Patent Number: 6,798,177

Title: Boost-buck cascade converter for pulsating loads

Abstract: A power converter including a first stage, a reservoir capacitor and a second stage. The first stage converts the voltage of a primary energy source, such as a battery, to a voltage on the reservoir capacitor, which stores a large amount of energy in the form of a voltage substantially larger than the voltage of the primary energy source. The second stage converts the voltage on the reservoir capacitor to a substantially constant voltage for a load device that demands current having the form of large, short, current pulses. The cascaded converter prevents the pulsating load currents of the load device, such as a GSM power amplifier, from causing a severe voltage loss at the battery. This increases the power available from the battery and reduces loses from the internal resistance of the battery.

Inventors: Liu; Kwang H. (Sunnyvale, CA), Negru; Sorin L. (San Jose, CA), Shih; Fu-Yuan (Taipei, TW), Hsieh; George (Taipei, TW)

Assignee: Arques Technology, Inc.

International Classification: H02M 3/158 (20060101); H02M 3/04 (20060101); G05F 001/613 ()

Expiration Date: 09/28/2021