Current mode DC/DC inverter possessing controllable output impedance


Application Number: 00126459
Application Date: 2000.09.01
Publication Number: 1291821
Publication Date: 2001.04.18
Priority Information: 1999/9/1 US 60/151,971
International: H02M3/00;G06F1/26
Applicant(s) Name: Intelset Corp.
Address:
Inventor(s) Name: C. Hauks;M. Hwarts;R. Yisharm
Patent Agency Code: 11038
Patent Agent: wang maohua
Abstract A DC/DC converter includes an error amplifier with a reference input and a summing input. The reference input is electrically connected to a reference voltage. The summing input is electrically connected to the output voltage and the output current. The summing input is configured for adding together the output voltage and the output current. The error amplifier issues an error signal and adjusts the error signal dependent at least in part upon the output voltage and the output current. A comparator receives the error signal. The comparator has a ramp input electrically connected to a voltage ramp signal. The comparator issues an output signal that is based at least in part upon said error input. A power switch has an on condition and an off condition, and supplies dc current to the load when in the on condition. The power switch has a control input electrically connected to the comparator output signal. The power switch is responsive to the control input to change between the on condition and the off condition to thereby adjust the output current of the DC/DC converter.