# US 2019/0173377 A1 · Circuit board to transform an entry phase in at least one output phase and direct-current-motor with such circuit board > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0173377 A1 - Document ID: US20190173377A1 - Status: Published application - Kind: A1 - Application number: 16/206,455 - Filed: 2018-11-30 - Published: 2019-06-06 - Earliest claimed: 2017-12-04 - Assignees: ZF Friedrichshafen AG - Applicants: ZF Friedrichshafen AG - Inventors: Wilfried LASSMANN; Jörg KÛHNL - Web page: https://patentgrep.com/patent/US20190173377A1 ## CPC - H02M 7/003: {Constructional details, e.g. physical layout, assembly, wiring or busbar connections} - H02M 1/44: Circuits or arrangements for compensating for electromagnetic interference in converters or inverters - H02M 3/33561: {having more than one ouput with independent control} - H05K 1/00: Printed circuits - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A printed circuit board (1) 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 (28) and one conductive DC− layer (29) for each conductive DC+ layer (28), for conducting the input phase. There is at least one high-side power semiconductor (6) for each output phase (U, V, W) and one low-side power semiconductor (7) for each high-side power semiconductor (6), for switching the input phase. The at least one DC+ layer (28) corresponding to a respective DC− layer (29) is formed in a cover surface area (2), which covers at least 75% of the input phase surface area. ## Claims ### Claim 1 A printed circuit board for converting an input phase to at least three output phases (U, V, W), that has an input phase surface area with at least one conductive DC+ layer for conducting a DC+ potential of the input phase and one conductive DC− layer for each DC+ layer for conducting a DC− potential of the input phase, at least one conductive high-side power semiconductor connected to the at least one DC+ layer for each output phase (U, V, W), for activating the DC+ potential, and a conductive low-side power semiconductor connected to the at least one DC− layer for each high-side power semiconductor, for activating the DC− potential, wherein the at least one DC+ layer is formed in a cover surface area, which covers at least 75% of the input phase surface area, corresponding to the respective DC− layer. ### Claim 2 (depends on 1) The printed circuit board according to claim 1, characterized in that the at least one DC+ layer is disposed adjacent to the respective DC− layer, and is spaced apart therefrom in the direction of the surface norms of the DC+ layers and the DC− layers by no more than 200 μm, in particular no more than 150 μm. ### Claim 3 (depends on 1) The printed circuit board according to claim 1, wherein all of the DC+ layers and all of the DC− layers are the same size and shape in the cover surface area, in particular such that they are identical. ### Claim 4 (depends on 1) The printed circuit board according to claim 1, wherein all of the DC+ layers and DC− layers are disposed in an alternating manner. ### Claim 5 (depends on 1) The printed circuit board according to claim 1, wherein the at least one DC+ layer and the respective DC− layer are formed by thick copper plies. ### Claim 6 (depends on 1) The printed circuit board according to claim 1, wherein at least one intermediate circuit capacitor is disposed in the input phase surface area. ### Claim 7 (depends on 6) The printed circuit board according to claim 6, wherein the cover surface area covers at least part of an infeed surface area (32; 32a) of the input phase surface area, in which the input phase is conducted from the at least one intermediate circuit capacitor to the at least one high-side power semiconductor and/or the at least one low-side power semiconductor. ### Claim 8 (depends on 1) The printed circuit board according to claim 1, wherein at least one conductive commutation circuit layer connected to the at least one high-side power semiconductor and/or the respective low-side power semiconductor. ### Claim 9 (depends on 8) The printed circuit board according to claim 8, wherein the at least one commutation circuit layer is formed at least in a part of the cover surface area corresponding to the at least one DC+ layer. ### Claim 10 (depends on 1) The printed circuit board according to claim 1, wherein at least one control circuit layer for activating the at least one high-side power semiconductor and/or the respective low-side power semiconductor. ### Claim 11 (depends on 1) The printed circuit board according to claim 1, wherein the input phase can be converted to at least two, preferably three output phases (U, V, W). ### Claim 12 (depends on 1) The printed circuit board according to claim 1, wherein numerous high-side power semiconductors and respective low-side power semiconductors for each output phase (U, V, W). ### Claim 13 (depends on 12) The printed circuit board according to claim 12, wherein all of the high-side power semiconductors and/or all of the low-side power semiconductors are disposed along a circuitry arc delimiting, at least in sections, the input phase surface area. ### Claim 14 (depends on 13) The printed circuit board according to claim 13, wherein numerous intermediate circuit capacitors, which are disposed along an intermediate arc that is concentric to the circuitry arc, and which has a smaller radius. ### Claim 15 (depends on 1) A DC motor with a printed circuit board according to claim 1 for providing at least one output phase for operating the DC motor.