Zf Friedrichshafen Ag

Wilfried Lassmann

Michael Sperber

Christian Büttner

Jörg Kühnl

Dirk Schramm

Jörg Kűhnl

A printed circuit board () comprises a conductive outer layer () and at least one conductive inner layer (). At least one bus bar () for conducting high current and at least one power semiconductor () for controlling and/or activating the high current are disposed on a side of the outer layer () facing away from the at least one inner layer (). The printed circuit board () allows for a high level of component density while simultaneously providing for effective heat dissipation. Furthermore, the printed circuit board () can be produced economically and flexibly.

Circuit boards and method to manufacture circuit boards

A printed circuit board () for converting an input phase to at least one output phase (U,V,W), which has an input phase surface area with at least one conductive DC+ layer () and one conductive DC&#x2212; layer () for each conductive DC+ layer (), for conducting the input phase. There is at least one high-side power semiconductor () for each output phase (U, V, W) and one low-side power semiconductor () for each high-side power semiconductor (), for switching the input phase. The at least one DC+ layer () corresponding to a respective DC&#x2212; layer () is formed in a cover surface area (), which covers at least 75% of the input phase surface area.

Circuit board to transform an entry phase in at least one output phase and direct-current-motor with such circuit board

A multifunctional high current circuit board includes a high current-carrying current-conducting layer and a switching layer, which is connected to at least one heat source, wherein high current-carrying potentials are conducted into the switching layer.

Multi-functional high-current circuit board

A multi-functional high current circuit board comprises a current conduction layer having several strata for conduction of electric current, a switching layer comprising at least one power circuit breaker for switching an electric load, a control layer comprising at least one control element to control the at least one power circuit breaker, at least one shielding element for shielding the current conduction layer from the control layer and from the switching layer.

The invention proposes a printed circuit board with multiple layers, which features at least one outer layer and at least one inner layer adjacent to the outer layer. The printed circuit board features a plurality of micro-through-holes, which are formed between a supply voltage area of at least one outer layer and a supply voltage area of at least one inner layer.

Printed circuit board and control device for a vehicle transmission comprising the printed circuit board

A multilayer printed circuit board may comprise at least one printed circuit board front end that is thermally conductively metalized. An apparatus with such a printed circuit board is also proposed.

Growing community of inventors

Hirschau, Germany

Wilfried Lassmann