Texas Instruments Incorporated Deutschland, Gmbh

Ivo Huber

Joerg Kirchner

Hermann Seibold

Andreas Fees

Methods and apparatus for operating a DC-to-DC voltage converter that has a power stage that includes at least one switching transistor. The output voltage of the DC-to-DC voltage converter is monitored. If the output voltage drops below a lower output voltage threshold, a series of drive pulses is provided to the at least one switching transistor to commence switching of the at least one switching transistor. If the output voltage rises above an upper output voltage threshold, a random number of additional drive pulses is provided to the at least one switching transistor and then the provision of drive pulses to the at least one switching transistor is ceased.

Implementation of spread spectrum in PFM mode for DC-DC converters

An integrated battery charger protection circuit incorporates a charge control power FET for series connection in the battery load current path from a DC supply input terminal to a controlled DC output terminal. The circuit has a gate drive input terminal connected to the gate of the charge control power FET and further includes protective circuitry adapted to disable the DC output terminal in a fault condition detected within the integrated circuit. The controlled DC output terminal and the gate drive input terminal are connectable to the external charge control host circuit the same way as corresponding terminals of a discrete power FET, in particular of p-channel type.

Growing community of inventors

Roehrmoos, Germany

Ivo Huber