公开(公告)号：US20180076718A1

公开(公告)日：2018-03-15

申请号：US15819507

申请日：2017-11-21

Applicant: DELTA ELECTRONICS, INC.

Inventor： Jianhong Zeng ,  Haoyi Ye ,  Peiqing Hu

IPC: H02M3/335 ,  H05K1/14 ,  G09G1/00 ,  H02M3/158 ,  H02M1/42 ,  H02M7/04 ,  H02M7/49

CPC classification number: H02M3/33507 ,  G06F1/20 ,  G06F1/26 ,  G09G1/005 ,  H02M1/4225 ,  H02M3/158 ,  H02M7/04 ,  H02M7/49 ,  H02M2001/0032 ,  H02M2001/007 ,  H02M2001/0096 ,  H05K1/0263 ,  H05K1/141 ,  H05K1/144

Abstract: A power module includes a circuit board and a load group. The load group is installed on the circuit board. The load group includes a first-stage power conversion circuit, a second-stage power conversion circuit and plural loads. The first-stage power conversion circuit converts an input voltage into a transition voltage. The second-stage power conversion circuit converts the transition voltage into a driving voltage. A rated value of the first input voltage is higher than twice a rated value of the transition voltage. A rated value of the driving voltage is lower than a half of the rated value of the transition voltage. The distance between the input terminal of the second-stage power conversion circuit and the output terminal of the first-stage power conversion circuit is smaller than the distance between the input terminal of the first-stage power conversion circuit and each edge of the circuit board.