Patent ID: 6194880
Filing Date: 2001-02-27
Classification: H02M,Y02B

Abstract:
A boost converter having an input couplable to a source of electrical power, comprising:a boost inductor coupled to said input and adapted to conduct currents bidirectionally;a first controllable switch coupled to said boost inductor;a second controllable switch coupled to a node between said first controllable switch and said boost inductor; anda controller, coupled to said first and second controllable switches, that closes said first controllable switch to provide a charging conductive path across said input to charge said boost inductor and alternately closes said second controllable switch to provide:a forward conductive path from said boost inductor to an output of said boost converter when a voltage at said node exceeds a voltage at said output to provide power to said output, anda reverse conductive path from said output to said boost inductor when said voltage at said output exceeds said voltage at said node to decrease said voltage at said node and thereby decrease a switching voltage of said first controllable switch.