Electronic assembly for a rotating electric machine for a motor vehicle according to which said electronic assembly comprises: - blocks (100, 200, 300) of electronic components, the blocks having different heat dissipation needs, the blocks being: - a power bloc; - a filtering block; - a control block; - a cooling device for cooling said blocks (100, 200, 300), said cooling device comprising: - a protective cap adapted to cover the power, filtering and control blocks (100, 200, 300), said protective cap comprising apertures (401, 402, 403, 404) designed to generate different cooling air streams (F1, F2, F3, F4) for the heat dissipation needs of each of the power, control and filtering blocks; and - cooling elements (101, 201, 301) cooperating thermally with the apertures (401, 402, 403, 404) of said protective cap; - a first cooling element is a first heat sink provided with a plurality of fins coupled to said power block; - a second cooling element is a second heat sink provided with a plurality of fins, coupled to capacitors of said filtering block; - the control block is disposed on a first plane parallel to a second plane on which the power block is mounted so as to allow a passage for a cooling air stream between the two blocks (100, 300); - the apertures of the protective cap are divided up into: - a first set of apertures designed to be positioned facing the fins of the first heat sink; - a second set of apertures designed to be positioned facing the control block; the two sets of apertures (401, 402) being separated by a separating low wall so as to create a first radial cooling air stream for said power block and a second radial cooling air stream for said control block; and - a third set of apertures designed to be positioned facing the fins of the second heat sink so as to create a third radial cooling air stream for said filtering block. - blocks (100, 200, 300) of electronic components, the blocks having different heat dissipation needs, the blocks being: - a power bloc; - a filtering block; - a control block; - a power bloc; - a filtering block; - a control block; - a cooling device for cooling said blocks (100, 200, 300), said cooling device comprising: - a protective cap adapted to cover the power, filtering and control blocks (100, 200, 300), said protective cap comprising apertures (401, 402, 403, 404) designed to generate different cooling air streams (F1, F2, F3, F4) for the heat dissipation needs of each of the power, control and filtering blocks; and - cooling elements (101, 201, 301) cooperating thermally with the apertures (401, 402, 403, 404) of said protective cap; - a protective cap adapted to cover the power, filtering and control blocks (100, 200, 300), said protective cap comprising apertures (401, 402, 403, 404) designed to generate different cooling air streams (F1, F2, F3, F4) for the heat dissipation needs of each of the power, control and filtering blocks; and - cooling elements (101, 201, 301) cooperating thermally with the apertures (401, 402, 403, 404) of said protective cap; - a first cooling element is a first heat sink provided with a plurality of fins coupled to said power block; - a second cooling element is a second heat sink provided with a plurality of fins, coupled to capacitors of said filtering block; - the control block is disposed on a first plane parallel to a second plane on which the power block is mounted so as to allow a passage for a cooling air stream between the two blocks (100, 300); - the apertures of the protective cap are divided up into: - a first set of apertures designed to be positioned facing the fins of the first heat sink; - a second set of apertures designed to be positioned facing the control block; the two sets of apertures (401, 402) being separated by a separating low wall so as to create a first radial cooling air stream for said power block and a second radial cooling air stream for said control block; and - a third set of apertures designed to be positioned facing the fins of the second heat sink so as to create a third radial cooling air stream for said filtering block. - a first set of apertures designed to be positioned facing the fins of the first heat sink; - a second set of apertures designed to be positioned facing the control block; the two sets of apertures (401, 402) being separated by a separating low wall so as to create a first radial cooling air stream for said power block and a second radial cooling air stream for said control block; and - a third set of apertures designed to be positioned facing the fins of the second heat sink so as to create a third radial cooling air stream for said filtering block.