Patent Number: 8,823,442

Title: System and method of reducing magnitudes of kick-back voltages in a circuit that alternates a direction of current flow through a load

Abstract: A circuit is provided and includes current sources, switches, a control module, and capacitances. The current sources adjust current flowing through a load. Each of the switches activates a respective one of the current sources. Kick-back voltages are generated at inputs of the current sources in response to the current sources being turned ON. A control module generates control signals to change states of the switches to alternate a direction in which the current flows through the load. A first capacitance is connected between a first pair of the current sources and a second pair of the current sources. A second capacitance is connected between the first pair of the current sources and a reference terminal. A third capacitance connected between the second pair of the current sources and the reference terminal. The first capacitance, the second capacitance, and the third capacitance reduce magnitudes of the kick-back voltages.

Inventors: Ulcar; Talip (San Francisco, CA)

Assignee: Marvell International Ltd.

International Classification: H03K 17/687 (20060101)

Expiration Date: 9/02/12018