DC converter using master slice method

摘要

As product cycles are shortened for recently popular portable devices such as cellular phones and digital still cameras, it has also become necessary to shorten the development period for the power ICs that are installed in these portable devices. In the development of power supply control ICs for DC-DC converters, the adoption of a master slice method that enables function modification just by changing the metal interconnects has resulted in the realization of a short development period of 5 weeks. This paper describes the functions, configuration and method of CAD-based development of a configurable power control IC in which step-up or step-down voltages can be configured for up to 4 channels.