Maxim Integrated Products, Inc.

Samsung Electronics Co., Ltd.

Sean Lai

Zhouyue Pi

Rui Liu

Oscar Blyde

Brett A Miwa

David Harrington

Xu Zhu

Mark Anthony Belch

Hongguang Dong

Kevin Wendell Dowdy

Dale Alan Kemper

Yusuf A Bhagat

Yang Lu

David Stearns

Ying Dong

In-Soo Kim

Various embodiments of the invention provide for a multi-input switch regulator that is controlled to selectively receive power from one of multiple power sources in order to extend the range of available battery voltages at which the regulator can operate. Certain embodiments accomplish this by using an internal adaptive control circuit to coordinate multiple high-side switches to operate with a low-side switch to generate a desired output voltage.

System and methods for multi-input switching regulator

A system includes a voltage regulator module, a voltage comparator module, and a current limiting module. The voltage regulator module regulates an input voltage supplied by a power supply and supplies an output current to a load. The voltage comparator module compares the input voltage to a first threshold. The current limiting module decreases the output current when the input voltage decreases to less than or equal to the first threshold, decreases the output current until the input voltage increases to greater than the first threshold, and decreases the output current by an additional predetermined amount after the input voltage increases to greater than the first threshold.

Adaptive input current limiting for switch-mode chargers

Growing community of inventors

Chandler, AZ, United States of America

Sean Lai