Title:
PULSE POWER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2019115136
Kind Code:
A
Abstract:
To reduce stray capacitance while securing favorable cooling of a discrete type semiconductor switching device 6 and a resistor 8.SOLUTION: A pulse power supply device comprises: a copper heat sink 1 having cooling water piping 4 on a lower face; and a first and a second ceramic plates 2, 3 made of aluminium nitride having excellent insulation property and thermal conductivity. A plurality of semiconductor switching devices 6 are attached on an upper face of the first ceramic plate 2 in line. A plurality of resistors 8 are attached on an upper face of the second ceramic plate 3 in line. Respective ceramic plates 2 and 3 are fixed onto the heat sink 1 by a pair of aluminium support bars 14. Since the switching devices 6 and the resistors 8 are located and separated horizontally, stray capacitance therebetween and the stray capacitance between them and the heat sink 1 become small. Heat is transmitted to cooling water via the first and a second ceramic plates 2, 3, support bars 14, and the heat sink 1.SELECTED DRAWING: Figure 1
Inventors:
OSADA TOSHIHIRO
AZUMA MASAO
AZUMA MASAO
Application Number:
JP2017245852A
Publication Date:
July 11, 2019
Filing Date:
December 22, 2017
Export Citation:
Assignee:
MEIDENSHA ELECTRIC MFG CO LTD
International Classes:
H02M9/04
Domestic Patent References:
| JP2002134818A | 2002-05-10 | |||
| JP2001313496A | 2001-11-09 | |||
| JP2016039157A | 2016-03-22 | |||
| JP2007300732A | 2007-11-15 |
Attorney, Agent or Firm:
Hiromichi Kobayashi
Tomioka Kiyoshi
Uzawa Hidehisa
Tomoyuki Ota
Tomioka Kiyoshi
Uzawa Hidehisa
Tomoyuki Ota